Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: ajsphead on 02 November 2012, 16:51:55

Title: Non functioning aircon f/l V6
Post by: ajsphead on 02 November 2012, 16:51:55
Everything works fine on the HVAC unit. The compressor doesn't clutch in. I had it regassed with no change so need a good fault finding procedure with voltages/resistances at relevant points to check through the system to identify the faulty component. It's currently depressurised so if the compressor is faulty I won't waste money or gas having it done twice.

Thanks

Anthony
Title: Re: Non functioning aircon f/l V6
Post by: martin42 on 02 November 2012, 18:41:34
have you checked the fuse  :y
Title: Re: Non functioning aircon f/l V6
Post by: ajsphead on 03 November 2012, 15:47:41
Coouldn't work out from the description in the manual if there was a fuse for the aircon seperate from the rest of the Hvac unit. I've been used to units that have an aircon switch then relay then unit but as I couldn't find a relevant relay it all started to look different so figured it was better to ask.
Title: Re: Non functioning aircon f/l V6
Post by: RobG on 03 November 2012, 15:51:55
Quote from: ajsphead on 02 November 2012, 16:51:55
Everything works fine on the HVAC unit. The compressor doesn't clutch in. I had it regassed with no change so need a good fault finding procedure with voltages/resistances at relevant points to check through the system to identify the faulty component. It's currently depressurised so if the compressor is faulty I won't waste money or gas having it done twice.

Thanks

Anthony
Unplug connector and put 12V direct see if the clutch engages.
Relays here http://www.omegaowners.com/forum/YaBB.pl?num=1176560725
Title: Re: Non functioning aircon f/l V6
Post by: dbug on 03 November 2012, 23:48:58
Quote from: RobG on 03 November 2012, 15:51:55
Quote from: ajsphead on 02 November 2012, 16:51:55
Everything works fine on the HVAC unit. The compressor doesn't clutch in. I had it regassed with no change so need a good fault finding procedure with voltages/resistances at relevant points to check through the system to identify the faulty component. It's currently depressurised so if the compressor is faulty I won't waste money or gas having it done twice.

Thanks

Anthony
Unplug connector and put 12V direct see if the clutch engages.
Relays here http://www.omegaowners.com/forum/YaBB.pl?num=1176560725

As Rob says - 12V across compressor terminals - you should hear clutch engage with a loud clunk.  Also check you have 12v at the connector plug to compressor.
Title: Re: Non functioning aircon f/l V6
Post by: ajsphead on 04 November 2012, 10:07:39
Thanks

I get the idea. Quick question if I get back that far in the circuit. Do the relays click when they switch?