E2: Indoor pipe temperature sensor fault

E2 means the indoor pipe temperature sensor is at fault. This is the sensor on the indoor refrigerant pipe, not the room-air sensor (that one is E1). The owner step on the sheet is to note the code, kill power at the breaker for a few minutes, and turn it back on. If E2 returns, call support with the code and the model number. The page marks this repair pro-only. Pipe sensors sit in the refrigeration circuit's controls, so leave the coil and the wiring harness to a licensed HVAC technician. Do not keep resetting the breaker all afternoon if the code returns each time.

What to do

1. 1Note the code, switch the unit off at the breaker for a few minutes, then switch it back on. If the code returns, call support with the code and your model number.

Sensor, board, fan motor and refrigerant repairs need a licensed HVAC technician. Have your model number and purchase date ready when you call.