the unit off and keep the blower going, tech's where we got the unit from are no help, they've been out a couple of times already and can't find anything wrong, unit freezes over during the day, during the night, we've checked the filter, we've had it cleaned to make sure that there is no blockage, the freon level is where it needs to be, we live in Kansas, and its in the 90's during the day and upper 70's at night, we need this unit fixed.
2007-07-17 12:05:39 · 8 answers · asked by dog lover 1 in Home & Garden ➔ Maintenance & Repairs
Use a different company for repairs if you don't feel you're getting good service from you present company. Don't try to fix this unit yourself since you could void any warranty you still have.
2007-07-18 03:20:24 · answer #1 · answered by dee 5 · 0⤊ 0⤋
The indoor coil and the outdoor coil probably don't match up would be my guess. Or the coils aren't sized properly to meet the heat load, possibly there's an air flow problem.
If you have access to the model numbers on both coils make sure there's a common number i.e. 24, 30, 36, 42, 48. Usually something that's a multiple of 6 but it depends on the manufacturer. Based on what you mentioned about the company that installed it I wouldn't be surprised if they grabbed the wrong size of one coil or the other.
Make sure the blades of the blower wheel are clean especially if the furnace was existing before the A/C was installed.
Don't close any more vents than you have to. Folks seem to think that closing vents downstairs will make more air go upstairs. Unless you have a variable speed blower motor on your furnace all it will do is restrict air flow causing the A/C to freeze. Try and keep as many vents open as possible and keep furniture from blocking returns.
If you have a humidifier make sure it's OFF and water has stopped flowing. If there's a lever that opens and closes a damper make sure it's closed.
Don't set the thermostat lower than 72. If you have a programmable thermostat try and keep each setting within a couple degrees of each other. Anything greater than 4 or 5 degrees will cause the system to run too long trying catch up and possibly freeze, most likely on the hotter days when the heat load is highest. Best bet is to find one temp and leave it there.
One other thing is dirty freon. To keep things simple, once the system is installed a vacuum should be pulled to ensure that no outside air remains. If the system isn't sucked dry, under normal operating pressures the air will turn into water, and when mixed with freon causes all sorts of goofy things to happen. Not to mention creating acid that will destroy the system. You'd be surprised at how often this is the case.
Freezing up is a slippery slope, once it starts it's only going to get worse. Shut everything down, blower included or you'll burn it up, and wait for the ice to melt. If nothing I suggested works out try calling another reputable company to pinpoint the problem. They'll charge a diagnostics fee, but at least you'll have a second opinion and the repairs should still be covered under warranty by the original company. If you got quotes from numerous companies before picking the cheapest, consider it a lesson learned : )
2007-07-19 16:15:35 · answer #2 · answered by John L 1 · 0⤊ 0⤋
It sounds like you have checked the usual things like dirty filter and coils. Has the unit always done this or is this a new problem? If it has always done it, it might be an oversized unit or the blower might be set at too low of a speed.
If this is something that has just started something is causing the evaporator coil to be starved of refrigerant. It could be a plugged cap tube, bad expansion valve, or plugged orifice.
Since the tech who installed the system is incompetent you need to find somebody who is. These problems really are not that hard to troubleshoot.
Hopefully it is still under warranty because these are not cheap repairs. If it is still under warranty get it fixed before the warranty runs out. That may be why the installer is blowing you off.
2007-07-17 13:24:48 · answer #3 · answered by mike b 5 · 1⤊ 1⤋
Luckily you don’t live in Arizona where it’s 110 degrees today! Well, it’s tough to say, but I’ve had that happen to me a few times down here and it’s usually because my filter’s dirty, but you say that’s not the case. It could be that your coils are dirty, I know you think it can’t be since it’s so new, but if you run your a/c without your filter for a day or two it can make them dirty as sin. You should go up there yourself and check the coils; you can clean them yourself by picking up some stuff at the local home improvement store. The other reason could be is that your running it too hard…what do you keep it at? The last thing to do is see if you have some kind of warranty that lets you return the product for being defective. Oh, also look at your thermostat and make sure it’s not broken…you might have it set on 78 degrees, but it could malfunction and run at 60 degrees causing it to freeze up also.
2007-07-17 12:39:23 · answer #4 · answered by CJ 2 · 0⤊ 1⤋
How low are you setting the thermostat? Set point lower than 64 will ice up a unit. Try to set the target temperature around 72 to 76,* depending on your comfort level.
Is it hotter inside the house than outside? A/Cs have difficulty when the evaporator is hotter than the condenser. A variable speed outdoor fan will help this.
Is the indoor fan running at the highest speed? Low air volume will cause evaporator icing.
Is it extremely humid inside the house? If over 70%, consider getting a dehumidifier to supplement the A/C.
2007-07-17 13:54:10 · answer #5 · answered by OrakTheBold 7 · 0⤊ 0⤋
OK. You have an air-flow problem, low charge or bad metering device. That is the bottom line. Dont listen to anything about the stat being set too low, or anything else. MAKE SURE yourself that the filter is clean. CHECK YOURSELF to see if the coil is dirty. As far as the metering device go's, you need a trained tech to check that. Same go's for the charge. Make sure you dont have anything blocking the return ducts bringing air back to the indoor unit. Good Luck!!!
2007-07-17 14:29:41 · answer #6 · answered by konfadence21 1 · 1⤊ 1⤋
ours did that keep the setting on a lower number than the last number it helps say its on 9 the air cond. wont cut off to defrost so it freezes up and keep it on med not high that helps
we keep our settings on 6 try that see what happens
2007-07-17 14:24:21 · answer #7 · answered by ? 1 · 0⤊ 0⤋
is the unit sized properly for the house? is the return air duct sized properly? are all the supply registers opened up?
2007-07-17 12:35:51 · answer #8 · answered by ? 3 · 0⤊ 1⤋