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Old 06-21-2015, 12:09 PM   #1
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Generator won't turn on air conditioner

We are traveling in our motorhome from California it is very hot the air conditioner on the engine is not working and I'm trying to turn on the basement air conditioning with the generator and it will not turn on help
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Old 06-21-2015, 12:13 PM   #2
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Could you provide some more info. RV brand and year, gen set type and model, basement air brand ?


Does the basement air work when you're on shore power?
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Old 06-21-2015, 12:21 PM   #3
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We are traveling in our motorhome from California it is very hot the air conditioner on the engine is not working and I'm trying to turn on the basement air conditioning with the generator and it will not turn on help

What coach and generator?

1. Are you sure there is 120 volt power coming into the coach from the generator? As a test, will the microwave run?
2. If not there is one or more breakers on the generator itself. Cycle them off & on.
3. Does your thermostat work? Can you switch the mode to A/C? There should also be a fan control. Will the fan run on high?
4. There should be a circuit breaker somewhere that controls power to the A/C. Cycle it off & on.

If the generator is making power and all circuit breakers are on and the thermostat is set correctly then the A/C should run.


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Old 06-21-2015, 12:24 PM   #4
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The basement air works fine when we are connected up to electric. It is a 2005 alpha see your gold and the generator is quiet pact 75d model 004270-2.
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Old 06-21-2015, 12:25 PM   #5
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It could be your transfer switch if al is well on shore power.

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Old 06-21-2015, 12:25 PM   #6
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Thank you I will try these. we are traveling at the moment so I cannot do much
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Old 06-21-2015, 12:27 PM   #7
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Have no idea where a transfer switch is
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Old 06-21-2015, 12:59 PM   #8
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Circuit breaker on the generator has probably tripped.

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Old 06-21-2015, 05:18 PM   #9
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As Jon said Susspect #1 is the breaker on the genrator (more to follow)
Suspect #2 someone else hit (Transfer switch)
Suspect #3,4,5,et-al is a screw loose.. Many RVers have a screw loose (Screws that hold wire connections) but I do not think you will get that far)

Actually i you chart it,, Breaker is #1.. You are around 90 when you get to the transfer switch and well over 100 at the first loose screw.

Breakers: ON my Onana the breakrs have two positions ON and Tripped/off.. That is Tripped and OFF are the SAME position.

IF you use a flashlight or if the sun is just right you can see the ON/OFF markings on the base of the toggle..

So I noticed a large flat place with no lettering on one side and made a P-Touch (Brother P-Touch) label for the OFF side. Easy to tell now which one is tripped. And they trip often.
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Old 06-22-2015, 07:56 AM   #10
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I recently had the exact same problem on my Class A. It ended up being a defective transfer switch. The location varies based on model. I had mine replaced by a repair shop with a cost of $650. Fortunately, I purchased an extended warranty when I purchased the motor home.
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Old 06-23-2015, 12:36 AM   #11
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Have no idea where a transfer switch is

It would really help if you would add the year and model of your coach in your signature. Someone here will have the same unit and will let you know where things like the Transfer Switch are.

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Old 06-23-2015, 12:29 PM   #12
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It would really help if you would add the year and model of your coach in your signature. Someone here will have the same unit and will let you know where things like the Transfer Switch are.

Dick
She posted this

(The basement air works fine when we are connected up to electric. It is a 2005 alpha see your gold and the generator is quiet pact 75d model 004270-2.)

Jon
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Old 06-23-2015, 12:58 PM   #13
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Generator won't turn on air conditioner

Don't know your exact rig. However, they don't all have automatic transfer between shore and generator. Some rigs have a manual transfer in that you must plug your shore cable into an outlet in that bay which gets its power from the generator.

And if the generator starts and runs, they often have their own breakers on the generator.


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Old 06-23-2015, 09:14 PM   #14
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As others have said, start with the generator breaker. Had the same exact problem and found that I had accidentally tripped the breaker with my hand when doing some work on the generator.
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