Installing a new defrost sensor often resolves this

As a direct replacement for 5H73034

The Maxitrol 325-9-1 1/2-12A49 is an industrial-grade

Is the 5H0705800001 compatible with older Modine 5H70580-1 units

Reliable performance under heavy load conditions

Laars Heating Systems RS2112801 Burner Door 321702-401 Installing a new defrost sensorThe Laars RS2112801 Burner Door with Gasket is a critical OEM replacement component designed to maintain the integrity of the combustion chamber in Laars NeoTherm (NTH) Boilers. Engineered for high efficiency hydronic heating systems, this assembly ensures an airtight seal between the burner and the heat exchanger. This model is specifically compatible with a wide range of NeoTherm units, including the NTH 150, NTH 210, NTH 285, NTH 399, NTH 500, and