''TEMP Sensor ERR'' on your E+ display means there is a problem with the outlet sensor. Check the outlet sensor for damage (it is the black sensor on the outlet grill) and replace if required. Please click here to view and order a replacement sensor online if needed. Please refer to the E+ electric unit heater installation manual for more information.
What does 'TEMP Sensor ERR' mean on the E+ display?
Information on Reznor's range of warm air heaters