Red LED flashes once — Motor high temperature

What does Red LED 1 flash mean?

The motor's PTC circuit has exceeded a high resistance limit, indicating high motor temperature. This will open the M2-M1 contacts, stopping the compressor. The system will attempt to reset after 30 minutes if the temperature normalizes. Five consecutive alerts will cause a lockout.

• Motor overheating due to high resistance
• High system temperatures or poor airflow
• Power supply issues

Click steps to track your progress.

1. 1

   Check the power supply to the unit.

2. 2

   Inspect for proper system charge and superheat levels.

3. 3

   Examine the compressor contactor for issues.

4. 4

   Allow 30 minutes for automatic reset if the temperature has normalized.

5. 5

   If locked out, cycle power to the module.