RUUD RA16 Freezing Up At Coil
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
|
86%
CONF
|
Pleated Air Filter (1-inch to 5-inch depending on cabinet)
The most common cause of coil icing is restricted airflow. If the filter is fouled with particulate matter, the volume of warm return air passing over the evaporator coil is insufficient to transfer heat to the refrigerant, causing the coil temperature to drop below freezing and turn condensate into ice.
|
|
|
8%
CONF
|
Blower Motor Run Capacitor
The blower motor capacitor provides the necessary phase shift for the indoor fan motor to maintain rated RPM. If the capacitor's capacitance (microfarads) drifts out of tolerance, the motor will spin at a reduced speed or fail to start, resulting in inadequate heat exchange across the coil and subsequent flash-freezing of the fins.
|
|
|
6%
CONF
|
Thermostatic Expansion Valve (TXV)
The RA16 utilizes a TXV to meter refrigerant flow based on heat load. If the internal diaphragm or sensing bulb fails, the valve may 'hunt' or remain in a restricted position, causing low suction pressure. According to the Pressure-Temperature relationship, low suction pressure results in a sub-freezing saturation temperature within the evaporator.
|
DIY Repair Guide
Watch exactly how to replace the Pleated Air Filter (1-inch to 5-inch depending on cabinet).
// 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.