Verified data · Updated October 2026
Steam oven error codes, straight from the manuals
172 fault codes across 14 brands, each transcribed from the manufacturer's own manual with the page it came from. Search engines and AI assistants routinely invent these. We only list what the documentation actually says.
172
codes documented
14
brands
38
you can clear yourself
134
need a service call
The pattern across brands
Most owner-fixable codes are water problems: an empty or badly seated tank, a kinked inlet hose, a blocked drain, or scale. Miele's F20 is literally "descale me". Nearly every code that points at a sensor, a probe, a fan motor or a board is a service call on every brand we checked. So before you phone anyone: refill and re-seat the tank, check the hoses, run a descale, power-cycle once. If the code comes back, stop and book service, because the manuals are consistent that repeats mean a part.
Jump to a brand: Miele, Fotile, NuWave, Toshiba, Alto-Shaam, Bosch, Thermador, Gaggenau, Wolf, Anova, Fisher & Paykel, Sharp, Tovala, Cuisinart.
Miele
Miele codes page →DGC 7000-series combi-steam ovens (DGC 7440, 7640, 7840, 7780, 7785 and siblings)
| Code | What it means | Likely cause | What to do | Service? |
|---|---|---|---|---|
| F10 | Water intake problem from the tank. | The suction hose in the water container is not inserted correctly or is not vertical. | Correct the position of the suction hose, then restart. | Owner fix |
| F11 | Water is not draining. | The drain hoses are blocked. | Clear the drain hoses. If the message returns, contact Miele Service. | Call service |
| F20 | Descaling is required. | Limescale build-up in the steam system. | Descale the oven (see "Cleaning and care" in the manual). If the fault message appears again afterwards, contact Miele Customer Service. | Owner fix |
| F44 | Technical fault. | Internal electronics fault. | Switch the oven off and on again. If the same message appears again, contact Miele Service. | Call service |
| F55 | Safety shut-off after maximum run time. | The oven ran a function for longer than its maximum permitted time and switched itself off. | Switch the oven off and on again; it is immediately ready for use. | Owner fix |
| F94 | No water reaching the plumbed inlet (DGC 7785 and other plumbed models). | Inlet hose trapped or kinked, water supply valve not opened, or a float switch in the water container is stuck. | Free the hose and open the supply valve, then restart. If it returns after fixing the cause, contact Miele Service. | Call service |
| F190 | Water intake valve fault (plumbed models). | Can occur if the control panel is opened or closed while water is being drawn in. | Confirm with OK and continue. If the message appears again, contact Miele Service. | Call service |
| F196 | General fault, often the drain filter. | The drain filter is not inserted correctly, or an internal fault. | Turn the oven off, re-seat the drain filter, turn it back on. If it recurs, contact Miele Service. | Call service |
| F1 | Continuous audible signal after the oven is switched off (function knob at 0); residual water cannot be pumped out. | The water container used to collect pumped-out residual water is not in the appliance. | Push the water container fully into the appliance. | Owner fix |
| F04 | Power interruption during a cooking program. | The power supply was interrupted during operation. | Check the cooking progress, enter a new cooking duration if necessary, and press Start/Stop to continue. | Owner fix |
| F05 | Water nozzle needs descaling or the water intake valve is not fully open. | The water intake valve is not fully open, or the water nozzle is scaled up or clogged. | Open the water intake valve fully and restart. Otherwise let the oven cool, remove the side runners, pull out the nozzle, descale it with Miele descaler or a suitable descaler, rinse it, run Steam cooking at 212 F for 1 minute with the nozzle removed to flush the water-carrying parts, then refit the nozzle and runners. If the fault persists, contact Miele Service. | Call service |
| F12 | The current cooking program is interrupted; water is not getting into the steam oven. | The water intake valve is not open; the filter in the water intake is blocked; or the water intake hose is faulty. | Open the water intake valve and restart, or clean the intake filter. If the intake hose is faulty, turn the oven off, close the water supply valve and contact Miele Service (or a plumber). | Call service |
| F13 | The temperature in the oven is too high. | The water intake valve is not fully open, or the water nozzle is scaled up or clogged. | Open the water intake valve fully and restart, or descale the nozzle using the same procedure as for F05. If the fault persists, contact Miele Service. | Call service |
| F14 | Water inlet symbol: too little water is reaching the steam generator. | Too little water is getting into the steam generator. | Turn the steam oven off and back on. If the message appears again, switch the oven off and contact Miele Service. | Call service |
| F27 / E04 | Power interruption during operation (F27) or during the descaling program (E04, with 0:06 on the time display). | The power supply was interrupted. | F27: check cooking progress, re-enter the duration if needed and press Start/Stop. E04: let the 0:06 timer run down, then turn the oven off and back on. | Owner fix |
| F38 | Electronic fault. | A technical fault in the electronics that the owner cannot remedy. | Contact Miele Service. | Call service |
| F54 | Water is not getting into the steam oven. | The water intake valve is not open. | Check that the water intake valve for the oven is open; if no water is supplied, open the valve or contact a plumber. | Owner fix |
| F74 | Technical fault. | A technical fault the owner cannot remedy. | Book a repair appointment with Miele. | Call service |
| F95 | The level switch is blocked by limescale. | Limescale deposits in the water container. | Descale the steam oven as described in the operating instructions. If the fault persists, contact Miele Service. | Call service |
| F235 | Electronics fault. | A technical fault in the electronics that the owner cannot remedy. | Book a repair appointment with Miele. | Call service |
| F267 | Temperature limiter fault. | A technical fault in the temperature limiter that the owner cannot remedy. | Book a repair appointment with Miele. | Call service |
Sources: Miele DGC 7785 operating instructions (identical table in DGC 7440/7640/7840/7780 manuals), pp. 156–157; Miele USA support article "Fault F1"; Miele USA support article "Fault F04"; Miele USA support article "Fault F05"; Miele USA support article "Fault F12"; Miele USA support article "Fault F13"; Miele USA support article "Fault F14 (water inlet symbol)"; Miele USA support article "Fault F27 or E04"; Miele USA support article "Fault F38"; Miele USA support article "Fault F54"; Miele USA support article "Fault F74"; Miele USA support article "Fault F95"; Miele USA support article "Fault F235"; Miele USA support article "Fault F267".
