Verified from the manual · Updated October 2026
NuWave steam oven error codes
3 codes for NuWave Combi Steam Oven 16Qt (BM38091), transcribed from the official documentation with page references.
| 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.
Before you call NuWave
- 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 NuWave 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