It blows because the red wire in your thermostat is touching ground. You could have a short outside at you a/c unit where an animal has chewed into it or a weed eater has damaged it: That is usually where I find them. Of course you could have a bad board, but that is unusual. Don't use a different fuse, or you will have a bad board.
2006-09-28 13:29:47
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answer #1
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answered by DallasGuy 3
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I'm guessing that it's because the circuit is drawing more than three amps. If the fuse is blowing, you may assume that is a Bad Thing and you need to have it looked at by a professional.
2006-09-28 13:03:18
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answer #2
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answered by F. Frederick Skitty 7
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Unless you have a millivolt meter, you'll have to call a pro for this one. The most likely culprits are a short in the 24v wiring (as stated in an earlier answer), a bad transformer, or a bad gas valve. Basically, your serviceman will have to unhook the usual suspects and reconnect one at a time until he (or she!) finds which is spiking the meter.
2006-09-29 17:29:34
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answer #3
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answered by Jody W 2
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no way to answer without looking at it or knowing what is happening or you explaining better. i dont even know what you are trying to explain. call an electrician if its outside the furnace or a heating and air (HVAC in the US) guy if it is inside the funace or after the fused switch. if you are talking about a fused switch call the electrician.
2006-09-28 13:02:11
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answer #4
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answered by Anonymous
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get a slow blow fuse and try that. It may solve your problem
2006-09-28 13:29:39
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answer #5
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answered by aussie 6
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