Carrier 9200 Weathermaker 3 amp fuse


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Old 11-06-10, 06:31 AM
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Carrier 9200 Weathermaker 3 amp fuse

My carrier weathermaker keeps blowing the 3 amp fuse inside the bottom door of the furnace. It had been blowing last year but only 2 or 3 times all winter. This year it only stays on for one or sometimes not even a full heating cycle. I visually inspected for bad spots in the wiring but found none. it flashes an error code 24 after the fuse blows. Anyone have any ideas on where to start looking, or how to look? I'm far from an hvac tech, but i would really like to avoid the trip charge from a repair man for something i could do myself.
 
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Old 11-06-10, 11:35 AM
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The most common problem is a thermostat wire cut by sharp sheet metal. That grounds the thermostat wire and will blow the fuse. Check that carefully for it's length.
 
 

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