Compressor(s) Won’t Start

What does Compressor(s) Won’t Start mean?

The compressor(s) on the unit are not starting when expected.

• Demand not great enough
• Defective water temperature sensor
• Contactor/Overload failure
• Driver failure (for inverter compressor)
• Compressor failure

Click steps to track your progress.

1. 1

   Confirm system demand is sufficient for compressor operation.

2. 2

   Compare water temperature sensor readings with a thermometer (should be within +/- 2 degrees).

3. 3

   Replace defective contactor or overload components.

4. 4

   Check driver running status and related LEDs for inverter compressors.

5. 5

   Diagnose and replace failed compressor if necessary.