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RHEEM RA14 Starts Then Shuts Off

CONF DIAGNOSIS ACTION
93%
CONF
Dual Run Capacitor
The dual run capacitor provides the phase-shifted current necessary for the compressor and fan motor to maintain rotational torque. When the internal dielectric fluid degrades, the compressor fails to stay in sync with the magnetic field, leading to an immediate 'locked rotor' state and the tripping of the internal thermal overload protector. Replacing this restores the necessary electrical phase angle for continuous motor operation.
SKU: 43-25133-22
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4%
CONF
Definite Purpose Contactor
The contactor utilizes an electromagnetic coil to bridge high-voltage contacts; over time, these contacts suffer from silver-cadmium pitting and carbonization. This creates high electrical resistance and arcing, which can cause the voltage to drop below the threshold required to keep the compressor solenoid engaged. The resulting 'chatter' or voltage sag causes the system to shut down shortly after the initial startup sequence.
SKU: 42-25101-01
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3%
CONF
High Pressure Switch
This is a safety limit-switch designed to open the control circuit if the discharge pressure exceeds a specific threshold (typically 450+ PSI). If the condenser fan fails to ramp up or if there is a thermal restriction in the refrigerant line, the pressure spikes instantly upon compressor startup. The switch triggers an immediate shutdown to prevent the mechanical destruction of the compressor scroll plates.
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DIY Repair Guide

Watch exactly how to replace the Dual Run Capacitor.

// 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.

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