Question about Dometic Rooftop RV Air Conditioner
My trtailer has both front and rear a/c units. they were both turned on but was only hooked up to a 30 amp service. Now when a/c is turned on you hear a excessive load on the generator. Sometimes trips breaker, sometimes runs fine. help?????
Did you checked if they are hooked up in a parallel connection ...not in serial ...cause in this way they will over run the generator...
Posted on Jul 25, 2009
You mentioned that this was a 50amp circuit breaker, why is a 30 amp breaker installed instead of a 50 amp breaker?
The 30amp breaker is tripping because the startup load exceeds 30amps. Put back a 50amp circuit breaker and your problems should go away unless you have an electrical fault.
Posted on Jul 23, 2009
I guess the A/C startup stresses the generator a bit to much. First of all check the oil pressure of your generator. Second step: your generator model has a start button with a red light in the center that will flash if something is wrong with the unit. Onans have a self-diagnostic capability and when something goes wrong, the control board shuts the generator off and that little red square light in the start button will flash a trouble code similar to the way earlier cars did (the dashboard computer light will flash a trouble code like "32" or "25"). The way to tell the code number is to count the number of flashes after the gen stops running: for example, code 32 will be three flashes one after the other, a short pause with no flashing light, and then another two flashes indicating the number two. The Onan service manual has descriptions of these codes.
Posted on Jul 23, 2009
When they ran from a 30 amp service they ran okay, right? I mean they didn't trip the breaker on the service right? This seems fine, if you overloaded the circuit feeding the trailer, it would have tripped.
Now you say that it seems that they load the gen down quite a bit? They didn't do this before you ran from the 30 amp service? It might be a coincidence. What I need to know is the BTU rating of both AC units and the gen KW rating to see if you are in fact, overloading it.
Posted on Jul 20, 2009
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Posted on Jan 02, 2017
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