Error Code E1 indicates an open circuit in the temperature monitor. This is not user-serviceable.
- Turn off and unplug the air fryer immediately.
- Allow it to cool completely.
- Plug it back in and turn it on. If E1 persists, do not use the appliance.
IF THAT DIDN'T WORK: If the error code returns, the internal temperature sensor has failed. Contact Cosori Customer Support. Do not attempt to open or repair it yourself.
HEADS UP: Other error codes: E2 is a short circuit in the temperature monitor. E3 means the overheat protection activated—let it cool fully. E4 means it was plugged into a 220-240V outlet; only use 120V, 60Hz.