Thread: Old aircon help.

I would think it is a capicator for the motor . Works bit like a condensor in a car distributor. If it has any markings on it so you can get the correct size you should be able to buy a new one from places like Haymans Electrical or some one who repairs A/C's. Most electrical motors have them & they are only used on start up.

Thats an old run capacitor,for the compressor or the fan motor.

Pull it out and try not to get any of the oil on yourself,its not nice.

It will have a microfarad and voltage reading on it,needs to be replaced with one the same.

The new one will probably be plastic and a different physical size.

It may not be the only problem with the unit as it has been dropped.

I would get the AC checked before spending any money on it.Those box units are pretty cheap to buy.

Got the unit out but when trying to clean it to read the info faded away!!! Damn i thought it was inscribed so hit it with degreaser.

I'd start with around a 40 micro farad unit although it could be 80 or 120 odd, but something like this - CBB65 450VAC 40uF AC Motor Capacitor Air Conditioner Compressor Start Capacitor | eBay - should work.

Originally Posted by DAMINK

Got the unit out but when trying to clean it to read the info faded away!!! Damn i thought it was inscribed so hit it with degreaser.

The capacitors are not hard to find, but you really need the correct size. Call the following with the model number that you can see on the name plate:

1300 65 88 00 | info@chevronair.com.au
Chevron Electrical and Air Conditioning

edit add the following: that is a run capacitor, not a start, so it needs to be the correct size. Run vs. Starting Capacitor - Differences Explained

That Fleabay link says start cap,but it looks like a run cap in the pic.

The one in the AC will be a run cap.
You could check the old cap with a meter that reads capacitance,and often it will read correctly,even though leaking oil.
Both the fan motor and the compresser will be PSC motors,so they only have a run cap,no start cap.

You need to determine whether it is wired to the fan motor or the compresser.
Compresser cap will be around 25 microfarad up wards,fan will be anywhere from 3 microfarad up to about 8 microfarad.

Or contact spare parts supplier of the AC,and they may be able to tell you what the capacitor is.

As i have already said,get the unit checked out before spending any money on it,as it may have more issues,and not be viable to repair.

You need to determine whether it is wired to the fan motor or the compresser.

Well, the OP has posted a circuit diagram, so it is pretty obvious how it is wired.

Originally Posted by scarry

That Fleabay link says start cap,but it looks like a run cap in the pic.

The one in the AC will be a run cap.
You could check the old cap with a meter that reads capacitance,and often it will read correctly,even though leaking oil.
Both the fan motor and the compresser will be PSC motors,so they only have a run cap,no start cap.

You need to determine whether it is wired to the fan motor or the compresser.
Compresser cap will be around 25 microfarad up wards,fan will be anywhere from 3 microfarad up to about 8 microfarad.

Or contact spare parts supplier of the AC,and they may be able to tell you what the capacitor is.

As i have already said,get the unit checked out before spending any money on it,as it may have more issues,and not be viable to repair.

Just the man we were looking for.