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Friedrich VHA09K Furnace Door Switch
A furnace door switch is a safety feature that blocks the vent fan and ignition sequence from starting so as to avoid injuries. It is crucial to have this part exchanged for a new one quickly if you see that it is broken.
Simple signals your safety switch on the furnace door will not last the year
- The system cannot run whether the door is open or closed
- The safety door switch appears as though it has been breaking off
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