millivolt thermostats

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  1. M

    Main burner won't light anymore. Before was intermittent and fixed by shaking surround. Thermopile: low volts when switch on, good volts off.

    Hello, I have a natural gas fireplace called the Heat-N-Glo FB-GRANDLP, which is a millivolt system. (I can't find its manual but I found a similar model's (I think) FB-IN and FB-GRAND). It has two control options, a simple on/off switch located on the decorative painted metal surround and a...
  2. M

    Thermopile not producing enough voltage

    I have a gas fireplace (Fireplace Xtrordinair 36 DV XL) with a millivolt system. It's around 20 years old. I'm using a millivolt compatible digital thermostat (White-Rodgers 1E78-140), but often there is not enough voltage (~459 mV) from the thermopile to operate the thermostat - it does not...
  3. J

    Napoleon 45I Thermostat questions

    Hi, I have read a lot of forums on here about thermostats, but not one that has necessarily addressed my insert a 2011 Napoleon 45I. I started with the whole converter/relay system which did not work, and realized that the mother board has it's own converter. So then I scrapped that and bought a...