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5 answers

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 · answer #1 · answered by DallasGuy 3 · 0 0

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 · answer #2 · answered by F. Frederick Skitty 7 · 0 1

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 · answer #3 · answered by Jody W 2 · 0 0

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 · answer #4 · answered by Anonymous · 0 1

get a slow blow fuse and try that. It may solve your problem

2006-09-28 13:29:39 · answer #5 · answered by aussie 6 · 0 1

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