Carrier 58pav 24v - http://www.hvacmechanic.com/ Forums
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Replies:
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| aircooled
|  "Re(1):Carrier 58pav 24v"
, posted Tue 23 Sep 08:49:  
I would find out which wire in the 24 volt circuit causes it to (pop) fuse.
Remove white,red from condenser first then, install another fuse.
If this fixed the problem, then coil on contactor is bad.
"People will forget what you said people will forget what you did but people will never forget how you made them feel."
[this message was edited by aircooled on Tue 23 Sep 08:49] |
| Houston204
| "Re(1):Carrier 58pav 24v" , posted Mon 22 Sep 14:58
Does it only pop with a cooling demand? You may only have a cut in the low voltage wiring to the outdoor unit.
"Tip of the Day" Remember to remove power first.
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| | kessyl
|  "Re(2):Carrier 58pav 24v"
, posted Mon 22 Sep 15:53
There seemed to be 1 little nick in the wiring outside.
I bent it to cover the nick. I turned the thermostat off, replaced the 3amp fuse, then turned the tuermostat on.
The fan comes on!!! That seems to be a major step.
But now the AC isn't going on.
That unit is the Goodman CKL42-1A.
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| | kessyl
| "Re(3):Carrier 58pav 24v" , posted Mon 22 Sep 16:46
Now it seems, that the blower will be on for a few minutes, then the fuse blows again.
Also, there were several scapes on the 24v wire coming from the AC that were inside the house, as it goes to the furnace. I taped them up.
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| | Zzz
| "Re(4):Carrier 58pav 24v" , posted Tue 23 Sep 09:49
disconnect the wires that go to the outdoor unit from the furnace and try it again, it sounds like replacement of that wire might be in order.
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| | kessyl
| "Re(5):Carrier 58pav 24v" , posted Tue 23 Sep 11:46
I'm at work, and will try that when I get home.
Would there be any reason to suspect the transformer?
It feels fairly warm, even when nothing is runing.
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| | Lou Lopasco
| "Re(4):Carrier 58pav 24v" , posted Mon 22 Sep 18:49
(to other techs)Would a high amp draw on a motor cause the low voltage fuse to pop? Or is the blower strictly 120V?
*Rookie HVAC service and installations. 3 years on the force!*
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| | learner
| "Re(5):Carrier 58pav 24v" , posted Tue 23 Sep 22:23
Hi,
With my limited knowledge, absolutely not. They're on separate circuit and 24V fuse blowing is a result of transformer gone bad in the primary winding(burnt out shorting between windings) or secondary load side drawing too much current by short circuit down stream usually or overloading situation because transformer being too small. Are you a tech? I am not.
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| | kessyl
| "Re(6):Carrier 58pav 24v" , posted Tue 23 Sep 22:39
I'm thinking it might be the 12v wire between the ac and furnace.
I disconnected it from the circuit board---the fan started and stayed on. When I re-attached it, I had the thermostat off, but ran the fan for at least 15 min.
When I tried to put it into the cool cycle, the 12v fuse popped again.
I was suspecting the transformer, but would the fan have come on and stayed on if it was?
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| | learner
| "Re(7):Carrier 58pav 24v" , posted Tue 23 Sep 23:49
Hi,
Then sounds like the wire on the terminal Y maybe shorted to ground. Y wire controls compressor(controls contactor supplying power to compressor and fan).
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