I have 2 Maytag window units that we have recently begun running 24/7 since our central air went out (we are in the South so going without AC in July is not an option). Our house is a two-story "shoebox" - only 1200 sq ft. so this temporary fix has worked well enough to keep the spouse (a/k/a "the hot one") cool and yet not cause me to wear winter clothes in the house.
The unit in our bedroom has begun making a loud "cracking" noise - think the sound of hail hitting the outside portion of the unit. It's frequent enough and sporadic enough to keep this light sleeper awake and posting on this message board at 4 AM.
I have noticed that while it's cooling, it's not cooling as well as it was, say, a month or so ago.
Can you please help me? My sanity depends on it - I need to sleep!
Thank you in advance for any advice you're willing to give!
Its refrigerant gas has leaked out so ice is forming on the evaporator which breaks and causes this cracking sound. The same is resulting in less cooling as well. Get the refrigerant gas pressure checked and fixed.
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Running the equipment on 72 degrees would cause the compressor and fan to work harder on hot days. This will definitely place more strain on your capacitor. These capacitor problems usually happen on the hottest days. I would suspect the capacitor, not the fan. I'm an HVAC tech, so I would Check both with my multimeter
There is ice forming on the evaporator coils. This is either from a low freon charge or a leak in the seals or windows and doors. Could also be that the drains are not working and water is building up and freezing
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.
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.
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.
This may be a couple of things. 1- The belt may be bad or twisted or frayed and ready to break! Or, 2-The drum may be out of alignment and not be roling smothly over the roller glides that it should be spinning on! I am not there to give hands on diagnoses. But I can give you a good service that is nation wide! A&E Factory service . They answer 24/7 to make appointments! And have a reasonable service charge of $75 around our area
Remember though, if the unit is 10 years old or more it may not be advisable to put good money into bad! New appliances are much more efficient and pay for them selves in only a few years!
Bless You,ngfam1 Please give me a good rating in our fiya.com sight before you sign off! ngafm1
My guess is that water is accumulating in the tray or line, and not draining properly. To fix it, you will need to tip the tray so that no water accumulates. Also, check if the line is draining. Good luck.
I recommend that if you have animal and you want to have the unit on all day that is fine if you have an ac unit with a thermostat and it is big enough to handle. The unit that is in the window is ok if your home but it could cost alot if there is no thermostat because it will run and run and run. Then if it don't cool the house enough means its not the right size. The unit / compressor could overload and kick on and off and might not work when you get home and the house will be like a firecracker.
Best bet would be to replace it with a unit for the size needed for the apartment. It would be effecient.
if we can help further just let us know.
It happened that to me last year. After 2 weeks of cracking sound symptoms, my monitor begun to blackout - no video signal but the indicator light is still available. I checked it inside using my tester, one of its transistor was burned-out. I tried to replace it and its working up to now.
Possible cause of this is probably overuse of monitor without proper ventilation causing electronic components to overheat. Try to bring it to an authorized TV repair man in your local area for proper diagnosis - Don't try to fix it yourself. He's the right expert to that.