Robertshaw 720-079 Gas Valve Els PW 17895 or a faulty reversing valve

or a faulty reversing valve solenoid drawing excessive amperage can damage the onboard relays

Inspect the blades for heavy debris buildup or stress cracks that compromise structural integrity

the board should be replaced

Is this sensor compatible with 3-wire configurations

this heat sequencer relay ensures the heating elements reach operational temperature before the blower engages

Robertshaw 720-079 Gas Valve Els PW 17895 or a faulty reversing valveThe Robertshaw 720 079 Gas Valve is a universal intermittent pilot ignition (IPER) valve designed for high demand residential heating applications. This 7200IPER model features a 1 2 inch x 3 4 inch NPT configuration with side outlet capability, making it a drop in replacement for a wide range of OEM central heating units, boilers, and wall heaters. With a compact 3 9 16 inch swing radius, this 24V gas valve is engineered for tight manifold spaces,