E7 means the outdoor air temperature sensor is at fault. The unit uses that sensor to know the outdoor temperature. The code appears on the indoor display. The safe check on the sheet is to write down E7, shut the breaker off for a few minutes, and restore power. If E7 comes back, call support and give them the code plus the model number. The repair is pro-only. Do not relocate the outdoor sensor or disconnect it to see if the code changes. A licensed technician tests that part. Leaving the system in a restart loop does not fix a failed sensor.
What to do
- 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.
Call support: 1-800-349-4360 Ext. 204