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International Comfort Products PGAD47D1K5 Furnace Door Switch
A furnace door switch is a switch that prevents the vent fan and ignitor being triggered to start so as to stop a potential explosion. It is extremely important that the device is substituted for a new part as soon as you can if you suspect that it is not working.
Some warnings of an inadequate safety switch on the furnace door
- The safety door switch is broken badly
- The HVAC system will not fire up whether the door is open or closed
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