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International Comfort Products T8MPN150J20A1 Furnace Door Switch
The furnace door switch stops the fan and ignition sequence from starting so as to stop a potential explosion. It is important to get the part traded for new one immediately if you can, especially if you suspect it is not working properly.
Simple indications of a defective safety switch on the furnace door
- The whole system will not begin with the door closed
- The switch appears as though it has been breaking off
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