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 A vintage LG air con repair.
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 Return to top of page · Post #: 1 · Written at 1:11:01 PM on 24 March 2025.
Fred Lever's Gravatar
 Location: Toongabbie, NSW
 Member since 19 November 2015
 Member #: 1828
 Postcount: 1381

I say vintage because any older than 5 years seems to be out of date and useless now!
Actually the repair was an old LG window mount aircon probably 25 year old.

Its a simple repair but worth telling between radio articles.

LG Air Conditioner Repair

Fred.


 
 Return to top of page · Post #: 2 · Written at 8:34:41 PM on 24 March 2025.
Robbbert's avatar
 Location: Hill Top, NSW
 Member since 18 September 2015
 Member #: 1801
 Postcount: 2215

I've got an old aircon in my house, it just needs new gas, but that kind of gas isn't available any more, due to some kind of environmental thing. So if I want air-conditioning I have to get a whole new unit. I decided not to bother and just live with the heat & humidity.


 
 Return to top of page · Post #: 3 · Written at 12:12:23 AM on 25 March 2025.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6887

Maybe R-22? It's still available in limited quantities and increasingly expensive.


 
 Return to top of page · Post #: 4 · Written at 6:49:16 PM on 25 March 2025.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 2641

You don't have to use the old stuff, new refrigerant will work, just less efficiently.


 
 Return to top of page · Post #: 5 · Written at 8:32:49 PM on 25 March 2025.
Fred Lever's Gravatar
 Location: Toongabbie, NSW
 Member since 19 November 2015
 Member #: 1828
 Postcount: 1381

Rob it may be easier to junk the old one and buy a small new efficient unit.
Then pay attention to the ventilation of the house.
If you move the hot air out and aim at 30 deg rooms thats half the battle.

The secret in air con the smart way is to insulate the rooms from heat and remove room top air heat with exhaust fans.
Houses now have a ridiculous size of aircon 10 Kw+ or so installed because the house is sealed up like a tomb and built with a black roof!
I've been in houses with ducted sealed systems that would cool a shopping centre!

I have the 1.6Kw Fujitsu that can cool the body of the house because there are up to three ceiling fans that pull the top air out.
Fresh air air comes in via wall or floor vents. The house breathes.
The kitchen baby LG window unit offsets heat input from cooking drawing 0.5Kw constant.
The bedroom window units alone can pull the room temps down to comfort in 35+ temps as local circuits drawing about 0.3 Kw.

For normal summer cooling I read around 1Kw of electrical power drawn by the Aircons, the freezer and fridge draw about the same so at worst I may see 2Kw + lighting say 2.5 Kw maximum. At rest, no aircons or fridges my power draw is about 300W. Thats all the phantom loads and standby stuff.

The dishwasher is Mr and Mrs Lever in the sink.
No I'm not a heating and cooling engineer, just a polymath with common sense!

Fred.


 
 Return to top of page · Post #: 6 · Written at 10:48:23 PM on 26 March 2025.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7564

Document uploaded.

Capacitors clagging on split phase motors are a common fault. In my line of work they mainly blow in commercial fridges and jacking pumps on fire suppression systems. Good to see this otherwise good machine saved from landfill.

There is a lot to be said about older homes, one of which I live in. High ceilings with air vents in each room keep excessive heat out and there is no real need for an air conditioner for most people. Modern homes with their low ceilings, no ventilation at all, huge windows to let the summer sun blast right in and, as Fred mentioned, black roof tiles, make for homes that are about as energy efficient as a heated swimming pool.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
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