Furnace Spdt Relay Wiring Diagram


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high low voltage phase loss phase reversal faulty power incorrect sequencing and rapid short cycling the control board is fairly straight forward the coil within the relay requires up to 80ma this is more than a gpio pin can handle 20ma by default so we use npn transistor as introduction to temperature controllers a temperature controller is a device used to hold a desired temperature at a specified value the simplest ex le of a temperature controller is a mon thermostat found in homes back to sam s schematic collection table of contents range oven and furnace electronic ignition many modern gas stoves ovens furnaces and other similar appliances use an electronic ignition rather than a continuously burning pilot flame to ignite the fuel


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