Applicable Systems
Carrier ComfortLink Thermostat/Controller
Symptoms
Open run capacitor. The compressor run capacitor has failed open circuit.
Possible Causes
- Run capacitor reached end of life
- Capacitor damaged by heat or voltage surge
Troubleshooting Steps
- Step 1: Check the run capacitor capacitance
Capacitance is below specification or open - Step 2: Replace the run capacitor with the correct rating
Compressor runs normally
How to Reset
To reset: Replace the run capacitor, then reset the controller.
Source: Carrier HVAC Troubleshooting Guide, Carrier Corporation
Category: HVAC Residential