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Gasman64
As if things weren't lousy enough, my only source of AC isn't working right-it keeps icing up.  I have an older model Panasonic that has served me well for a number of years; did fine last summer.  I hadn't cleaned the coils in awhile, so this year before I used it, I sprayed some Simple Green into the outside coils, then rinsed the coils well with a hose.
The inside filter is permanent, a fine plastic mesh screen that needs cleaning every other week or so, depending on use.  You know it's getting dirty when the unit ices up. 
Well, lately in this upper 80s to low 90s heat, it's been icing up often; I've had the unit long enough I know just where to set it, as I realize I'm not going to make my little place like a refrigerator, but mid-70s is nice.  Yet, I set the "cool" as low as possible, and it still ices up, and it's still in the 80s inside.  Been using this about 7 or 8 years, know it well, but ???
-I re-cleaned the filter today.
-I tried changing the angle of the unit in the window.
-I made sure the condensation is draining.

This is really driving me nuts; need some relief from the heat (am in it my entire shift at work!)
Steve
ICCC #1012

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Tgarner01
Don't know a lot about household AC, but on automotive refrigeration units a freeze up usually indicates a condensation drainage problem or low on freon... Hope you get it fixed easily.
Toby Garner
ICCC #1939
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brucesheehe
Plenty of new ones at WalMart
Bruce Sheehe
ICCC #889 - Connoisseur of Time, Friends, Leisure, & Coleman   Altoona, PA - The Mountain City - Near The Eastern USA Continental Divide
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Gasman64
Any intelligent replies, from knowledgeable people?
If it was a weekday, I'd just go out and buy a new one.  Not in the market for the first cheapest Chinese POS I can find.
Steve
ICCC #1012

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arizonacamper
Are you running it on high blower speed or low. If on low it will  tend to freeze up. always run it on high. You might want to vacuum out the evaporator coils. If dirty it will cause freezing. And check the condensaintion drain on it. on a lot of household window units you need to drill a small hole in the lowest spot so that it will drain more of the water out. they do tend to hang on to about 1/4 to 3/8 of an inch of water but be careful you don't hit one of the coils while drilling it. wrap a piece of tape around the drill bit so It can't go too far. Hope this helps.
Shawn
Owner of Copper State Diesel And Automotive. See my facebook page.

Lanterns are like tools. 
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Tgarner01
Gasman64 wrote:
Any intelligent replies, from knowledgeable people?
If it was a weekday, I'd just go out and buy a new one.  Not in the market for the first cheapest Chinese POS I can find.

Wow! Ouch man... You must be burning up..
Toby Garner
ICCC #1939
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74HARLEY
I just started having the same problem with the air conditioning in our trailer. If I turn it in low it's frozen solid in an hour. It will run all day on high. I just cleaned everything and even pulled out the filter. From my research on the internet it seems like this is the first stages of needing a recharge. Sorry I don't have a better answer Steve.
Joe
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salukispeed
arazonacamper and 74Harley have the best info and the one about blowing out the evap coil ( the frozen one ) to be sure the air is flowing thru easily  and the fan on high and no restrictions is best info I can think of. They are sealed systems and should not need refrigerent/recharge but sometimes  they just do. Do you get it absolutely completely defrosted before trying again as any remaining ice can restart the freezing again because of air flow restrictions
Sorry
Bob
ICCC 1868
Perfection appreciation #10
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Gasman64
Thanks, all, but many suggestions were about doing things I have already done.  Yet, there were some good other points made.
This unit is at least 15+ years old, and I have plenty of money for buying a new unit, so when I have the luxury of shopping around (not so on a Holiday), I'll get something else.
Steve
ICCC #1012

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arizonacamper
I didn't realize it was that old. a new unit will be much more efficient and easier on the ol power bill. I've owned three motels in my life and trust me I've had to replace way more air conditioners than you will ever know or think of and can attest to how much more energy efficient new ones are.
Shawn 
Owner of Copper State Diesel And Automotive. See my facebook page.

Lanterns are like tools. 
You can not have too many unless your wife says so!!

Gas is what you use for washing parts diesel is for making power!

Coleman blues 243 #147
Coleman 275 appreciation #74
Milspec syndicate #39

Looking for any lanterns or stoves dated 5/63 or 1/72
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TSPORT
I had a Panasonic window unit back in the early 2000s. It was the quietest AC unit, we loved it. So of course Panasonic stopped making window AC units by the time we wanted to buy a second one for another room.
Steve
Partial to single mantles & backpacking stoves (liquid fuel, of course!)
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Gasman64
TSPORT wrote:
I had a Panasonic window unit back in the early 2000s. It was the quietest AC unit, we loved it. So of course Panasonic stopped making window AC units by the time we wanted to buy a second one for another room.

Isn't that how things seem to be sometimes? I've had the same luck.

Shawn, thanks, I will be shopping for a new unit next week.
Steve
ICCC #1012

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Ridge Runner
Steve, I get it. You just want to kick back and have some comfort at your place and now this dagnabbit thing peters out when you need it most.