Fotile
Fotile codes page →ChefCubii HYZK26-E1 / HYZK26-E2 countertop combi-steam ovens
| Code | What it means | Likely cause | What to do | Service? |
|---|---|---|---|---|
| E2 | Steam generator temperature sensor fault. | Short circuit or open circuit of the steam generator NTC. | Contact Fotile to arrange service. | Call service |
| E3 | Control board cannot talk to the display. | Abnormal communication between the control panel and display panel. | Contact Fotile to arrange service. | Call service |
| F3 | Oven cavity temperature probe open circuit. | Open circuit of the cavity probe. | Contact Fotile to arrange service. | Call service |
| F4 | Oven cavity temperature probe short circuit. | Short circuit of the cavity probe. | Contact Fotile to arrange service. | Call service |
| Add water please | Tank is low or the water path has failed. | Low water level in the tank; if the tank is full, a failed water pipeline system. | Fill the tank with an appropriate amount of water. If the message persists with a full tank, call the Fotile after-sales hotline. | Owner fix |
Source: Fotile ChefCubii HYZK26-E1/E2 user manual, p. 9 (Troubleshooting).
NuWave
NuWave codes page →NuWave Combi Steam Oven 16Qt (BM38091)
| Code | What it means | Likely cause | What to do | Service? |
|---|---|---|---|---|
| Er1 | The unit has over-heated. | Internal over-temperature. | Turn off and allow to cool completely before using again. | Owner fix |
| Err1 | The unit has short circuited. | Electrical short. | Contact NuWave customer service ([email protected] for Amazon purchases, [email protected] otherwise). | Call service |
| Err2 | The unit's circuit has broken. | Open circuit inside the unit. | Contact NuWave customer service. | Call service |
Source: NuWave Combi Steam Oven 16Qt owner's manual (BM38091), p. 13.
Toshiba
Toshiba codes page →Toshiba 6-in-1 Compact Steam Oven 20L (MS3-STQ20SE)
| Code | What it means | Likely cause | What to do | Service? |
|---|---|---|---|---|
| F01 | Cavity too hot to start the selected function. | When the temperature of the cavity is high, the relevant functions do not operate. | Wait for the cavity to cool, then start again. | Owner fix |
| FILL (with the water-drop icon) | Water box empty or not seated. | The water box is out of water or not installed in place. | Refill and re-seat the water box. If the message stays, the manual says to seek after-sales service. | Owner fix |
Source: Toshiba 6-in-1 Compact Steam Oven 20L (MS3-STQ20SE) instruction manual, p. 71 (Troubleshooting).
