Resideo 137980A Test Button Assembly R-448A Precision-balanced to reduce vibration and

Precision-balanced to reduce vibration and bearing wear on the condenser motor

It retains all original mounting points and terminal layouts for a direct swap

What is the pressure setting for this control

technicians should verify the specific ZD series model number where the motor is always side-mounted on the second dimension listed

Precision Construction: Features a 1/2-inch aluminum body for superior thermal dissipation and environmental resistance

Resideo 137980A Test Button Assembly R-448A Precision-balanced to reduce vibration andThe Resideo 137980A Test Button Assembly is a critical field service component designed for diagnosing and maintaining Honeywell electronic air cleaners. This OEM replacement part allows technicians to verify high voltage power supply operation by manually triggering a momentary arc to the ground, confirming that the collector cells and power box are functional. Engineered for a direct fit, it mounts securely into the access door, ensuring consistent