LENNOX ML14XC1 Ice On Coils Blowing Warm
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
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91%
CONF
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Thermal Expansion Valve (TXV) Kit
The TXV modulates refrigerant flow based on heat load; if the internal needle sticks or the sensing bulb loses charge, it starves the evaporator. This causes a localized pressure drop, leading to a sub-freezing saturation temperature that turns condensate into ice. Once the coil is encased in ice, heat transfer is halted, causing the system to circulate uncooled air.
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VIEW ON AMAZON
#CommissionsEarned
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5%
CONF
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Blower Motor Run Capacitor
A degraded run capacitor prevents the indoor blower motor from maintaining the required RPM to move sufficient air over the evaporator coil. Without the thermal load provided by warm indoor air, the refrigerant does not boil off completely, causing the coil temperature to plummet and freeze. This mechanical failure leads to total airflow blockage due to ice accumulation.
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VIEW ON AMAZON
#CommissionsEarned
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|
4%
CONF
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Evaporator Coil Assembly
Lennox units in this series are susceptible to formicary corrosion in the copper or aluminum tubing of the indoor evaporator coil. A micro-leak leads to a low refrigerant charge, which reduces the suction pressure and associated saturation temperature. The resulting ice formation is a thermodynamic consequence of the low-pressure state within the vapor-compression cycle.
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VIEW ON AMAZON
#CommissionsEarned
|
DIY Repair Guide
Watch exactly how to replace the Thermal Expansion Valve (TXV) Kit.
// 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.