E35 - Outdoor unit heat exchanger sensor (ThOR) defective or cooling high pressure

What does E35 mean?

The outdoor unit's heat exchanger sensor (ThOR) is detected as defective (open or closed circuit), or there is abnormally high pressure in the cooling circuit.

• Damaged outdoor heat exchanger sensor (ThOR).
• Poor connection of the sensor connector on the outdoor unit PCB.
• High pressure in the cooling system (e.g., due to overcharge, blocked coils).

Click steps to track your progress.

1. 1

   Turn off the air conditioning unit and allow it to cool down for at least one hour.

2. 2

   Check for any visible debris blocking the outdoor unit's heat exchanger coils.

3. 3

   Restore power and restart the unit.

4. 4

   If the error persists, contact a qualified technician to inspect the sensor and refrigerant pressure.