Rheem Error Code A055: Fan Motor Locked

Severity
Warning
Type
digital display
Where to look
front panel
Estimated repair cost: $250 — $600 (parts + labor)
Warning: Your Rheem HVAC system has detected a fan motor issue and has locked out for safety.

How to Fix Rheem Code A055

  1. Check for and remove any obstructions around the fan blades or motor
  2. Inspect the fan motor and its wiring for any visible damage or loose connections
  3. If the issue persists, contact a professional HVAC technician for further diagnosis and repair

How to Reset Rheem Code A055

  1. Turn off the unit using the power button on the front panel.
  2. Turn off the gas supply valve.
  3. Turn off the circuit breaker supplying power to the unit. Wait 30 seconds.
  4. Restore power at the breaker, then open the gas valve.
  5. Turn the unit back on. If the error returns, the underlying issue needs repair.

What does A055 mean?

The Rheem A055 error code indicates that your system's fan motor has locked up, preventing it from running. This could be due to an obstruction, a faulty motor, or an issue with the motor's control circuit. The system has automatically shut down to prevent damage or fire hazard. Do not attempt to restart the system until the issue is resolved.

Affected Models

Replacement Parts

PartOEM NumberEst. Cost
Fan Motor Assembly RHEEM 388368 —
Control Circuit Board RHEEM 388369 —

Related Codes on Same Models

CodeDescriptionSeverity
A001 Ignition Failure Warning
A003 Abnormal Ignition Warning
A004 False Flame Detection Warning
A008 Exhaust Temperature High Warning
A011 No Flame Detected Warning
A021 Over-Temperature Warning
A031 Inlet Thermistor Open/Short Warning
A041 Outlet Thermistor Open/Short Warning
A043 Water Level Error Warning
A051 Fan Motor Abnormality Warning