Every summer we have to change the fuse within the first week or two of turning on the a/c. This year the fuses have blown three times in less than a month. The coil was cleaned last July when the pipe kept freezing up. This is not a heat pump. We have a propane furnace.
2006-06-28 12:34:57 · 9 answers · asked by melnjw 2 in Home & Garden ➔ Maintenance & Repairs
Our house is 8 years old. The system is on a circuit breaker also. It takes 2 30 amp fuses. The circuit breaker is, of course, in the basement. The fuses are outside near the compressor unit. I don't want to pay a "guy" unless I have to. They are costly. Duh!
2006-06-28 13:15:45 · update #1
It is customary to protect a circuit for a 240v a/c unit with breakers at the panel, and a fused safety disconnect switch at or near the unit. If your unit is blowing 30 amp fuses, it could be several things. 1) you are using non-time lag fuses. The correct fuse type should be a time lag fuse. These fuses are rated to handle the "inrush" or short term high current draw required for the compressor to start. non-time fuses will blow under this kind of application. 2) The fuse holders in the safety disconnect switch are dirty, corroded, or damaged from overheating. If a fuse holder gets overheated or dirty, it won't make sufficient contact with the fuse ferrules, causing them to get very hot. This often results in the fuses failing internally, and in essence 'blowing'. Make sure the contacts where the fuse goes are clean and not discolored from overheating. 3) Your a/c unit may have a problem with the compressor, such as sluggish starting, or problems with the freon path, causing high compressor loading. This will cause the fuses to blow. In that case, you will need to have your a/c unit serviced.
Hope that helps.
2006-06-29 08:08:41 · answer #1 · answered by Anonymous · 4⤊ 0⤋
Air Conditioner Fuse Blown
2016-10-30 08:47:52 · answer #2 · answered by Anonymous · 0⤊ 0⤋
i am wondering why a house that is 8 yrs old would have fuses, but the other answer is right, make sure the fuses are rated for more amps than what the a/c draws. also, make sure there is nothing else drawing current on teh same circuit-amps from something else would add to the total on the circuit. if the fuse is rated high enough, then you may want to try a time-delay fuse, which allows for a surge with out blowing. when a motor starts it takes more amps than when it is running. if that doesn't fix it, i think you have to spend the big bucks and call in a pro...
2006-06-28 14:52:26 · answer #3 · answered by forjj 5 · 0⤊ 0⤋
How many times are you going to replace the breaker before you realize it isn't a defective breaker? The A/C is pulling too many amps. There is something wrong with it, not the wiring. Contactors are pretty much universal. If the contactor points are rated at enough amps, the brand is not important. As the previous answer said, you really shouldn't trust a random friend. You need a qualified person to do this. My guess is that it is low on freon, but there are other reasons? Does it cool when it is running? Just curious, this is not a DIY job.
2016-03-16 21:27:07 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Could be a lot of things, first check to see if you have the right size fuse. The problem you are having could easily be caused by too low of amperage on the fuse. An old motor on the unit could also cause excessive power draw and blow the fuses.
BTW, why do you still have fuses? May be time to have an electrician give you a quote on putting in circuit breakers.
2006-06-28 12:42:56 · answer #5 · answered by frmme2u2me2u 2 · 0⤊ 0⤋
Simple, really. You need circuit breakers and more juice! 20/20 wiring at least. Your present electrical output cannot support the amount of electrical current your air conditioner is demanding to perform. This can be dangerous! Better have it corrected to prevent possibility of future overloading and, God forbid, fire!
2006-06-28 12:42:58 · answer #6 · answered by Chris 5 · 0⤊ 0⤋
I had this same problem, too. Reading this thread, and examine the fuse box by the unit, I found that one of the fuse holders was bent, allowing the bottom of the fuse to arch on the incoming electrical wire. Bent the fuse holder back into place, no problems since.
While this may not be what s happening to you, it s worth checking. Saved me $$$!!!
2015-06-24 04:55:40 · answer #7 · answered by G. Emersom 1 · 0⤊ 0⤋
Sounds like either there is something wrong with the AC causing it to draw too much electricity...or the AC takes more juice than your fuzes are rated for. If your A/c draws 20 amps and you have 15 amp fuzes...well ...guess what?
2006-06-28 12:44:28 · answer #8 · answered by Bear Naked 6 · 0⤊ 1⤋
What is up with all the blow-hearts pulling these crap from their back pocket as advise! WTF!!!
it is obvious that none of them have a clue about the AC or electricity! Get a life.
2015-09-07 13:41:08 · answer #9 · answered by Dave 1 · 0⤊ 0⤋
call the guy duh
2006-06-28 12:38:19 · answer #10 · answered by in_the_hood_of_ga 1 · 0⤊ 0⤋