Johnson Controls Y65T31-0 Transformer or a failing blower motor

or a failing blower motor before replacing the limit control

While typically used to set a high-end limit to prevent over-pressurization

This 1/2" sweat connection zone valve is engineered for high-performance fluid control

Using this spring in smaller regulator bodies will cause improper seating and potential over-pressure conditions

Johnson Controls Y65T31-0 Transformer or a failing blower motorProfessional grade Johnson Controls Y65T31 0 Transformer is a critical component for technicians managing multifaceted HVACR control systems. As a 40VA Class 2 control transformer, this unit is engineered to step down multi tap primary voltages of 120V, 208V, or 240V to a reliable 24V secondary output. The split bobbin design ensures superior primary to secondary isolation, minimizing the risk of noise interference in sensitive digital controllers and