Copeland Comfort Control (White Rodgers) 90-113 Relay/Trans To test the "close" function

To test the "close" function

you know that a failed contactor is often the bottleneck in air conditioning and heat pump systems

the 626619 is the current authorized furnace replacement part for the older 626472 and 626472R series

or gas pressure issues causing flames to migrate toward the vestibule

Copeland Comfort Control (White Rodgers) 90-113 Relay/Trans To test the "close" functionThe Copeland Comfort Control (White Rodgers) 90 113 Fan Relay Transformer is a heavy duty HVAC control center designed to manage line voltage fans and pump motors in both forced air and hydronic systems. This component integrates a 120V to 24V Class II transformer with an SPDT relay, allowing high voltage equipment to be safely switched by a 24V thermostat signal. Built for field service efficiency, it mounts directly to a 4 x 4 inch junction box and