Alto-Shaam
Alto-Shaam codes page →Combitherm CT PROformance series (including Prodigi 7-20 Pro) commercial combi ovens
| Code | What it means | Likely cause | What to do | Service? |
|---|---|---|---|---|
| E01 | Low water in steam generator (roll-in models). | Water supply shut off or low pressure; calcium on the water-level probe; fill solenoid, drain pump or drain cap faults. | Check the water supply and pressure and descale the generator; otherwise service. | Call service |
| E02 | Control (relay board) temperature above 176°F / 80°C. | Cooling fan malfunction or blocked air intake. | Clear the air intake; service if the fan has failed. | Call service |
| E03 | Fan motor error (table-top / upper motor). | Motor or fan wheel locked, or the Hall-effect sensor does not detect rotation. | Service. | Call service |
| E04 | Lower fan motor error (roll-in models). | Lower convection fan does not spin within 60 seconds. | Service. | Call service |
| E05 / E06 | VFD communication failure (upper / lower). | Loss of power to the VFD, CAN cable disconnected, VFD or control board fault. | Service. | Call service |
| E07 / E08 | Error reported by the VFD (upper / lower). | See the VFD error list and match the number of green-LED blinks. | Service. | Call service |
| E11 | Convection temperature high (cavity above 600°F / 315°C for 25 s). | Convection element contactor locked on, or cavity probe N6 malfunction. | Service. | Call service |
| E13 | Steam generator temperature high (above 248°F / 120°C for 25 s). | Calcium on the water-level probe or in the generator; steam element contactor locked on; probe B4 fault. | Descale; service if it persists. | Call service |
| E15 | Condenser temperature high (above 212°F / 100°C). | Water supply shut off, plugged steam bypass hose, or cooling-water solenoid Y2 fault. | Check the water supply; service if it persists. | Call service |
| E20 | Single-point core temperature probe fault. | Probe not inserted into food correctly, not connected, dirty receptacle pins, or a failed probe. | Re-seat the probe and clean the receptacle pins; replace the probe if it persists. | Owner fix |
| E21 | Cavity temperature probe (N6) fault. | Probe malfunction or disconnected wires. | Service. | Call service |
| E22, E26–E29 | Multipoint core probe (B10) fault, whole probe or points 1–4. | Probe malfunction or disconnected wires. | Service. | Call service |
| E23 / E24 / E25 | Steam generator (B4) / bypass (B5) / condenser (B3) probe fault. | Probe malfunction or miswired. | Service. | Call service |
| E34 | Steam generator drain pump fault during cleaning. | Calcium build-up or blockage in the drain pump, pump failure, or water-level probe failure. | Descale; service if it persists. | Call service |
| E36 | Steam temperature high. | Water supply shut off or low; calcium on the water injection pipe or flow restrictor; solenoid Y1 fault; blocked bypass hose. | Check the water supply and descale; service if it persists. | Call service |
| E40–E49 | A temperature probe is shorted to ground (B3, B4, B5, N6, N8, B10 and its points). | Probe miswired or failed. | Service. | Call service |
| E51 | No water in steam generator (roll-in models). | Water supply shut off, or relay board fault. | Open the water supply; service if it persists. | Call service |
| E53 / E54 | Fan motor over-temperature (upper / lower), above 320°F / 160°C. | Motor high-limit open or miswired, motor or fan wheel locked, fan wheel damaged. | Service. | Call service |
| E55 / E56 | Vent did not open within 60 seconds (lower / upper vent). | Vent valve monitoring switch or vent motor fault. | Service. | Call service |
| E57 | No rinse water detected for 60 seconds. | Water supply shut off or low pressure; flow switch dirty or failed. | Check the water supply; clean the flow switch. | Owner fix |
| E88 / E89 | Gas ignition failure (lower / upper). | Gas supply shut off or low; hot-surface igniter, flame sensor, ignition control or gas valve fault; plugged heat exchanger. | Check the gas supply. If it appears a third time after two resets, remove the oven from service and contact an authorized provider. | Call service |
| E90 / E91 | Gas combustion blower not at speed (lower / upper). | Power or speed-control cable not connected, blower blocked or failed, faulty control board. | Service. | Call service |
| E92 / E93 / E94 | Communication error between the control board and the interface board. | CAN cable connection or cable fault, relay or display board connector fault. | Turn the oven off, disconnect power, reconnect and turn on. Check the CAN cable connections; service if it persists. | Owner fix |
| E100 | A maintenance reminder has timed out. | A reminder expired without action. | Open the maintenance reminder screen, address the item and reset. | Owner fix |
| E101 / E102 | Ventless hood fault: no pressure / filters not present. | Filters missing, clogged or not seated; hood fan, filter switch or pressure switch fault. | Install, clean or re-seat the hood filters; a cook cycle cannot start until cleared. | Owner fix |
| E103 / E104 | Option board not communicating. | CAN cable between option board and control board, DIP switch setting, or incompatible software. | Service. | Call service |
| E105 | No or low water pressure. | Water supply not connected, shut off, or blocked (check the filter). | Connect or open the water supply; clean the inlet filter. | Owner fix |
| E108 | Cooling fan failure (board between 140°F and 176°F). | Cooling fan malfunction or blocked air intake. | Clear the intake; service if the fan has failed. | Call service |
| E109 | High-limit switch open. | An overheat condition, cooling fan failure, heat relay stuck closed, or a faulty high-limit connection. | Press the high-limit reset once. If the condition remains, contact an Alto-Shaam service provider. | Call service |
| E200 | SD card larger than 2 GB detected. | Wrong SD card size. | Contact service to order a replacement SD card. | Call service |
| E210–E217 | VFD under-voltage, over-voltage, overheating, motor over-current, current peak, EEPROM error, over-current, short circuit. | Blocked fan wheel, cooling fan failure, convection motor or VFD malfunction. | Service. | Call service |
Source: Alto-Shaam Combitherm CT PROformance operator\'s manual MN-35948 Rev 21, p. 79.
