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| Home Repair (alt.home.repair) For all homeowners and DIYers with many experienced tradesmen. Solve your toughest home fix-it problems. |
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How does a thermocouple have enough power to operate a gas valve?
On older boilers (furnaces if you're American), when the heating isn't actually running (eg. the thermostat says the house is warm enough), there's no power to the boiler, so how does the pilot light valve stay open with the tiny voltage (40mV?) and current from the thermocouple?
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