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Error code reference

Goodman Heat Pump Error Codes

29 error codes documented with diagnostic procedures.

Have your model number? Get codes specific to your unit.
01Low side fault02High side fault03Short cycling04Locked rotor05Open circuit06Open start circuit07Open run circuit08Low line voltage (less than 185 VAC) or high line voltage (greater than 255 VAC) detected…09Low pilot voltageA2Outdoor air temperature sensor faultA3Outdoor coil temperature sensor faultb0Blower motor not running when it should be runningb1Blower motor communication error.b2Blower motor HP mismatch.b3Blower motor operating in power, temperature, or speed limit.b4Blower motor current trip or lost rotor.b5Blower motor rotor locked.b6Over/under voltage trip or over temperature trip.b7Incomplete parameter sent to motor.b9Low indoor airflowd0Data not yet on networkd1Invalid data on networkd2System mis-matchd3Configuration mis-matchd4Invalid memory card dataE5Open fuseEcHeater kit too large, too small, or no matchEEInternal fault / board misoperationEFAuxiliary switch open.

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More Goodman error codes

Common questions

How do I find the error code on my Goodman Heat Pump?
Most Goodman heat pumps show the code directly on the control panel display. If your model has no display, it can be read by entering diagnostic mode with the key sequence for your model. The full procedures include model-specific instructions for reading codes.
Are these codes specific to my model?
The codes here apply broadly to Goodman heat pumps. Meanings and diagnostic steps can vary by model and production year, so enter your model number for model-specific information and procedures.
What do I do if my code is not listed?
Some codes are model-specific or only appear in diagnostic mode. Enter your model number to get codes specific to your unit, or contact us. We update the database continuously from manufacturer service documentation.
How much does it cost to access the full diagnostic procedures?
A 3-day pass is $9.95 one-time and gives full access to all brands, codes, and procedures. Monthly access is $29/month with unlimited access to everything including Max AI diagnostics.