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Coleman Mach III Air Conditioner - Page 7 Questions & Answers
Roof top a/c not cooling.
Ends of that wire(s) should have a probe on one end, and connector on the other. Plug connector in to control box where it matches, then stick the other end in to coils about 3" up from bottom of coils/fins. You may have to push and wiggle a bit but allow it to slide in between the fins, and insert until most or all of probe is inserted. You may even see old location if you look close with flashlight, and just re-insert it there. That senses frost at bottom of evaporator and will shut down compressor to allow unit to defrost if it freezes up for any reason. The end opposite the connector may also have a round disc like sensor that has a clip on back to snap on to evaporator tubing , usually in lower left corner, again look for old location.
That really shouldn't stop it from cooling in your case. Do you hear compressor kick in, and are you getting any cooling at all? Do you have model number off bottom of roof unit? What type of thermostat are you using?
Coleman mach 8333a871 - I
You can check with a multimeter that has a micro Farad checker you can read on the cap what the mF is and what the range will be plus or minus a certain percent. You can change it just remember how you took the wires off. example 80mf cap plus or minus 10 percent would be72-80 would be good cap.
A/C thermostat working, squirrel cage fan assembly
It may just be your compressor start capacitor that needs replacing. If not experienced working with capacitors, I must warn you to handle with insulated pliers at the very least as they can give a ZAP of 300 + volts even when disconnected from power. Give me your model number but don't take unit off the roof yet, it may be fixable right where it is. Be sure to shut breaker etc off before removing cover on roof.
My coleman rv ac unit
It is possible that the drain hole on condensate pan is plugged and causing water to over flow pan. Remove cover from unit and check drain line.Clean coils andpan as best you can and clear drain hole. Add a small amount of bleach to water in drain pan.This will kill any algea or bacteria that may be growing in condensate water and plugging the drain. Thank you
I have a Coleman Mach
Tried to connect with costumer, did not connect after 8 minutes hung up and posted this in the solutions for them to read. Will attempt another connection later.
I have a coleman mach
Have you tried thourghly cleaning the unit? Sometimes over a period of time these can buildup deposits inside affecting its function.
I replaced the seal under my coleman rooftop AC
I suspect that something has shifted and is causing you trouble. If you can give me the model number off the base of roof unit, and tell me whether it's mechanical controls at ceiling or thermostat on wall would certainly help to describe proper procedure for troubleshooting. Don't give up yet, may be quite simple. First of all shut all power off to unit and go up on roof and remove the 4 screws and lift cover off. Take a look for any damage especially at top of compressor where wiring is going in. Remove the 2 nuts at top of compressor holding cap on over connections and take a look for loose or broken wires or connectors under there. If not experienced with any of this, use a pair of insulated needle nose pliers to be safe, to wiggle wires etc., otherwise please ask someone experienced with electrical.
Then if that's looking good, follow wires from compressor back to cover on side which is usually held on by a screw and remove it. You should see (if right model) some round and oval capacitors. Check to make sure none of them have shifted around and wires are touching each other or any metal around them. If you find any loose or off terminals, use pliers only and keep hands on insulated part of pliers to replace it. Let me know what you find. REMEMBER!! If your not experienced in this area, don't touch it and wait for someone who is. Capacitors store lots of voltage, even when power is off, and can be very dangerous.!!!
Coleman rooftop air conditioner - Unit's fan
It could very well be the capacitor which I would check first because it is a cheap fix. If the capacitor looks pregnant or swollen it could be shorted. You can check it with an ohm meter if you have one. Disconnect the capacitor, writing down where the wires go. Set the ohm meter on the highest ohm setting, and touch the leads to both sides of the capacitor. If the needle goes up and then bleeds back down, the capacitor is good. If the need goes up and stays up, the cap is shorted. If it doesn't move at all, the cap is open. Either shorted or open, it needs to be changed.
Worst case could be that the compressor is "locking up" or the piston is swollen and will not pump but for a few seconds before is seizes. This would mean a bad compressor. Hope this helps.
My 8000 series unit stopped
Yes I'm sure it is. If you want to , you can just get the tech you hire to charge it to just braze up the line. It doesn't take long to do this. The system will need to be evacuated to pull the air back out of the system. Hope this helps, have a good day.
The ac trips the breaker in the camper when the
Check that incoming voltage is up to specs at AC unit control box ( 110-120VAC ), and if good, I'd suspect start capacitor for compressor is defective and needs replacing provided compressor is good. Usually a new capacitor is required in most cases. Please don't try changing it yourself if not experienced in that area, as capacitors can give a very high voltage shock, even with power off.. Don't forget to turn breaker off to power source before working on it.