Bosch
Bosch codes page →Bosch wall ovens including the HSLP451UC Benchmark steam convection oven (Bosch publishes one error-code page for all ovens and microwaves; the HSLP451UC Use and Care manual troubleshooting table lists no display codes)
| Code | What it means | Likely cause | What to do | Service? |
|---|---|---|---|---|
| E11 | The touch keys are not operating properly. | May be due to condensation on the keypad. | Clean the control panel with a dry cloth. Disconnect the appliance from the power supply by switching off the fuse in the fuse box and switch it back on after 10 seconds. | Owner fix |
| E + number (display only) | A malfunction has occurred. | Not specified; the code identifies the malfunction for service. | Note any error codes shown on the display. Disconnect the appliance from the power supply by switching off the fuse in the fuse box and call Bosch Customer Support at 1-800-944-2904 for assistance or to book a service visit. | Call service |
| E + number (display and beeping) | A fault/error code. | Not specified. | Press any button to stop the beeping. Reset the oven if necessary. If the error code continues to show, turn the oven off and call Bosch Customer Support at 1-800-944-2904. | Call service |
Source: Bosch USA owner support, Oven & Microwave error codes.
Thermador
Thermador codes page →Professional Series steam convection ovens PODS301W / PODS302W (and other Thermador steam ovens covered by the steam-oven error-code page)
| Code | What it means | Likely cause | What to do | Service? |
|---|---|---|---|---|
| E + number (display and beeping) | An electronics fault has occurred. | Electronics fault; the number identifies it for service. | Press any key (TIMERS on the support page) to stop the beeping. Reset the oven if necessary. If the code keeps appearing, turn the oven off and call Thermador Customer Support at 1-800-735-4328 or an authorized service provider. | Call service |
| E0211 | Home Connect software update error. | A Home Connect software update did not complete. | Follow the Home Connect error-code steps linked from the Thermador steam-oven error-code page; if the code is not resolved, contact Thermador Customer Support at 1-800-735-4328. | Call service |
| E1601 | Home Connect software update error. | A Home Connect software update did not complete. | Follow the Home Connect error-code steps linked from the Thermador steam-oven error-code page; if the code is not resolved, contact Thermador Customer Support at 1-800-735-4328. | Call service |
| E0510 | Home Connect software update error. | A Home Connect software update did not complete. | Follow the Home Connect error-code steps linked from the Thermador steam-oven error-code page; if the code is not resolved, contact Thermador Customer Support at 1-800-735-4328. | Call service |
Gaggenau
Gaggenau codes page →400 series combi-steam ovens BS 470/471 612, BS 474/475 612, BS 484/485 612
| Code | What it means | Likely cause | What to do | Service? |
|---|---|---|---|---|
| E182 | The appliance is not working because it is not receiving water. | The appliance does not receive water (empty, missing or incorrectly seated water tank). | Check the water tank (manual p. 37). If the display shows the error message again, contact Customer Service. | Call service |
| Exx (any other E code) | An error occurred. | Not specified; the number identifies the error for service. | Turn the function selector to the off position. If the display no longer shows the error, it was a one-off problem. If it continues or repeats, contact Customer Service and give them the error code. | Call service |
Wolf
Wolf codes page →Wolf convection steam ovens (CSO24, CSO30 and CSO3050 E-series/M-series, plumbed CSOP models); codes show as E-numbers, often paired with an F/U/A message on legacy displays
| Code | What it means | Likely cause | What to do | Service? |
|---|---|---|---|---|
| E01 (shown with message F5) | Control board fault | Problems with control board caused by moisture or EMC influences | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E02 (shown with message F5) | Control board fault | Control board issues caused by moisture or EMC influence | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E03 (shown with message F5) | Control board / process data fault | Loaded incorrect process data; Moisture on control board | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E04 (shown with message F5) | Process data or software fault | Process data error; Reload software error | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E05 (shown with message F5) | Control fault (legacy models) | Not stated in the article | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E09 (shown with message F0) | Oven temperature sensor (PT sensor) short circuit | Short circuit in PT sensor or in its wiring | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E11 (shown with message F0) | Processor fault | Processor faulty | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E12 (shown with message F0) | Processor or control board fault | Processor faulty; Control board issue; Temperature invalid | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E13 | Heating relay or temperature fault; maximum cavity temperature reached | Electromagnetic disturbances; Heating and main relay short circuited; Temperature sensor, relay error, or a programming issue; Reached maximum cooking space temperature | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E16 (shown with message A1) | Operation timed out waiting for input (door closed, tank filled) | Maximum hold time exceeded; An operation timed out while waiting for input | The oven cancels an operation left on hold (door open or tank empty) for more than 1-3 hours. Turn the home circuit breaker off for 30 seconds and back on; retest. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E17 (shown with message F1) | Food probe short circuit | Short circuit in food probe or in its wiring; Food probe not inserted into food, tip too hot; Moisture in food probe socket; Food probe temperature short circuit | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E18 (shown with message F1) | Food probe open circuit or loose contact | Break or loose contact in food probe or probe socket; probe wiring broken or loose contact; food probe resistance too high | Press the light button to clear the error; unplug the probe; check the probe receptacle for debris (canned air can help); reinsert the probe and test. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E25 (shown with message F3) | Climate sensor short circuit or blocked duct | Short circuit in climate sensor or in its wiring; Exhaust duct blocked; Duct between cooking space and sensor blocked | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E26 (shown with message F3) | Climate sensor open circuit or blocked duct | Break or loose contact in climate sensor or in its wiring; Exhaust duct blocked; Duct between cooking space and sensor blocked | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E27 (shown with message F17) | Climate sensor fault or over-temperature at sensor | Hairline crack in climate sensor; Temperature limit of the temperature sensor 300C exceeded; Excessively warm air flowing over the temperature sensor 300C during self-clean from a bad door gasket | No customer troubleshooting is published; contact Wolf Factory Certified Service for repair | Call service |
