Coleman AC Problems

[HowieE]

What ever you end up doing do not install a Larger unit. That is a common mistake that bigger is better. A larger unit will cool quicker and thus shut down sooner. Under this condition you end up with less dehumidifcation. Dehumidifcation is the more important function in order to be confortable in any state that is known for humidity.

[vswingfield]

Hi Guys,

Originally Posted by HiHoAgRV

I tend to agree with Howie, all of the units I have messed with have the thermal shutoff at the compressor, it wont shut down the fans. Mine had a bad circuit breaker and did the unpredictable so I would swap a $5 breaker and see where it went.
Then again, I can see that your are looking for the forum to support the purchase of a new larger AC, go for it. Your old one is probably on it's last leg

Good suggestion, the first thing I did. Replaced them all while I was at it.

Originally Posted by HowieE

What ever you end up doing do not install a Larger unit. That is a common mistake that bigger is better. A larger unit will cool quicker and thus shut down sooner. Under this condition you end up with less dehumidifcation. Dehumidifcation is the more important function in order to be confortable in any state that is known for humidity.

Part of my problem is that when it is running, it’s just not getting the job done. It’s 94 degrees in here right now. Besides, the bigger units are not that much bigger anyway. My neighbor’s 34’ SOB motor home has two ACs the size of mine. You are correct about the humidity here; I drive through a cyprus swamp every day going to work.

Originally Posted by overlander63

Vaughan, it's a little late to tell you now, but the older a/c units used R22 freon.

Thanks Terry,

Not too late at all. Most of my experience has been on automotive units. I don’t even have to look up the pressures for R12 or R134. I’d have to do some research for R22.

On another note, after I washed the dirt dauber nest off the top of the compressor, I plugged the drain line. The runoff partially ran down the sides and partially through the interior skin, flooding my bed in the middle of the night. After clearing the line and replacing the cover, I now need to go the laundry.

Vaughan

[HowieE]

Originally Posted by vswingfield

Hi Guys,

Part of my problem is that when it is running, it’s just not getting the job done. It’s 94 degrees in here right now. Besides, the bigger units are not that much bigger anyway. My neighbor’s 34’ SOB motor home has two ACs the size of mine. You are correct about the humidity here; I drive through a cyprus swamp every day going to work.

As I mentioned before while you have the cover off check the temperature of the suction line. It should be cold to the touch and most likely be wet. If this is not the case the unit has lost it's charge and no judgement should be made under this condition.

[vswingfield]

Hi HowieE,

It is cold and dripping. The unit is blowing cold air, but not keeping up on hot sunny days. Strangely enough, the shutdown phenomenon has not reoccurred since my first post.

Vaughan

[HowieE]

OK If the suction line is "wet" and it can't make the grade I yeild to your idea of a larger unit.