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Carrier 45-4SI Furnace Door Switch
The job of the furnace door switch blocks the draft inducer and ignition sequence from turning on in order to prevent injury and fire. It is quite important to have it swapped out as soon as you can if it is damaged so as to prevent something bad happening.
Clues of a weakening safety switch on the furnace door
- The whole system does not turn on whether the door is open or closed
- The safety door switch has been bent
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Before buying or purchasing any Carrier 45-4SI part, do your due diligence and cross-check the model number and also make a visual inspection so that you are positive that the correct furnace door switch is being ordered. Safety is always important when installing or replacing an HVAC part. If you are in doubt about anything call a pro. Don't be sorry. Be safe.
Feel free to download your manual for help.
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