The sensor should be clipped to the lowest circuit of the outdoor coil or the specific location indicated in the manufacturer's service manual

it protects the heat exchanger by preventing operation under restricted venting or obstructed flue conditions

Designed as an open on rise safety device

providing a critical interface between the inducer blower housing and the collector box

Swapping in a new SP11700 verifies the control side of the circuit is functioning correctly

Rheem-Ruud PD442006 Fuse Link The sensor should be clippedThe Rheem Ruud PD442006 Fuse Link is a critical thermal safety component engineered for high limit protection in residential and commercial HVAC systems, specifically within gas fired water heaters and air handler units. This OEM Rheem replacement part is calibrated with a 285F temperature rating, designed to provide a fail safe open circuit when internal temperatures exceed safe operating parameters. Featuring a durable copper construction and a