Pilot light goes out intermittently. No wind or external influance. Suspect thermocouple. Any ideas?
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the thermocouple generates a millivolt voltage that is applied to the pilot valve inside the main valve. there is a tiny electro magnet that holds the pilot valve spool open when it's energized. if you ever saw a hot water heater where you have to hold a button "down" for three minutes, this is a case where the thermocouple needs to heat up and generate a voltage for the pilot valve.
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Has anyone had an occurrence of a Laser 730 or 731 over firing?
The top of the heat chamber and the heat exchanger glow red on high when this occurs....
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