Air Conditioner Service Manuals & Error Codes

Service manuals, error codes, and parts diagrams for air conditioner repair across all major brands.

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1,603Error Codes

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MyPros+ Max

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M+

M+ Max·Whirlpool Air Conditioner

My appliance shows an error code

M+

Control board fault diagnosis

From Tech Sheet W10810403, p.8:

1.Access the service diagnostic mode using the tech sheet procedure. Record all stored fault codes from the error history, not just the most recent active code.

2.Measure control board supply voltage at the test points. Expected: 12 VDC and 5 VDC. A drop below 4.75 VDC on the logic rail points to a failed onboard regulator.

3.Inspect all connectors on the main control board for corrosion, thermal stress, or backed-out pins. Reseat each connector with the power disconnected.

Part WPW10804018

Electronic control board

Top Error Codes for Air Conditioner Repair

CodeBrandDescription

E0WhirlpoolNo errors - ice maker is operational.E1WhirlpoolNo cooling - ice maker timed out, the ice compartment could not reach...E2WhirlpoolMotor lost position - ice maker cannot find home position during...E3WhirlpoolHeater time-out - ice maker mold heater was powered beyond the...E4WhirlpoolDry cycle - the appliance detected dry cycles exceeding the minimum...E5WhirlpoolTimed ice making - ice storage temperature is satisfactory but the...ErWhirlpoolCommunication failure (manufacturing error code context).01LGIndoor room thermistor error (open/short circuit, poor solder, or...02LGIndoor inlet pipe thermistor error (open/short circuit, poor solder,...03LGCommunication error between wired remote controller and indoor unit -...04LGDrain pump malfunction — float switch open due to rising condensate...05LGCommunication error between outdoor unit and indoor unit - indoor...06LGIndoor outlet pipe thermistor error (open/short circuit, poor solder,...07LGOperation mode between indoor unit and outdoor unit is different -...09LGIndoor unit EEPROM error — error in transmission between...

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Amana Crosley Daewoo Electrolux Frigidaire GE Haier Kenmore Lennox LG Samsung Trane

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