Troubleshooting steps
Check sensor connections verify sensor operation test sensor replace if faulty
HVAC Error Codes
E3 – Coil temperature sensor fault
Coil temperature sensor error detected
Details
Coil temperature sensor is not reading correctly or has failed.
Error typeerror
MeaningTemperature sensor fault
Typical causesSensor disconnected sensor fault wiring fault
SolutionsCheck sensor connections verify sensor operation test sensor replace if faulty
Severitymedium
Catalog references
Where this appears
CarrierE3
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FAQ
Common questions
What is coil temperature sensor?
Coil temperature sensor measures evaporator or condenser coil temperature.
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