| E29 (shown with message F9) | Cooking space not sealed; too much cold food | Cooking space not tightly sealed; Door not closed properly; Exhaust slide valve not tight; Food probe socket issue; Too much cold food in the cooking space; Food probe socket dirty or wet; Hot air fan seal is missing or faulty; Slider stuck or defective; Seal or conduit to cavity defective; Too much cold food in cavity | Verify quantity of frozen food in unit; When steaming, weight of frozen food should not exceed 6.5 lb or 3 kg; Verify door is closed during use. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E33 (shown with message F12) | Power unit temperature sensor short circuit / relay board moisture | Processor faulty; Excessive moisture on the relay board; Short circuit in power unit temperature sensor | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E34 (shown with message F12) | Relay board open circuit | Processor faulty; Relay board open circuit | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E35 (shown with message F13) | Cabinet (niche) over-temperature or cooling fan fault | Cabinet opening temperature too high (may be caused by second appliance); Cool air fan failure; Power failure during operation; Over temperature | Reset the unit at the circuit breaker; Turn the unit back on to see if the error code reappears. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E36 (shown with message F14) | Control unit short circuit | Control unit faulty; Control board short circuit | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E37 (shown with message F14) | Control unit temperature sensor open circuit | Control issue; Open circuit in control unit temperature sensor | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E38 (shown with message F15) | Niche temperature too high | Niche temperature too high; Second appliance generating excess heat near appliance; Cool air fan issue; Power failure during operation | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E41 (shown with message F2) | Water temperature sensor short circuit or boiler leak | Short circuit in water temperature sensor or in its wiring; Boiler leaking water | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E42 (shown with message F2) | Water system fault (no customer detail published) | Not stated in the article | No customer troubleshooting is published; contact Wolf Factory Certified Service for repair | Call service |
| E44 (shown with message F7) | Boiler heating fault or over-temperature protection | Break in flange (fastening screws not tightened enough, etc.); Heating element for boiler faulty; Over-temperature protection activated; Food probe socket dirty or wet; Boiler very scaled up; Defective evaporator heater; Temperature sensor 100C temperature limiter is not resetting; Defective level measure pin | No customer troubleshooting is published; contact Wolf Factory Certified Service for repair | Call service |
| E45 (shown with message F8) | Actuator relay K3 stuck | Actuator relay K3 stuck; Element or relay board damaged | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E46 (shown with message F8) | Actuator relay K4 stuck | Actuator relay K4 stuck; Element or relay board damaged | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E47 (shown with message F8) | Actuator relay K5 stuck or not connected | Actuator relay K5 stuck or not connected; Element or relay board damaged | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E48 (shown with message F8) | Actuator relay K6 stuck or relay supply fault | Actuator relay K6 stuck; Element or relay board damaged; Relay supply circuit defective or plug not fitted correctly | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E49 (shown with message F10) | Button jammed or moisture on control unit | Button is mechanically blocked or jammed; Moisture on the control unit; Element or relay board damaged | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E50 (shown with message F10) | Moisture on control unit; room air fan not working; steam leak | Moisture on the control unit; Room air fan not working; Steam leak | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E51 (shown with message F6) | Relay calibration / neutral wiring fault | Software error on appliances with K3.20398-0 or K3.20398-1 software; neutral and pole conductor swapped on a 1-phase connection; processor faulty | No customer troubleshooting is published (the article notes a relay board replacement is the service fix); contact Wolf Factory Certified Service for repair | Call service |
| E52 (shown with message F10) | Water tank valve not tight | Water tank valve not tight | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E57 (shown with message U0) | Mains voltage too high at L1 (over 280 VAC) or neutral fault | Product connected to neutral conductor terminal; Neutral wire break in the house wiring system; Mains calibration error; Voltage at L1 greater than 280 VAC for more than three seconds | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E58 (shown with message U1) | No voltage at L2 or breaker tripped | No pole conductor connected to L2 clamp; Circuit breaker or fuse in the house wiring system activated; L2 voltage - over voltage | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E59 (shown with message U0) | Mains voltage at L1 low (155-176 VAC) or neutral break | Over voltage in mains electrical supply; Neutral conductor break in the house wiring system; Mains calibration error; Voltage at L1 was between 155 VAC and 176 VAC | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E61 (shown with message U2) | Mains under-voltage | Under voltage in mains power supply; Main calibration error | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E62 (shown with message U3) | Mains under-voltage | Under voltage in mains power supply; Mains calibration error | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E63 | Mains voltage not calibrated / low voltage | No calibration of main voltage, processor issue; Low voltage | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E66 | Boiler scaled or thermal cutout tripped | Boiler scaled up; Thermal cutout tripped; Microcontroller voltage on sensor module too low | Descale the oven if it has not been done recently. See CSO Descaling. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E67 (shown with message F20) | Boiler scaled or hose kinked; temperature sensing fault | Boiler scaled up; Silicon hose kinked; Temperature sensing issue | Turn the home circuit breaker to the unit off for 30 seconds and back on again. Retest the unit operation; Descale the oven if it has not been done recently. See CSO Descaling. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E68 | Boiler scaled, inlet valve leaking, foam in boiler or tank leaking | Boiler scaled up; Inlet valve leaking (valve not tight, limescale fragments in seal, etc.); Foam in the boiler housing (especially after descaling); Water tank is leaking | Descale the oven if it has not been done recently. See also, CSO Descaling; Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E69 (shown with message F21) | Boiler scaled, inlet valve leaking, foam or tank microswitch fault | Boiler scaled up; Inlet valve leaking (valve not tight, limescale fragments in seal, etc.); Foam in the boiler housing, especially after descaling; Water tank microswitch | No customer troubleshooting is published. The article notes that if descaling was done recently, the water system pumping off water at least three times within 2 hours or a non-recommended descaling solution that foams can trigger it; contact Wolf Factory Certified Service for repair | Call service |
