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American Standard Service Manuals & Error Codes
20Service Manuals
9Error Codes
4Appliance Types
American Standard Appliance Types
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Top Error Codes for American Standard
CodeTypeDescription
1Air ConditionerNormal operation (LED continuously ON).2Air ConditionerNo power to the board or the control board has failed.3Air ConditionerCompressor failure detected.4Air ConditionerBlown fuse detected.5Air ConditionerMode switch or setpoint switch fault, or incorrect thermostat wiring.6Air ConditionerIndoor air thermistor fault.7Air ConditionerIndoor coil thermistor fault.8Air ConditionerOutdoor air thermistor fault (PTHP models only).9Air ConditionerOutdoor coil thermistor fault (PTHP models only).