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I have a coleman mach 9000 roof top AC in a truck camper 2008 model,I turn on the thermostat on the wall (atwood) the fan funs for about a minute or two and when the compressor starts to kick in it shuts down, trips the breaker at the power source be it shore power or generator

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I am afraid your compressor has gone to the hills. Replace

Posted on Jul 02, 2009

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I had a similar problem with my 2001 Coleman Niagara. The crank mechanism needs to travel inwards and outwards depending on if you're going up or down. Some WD40 and then RV/Lithium spray on grease freed mine up, and it started ratcheting once again. There may be a cover plate to pull off to get better access to the spot needing lubrication, but it's non obvious until you watch it pop in 1/4 inch just as you start going up.

Posted on Aug 23, 2009

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Posted on Jan 02, 2017

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1 Answer

Coleman Mach 48000 series roof top A/C in my camper & recently it's been dripping heavily inside the camper. We looked at the top & inside for a clogged line & can't find anything, suggestions?


I had the same problem but it wasn't a clogged drain line, it was the gasket between the roof of the camper and the AC unit. The gasket had shrunk and pulled apart allowing rain water in. To make sure you don't have a clogged drain line when using the AC do you notice water dripping off the camper anywhere besides inside? You should have some drips somewhere on the outside.

Jul 18, 2017 | RVs

1 Answer

Where is the drain?


There are grooves on both sides of ac unit on a camper and it drains down the roof to a little gutter that travels the water towards end of camper and drains. Most of the time down the side of camper, but if these Grove are stopped up it will not allow it to drain and cause it to overflow inside camper. If filter is very stopped up or evaporator coil is stopped up, fan not running, low on refrigerant, or having the thermostat set way to low can cause it to freeze up and when this water thaws out it is too much for the drain to handle and also ice could be sticking being the drain pan melting causing it to go in your camper. I would check filter and those drain grooves first.

Sep 17, 2012 | Coleman Mach 15 Air Conditioner

1 Answer

I have a coleman roof top a/c with no wall thermostat. can i put one on it? not sure which model i have. are thre some models which a thermostat cannot be installed on?


Yes, you can put a thermostat. Doesn't it have a cold/hot selector? The fan may still run when you turn it to warmer, but it limits how much the compressor kicks on and off. You will need to go to an electrical supply and tell them what you are doing, and whether or not they recommend you use a relay or wire into the one already in the unit.

Jul 11, 2010 | Coleman Mach 15 Air Conditioner

2 Answers

Coleman roof top a/c, is the heat controlled by thermostat


hi
on the new colman units (trane) the heat is control only from the t-stat.
i will reccomand a programble t-stat for the new unit.

thanks

Nov 02, 2009 | Coleman Mach III Air Conditioner

1 Answer

COLEMAN MACH 3 MOUNTING ON INSIDE OF CAMPER NOT ALIGNING WITH MY


Did you purchase a new Ducted Ceiling Unit with the Upper Unit air conditioner? If you are replacing an older mach 3, the ducted ceiling packs are not compatible and you will need to purchase the ceiling pack as well. The ducted ceiling pack part number for the 8333 series Mach III AC is below.

1. Heat/Cool Air Distribution Box - 8330B735
2. Cool only ADB - 8330A733
3. Wall Thermostat (if needed) - 7330G3351

Hope this helps.

Jul 01, 2009 | Coleman Heating & Cooling

1 Answer

I have a 13,500 btu coleman on our 1989 avion camper. It was making a very loud noise for some time, and vibrating then the motor locked up on it. My husband thinks the blower went out on it. It was...


You should be able to turn the fan motor freely by hand. If there is any resistance or the noise turning it by hand, then the fan motor is definitely bad. Is it a wall thermostat unit or manual controls? Wall thermostat, you can use a jumper wire from the 12+ terminal of the thermostat to the HG terminal and the fan should come on, if not, then the motor is bad.

Jun 24, 2009 | Coleman Mach III Air Conditioner

1 Answer

We have a 2000 Coleman Cheyenne pop up with a Coleman mach roof unit. We turned it on today at home and the fan blows but the heater doesn't heat up and the air conditioner doesn't cool. Someone said if...


The distance of the cord is a big deal, 10AWG Cord would be best for this situation. If you have a 50ft cord, make sure that the cord is not wound up on top itself as this can cause a drop in voltage and a spike in amperage. Is the compressor trying to come on at all? If not, then you may have a problem with the selector switch or the thermostat. If the compressor is humming for a few seconds and then stopping and then trying to come on again, it could be a problem with voltage loss. Anything below 98.5 plus or minus 10% is too low the for the compressor to kick on.


Jun 06, 2009 | Coleman Mach 15 Air Conditioner

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