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352

Oxfofd, Fl

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Posted: 02/10/18 01:52pm Link  |  Quote  |  Print  |  Notify Moderator

Newly purchased used pop up. AC runs great for about 5 minutes then the breaker flips. 122 volts coming in. Standard OEM cord. Nothing else running. Original AC unit on a 2002. AC cools great for 5 minutes. One split breaker, 15 amp to AC and 20 amp to the rest. 20 amp receptacle service. Breaker feels warm. Bad breaker???? What an I missing? Thanks


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Mandalay Parr

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Posted: 02/10/18 02:09pm Link  |  Quote  |  Print  |  Notify Moderator

Suggest you find an electrical person to help troubleshoot.
Might check and tighten all screws on breakers etc.


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BB_TX

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Posted: 02/10/18 02:10pm Link  |  Quote  |  Print  |  Notify Moderator

I would go for a simple fix first. Could simply be a loose wire connection at the breaker causing heating. My A/C breaker started tripping like that a number of years ago. Replaced the breaker and no more tripping. And it was a 15/20 like yours but the 20 was feeding my 15K A/C.

enblethen

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Posted: 02/10/18 03:04pm Link  |  Quote  |  Print  |  Notify Moderator

Could be loose connection, more apt to be a bad capacitor in A/C.
Open A/C control area(roof top) and look for the capacitors. About 4 inches or so by 1 inch. There should be two one for motor and one for compressor. Look for bulging of the capacitor. This could indicate it/them are shorted.
Inspect wiring for burnt areas.


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time2roll

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Posted: 02/10/18 04:01pm Link  |  Quote  |  Print  |  Notify Moderator

Usually air is on a 20 amp breaker. If the wire is #12 I would increase the breaker size.
Otherwise high amp draw is a primary sign the compressor motor is shot and you need to replace the unit.


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nineoaks2004

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Posted: 02/10/18 07:55pm Link  |  Quote  |  Print  |  Notify Moderator

Sounds like the AC might be running hot and going out on overload. Check the breaker for the AC, breakers do get weak as they age or a wire loose, if not then check some of the other ideas in previous answers, I always check from the power to the unit that does not work. also if you are using an extension cord it might not be heavy enough to carry the AC which will then overheat and go out on overload, when checking for voltage drop or amps the unit being tested should be running. Good Luck and Happy Camping


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enblethen

Moses Lake, WA

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Posted: 02/10/18 08:10pm Link  |  Quote  |  Print  |  Notify Moderator

Verify the size of your A/C unit. It may not be a standard full size unit as in conventional trailers and MHs. Smaller A/C units may only require 15 amp breaker.

jerryjay11

Dover

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Posted: 02/15/18 01:18pm Link  |  Quote  |  Print  |  Notify Moderator

You need to troubleshoot with a clamp-on multimeter. This guessing and could be's will cost you $$. You must first find out what amperage the unit is pulling while running. It's either going to be over 15 amps or under. Common sense where to go from there.

slider45

GA

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Posted: 02/22/18 11:47pm Link  |  Quote  |  Print  |  Notify Moderator

A buddy had almost the same issue due to faulty breaker unit.

352

Oxfofd, Fl

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Posted: 02/23/18 05:48pm Link  |  Quote  |  Print  |  Notify Moderator

slider45 wrote:

A buddy had almost the same issue due to faulty breaker unit.



Problem was a faulty cord

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