IO Hvac Controls iO-WWR240 Relay 328140-751 verify the 24V coil resistance

verify the 24V coil resistance and pressure differential before replacement to ensure the Trane heat pump not cooling or heating symptom is not due to a failed solenoid or charge imbalance

this replacement expansion valve power head ensures seamless HVACR valve maintenance by allowing the power element to be swapped without removing the entire valve body from the line

compensating for refrigerant pressure drop

Can I use the P77560 to replace a 27099 switch

Look for the model number on your blower assembly housing

IO Hvac Controls iO-WWR240 Relay 328140-751 verify the 24V coil resistanceFor service technicians and commercial contractors tasking themselves with safeguarding outdoor equipment, the iO WWR240 voltage monitoring relay is a critical component for real time system protection. This 240V SPDT relay is specifically engineered to mount within the condensing unit's service compartment, providing a primary interface for the Warning Watchdog alarm system. By connecting directly to the line side of the compressor contactor, this