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Bird Freak

Dallas Ga.

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Posted: 08/06/19 05:18pm Link  |  Quote  |  Print  |  Notify Moderator

Ok guys, here's the problem.
I have not been able to use 5er much for 3 years since stroke and heart attack. Just a couple of winter runs when a/c was not needed. So I'm checking everything out and my a/c runs and cools fine for about 30 minutes the flips breaker. Seems to be pulling to many amps for some reason. I'm going topside tomorrow and pull cover and clean coils. What else should I look for while the cover is off.
Unit starts easy and runs cool until it flips. Car a/c systems I know well but not this thing.
Unit is a dometic 13.500


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jkwilson

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Posted: 08/06/19 05:22pm Link  |  Quote  |  Print  |  Notify Moderator

How is the voltage on the supply and what size breaker is tripping?


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Bird Freak

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Posted: 08/06/19 05:24pm Link  |  Quote  |  Print  |  Notify Moderator

jkwilson wrote:

How is the voltage on the supply and what size breaker is tripping?
have not checked voltage on supply yet. Will do that tomorrow. Breaker is a 20 amp.

opnspaces

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Posted: 08/06/19 05:38pm Link  |  Quote  |  Print  |  Notify Moderator

It would probably be good to know if the breaker is tripping, is it happening when the compressor tries to cycle on? Or is the compressor running and it just trips? If you reset the breaker to you get another 30 minutes of AC before it trips?

Check this link for some more tips, especially checking the drain holes while your up there. Link

also make sure you at least inspect all the caulking on the roof. You took the time to get up there, you might as well inspect everything.


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jkwilson

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Posted: 08/06/19 05:43pm Link  |  Quote  |  Print  |  Notify Moderator

Bird Freak wrote:

jkwilson wrote:

How is the voltage on the supply and what size breaker is tripping?
have not checked voltage on supply yet. Will do that tomorrow. Breaker is a 20 amp.


Any chance your refrigerator, converter or water heater is running as well and causing excess current draw?

* This post was edited 08/06/19 05:56pm by jkwilson *

Bird Freak

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Posted: 08/06/19 06:25pm Link  |  Quote  |  Print  |  Notify Moderator

opnspaces wrote:

It would probably be good to know if the breaker is tripping, is it happening when the compressor tries to cycle on? Or is the compressor running and it just trips? If you reset the breaker to you get another 30 minutes of AC before it trips?

Check this link for some more tips, especially checking the drain holes while your up there. Link

also make sure you at least inspect all the caulking on the roof. You took the time to get up there, you might as well inspect everything.
I think the compressor was running when it tripped and yes after breaker cools I can run about another 30 minutes.
I have already done the roof maintenance.

Bird Freak

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Posted: 08/06/19 06:27pm Link  |  Quote  |  Print  |  Notify Moderator

jkwilson wrote:

Bird Freak wrote:

jkwilson wrote:

How is the voltage on the supply and what size breaker is tripping?
have not checked voltage on supply yet. Will do that tomorrow. Breaker is a 20 amp.


Any chance your refrigerator, converter or water heater is running as well and causing excess current draw?
Nope, everything else is off. Converter may have kicked on but not the same breaker.

cougar28

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Posted: 08/06/19 06:53pm Link  |  Quote  |  Print  |  Notify Moderator

First check your voltage while the compressor is running you don't want to be any lower than 109v. If that's good check your running amps on the unit. If that's showing a higher than rated amp draw get someone to check the compressor capacitor. If the run capacitor has lost some of it's mfd value it will cause increase amp draw.If all that checks ok you may have a faulty breaker.


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ETCrockett

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Posted: 08/06/19 07:20pm Link  |  Quote  |  Print  |  Notify Moderator

I’m guessing your FW is 50 amp service and you said you were tripping a 20 amp breaker. Sounds like you are using adapters to plug into a regular household outlet in your garage. This can be a problem depending what else is drawing current in the FW or possibly in your house on the same circuit. I used to have this same issue on my TT with 30 amp service plugged into a household outlet. Especially in July and August when it is the hottest. Try running your AC in the evening after the outside temperature has cooled down. See if it runs longer than 30 minutes. If that works, you might see if you can find someone with a 50 amp box or generator where you can get 30 to 50 amps of continuous power and see if that solves your problem.


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cavie

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Posted: 08/07/19 05:25am Link  |  Quote  |  Print  |  Notify Moderator

ETCrockett wrote:

I’m guessing your FW is 50 amp service and you said you were tripping a 20 amp breaker. Sounds like you are using adapters to plug into a regular household outlet in your garage. This can be a problem depending what else is drawing current in the FW or possibly in your house on the same circuit. I used to have this same issue on my TT with 30 amp service plugged into a household outlet. Especially in July and August when it is the hottest. Try running your AC in the evening after the outside temperature has cooled down. See if it runs longer than 30 minutes. If that works, you might see if you can find someone with a 50 amp box or generator where you can get 30 to 50 amps of continuous power and see if that solves your problem.


My guess is he is tripping the 20 amp breaker in the trailer marked A/C'

Change out the breaker. It.s cheap at Lowes, HD. Could be defective.

Buy new run and start caps. Some units have 1 ea. Some have a combo.


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