![]() ![]() ![]() Correct any issues prior to resetting the thermal switch. If there are signs of high temperature, inspect your installation for any problems with venting, combustion air supply and for a flammable vapor event (see "Pilot Light Troubleshooting Flow Chart" section). If the thermal switch opens:Ĭheck the flame-arrestor for signs of high temperature (blue or black discoloration). This unit is also equipped with a thermal switch, designed to shut off the gas supply in the event the water heater has been exposed to flammable vapors (e.g., spilled gasoline), poor combustion caused by a blocked vent or insufficient combustion air. ![]() See Maintenance of your Water Heater Section.Ī thermocouple is used to determine if a pilot flame is present, and will shut off the gas supply to the main burner and the pilot if the flame is absent. Excessive build up of dust on the base ring filter or flame arrestor.The water temperature exceeds 195☏ (91☌).The pilot flame is extinguished for any reason.This water heater is designed to automatically shut-off in the event of the following: Here are a few things to consider, from a Reliance water heater Installation Instructions and Use & Care Guide. ![]()
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