Question about Bryant 462AJC021BA Air Conditioner

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5 amp fuse in central Airconditioning unit keeps blowing, I keep replacing, somtime is good for long time and sometime for really less than a day

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You have an intermitent short in your low voltage wires. You need to trace the wire all the way to the A/H and then to the condensing unit. I bet you will find a bare spot. Check where the wire goes through the brick to the condensing unit. Ground squirrels are bad about chewing though the insulation. if this is where the short is, replace the wire from the A/H to condensing unit.

Posted on Nov 17, 2009

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2004 jeep grand cherokee laredo keeps blowing the fuse for the parking lights and taillights


If it "keeps" lowing the fuse, there can be only one reason for it...you "keep" replacing the fuse without diagnosing the circuits to find out WHY the fuse is blowing in the first place.
When a fuse blows, there is a reason for it. If you do not find the reason and correct it, the fuse will continue to blow.

Please also review this article: Where's The Fuse?

With all of that said, the first thing I would check is all of the light bulbs. Sometimes the bulbs get really hot and melt inside and it causes the metal contacts in the bulbs to touch each other and short the circuit out. This is especially true if you can replace the fuse and everything seems to work ok for a while. They will all work until the offending bulb gets hot and "POOF" there goes the fuse again.

This condition can be hard to diagnose since the short circuit usually goes away as soon as the bulb cools off for a few seconds. In cases like this, what I usually recommend to save time and money is to replace all of the bulbs.

If it is fuse #6 (15 Amp) in the Central Junction Block that keeps blowing, it only powers the tail lamps, licence plate lamps, front park lamps and the front side marker lamps. The cost of replacing all of these bulbs is a LOT cheaper than an hour of diagnostic time at most shops. If this does not fix the problem, then you will have to trace all of the wires going to all of these bulbs to find out which one is shorting and where it is shorting. This could turn out to be very time-consuming and expensive, but at least, you will have eliminated the likelyhood that it is caused by a bulb.

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Have you replaced the blower resistor . some times they can cause the fuse to blow . You may need a muiltmeter to test the current draw on the blower motor circuit. the draw should be less then half of the rated fuse .( 20 amp fues draw is less then 10 amps) You did not say but does the blower work on high only or the lower speeds with out blowing the fuse ? if it does work on low or high with out blowing the fuse i would replace the blower resistor

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There is a short in one of the thermostat wires. The fuse is triggered on the low voltage side of the unit. Replace the wires.

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My car stopped running without any warning, its a 2005 ford focus, 2.0 and the 20 amp fuse for the engine management keeps blowing, it's number 9 in the panel and I have replaced it twice, both times it blew again, any tips? Also the odometer reads ------ and that's it.

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I have a 2000 Hyundai Accent that keeps blowing the ECU 1 Fuse. I can change it one time and it will last for three weeks then before you know it I can change it 5 times in one day. What does the ECU 1...


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One unit runs a while, powers down, other unit blows transformer


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FUSE KEEPS BLOWIN (STARTER, IGNITION, & FUEL # 8 FUSE)


you need a new starter I just went through this problem had my starter changed and have not blown any fuses in days....oh and by the way getting to the starter was not and easy task.

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1 Answer

Thermostat


Several things cause fuses to go. But you ace in the hole is that it works for sometime before it goes out. This suggests that a relay or contactor is not pulling in as it should. I would try replacing the fan relay (if so equipped) and definitely the compressor contactor. If either of these try to pull in and are off center internally the result can be blown fuses intermittently.

DO NOT GO ABOVE 5 amp fuse or you may burn out the transformer.
The other things that can cause a blown fuse intermittently where your describing (although less likely unless subject to rodents and or high or low voltage spikes)
1 a temporary short in the control wiring (wire to or from the thermostat).
2 A short intermittent on the control board (if so equipped)
3 A relay on the control board or the SS circuitry is not operating with in design parameters.

I would really like to know what you discover the problem is.

If this helped you understand your system or problem please rate me as high as you can and thank you for using fix ya. Good Luck.

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1 Answer

32'' Panasonic TV, 4 yrs old, keeps blowing the fuse


Hi Mendi.
I had a similar problem, in that I could not find the proper fuse for my set. I bought a bit higher amp fuse from Radio Shack and it ended up blowing a couple months later. I've since pulled the TV down and replaced it with an LCD set, so I've solved my problem.

But, to address yours, I don't think the amp difference would not be the problem. Likely, there is a power issue on your set causing it to draw more amps and become out of specification. Using a higher amp fuse would buy you more 'capacity', but if its blowing those too (repeatedly), its likely a real problem in the set. I'm not a TV technician, so I can't tell you why. I'd suggest taking the thing in for service (cheaper than the house call) or if that is too expensive, looking at putting your money into a set that won't give you those problems. Or, just keep replacing the fuse until it doesn't fix the problem.

Sorry I cant help much more.

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