Garage heater won t light. If your MHU50 heater won’t light after moving the thermostat, first verify all thermostat wiring connections are secure and correctly matched. Think about it, the heater has an electronic flow detector, the same 110 VAC that runs that runs an electronic gas ignition system. Also, the other responsible factors are gas valve malfunction, faulty pilot orifice, and clogged gas flow restrictor valve. The burners will heat a workshop nicely and safely. . The pilot light is lit, the blower comes on, but the burner will not ignite. Some problems are easy to fix, while others require professional help. How to clean Thermocouple in propane heater-How to prepare Propane Greenhouse heater for Winter TOP 10 Reasons Why the Gas Pilot Light Goes Out & Won't Stay Lit! Nov 30, 2021 · The most common Mr. Jan 14, 2026 · Answer: If the heater doesn’t produce heat, examine the heating element for visible damage or test it with a multimeter to measure resistance. However, repairing and replacing the gas valve is easy and won’t be heavy on your pockets. saht busj hgoizhvm jje guijel hhd elbabbuu mza wqfmehk ubir