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View Full Version : How come my aircond got mood swing



kmlim
16-01-2010, 11:09 AM
I am using Panasonic Inverter 1.5 HP aircond, but I've noticed sometime it is cold and some time not even though on the same temperature setting, when it is not, I am sweating and when it is I am even shiver!

yvonnefoong
16-01-2010, 11:18 AM
Yah I find this to be a problerm with my aircond too. It's probably not a Panasonic. Mom said it's because we need to service the aircond occassionally and if we don't, it'll act up. But I don't know any better so I don't know if she is correct or wrong. :D

Sometimes, I'd go to sleep with a blanket but wake up in the middle of the night sweating profusely.

bslee
16-01-2010, 12:37 PM
If your a/c is a Panasonic, and under warranty, call their service center at +603-5543 7600 or look here (http://www.panasonic.com.my/web/cid/MainCont/351)
They're likely to send some technicians over to your place to assist you. They're prompt and professional. Their email contact for communication is also prompt.

Inverter or not, its still very much the same heat exchange operating principle and must be periodically serviced (depending how polluted and dirty) for optimum performance.

dannysee
16-01-2010, 12:51 PM
Hi, KMLim, I am using the same model as yours. I experience the same phenomenon as you mentioned. The solution is DO NOT set your cooling mode to "Auto", set the temperature of your choice, e.g. 26 deg C, then you most likely will experience 26 thru-out the night. The technician who install my unit told me this, and it worked! However, you can set the wind speed to auto if you want to, but it may stop blowing in the middle of the night when it sense the temperature reached what you have set.

Sentinel
16-01-2010, 02:07 PM
Me no engineer but me think the sensor which senses the air temp around the room not good because under "auto" mode, my Panasonic also kelam kabut an hour or two later, so its 24 degrees throughout the night set manually. :D

besitai2007
16-01-2010, 05:31 PM
One quick fix is to clean out the filters placed over the cooling fins. You can open up the cover and usually there are two pieces of net-like covers over the cooling fins. Take them out and a lot of times you can see the amount of dirt on them (mostly our body skin flakes). Wash them out with aq strong spray of water and then dry them out. This is usually a good quick fix. If this doesn't help you may have to call the experts to chemical wash the fins as the trapped dirt decreases their cooling efficiency.

bslee
16-01-2010, 09:21 PM
Please be very wary about so called "chemical cleaning". Whoever contractor better be careful about it. These acidic chemicals are quite corrosive to the aluminum fins and can eat up the fins for breakfast. Their cleaning chemical is usually diluted from a concentrate based on experience but usually on the strong side to tackle difficult and filthy coils often seen. After a few washes, it can result with a weak and inefficient cooling. Don't do it too often but only as a last resort.

rachel sj
18-01-2010, 10:20 AM
just a bit of side track....i am using the same model of air-con from panasonic Kmlim is using. But instead of the mood swing, mine always gives out foul smell akin to "salted fish" since few months ago....anyone knows the cause to this ? Thanks.

currymee
18-01-2010, 10:22 AM
just a bit of side track....i am using the same model of air-con from panasonic Kmlim is using. But instead of the mood swing, mine always gives out foul smell akin to "salted fish" since few months ago....anyone knows the cause to this ? Thanks.

Better check you don't have any dead cicaks or rodents in the aircon system - usually "funny smells" like that can be due to dead animals. :eek: :eek:

rachel sj
18-01-2010, 10:31 AM
Better check you don't have any dead cicaks or rodents in the aircon system - usually "funny smells" like that can be due to dead animals. :eek: :eek:

Gosh ! :eek: I better call the service center given by bslee and remove the cicak/rodent from the air-con right away !!

LMei
18-01-2010, 10:51 AM
The solution is DO NOT set your cooling mode to "Auto", set the temperature of your choice, e.g. 26 deg C, then you most likely will experience 26 thru-out the night.
Totally agree. Experienced this myself and experimented around with the settings. Also do not put temp to high else once it reach that temp it will stop blowing until it gets hot then start again. You get erractic temp in the room.

bslee
18-01-2010, 11:03 AM
Pungent smell from air con is usually from the damp and clogged fan coil and fungus infested fan coil tray. Dust, dirt and contaminants embedded in any fan coil IS rotten and smelly. This applies to car air con and can be even worse. To do justice is always an entire dismantle of the air con unit for a full and thorough stripdown and wash by the contractor. Nothing beats that. Should be done once in a few years but note, its costly because of labor and materials (evacuate and refill refrigerant gas).
1. Fan coil wash - Dirty or stuck.
2. Fan coil water collection tray - Dirty, fungus or stuck outlet.
3. Blower fan - Embedded with dirt on fins reducing blower efficiency.

Above 3 are most associated with reduction of efficiency. Solution is total stripdown and thorough wash..as good as new thereon.

Sorry folks, USJ SUBANG AREA IS with VERY POLLUTED DUSTY AIR.. No air con can last long without service.

Rhiga
18-01-2010, 11:17 AM
Sorry folks, USJ SUBANG AREA IS with VERY POLLUTED DUSTY AIR.. No air con can last long without service.

Well, if you stay 100 feet and above, quality of air is good and definitely better than ground. :D

bslee
18-01-2010, 02:17 PM
Well, if you stay 100 feet and above, quality of air is good and definitely better than ground. :D

No lah.. unless you live above the clouds lah! :D ( you won't need air con then.)

currymee
18-01-2010, 02:19 PM
Pungent smell from air con is usually from the damp and clogged fan coil and fungus infested fan coil tray. Dust, dirt and contaminants embedded in any fan coil IS rotten and smelly. This applies to car air con and can be even worse. To do justice is always an entire dismantle of the air con unit for a full and thorough stripdown and wash by the contractor. Nothing beats that. Should be done once in a few years but note, its costly because of labor and materials (evacuate and refill refrigerant gas).
1. Fan coil wash - Dirty or stuck.
2. Fan coil water collection tray - Dirty, fungus or stuck outlet.
3. Blower fan - Embedded with dirt on fins reducing blower efficiency.

Above 3 are most associated with reduction of efficiency. Solution is total stripdown and thorough wash..as good as new thereon.

Sorry folks, USJ SUBANG AREA IS with VERY POLLUTED DUSTY AIR.. No air con can last long without service.

BS, do you know of a reliable contractor who can do the above as mentioned? I believe my aircons are also overdue for a stripdown cleaning - 4 years since I bought them.

Rhiga
18-01-2010, 02:28 PM
Relatively speaking, air quality at higher altitude is better as heavy dust/particles will settle down to ground.

I stayed at 3rd floor before and I am now staying at 11th floor (about 120 feet height), I feel the difference in air quality.

However, no matter how high in a high-rise condo, air-conditioner is still an essential appliance due to the humid weather, not so much of heat.

Cheers