We just recently went through the same thing with our central A/C. Tried all the obvious things that you mentioned. Ended up being low on refrigerant. It ran well for 11 years, must be a teeny leak.

Sounds like after 15 years this one might have given up the ghost. Hope you can get out and snag a replacement ASAP!

— L.J.
Looking for 10/2015 & 1/2020 B-Day Lanterns
I love the smell of naphtha in the morning!
"Ain’t no need to watch where I’m goin’; just need to know where I’ve been" -Tow Mater

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Gasman64
Thanks, L.J., I have plenty of money to buy a new one, just hope I can get something decent.  Seems things nowadays don't last.  I recently noticed that my refrigerator is having its 16th birthday next week.
Steve
ICCC #1012

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arizonacamper
 don't say that where the fridge can hear it otherwise it'll die too.
If you lived a little closer I'd give you a hand.
Shawn 
Owner of Copper State Diesel And Automotive. See my facebook page.

Lanterns are like tools. 
You can not have too many unless your wife says so!!

Gas is what you use for washing parts diesel is for making power!

Coleman blues 243 #147
Coleman 275 appreciation #74
Milspec syndicate #39

Looking for any lanterns or stoves dated 5/63 or 1/72
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Gasman64
I appreciate that, Shawn, but the small appliance clock here says "Time for a new AC unit."  The Panasonic's been no problem for the past 7 or 8 years, but something's wrong, and it was free in the first place.
Steve
ICCC #1012

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JimL
I've no suggestions for your current unit.  However, I have one suggestion for your new one.  Make certain you can run the fan and have it draw fresh air from outside rather than just recirculate inside air.  I assumed they all did this, but learned the hard way that not all do.  This is for the nice brisk days that  you'd rather have fresh air blowing in, but still to soon to remove the AC for the season.

-Jim

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There is a very fine line between hobby and mental illness. - Dave Barry
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Gasman64
JimL wrote:
I've no suggestions for your current unit.  However, I have one suggestion for your new one.  Make certain you can run the fan and have it draw fresh air from outside rather than just recirculate inside air.  I assumed they all did this, but learned the hard way that not all do.  This is for the nice brisk days that  you'd rather have fresh air blowing in, but still to soon to remove the AC for the season.

For just moving air, Jim, I have a nice, big, USA made Patton window fan (all metal) that is in the front of the house.  It's mostly for Spring & Fall, when the outside air at night is nice to draw inside.
Steve
ICCC #1012

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JimL
That's even better Steve, much better.

-Jim

Flammable liquids, open flame, what could go wrong?


There is a very fine line between hobby and mental illness. - Dave Barry
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zoomkat
As others have said, the probable issue is low air flow across the evaporator coils. Some units may have coil freeze detection monitors that turn off the compressor until the coils defrost. The small ~5000 btu probably don't have this, but may just rely on warm air flow across the coils to prevent frosting. You might want to check where so much moisture is getting into the air in the room, or if the air conditioner is undersized for the cooling area. An older window ac I had interesting feature in that in the outside area the fan blade had a slinger ring on the fan rim that ran thru a little depression in the ac bottom. The water dripping off of the cooling coils would run to the outside end due to the gentle slope, and collect in the depression. There the fan slinger ring would pick up the water and sling it such that was sucked back in by the exhaust fan and blown on the hot condensing coils with the cooling air. Pretty neat way of using condensed moisture to increase the efficiency of the condensing section. The point of this is don't drill a drain hole until you have scoped out the mode of operation.
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brucesheehe
Steve, stay cool anyway you can.

You can probably get a better unit at a dedicated appliance store, and they may take your old unit for disposal.
Bruce Sheehe
ICCC #889 - Connoisseur of Time, Friends, Leisure, & Coleman   Altoona, PA - The Mountain City - Near The Eastern USA Continental Divide
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campinut
Freeze ups are usually 2 different causes. Leak of freon or coil reduced air flow. If you repaired air flow issues it is probably freon issues. Make sure compressor is actually running? Usually you can determine this by running fan only and then turning on cool button. If there is a change in sound when switching to cool? Compressor is running. Probably worth the investment in replacing with a more eco friendly, newer unit. Good luck Steve..campinut..
Like a moth at night, I am attracted to the light!..7/7/1964...Russ, from Missouri..
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zoomkat
Something that might need checking are the bearings of the blower fan. In older units the bearings had oil ports where some oil can be put in to oil the bearings. I had one such unit where the bearings started to gum/drag slowing the fan rotation. Carburetor cleaner can be used to free up the bearings and fresh oil added. This might be a temporary fix. As to frosting in a refrigeration circuit, I think typically frosting on a supply line indicates low refrigerant and frosting on the return to the compressor indicates an over charge. Frosting on the evaporator coils probably indicates a generally correct charge. I'd remove the cover again and check to see if the fan rotates freely and make sure the evaporator coils are clean/not blocked. Do note that one needs to be careful using a strong stream of water on the coils at an angle as this can bend the fins over and block air flow.
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Whitegas Extraordinaire
When you look for a new unit look for one stating “quiet operation”

DAMHIK, most of the new cheap window units are loud!

Thank you
Kevin
I frighten easily!

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ICCC # 1865

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