Reznor 269838 Kit 30067439-890 leading to a "humming" stalled

leading to a "humming" stalled motor

while red confirms the unit is closed

we see these gaskets fail most often due to soot buildup in the heat exchanger fins

complemented by a screened orifice and inlet deflector

Reznor 269838 Kit 30067439-890 leading to a "humming" stalledThe Reznor 269838 LP conversion kit is the essential field service component for transitioning Reznor UDAP gas fired unit heaters from natural gas to liquid propane. Specifically engineered for UDAP 150 and UDAP 175 models, this kit ensures the manifold pressure and orifice sizing align with propanes higher BTU density. As the Reznor 201730 replacement, this kit provides the precise HVAC gas valve conversion components required to maintain the units