Operation LED blinks 8 times and Timer LED shows 15 — Compressor temperature thermistor error.

What does Operation 8 Times / Timer 15 mean?

The thermistor sensing the compressor temperature is detecting an abnormal reading.

• The compressor temperature thermistor is open (disconnected) or shorted (faulty connection).
• The controller PCB is defective.

Click steps to track your progress.

1. 1

   Power off the unit at the circuit breaker.

2. 2

   Visually inspect the compressor temperature thermistor for any visible damage or loose connections.

3. 3

   If the error persists, a technician should check the thermistor's resistance or the controller PCB.