Red LED flashes twice — Motor thermistor open or shorted

What does Red LED 2 flashes mean?

The motor PTC thermistor circuit shows a resistance value indicating it is open or shorted. This stops the compressor. The system attempts to reset after 30 minutes if the thermistor returns to a normal resistance range. A lockout occurs after 6 hours of the fault condition.

• Motor PTC thermistor circuit is open or shorted
• Faulty thermistor wiring harness
• Loose connections at the module or thermistor

Click steps to track your progress.

1. 1

   Check for loose connections at the module and thermistor.

2. 2

   Inspect the thermistor wiring harness for continuity.

3. 3

   Check for an open thermistor circuit.

4. 4

   Allow 30 minutes for automatic reset if resistance is normal.

5. 5

   If locked out, cycle power to the module.