Air Conditioner Works on shore power not the Gemerator

[krinderhagen]

The Air Conditioner


Well both the air conditioners work when plugged into the shore power, however neither of the Air conditioners work on generator power. there is a amp sensor on the top breaker for the front AC i believe it senses the amount amps available telling the computer whether or not to come on ???

Air conditioner starting: One 13500 Btu air
conditioner with 3000 W base load or two 11000 Btu air
conditioners with 1500 W base load at 100° F (38° C) at
500 ft (152.4 m) elevation
RV generator set Quiet Gasoline TM Series RV QG 5500

[gkime]

the relay switch is bad
had the same problem

[joecook]

I think your problem is very complex and complicated. I would suggest you to take help of an expert professional like heating union county nj team as they are very experienced in air conditioner repairing and they will surely help you out.

[krinderhagen]

Dale.Traveling wrote:
Something else to check is the fuel line from the chassis gas tank to the generator. If the line is or has rubber tubing there is the possibility of a potential leak if the tubing is getting old. It won't drip gasoline since the fuel pump is at the generator pulling gas from the tank but will suck air and limit how much fuel the generator is getting. A big enough leak and you won't get any gas.

A quick check to confirm would be to run the generator off a gas can on the ground next to the generator. The fuel pump can draw from a can as long as height difference isn't too great.

Thank You

I have noticed there is a plastic like liner inside the rubber hose it is fragile at the ends when inserting the nipples for the fuel pump and carburetor

Thank you i will inspect

[Dale_Traveling]

Something else to check is the fuel line from the chassis gas tank to the generator. If the line is or has rubber tubing there is the possibility of a potential leak if the tubing is getting old. It won't drip gasoline since the fuel pump is at the generator pulling gas from the tank but will suck air and limit how much fuel the generator is getting. A big enough leak and you won't get any gas.

A quick check to confirm would be to run the generator off a gas can on the ground next to the generator. The fuel pump can draw from a can as long as height difference isn't too great.

[krinderhagen]

I have cam e across a post stating that if the generator receives too much voltage to the exciter it will run hot and cause the the fuel pump circuit to fail

I have gathered from the problem that the Gen set is not operating the Air Conditioners that there is a problem in the generator and that i should test the stater and winding's
I have found this manual
Located at

HGJAB 5.5 Service Manual
http://www.cumminsonan.com/www/pdf/manuals/983-0501D.pdf

My question and concern is which wire is which




The Control Panel i am working is the 300 5337 in this chart it shows P1-1 which i measured battery voltage

[krinderhagen]

JimM68 wrote:
I haven't read the history (other related threads), but the only relation between the genny and the shore power is the transfer switch.
If everything is 100% OK on shore power, then your genny isn't doing what it should, or your transfer switch is screwed up.

As I din't read any of your other threads, is your rig 30 or 50 amp?
What kind of power management system does it have?
Exactly what genny?

I am going to say 30 amp as the power switch is only 30 amp

[Davidlatham2012]

crazy question, are both 25amp breakers on the generator turned on?

[krinderhagen]

JimM68 wrote:
I haven't read the history (other related threads), but the only relation between the genny and the shore power is the transfer switch.
If everything is 100% OK on shore power, then your genny isn't doing what it should, or your transfer switch is screwed up.

As I din't read any of your other threads, is your rig 30 or 50 amp?
What kind of power management system does it have?
Exactly what genny?

It is a Onan Marques Gold 5.5HGJAB=901A 120V 45.8 Amps


It has a New Carburetor new computer and a new fuel pump. the generator is running the microwave works.

I am working on getting an AC amp tester as think the air conditioner control panel is not reading enough amps from the sensor

[krinderhagen]

krinderhagen wrote:

1995brave wrote:
Listening to the video, here is a question. Have you replaced the gas cap on the RV recently? Weather you have or have not, remove the gas cap and run the generator again, let us know if it runs longer or not.

ok i will be right back with the results of that

Thank you

i am finding that the fuel pump quit working all together a new one is on the way

[krinderhagen]

1995brave wrote:
Listening to the video, here is a question. Have you replaced the gas cap on the RV recently? Weather you have or have not, remove the gas cap and run the generator again, let us know if it runs longer or not.

ok i will be right back with the results of that

Thank you

[1995brave]

Listening to the video, here is a question. Have you replaced the gas cap on the RV recently? Weather you have or have not, remove the gas cap and run the generator again, let us know if it runs longer or not.

[krinderhagen]

JimM68 wrote:
I haven't read the history (other related threads), but the only relation between the genny and the shore power is the transfer switch.
If everything is 100% OK on shore power, then your genny isn't doing what it should, or your transfer switch is screwed up.

As I din't read any of your other threads, is your rig 30 or 50 amp?
What kind of power management system does it have?
Exactly what genny?

It is a Onan Marques Gold 5.5HGJAB=901A 120V 45.8 Amps


It has a New Carburetor new computer a new fuel pump is on the way


Here is a Video of operation

Generator Operation

[JimM68]

I haven't read the history (other related threads), but the only relation between the genny and the shore power is the transfer switch.
If everything is 100% OK on shore power, then your genny isn't doing what it should, or your transfer switch is screwed up.

As I din't read any of your other threads, is your rig 30 or 50 amp?
What kind of power management system does it have?
Exactly what genny?

[Dale_Traveling]

At this point reading the history I would drop the generator and take it in for repair. At 270 pounds that might be easier said than done but you'll save some of the labor cost. If you have access to a transmission jack removing it isn't very hard. Any small engine repair place should be able to work on it. It might even be a Briggs and Stratton engine that was rebadged by Cummins. Take it to a true expert with small engines which might not be your local RV service center.

Until you can get the generator operating reliably further effort with the AC's isn't going to be very productive.