Troubleshooting steps
Check outdoor coil sensor; verify wiring
HVAC Error Codes
Trane E4 Error
Outdoor coil temperature sensor fault
Details
Trane E4 error indicates a problem with the outdoor coil temperature sensor.
Error typeSensor Fault
Typical causesFaulty outdoor coil sensor; wiring issue
SolutionsCheck outdoor coil sensor; verify wiring
SeverityMedium
Catalog references
Where this appears
TraneE4
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