Troubleshooting steps
Check sensor connections verify sensor operation test sensor replace if faulty
HVAC Error Codes
E8 – Defrost sensor fault
Defrost sensor error detected
Details
Defrost sensor is not reading correctly or has failed.
Error typeerror
MeaningDefrost 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
CarrierE8
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FAQ
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What is defrost sensor?
Defrost sensor detects ice buildup on heat pump coils.
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