Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: GT2200 on 28 July 2007, 08:45:49

Title: Heating / Aircon
Post by: GT2200 on 28 July 2007, 08:45:49

I have a 2000 x plate 2.6 V6 CD and although the aircon blows ice-cold I can not get any sort of heat into the car. With the rubbish summer to date it's quite uncomfortable to have no heating!

Any ideas?

Also an aside but link to being warm, the heated seats don't appear to be working either?

Title: Re: Heating / Aircon
Post by: TheBoy on 28 July 2007, 10:22:20

Try:
Reset the climate unit
Check HBV working

Seats, check fuse

Title: Re: Heating / Aircon
Post by: GT2200 on 28 July 2007, 20:51:05

ok.....'yes' I know how to change a fuse and in a moment of stupidity I put this question in.

BUT.....how do I reset Climate and what and how do I check the HBV?

Title: Re: Heating / Aircon
Post by: Kevin Wood on 28 July 2007, 22:15:28

Hold down the auto and off buttons together for 5 seconds IIRC. You should hear the servos moving for a few seconds afterwards.

Regarding HBV, the pipes to the heater matrix run through the driver's footwell so remove the trim panel above the driver's feet and see if they're getting hot. They should get hot if the climate is set to heat and be cold if the climate is set to "lo" with aircon running. Best to check the latter from a cold start as they will take a long time to cool off if they have been running hot.

Kevin

Title: Re: Heating / Aircon
Post by: GT2200 on 31 July 2007, 13:41:00

Reset aircon.

With regards to HBV, do you actually mean to lift the drivers-side carpet, or somewhere else?

Is the HBV the valve that's near the rad / water bottle, just underneath with two pipes running towards the bulkhead?

Title: Re: Heating / Aircon
Post by: Kevin Wood on 31 July 2007, 14:32:39

HBV is behing the drive's side cylinder head. What you're referring to is the auxiliary coolant pump which is used to extract heat from the engine for heating the cabin when the car is parked. However, that pump is in the circuit controller by the HBV so it should be sufficient to feel the temperature of this pipe. If it gets hot when the climate is set to "lo", or remains cold when the temperature is turned up to call for heat, something's wrong.

Kevin

Title: Re: Heating / Aircon
Post by: GT2200 on 02 August 2007, 23:09:07

Have checked the pipe work on this 'auv' pump and when the cars up to temp it just runs hot all the time.

Something makes me think if the HBV is behind the head it's going to be an aweful job to change it??????

Title: Re: Heating / Aircon
Post by: Kevin Wood on 02 August 2007, 23:42:30

Apparently it's an awkward job but not too bad if you remove the scuttle panel. They're a common failure so plenty of advice available here.

However, if the pipes are getting hot so is your heater matrix, so I'd be inclined to think it's a problem with the actuation of the flaps that divert air through it.

Not sure how to check them but I'm sure someone will be able to help.

Kevin

Title: Re: Heating / Aircon
Post by: ians on 02 August 2007, 23:56:31

HBV is shown here (thanks Ronnie)

http://www.omegaowners.com/forum/YaBB.pl?num=1181719948/0#0

I believe that if the vacuum pipe (elbow shaped connector) on top is disconnected/broken (or similar at the other end where it goes into the cabin), the heater won't blow hot.   You should be able to see /feel for the vac pipe even though access to the HBV is a bastard without some disassembly.

Title: Re: Heating / Aircon
Post by: GT2200 on 03 August 2007, 23:43:29

Thanks Ians and Ronnie......I'll look forward to having a good feel on Monday.