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Friedrich VHA24K Furnace Door Switch
A furnace door switch is a safety feature that inhibits the vent fan and ignitor from starting in order to prevent injury and fire. It is extremely important that the device is substituted for a new part promptly if it is not working in order to prevent injuries.
Elements of a weak furnace door switch
- The safety door switch appears as though it has been eroded
- The HVAC system does not turn on even when you close the door
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