If the grill temperature sensor has failed, or is not connected (plugged in) well, Error 21 will be displayed and the grill will shut down. If this occurs a food probe (P1 or P2) can temporarily be used in its place.
Using this alternative temperature sensor is also useful if the temperature sensor is giving strange reading (very high) but Error 21 hasn’t actually occurred.
Food Probe Location

Position the food probe temperature sensor down beside the grill temperature sensor (half way down the cage)
Controller Setting
On the controller with the grill awake but not operating, navigate to:
MENU -> SETTINGS -> Grill Temperature Probe –> Probe 1

Don’t forget to change back to Grill once the temperature sensor has been replaced.
Trimal App Setting
The setting can also be changed on the App, and can be done whilst the grill is operating (unlike on the controller). The food probe must be plugged in otherwise an temperature sensor error will occur.
Get Replacement Grill Temp Sensor
If the grill temperature sensor has failed, or is giving bad (normally high) readings a new one can be provided during the 3 year warranty period. Please send us a support request.