Flame/Overheat Sensor (D2/D4/B4)
Flame/Overheat Sensor (D2/D4/B4) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Products ship in 1-2 business days.
The overheat sensor/flame sensor monitors heater start up and temperature of the heat exchanger, this part is also referred to as the combi-sensor. Check repair manual for resistance values.
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