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Mitsubishi PCA-A42KA Furnace Door Switch
A furnace door switch is a safety feature that blocks the vent fan and other risky devices being triggered to start in order to prevent injury and fire. It is vital that this part be traded for new one quickly if it is defective in some way or another.
Hints of a declining safety door switch
- The furnace does not begin to work whether the door is open or closed
- The furnace door switch looks like it is removed
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