| E70 | Boiler scaled or inlet valve leaking | Boiler scaled up; Inlet valve leaking (valve not tight, limescale fragments in seal, etc.) | Descale the oven if it has not been done recently. See CSO Descaling. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E71 (shown with message F22) | Boiler scaled, inlet valve leaking, tank motor or door lock fault | Boiler scaled up; Inlet valve leaking; Short circuit in the drive motor for the water tank; Pyrolysis door lock circuit defective | Descale the oven if it has not been done recently. See CSO Descaling. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E72 | Drain pump moving too little water or water conductivity too low | Drain pump pumping off too little water; Water conductivity too low; Foam in boiler housing (unsuitable descaling agent); Open circuit in the drive motor of the water tank; Top heat actuator defective or not connected | Verify Convection Steam Oven water requirements are met. See CSO Water Requirements; Descale the product if it has not been done recently. See CSO Oven Descaling. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E73 (shown with message F23) | Drain pump moving too little water or water conductivity too low | Drain pump pumping off too little water; Water conductivity too low; Foam in boiler housing (unsuitable descaling agent) | Verify the water requirements for the Convection Steam Oven are met. See CSO Water Requirements; Descale the product if it has not been done recently. See CSO Oven Descaling. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E74 | No descaling solution detected / level measurement error | No descaling solution added during descaling; Error in measurement of level (possibly due to formation of foam); Retractable handle issues; Grill actuator defective or not connected | For knob control models, verify descaling solution was added to the unit if descaling is in process. See CSO Oven Descaling; Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E75 (shown with message F22) | Insufficient rinse water or excessive foam | Insufficient amount or no water for rinsing; Excessive build-up of foam; Retractable handle issue; Bottom heat actuator issue | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E76 | Insufficient rinse water or excessive foam | Insufficient amount or no water for rinsing; Excessive build-up of foam; Retractable handle issue | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E77 (shown with message F22) | Exhaust slide valve stuck or slide motor short | Exhaust slide valve stuck with grease deposits; Motor or slide valve jammed (mechanical defect); Short circuit in slide motor or in its wiring | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E78 (shown with message F24) | Drain sump level sensor fault (plumbed CSOP models) | Draining of plumbed CSO; Drain Sump level sensor pin dirty; Short circuit in Drain Sump level sensor; Short circuit in Sensor Module | Flush drain with plenty of hot water to clean grease off level sensor pin. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E84 | Slider not initialized | Slider not initialized | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E85 (shown with message F4) | Slide or stepper motor short circuit | Short circuit in slide motor or in its wiring; Short circuit in stepper motor | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E86 (shown with message F4) | Slide or stepper motor open circuit | Break or loose contact in slide motor or in its wiring; Open circuit in the stepper motor | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E87 (shown with message F4) | Exhaust slide valve stuck or slider blocked | Exhaust slide valve stuck with grease deposits; Motor or slide valve jammed (mechanical defect); Short circuit in slide motor or in its wiring; Slider blocked | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E88 | Exhaust slide valve stuck or slider in stop position | Exhaust slide valve stuck with grease deposits; Motor or slide valve jammed; Slider in stop position | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E97 | Operating system fault | Operating system issue | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E98 | Operating system fault | Operating system issue | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E99 | Operating system fault or moisture on control board | Operating system issue; Moisture on control board | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E100 | Operating system fault or moisture on relay board | Operating system issue; Moisture on relay board | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E105 | Operating system fault or moisture on control board | Operating system issue; Moisture on control board | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E106 | Operating system fault or moisture on control board | Operating system issue; Moisture on control board | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E107 | Operating system fault or moisture on control board | Operating system issue; Moisture on control board | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E108 | Operating system fault or moisture on control board | Operating system issue; Moisture on control board | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E109 | Operating system fault or moisture on control board | Operating system issue; Moisture on control board | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E110 | Operating system fault or moisture on control board | Operating system issue; Moisture on control board | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E111 (shown with message F5) | Operating system / control board fault | Operating system issue; Control board | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E112 (shown with message F5) | Operating system / relay board fault | Operating system issue; Relay board | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E113 | Operating system / control board fault | Operating system issue; Control board | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| E114 | Operating system / control board fault | Operating system issue; Control board | Turn the home circuit breaker to the unit off for 30 seconds then back on again; Retest the unit operation. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| Fatal Error. Please check software and hardware configuration! | Software/hardware configuration fault | Not stated in the article | No customer troubleshooting is published; contact Wolf Factory Certified Service for repair | Call service |
| F1 | Food probe fault | Food probe not inserted into food; moisture in the food probe socket; food probe needs to be replaced | Verify the probe is inserted into food and fully seated in the socket; turn the home circuit breaker off for 30 seconds and back on; retest. If the code remains, contact Wolf Factory Certified Service for repair | Call service |
| Boiler scaled up, please descale! | The steam boiler needs descaling | Limescale build-up in the boiler; interval depends on water hardness (every 6-18 months) | Run the Descale cycle (Settings > Descale) using Durgol Swiss Steamer descaling solution; see guide p. 14 | Owner fix |
| Appliance blocked, descaling necessary | The oven has locked out steam functions until it is descaled | Descaling overdue | Run the Descale cycle (guide p. 14). If the message does not disappear after descaling, contact Wolf Factory Certified Service | Call service |
| Do not remove water tank | Boiler water has not yet been pumped back to the tank | Water in the boiler is not pumped off until its temperature drops below 175 F (80 C) | Wait for the oven to cool and the message to clear before removing the tank | Owner fix |
