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Old 05-04-2014, 09:25 PM   #1
2 Rivet Member
2006 34' Classic
Okc , Oklahoma
Join Date: Oct 2012
Posts: 21
trouble shoot Dometic A/C code E7

Please help. " it's already hot in Oklahoma"
I am experiencing frequent A/C turning off due to breaker kicking it off. I turn off all breakers and flip them back on then restart A/C.
The unit restarts and starts blowing cold air for 30 minutes.
I turned the water heater and fridg to propane and have no other major devices running ie blow dryer, microwave, RV.
It's really important tome to have A/C in Oklahoma with > 100F.
2006 34' airstream with single dometic unit.
What are steps to trouble shoot?
How do I word search for a thread to find information on a topic?
I know many of my questions have been asked. I need to find a way to access them.
Thank u for time

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Old 05-04-2014, 09:39 PM   #2
Rivet Master
1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 4,591
Buy an inexpensive digital volt meter and measure the voltage you are experiencing in the rig with the AC on, on a hot day. Harbor Freight, Wal Mart, Sears all have them for less than $15. With the load on, you should not have a voltage of much less than 110 volts. Down in the 105 volt range you start to have problems with both the AC itself and the load on the breakers (voltage goes down, current goes up).

You should check the temperature of the plug from the trailer where it goes into the panel at the campground. If it is hot, you have a high resistance and probably need a new plug end to your cord. Also the campground outlet itself may be loose and causing a problem.

You also can check for breakers which are warm or hot. If any are, especially the AC breaker, it may have either a loose wire connection or the breaker itself may have just become old and tired. I had a similar problem on one of my RV's and found the wire to the breaker had actually melted the insulation near the breaker, due to a loose connection.

If you are not comfortable with electrical issues and repairs, I urge you to have a professional look at it.

idroba is offline   Reply With Quote
Old 05-06-2014, 06:06 AM   #3
2 Rivet Member
2006 34' Classic
Okc , Oklahoma
Join Date: Oct 2012
Posts: 21
I will do as suggested and purchase a voltage meter. I am concerned about why it keeps kicking .
Want to take family on vacation this summer to table rock lake.
Thank you !!!
Sooners67 is offline   Reply With Quote

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