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Open Roads Forum  >  Tech Issues

 > Air conditioner stopped working

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Ranger Smith

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Posted: 06/18/22 04:40am Link  |  Quote  |  Print  |  Notify Moderator

That black capacitor you have will replace the big one with the yellow wire on it. According to the parts list it is a 40 uf capacitor and your 47 to 56 will certainly work.
11. All 1499-5721 Run Capacitor (40 Mfd/370V)
12. All 1499-5461 Fan Capacitor (7.5 Mfd/370V


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EMD360

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Posted: 06/23/22 04:51pm Link  |  Quote  |  Print  |  Notify Moderator

I waited for the OEM run capacitor that came today. I installed it and a new fan capacitor. Now both work on low but not on high. Can’t find anything to explain that. Could the fan motor be broken?


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Ranger Smith

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Posted: 06/23/22 05:08pm Link  |  Quote  |  Print  |  Notify Moderator

That sounds like a thermostat issue.

EMD360

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Posted: 06/23/22 07:50pm Link  |  Quote  |  Print  |  Notify Moderator

Maybe. I checked that the thermostat wiring was secure but I probably need to put power directly to the hi fan wire.

EMD360

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Posted: 06/24/22 09:16pm Link  |  Quote  |  Print  |  Notify Moderator

It’s the high fan wire. It’s shorted out. I tested the thermostat and got a spark on the green wire. Took off the thermostat completely and got the same spark between the hot and hi fan. All the other functions work; low fan, compressor, and heat. Apparently auto hi and auto lo do nothing. I’m not sure why they cycle through. So sounds like I need to find the short! That does not seem like it’s going to be easy. On the other hand I could just tape it off. The air works fine on low cool. I found the only difference between the lo cool and hi cool is the fan speed. I hope I didn’t fry the thermostat when the green wire sparked!
[image]

EMD360

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Posted: 06/28/22 12:05pm Link  |  Quote  |  Print  |  Notify Moderator

I could not figure out why the high wire doesn’t operate. There is no speed selector switch to test. The wires are plugged into the control board.
[image]
Unfortunately I think I blew the electronic compressor circuit on the expensive Bluetooth thermostat because when I hooked it back up the compressor would not stay on. I re-installed the original thermostat and it’s working. I didn’t hook up the hi fan since it sparks on application of power.
So it could be the wire or the control board I guess.
The impeller turns freely as does the fan blade but I noticed the impeller has a chip in it wher part of a fin is broken off. That seems weird.
[image]

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