Applicable Systems
Carrier ComfortLink Thermostat/Controller
Symptoms
Compressor motor overload. The compressor motor overload protection has tripped due to excessive current.
Possible Causes
- Compressor motor winding degradation
- System operating outside design causing overcurrent
Troubleshooting Steps
- Step 1: Check the compressor motor current
Current exceeds the rated value - Step 2: Measure the motor winding resistance
Winding resistance indicates degradation
How to Reset
To reset: Fix the motor or system issue, then reset the overload.
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Source: Carrier HVAC Troubleshooting Guide, Carrier Corporation
Category: HVAC Residential
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