Applicable Systems
Carrier ComfortLink Thermostat/Controller
Symptoms
Loss of charge. The system has lost a significant amount of refrigerant charge.
Possible Causes
- Refrigerant leak in the system
- Service valve left partially open
Troubleshooting Steps
- Step 1: Perform a leak test on the entire system
Leak is identified at a fitting or coil - Step 2: Repair the leak and recharge the system
System holds charge after repair
How to Reset
To reset: Repair the leak, recharge, and reset the controller.
Source: Carrier HVAC Troubleshooting Guide, Carrier Corporation
Category: HVAC Residential