| Add 1 pt (0.5 L) descaler-and touch ENTER | Descale cycle prompt to add descaling solution | Descale cycle started from Settings | Pour the entire Durgol Swiss Steamer descaling solution into the water tank and touch ENTER (guide p. 14) | Owner fix |
| Pour away descaler-fill with water | Descale cycle prompt to empty the tank and refill for rinsing | Descaling phase (about 30 minutes) is complete | Dilute and pour away the descaler, fill the tank with fresh water and continue; the display then shows Descale appliance-1st rinsing cycle and finally Descaling completed (guide p. 14) | Owner fix |
Sources: Convection Steam Oven Error Code E01 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E02 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E03 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E04 (Sub-Zero Wolf support article); Legacy Convection Steam Oven Error Code E05 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E09 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E11 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E12 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E13 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E16 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E17 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E18 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E25 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E26 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E27 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E29 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E33 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E34 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E35 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E36 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E37 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E38 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E41 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E42 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E44 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E45 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E46 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E47 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E48 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E49 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E50 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E51 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E52 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E57 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E58 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E59 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E61 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E62 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E63 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E66 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E67 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E68 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E69 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E70 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E71 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E72 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E73 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E74 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E75 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E76 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E77 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E78 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E84 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E85 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E86 (Sub-Zero Wolf support article); Wolf Convection Steam Oven Error Code E87 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E88 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E97 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E98 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E99 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E100 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E105 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E106 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E107 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E108 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E109 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E110 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E111 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E112 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E113 (Sub-Zero Wolf support article); Convection Steam Oven Error Code E114 (Sub-Zero Wolf support article); Convection Steam Oven Fatal Error Message (Sub-Zero Wolf support article); Convection Steam Oven Displays Error F1 (Sub-Zero Wolf support article); Wolf Convection Steam Oven Use and Care Guide (csoven-ucg-v2.pdf), p. 17 Troubleshooting.
Anova
Anova codes page →Anova Precision Oven 1.0 and 2.0 (messages shown on the oven handle/screen and in the Anova Oven app)
| Code | What it means | Likely cause | What to do | Service? |
|---|---|---|---|---|
| Fill Error / fill light | The oven does not detect enough water (Precision Oven 1.0); shown in the app and on the oven handle | Tank not seated properly; tank below the minimum line; outdated firmware | Reseat the tank with a little downward pressure; fill above the minimum line (at least half full); hold the fill light icon until it clears; check firmware in the Oven App (More > General > Firmware version). If it persists: with the oven not running press the fill icon, then run Sous Vide Mode Off, 212 F, 100% steam to dose the boiler and reset the sensors | Owner fix |
| Fill (tank is full) | Fill notification shown although the tank is full (Precision Oven 1.0) | Tank not seated; water-level sensors need resetting | Reseat the tank; fill at least half full; with the oven on but not running press the fill icon; run Sous Vide Mode OFF / 212F / 100% steam. If that does not help, email [email protected] | Call service |
| NEED SERVICE + error code | Internal error checking detected a heating element fault (Precision Oven 1.0, firmware 1.1.31 and later); the two messages cycle until the oven is unplugged | Heating element operation check failed | Unplug the oven; contact Anova support | Call service |
| 408 Needs Service (formerly shown as I 9) | Service-required error (Precision Oven 1.0, firmware 2.1.3 renamed the I 9 message to 408 Needs Service) | Not stated; the changelog also notes cooks cannot be started from the app when the handle shows an error due to a broken NTC sensor | Contact Anova support | Call service |
| Error 221 pop-up | Error pop-up on Precision Oven 2.0 that Anova removed in firmware 11_209_1.2.17_01.01.14 | Not stated in the changelog | Update the oven firmware; the pop-up no longer appears on current firmware | Owner fix |
| Anova Onboard App is not responding (error screen) | Oven 2.0 interface failed to load after the 28 July 2025 firmware update | Faulty firmware update (black screen issue) | Keep the oven awake and connected to WiFi through the 1-4 AM overnight update window so it receives the fixed firmware; if it does not update, contact Anova customer support with your account email | Call service |
Sources: Anova Support: Oven Fill Error; Anova Support: My Oven is showing fill despite the tank being full; Anova Support: Anova Precision Oven 1.0 Firmware Changelog; Anova Support: Anova Precision Oven 2.0 Firmware Changelog; Anova Support: July 28th 2025 Oven 2.0 Firmware update Issue and how to fix.
