Tjernlund Products 950-1031 Fan Prover 323269-701 Complete Integration: Includes necessary harness

Complete Integration: Includes necessary harness adapters and diagnostic stickers to convert older wiring configurations to the current standard

ensures reliable

Common signs include hissing sounds at the actuator

The most common causes are high static pressure from restricted ductwork or dirty filters

Tjernlund Products 950-1031 Fan Prover 323269-701 Complete Integration: Includes necessary harnessThe Tjernlund Products 950 1031 Fan Prover is a critical safety component designed for side wall power venters. This pressure switch kit serves as a fundamental interlock, ensuring that the ventilation system has established sufficient airflow before the burner is allowed to fire. By monitoring the static pressure differential, the 950 1031 prevents the operation of high efficiency heating appliances under hazardous "no flow" conditions, protecting