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Error code reference
Goodman Air Conditioner Error Codes
28 error codes documented with diagnostic procedures.
Have your model number? Get codes specific to your unit.
brBrown Out Protection engagedC1Indoor Coil is freezing up.C2Indoor Air RecirculationC3Indoor Coil is freezing up.C4Indoor Coil froze up.C5Outdoor Coil temperature too high for outdoor ambient temperature.C6Poor Unit Performance.C7Indoor Freezing Lockout (ICTEHEmergency Hydronic EngagedEoUn-Configured Service BoardF1Indoor Ambient Thermistor reads outside the range -20°F to 200°F and the wireless…F2Wireless Remote Thermostat failure.F3Indoor Ambient Thermistor reads outside the range -20°F to 200°F.F4Indoor Coil Thermistor either above or below operating tolerances.F5Wireless Thermostat failure.F6Indoor Discharge Thermistor either above or below operating tolerances.FbLow Remote Battery Warning.FdFront Desk switch is closed; all outputs are switched off.FPFreeze Protection EngagedH1High Voltage Protection engagedHPHeat SentinelL6Discharge Air Too Hot.LCOutdoor Coil Thermistor temperature high.LSLoad Shedding EngagednPWindow Switch Lockout (LS & INN open)OnControl is configured to respond to a wired thermostat.oPOpen Door Lockout (DS1 & DS2 open; wireless)UrUn-Rented Status (EHH & INN or wireless).
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Common questions
How do I find the error code on my Goodman Air Conditioner?
Most Goodman air conditioners 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 air conditioners. 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.