Verified from the manual · Updated October 2026
Tovala steam oven error codes
4 codes for Tovala Smart Oven Pro and Smart Oven (2nd Generation); the display shows icons rather than text codes for most states, transcribed from the official documentation with page references.
| 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.
Before you call Tovala
- Refill and re-seat the water tank, and straighten any inlet or drain hose you can reach.
- Run the descale program if the oven has one, with the manufacturer's descaler, not vinegar.
- Switch the oven off at the wall for a minute and back on. One power-cycle is in nearly every manual; repeated resets are not.
- If the same code returns, note it with the serial number and book service. Every sensor, probe, fan or board code above is listed by Tovala as a service call.
Maintenance that prevents the water codes
Regular descaling with the product your manual names prevents most of the scale-related faults above. Affiliate links, at no cost to you.
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
The tablets Miele's own descale program expects. Clears the F20 message on DGC combi-steam ovens.
View on Amazon · ~$22
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