GOODMAN GSZ140241LA Ice On Coils Blowing Warm
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
|
93%
CONF
|
Defrost Control Board
The defrost control board is the logic center that monitors the outdoor coil temperature to prevent icing. A failure in the board's internal relay or timing logic prevents the system from switching the reversing valve into the defrost state. This causes frost to build up into a solid ice block, creating a thermal barrier that stops heat transfer.
SKU: PCBDM133
|
|
|
4%
CONF
|
Defrost Thermistor (Sensor)
This thermistor monitors the temperature of the outdoor coil to signal the control board when a defrost cycle is required. If the thermistor's resistance drifts or fails open, the control board never receives the signal that the coil is freezing. Consequently, the unit continues to run in heating mode until the outdoor coil is completely encased in ice.
SKU: 0130M00138
|
|
|
3%
CONF
|
Reversing Valve Solenoid Coil
The solenoid coil provides the electromagnetic force required to shift the reversing valve during a defrost cycle. If the coil is electrically compromised, the valve will not shift into the cooling/defrost position even if the control board is functioning correctly, resulting in continuous ice accumulation on the exterior heat exchanger.
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DIY Repair Guide
Watch exactly how to replace the Defrost Control Board.
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.