Fisher & Paykel
Fisher & Paykel codes page →Fisher & Paykel OS30NDLX1 combination steam oven (the Quick Reference link on the product page serves the same user guide); the A1 / F+number table is generic to the Series 7/9 combi-steam range
| Code | What it means | Likely cause | What to do | Service? |
|---|---|---|---|---|
| A1 | The oven has overheated | Oven overheated | Allow the oven to cool down. Once it has cooled and the door has unlocked the code disappears and the oven can be used | Owner fix |
| F + number | Technical fault | Technical fault (not itemised in the guide) | Note down the alert code; wait until the cooling fans have stopped and the oven has completely cooled; turn the power off at the wall; contact a Fisher & Paykel trained and supported service technician or Customer Care | Call service |
| Tank not present | The oven does not detect the water tank | Tank not completely in place | Push the tank completely into the space | Owner fix |
| Descale alert (steam functions unavailable) | Descaling is required before steam functions can be used | Descale required; tank not installed correctly; tank level too low | Refer to the screen for the cause and follow the onscreen guidance; run Steam Descale (Settings) as soon as possible after the alert is shown, otherwise steam functions may become unusable (p. 37) | Owner fix |
Source: Fisher & Paykel OS30NDLX1 Combination Steam Oven User Guide (432079A US-CA), p. 43 Fault codes.
Tovala
Tovala codes page →Tovala Smart Oven Pro and Smart Oven (2nd Generation); the display shows icons rather than text codes for most states
| Code | What it means | Likely cause | What to do | Service? |
|---|---|---|---|---|
| Add Water | The water reservoir needs filling | Reservoir empty | Fill the reservoir with 1 cup of tap water (Smart Oven Pro) | Owner fix |
| Door-open icon (door not shut) | The oven door is not completely shut when a cooking function is attempted | Door not fully closed | Close the door fully and restart the function | Owner fix |
| WiFi icon (not connected) | The oven is not connected to WiFi | No WiFi connection; the oven only joins 2.4 GHz networks | Reconnect through the Tovala app (2.4 GHz network); see WiFi troubleshooting on p. 10 (Pro) / p. 9 (Gen 2) | Owner fix |
| Error icon (unable to perform a function) | The oven is unable to perform a function | Not stated in the manual | Email Tovala Customer Support at [email protected] or live chat with Customer Support at tovala.com | Call service |
Source: Tovala Smart Oven Pro User Manual (20230120_UserManual_SmartOvenPro_WEB.pdf), p. 10 Oven Controls.
Cuisinart
Cuisinart codes page →Cuisinart Combo Steam + Convection Oven CSO-300 (same booklet family as CSO-300N / CSO-300N1)
| Code | What it means | Likely cause | What to do | Service? |
|---|---|---|---|---|
| Add Water indicator (continuous beeping, unit shuts off) | The water reservoir needs to be filled | Steam reservoir is empty; a full reservoir runs about 2 hours on a steam function | Fill the reservoir and replace it on the oven; wait 30 seconds and press the program button; the oven resumes from the point the cycle was interrupted | Owner fix |
What the fixes above usually need
Most owner-fixable codes come down to scale. Use the descaler your manual names: Miele and Thermador specify their own. Affiliate links, at no cost to you.
Durgol Swiss Steamer descaler
A general-purpose steam-oven descaler, for ovens whose manual allows a generic one (Anova says any descaling liquid works). Miele and Thermador name their own descalers; use those instead.
View on Amazon · ~$21
Miele descaling tablets
The tablets Miele's own descale program expects. Clears the F20 message on DGC combi-steam ovens.
View on Amazon · ~$22
Weiman stainless microfiber cloth
A soft, non-abrasive cloth for drying the door and cavity after a steam cycle. Every manual we checked rules out scouring pads and abrasive cleaners.
View on Amazon · ~$9
Missing your brand? We only publish codes we can source to an official manual. The Manual Library has the full PDF for every oven we track, and a brand missing here either publishes no code table (Balmuda, Panasonic, Smeg, Robam, Dreo) or we could not obtain an official document. Spot a code we got wrong? Tell us.