or a cracked heat exchanger causing improper drafting

ensuring correct shaft height and mounting bolt alignment

Precise Timing: Microprocessor control delivers consistent 15s pre-purge and 10s TFI intervals for optimized fuel delivery and safety

This means the internal plug moves upward to the seat to shut off flow

What is the maximum air pressure

Heil Quaker ICP 1183545 Housing 320788-702 or a cracked heat exchangerThe Heil Quaker ICP 1183545 Housing is a critical OEM replacement kit inducer housing designed for residential and commercial gas furnaces. This assembly is engineered to maintain high efficiency airflow by housing the draft inducer motor, ensuring that combustion gases are safely and effectively exhausted from the heat exchanger. As a technician, you know that a cracked or degraded furnace inducer housing can lead to pressure switch trips and venting