Question about Coleman Heating & Cooling
We have an old Coleman split system HVAC in our trailer. The heater & fan work fine, without odors or problems. But our AC is very weak & after it runs for 10-15 mins, a pungent smell is produced, comparable to brussel sprouts or rotten eggs. We have brand new ducts, as of 6 mos ago. We replaced the filter & cleaned the coils, but the smell still persists. There is no condensation, if that means anything? We are going to go to Home Depot to get some coil cleaner stuff today. We live in Phoenix & we need our AC already! Our trailer heats up fast, our thermostat reads 90 by 2-3pm! Any tips?
Clean well all the small drainage with bleaching liquid and soap it with scented soap.also at the back of the unit that are having small drainage and through the drain hose
Posted on Apr 23, 2014
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Posted on Jan 02, 2017
Most refrigerant leaks can be repaired. However, if the leak is between the aluminium fin plates, I would have to agree that it should be replaced. They are correct that you cannot after fifteen years find either an indoor or an outdoor unit seperately and the whole unit would need replacing.
Posted on Aug 11, 2009
Check each screw on your compressor to ground (compressor case). Should be very high resistance Then check the resistance across your teminals on the compressor to be sure it is not shorted. Then check the wiring to your capacitor (The big one). I ran across this just last week. The mechanic didnt have the capicator wired correctly. If it is brand new it will have a wiring schematic somewhere on it.
Dont leave the compressor on very long, but turn it on long enough to get a voltage reading across the terminals. I assume it should be 240 volts. If you have check all of this, they make a jump start gadget to start a stuck compressor. They sell it just about everywhere. Let me know how this comes out..
Posted on Sep 30, 2008
First of all, clean your outside coils so that you are assured of good cooling air. The compressors have an overtemp device that is usually internal to protect them against heat. If you have an air compressor use it to blow out the coils good. If the compressor will start, the capacitor is good so it sounds like a cooling problem with the compressor
Posted on Jun 25, 2009
There couild be a small blockage in the refrigerant piping. This obstruction could be cyling through the system and causing the pressures to increase and decrease which is overheating the compressor. Normally when the compressor is overheating there is not enough refrigerant getting returned to the compressore to keep it cool while running. When it shuts down the the refrigerant equalizes which can return the blockage back to the coil or just simply dislodge it frome where it is hung up. When the compressor returns to its running temp, it turns back on and can cycle that blockage through the refrigerant piping which sometimes it may go thru and sometimes gets hung up and clog the system again. I would have a certified technician come over and hook their manifold to the system which can easily tell them if there is a blockage or he can trace the problem. Do you know what type of metering device is in the coil inside?
Posted on Jun 06, 2010
Testimonial: "Thanks Terry I did refrigeration for over ten years but got out of it 15 years ago...It took a while for my brain cells to click.I didn't think about the blockage which still may be a possibility. My pressures were a little low for my ambient temp so I added some freon now I have a good sweat back to the compressor and it has been working good for the last 3 hrs...the temps outside are supposed to hit the hi 90's and I will keep an eye on my head pressure.it is a split system and I'm getting some sweating at my txv..that is were the restriction usually happens.I used to get a lot of cap tube restrictions in small systems.thanks for the help."
SOURCE: Our mitsubishi split system heat
Usually if you get a musty smell, the unit is short cycling. This means the compressor is coming on, then turning off for a couple minutes, then coming back on. The best way to tell if this is the issue is to turn the unit way down stand outside and see if the compressor is turning on and off. If it's staying on, let me know and we will go from there.
Posted on Sep 28, 2010
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