Question about Coleman Mach III Air Conditioner
My unit is not actually a Mach3 it ust made me use that to post my question,I'm not sure of my model,I'll describe things as best as I can, I have a 1995 coleman combination a/c-heat pump unit outside.Ok what's been happening is..I cought the outside unit still running when the inside blower had shut off,I tried to shut it off by turning the a/c control to off,but it kept running,I had to kill the power to it to shut it off.When I turned the power back on,it stayed off.The next day it ran normal,I looked each time the inside blower stopped and the outside unit was shutting off too.It was ok for lie 3 days,now today It started not wanting to shut off outside again,so I had to kill the power 3 different times.Now I got home,turned it on and the inside blower cam eon,but now the outside unit won't start.I tried flipping the breaker but it didn't help.All the other stuff in my house that runs off that beaker works fine,it couldn't be the breaker could it?I thought maybe the points were sticking and that's why it kept running maybe,but can bad points keep it from starting too?I thought maybe the thermostat but you can put it as low as like 50 and it doesn't matter it still won't start the outside unt now.Does anyone know what this could be?I need some help please,I''d appreciate it greatly. Thank You
Well you have it great job! on the out door unit when it will not shut off disconnect the yellow wire on the stat wires coming from inside if unit stops stat bad if not contactor "points' if they look pitted or buzz change them #1 reason for compressor failure high amp draw thru bad contactor hope this helps aboout 15.00 at hvac store seperate wires with zip ties so dont get mixed up if only one set of points then 30amp single pole 24vac coil contactor
Posted on Jun 04, 2009
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Posted on Jan 02, 2017
SOURCE: fan wobbles on coleman MACH3
What is the model number of your current air conditioner? You will usually have to remove the upper shroud, evaporator housing and condenser housing to get all of this out. With that removed, the fan motor should have three or four studs holding it to the plate. Remove the screws from the plate and the whole assembly will lift out.
Posted on Jun 30, 2009
unfortunaletly the hartd start is a "last resort" and you will probably need to replace the compressor/unit... (however I have had luck physically jarring the compressor during the instant I applied power to the compressor.. sounds silly, but I have had it work more than once..) hope this helps
Posted on Aug 15, 2009
Yes, but you need to know which wires do not need to be hooked up...
Here is a tip about trouble shooting your air conditioner...
Air Conditioner Trouble -Review the Possibilities
Posted on Jul 19, 2010
SOURCE: how do i acess the
Either with a ladder and shop vac and long extensions and soft brush attachment from inside with flashlight for better view, or remove plastic cover on roof and then remove metal cover over evaporator by removing the short philips screws that hold it on.
Posted on Oct 09, 2011
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