20 Most Recent Coleman Mach 15 Air Conditioner - Page 8 Questions & Answers

It may have a low charge. A/C units have a safety that's called a low pressure control. When the unit runs the compressor will **** down the gas pressure and cause it to shut off. After time the system will balance out and the pressure on the low side will go back up. This will cause the compressor to come back on. The other thing that comes to mind is the compressor motor might be shutting off on overload and turning back on after it cools.These are first things I would look at. Always make sure your air filter is clean.

Hi, if you are energizing the contacts on the contactor, and the compressor runs, the thermostat is faulty. This is what energizes the contactor coil that you have. You need to check to see if you have voltage to the coil on the contactor. You need to replace the stat asap.
Sincerely,
Shastalaker7

try this link.

http://www.rvcomfort.com/rvp/tech_info/installation.php

3 things could be the cause,
1 low on freon,
2blockage in the metering device
3 blockage in the air flow
The only one of the above that can be checked without special tool is the blockage in air flow. Check the coils on the inside of the unit to make sure they are clean and dirt free. Now do the same to the outer coil. If the coils look in good shape then you will need to contact an a/c tech for checks on the first two problems.

Dave

Hello,
The green light is normally flashing and steady flash... if it is flashing quickly a number of times and then hesitates it may be flashing a code for the problem.
To me if your just having problems cooling then you most likely have a problem with the reversing valve. The problem could be mechanical where the valve is "stuck" in the heating position or it could be electrical where the valve is not being told electrically to switch to the cooling position. If it is an electrical problem, it could be a problem with the thermostat or it could be a problem in the condenser.
Trouble shooting this will take someone experianced in diagnosing heatpumps and it would be very hard to do from my chair with out getting my hands physically on your unit. Give me a meter with me at your unit and I could tell you in a few minutes what is happening...

Heatman101

When you switch from fan only, to cool, do you hear any difference in sound of the AC unit, with temperature down and calling for cool? (like a deep moaning or similar) As far as recharging goes, they are a closed system, so if low on freon, must have a leak.

Air flows from the inside through the air filter and into the AC unit. The evaporator coil "cools" the air and the blower pushes the air back into the area to be cooled.

Hope this helps and good luck! :-)

COLEMAN R.V. PRODUCTS
GO TO rvcomfort.com
Click on RVP (RV PRODUCTS)
Click on type of AC, if you can’t find the information you want there,
then click on contact us on the Green Bar.
You can get Service Support or Email address and Phone numbers.

Try calling a local appliance repair or HVAC/refrigeration contractor.

A mechanical refrigeration contractor would have a better chance of having or being able to get replacement parts faster. But you have to get someone with an HVAC knowledge to look at it.

While the R.V. mechanics may be good at simple repairs or general knowledge, you need a trained eye to look at this issue here.


I would suggest to have a tech diagnose the problem and quote to repair. If the quote sounds reasonable, then go for it (your paying for expertise and a warranty). If not, then you at least have an idea of where the problem lies and what steps needs to take place to try to get it fixed.

Can ou say, low batteries!

Is this a code for us to come over cause electric furnaces dont use a pilot light ha! Ha! (they uses electric heat strips for heat .....but if you want to give away money..........)

What you have is either a bad capacitor for the fan or a bad fan motor. I would suspect the capictor firtsly then the fan motor. Capacitor is round or oval has 2 to 4 prongs on it and the brown wires from the fan motor connect to it. Good luck on repairs

Dave

There is a bolt on each corner that tighten from the inside. You will see them when you remove the inside cover. There should be foam weather stripping around the opening that the unit sits on and then it's tightened up.

sounds like you have a bad transformer , if this unit is ran by a t-stat then take the wires of the stat and twist red,yell.,green together if unit comes on your t-stat is bad if not your transformer is bad cost to fix apprx. 60.00 to 100.00 depending on where you take it if you fix your self transformer probly 30.00 tstat about same,hope this helps

Your AC's drain port could be on the opposite corner from where the water is building up. Your vehicle absolutely has to be level, this pertains to the refridgerator also. Good luck, my friend, Dana

Does it continue to stay running as in compressor stay on all time when asking for cool, or does compressor cut out?

Check here: http://www.rvcomfort.com/rvp/rvp.php

it sounds like the unit is low on charge or a bad blower motor turn the ac off and turn just the fan on does it blow out any air?
check your filters to make sure they are clean
if these are both ok i would call someone certified to check refrigerant levels

on the rear toward the lower side of unit,tip the unit so the rear of unit is 1/2 inch lower than inside of unit,and make sure drain isnt plugged with debris

It should, but what have you got for plug ins on generator? 30 amp, or 15? I believe the rough estimate is 100 watts , equals roughly 1 amp.