If your manometer confirms the inducer is pulling sufficient vacuum but the 20197314 switch fails to close

Direct Fit Installation: Reduces labor time on the job site by matching original manufacturer mounting patterns

What causes a Copeland protector to trip frequently

While universal relays may match the amperage

Tjernlund Products UC1 Interlock Controller 340793-762 If your manometer confirms theThe Tjernlund UC1 Universal Interlock Control is an essential component for technicians managing draft inducer and power venter installations. This interlock controller acts as the central logic board, coordinating the sequence of operation between the HVAC appliance and the venting system. Designed for 24VAC, 115VAC, or dry contact call for heat signals, the UC1 features a pre purge and post purge cycle to ensure proper combustion gas evacuation.