Carrier · 38AP Air Handler
A phase is missing in one of the three leads supplying power to the compressor. This will stop the compressor. The system will attempt to reset after 5 minutes if the phase condition is corrected. Lockout occurs after 10 consecutive alerts.
Click steps to track your progress.
Check incoming power supply for all three phases.
Inspect fuses or circuit breakers supplying power.
Verify the compressor contactor is functioning correctly.
Allow 5 minutes for automatic reset if the condition is resolved.
If locked out, cycle power to the module.