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International Comfort Products PH5548AKA1 Furnace Door Switch
The job of the furnace door switch stops initial fan and ignitor from switching on in order to prevent injury and fire. It is extremely important that the device is exchanged for a new one ASAP if it is damaged so as to prevent something bad happening.
Red flags of an inadequate furnace door switch
- The HVAC system does not function whether the door is open or closed
- The safety door switch seems broken badly
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