What should the temp be coming out of the unit?
This can vary a great deal due to temperature,humidity,how clean the coils are kept and if the unit has the proper refridgerant charge.
As a general rule of thumb I have always tried to get about 20-22 degrees spread between the supply and return air.I consider about 55 to be a good temp to try for. Thank you.
Bought a used coleman 15,000 btu with heat
You'll need the ceiling assembly and control box to operate it properly, or at the very least a ceiling assembly with mechanical controls. The ceiling assembly is where you will run your 110 volt, and depending on what set-up you choose, the wiring etc, relays and transformers will be determined by that. I assume you didn't get the ceiling assembly with it? Here's a link to wiring diagrams etc and service manuals to help you understand what and where to go with it. Model number should be on it, just go to proper info pertaining to your model.
http://www.rvcomfort.com/rvp/tech_info/manuals.php
Do I ever need to recharge my coleman mach 3
Hi, and the answer is no. This system is a sealed hermetic a/c unit, and does not require you to charge the unit, only if it develops a leak in a coil, copper line, or a line has rubbed through causing it to leak. If it is cooling good, your freon level should be fine. It doesn't hurt to go on top in the summer or before it gets hot, remove the cover and take your garden hose and kill power. Now, wash the coil out real good. They get very dirty and cause the pressures in the system to get real high and the unit will not cool like it should. This is about all you can do, but its very important. Keeping the indoor filter foam clean is also good, but no you don't need to charge it on a regular basis, only if you have a leak in the unit. Please don't forget to rate me as I know you will be kind. Please let me know if you have any problems with your unit, and I will be happy to help you out.
Sincerely,
Shastalaker7
A/C, Heating,
Air conditioner blowing warm air
A few basic principles for air conditioner troubleshooting. For both central home air conditioner or window air conditioner,
the first thing to check is whether the unit is getting proper power.
If the unit uses 220 volt power be sure that the proper voltage is
getting to the unit. Same for 110 volt units. A voltage meter can be
used to assure that the voltage is correct.For window air conditioning units the voltage can also be checked before and after the thermostat.
If voltage is being supplied to the thermostat but not from it then the
thermostat probably needs replaced. This is a fairly common problem.
Another place to check is the fan motor voltage. The fan on window air conditioners runs both the indoor blower and the condenser fan. If that motor fails than the compressor
may run for a short time, but will overheat and shut off. Continued
operation like this will result in compressor failure. This motor can be
economically replaced for larger window air conditioners, but for
smaller ones the cost of replacement will be more than a new unit.Central air conditioners
for the home are more complex and there are more things that can go
wrong. As with the window air conditioner the thermostat can also be a
problem. The central air conditioner thermostat will only have 24 volts going to it. So don't look for high voltage there. Some units the voltage will be coming from the outdoor unit and others the voltage will be supplied by the indoor air handler or furnace. Most home central air conditioning will be supplied by the indoor air handler or the furnace. If the air conditioner is for cooling only the unit will usually have only two wires going to the condenser unit. Make sure that you have 24 volts across those wires.The
next thing to check will be the indoor blower. If your thermostat is
calling for cooling then the indoor blower should be running. If there
is no air moving across the indoor cooling coil then you will soon have a big block of ice formed on the coil.
This can happen for a few reasons. The indoor blower is not working,
the air flow is restricted and not allowing air to move across the coil.
A clogged air filter would also do this. Or the outdoor condenser unit has lost the charge of refrigerant.Finally and worst of all is when you have a complete compressor failure. Often when this happens the compressor will "lock up" or not be able to turn when power is supplied to it. Overheating or lack of lubrication are usually the main causes of compressor failure. Overheating can be caused by the outdoor coil around the compressor getting clogged with dirt, leaves, or grass. Loss of the refrigerant charge will also cause the compressor to overheat. It is the cool return gas coming back to the compressor that helps to keep it from overheating.As
you can see there are many things that can go wrong with an air
conditioner and I have not come close to exhausting the possibilities
here. I have just touched on the most common problems in a very basic
way.
There are some basic trouble shooting things that can be done very easily. Most
problems are above out of the range of comfort for many homeowners and
professional help should be consulted before any attempt is made at
repairs. Remember also, that the release of refrigerant gases into the atmosphere is a federal offense in the US. Proper care must always be taken to minimize the release of any gases. A license is also required to handle refrigerants. Make sure that the professional you call has the proper certifications to handle refrigerants properly.
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