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Oil furnace transformer wiring.
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The transformer steps up your 120 volt house voltage to several thousand volts to produce a spark across the terminals of an igniter.
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Heating service technicians use a special high voltage tester to check the transformer.
November 11 2013 an oil furnace works by having a high voltage ignitor create a spark next to an oil nozzle.
The furnace transformer is comprised of two systems that make up the furnace transformer wiring.
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When the transformer stops working properly it can lead to problems with your furnace such as the igniter failing to start and the furnace overheating.
Although your oil furnace burns fossil fuel it still needs electricity to light the flame.
Oil furnace ignition repair and transformer replacement low voltage transformers can be found on the zone valves or on the thermostat of your furnace.
For example if the red wire is connected to w on the thermostat the furnace should turn on.
The nozzle compresses air and oil transporting it to the spark where it is ignited to create heat.
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Oil furnace ignitor troubleshooting posted on.
The ignition transformer has two black wires the motor has a black and a white wire the honeywell ignitior has an orange wire a red wire and a white wire.
The input 115v power source has a red wire a black wire and a white wire.
The first system is for the supply voltage and the other is for the secondary voltage.
Furnace thermostat wiring diagram terminal letters on a thermostat and what they control the hot wire 24 volts usually red from the transformer is the main power wire to turn on or off a furnace components.
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When the red wire is disconnected from w the.