Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: Kate on 09 March 2015, 17:23:25
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Hi all.
Just got my new Omega on Saturday but only noticed today that the heater only blows cold air.
The temperature gauge show that the engine warms up fine and seems totally normal. Maybe not the thermostat then?
I checked the outside temp reading and it said 10 degrees and that fluctuated slightly as you would expect. Or could the sensor still be faulty.
Any help would be greatly appreciated to stop my old teeth from chattering. ;D
Many thanks. :y
Kate
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Shot in the dark,and I'm prepared to be corrected but would a faulty HBV not cause this?
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Shot in the dark,and I'm prepared to be corrected but would a faulty HBV not cause this?
Hi mate you may be right,but taxi al suggested.Stat or hbv or blocked heater matrix.I am having the same problems i know i have a lazy stat,but i am going to change.Hbv and flush matrix. :y Dean.
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Maybe it's the HBV then? Pesky little bleeders they are. ;D
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Maybe it's the HBV then? Pesky little bleeders they are. ;D
Tell me about it kate.Seems a lot of work just to change a bit of plastic.Dean.
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Have a look in the guides... not uncommon for the heater control arms to pop off.
Worth checking they move as they should before stripping all your knuckles off ::)
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Have a look in the guides... not uncommon for the heater control arms to pop off.
Worth checking they move as they should before stripping all your knuckles off ::)
Thanks Al, will do. :y
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Kate...have you tried resetting the heating system motors to make sure that they are all working ok.......I had the same trouble as you and i put a screw in the air vac pipe that goes to the h.b.v.and found it made a little heat come out...so thinking I had sussed it I replaced the h.b.v ,,,but it made little difference,,so I then flushed out the system and the heater matrix was fine...I tried all of the suggestions that I was kindly given but to no avail..I was so fed up with freezing me bits off that i have just scrapped the motor and bought another omega and now it is toasty hot and it was well worth the change.. :And also have loads of spares for the new purchase... :y
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Is the vac pipe connected to top of hbv? And is it getting vacuum?
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Thanks for all the help. :y
I'll have a look at the guides and investigate further. It's horrible to think that this problem could be unfixable. :'(
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First thing to try, IMHO, is to turn both sides up to "Hi" and see if you get worm air from either side. That will rule out the outside temperature sensor.
If you get heat one side only, then likely the arm has come off the blending flap for that side, as suggested. If it's cold both sides, then maybe HBV or its' vacuum actuator, or the heater matrix needs flushing, or you're unlucky and both arms have fallen off. ;D
The HBV should be open with no vacuum applied, so run it with the vac pipe removed from the HBV to see if it heats up then.
You can also remove the trim above the driver's feet by pulling out the 3 circular plastic clips and you'll see 2 silver pipes on the left hand side of the footwell that feed the heater matrix from the bulkhead. See if these are getting hot (too hot to touch). If so, you have coolant flow to the matrix.
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First thing to try, IMHO, is to turn both sides up to "Hi" and see if you get worm air from either side. That will rule out the outside temperature sensor.
If you get heat one side only, then likely the arm has come off the blending flap for that side, as suggested. If it's cold both sides, then maybe HBV or its' vacuum actuator, or the heater matrix needs flushing, or you're unlucky and both arms have fallen off. ;D
The HBV should be open with no vacuum applied, so run it with the vac pipe removed from the HBV to see if it heats up then.
You can also remove the trim above the driver's feet by pulling out the 3 circular plastic clips and you'll see 2 silver pipes on the left hand side of the footwell that feed the heater matrix from the bulkhead. See if these are getting hot (too hot to touch). If so, you have coolant flow to the matrix.
Thanks Kevin. :y
It's cold on both sides so I'll try your suggestions. :y
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Mine was like an ice box...swmbo moaning like heck. Did a matrix flush as per the guides....was very easy really. Warm as toast now :y
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Well I did the matrix flush and followed the guides exactly.
The result is that it still blows cold from the front vents.
However, I just noticed that there is hot air blowing out of the rear vents. ::)
I'm really confused. ???
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Reset? Hold off and auto together until the vents start buzzing.
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Reset? Hold off and auto together until the vents start buzzing.
Thanks Chris, I tried that but it didn't work.
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Cycling the directional arrows, do they respond? Does the re circ flap respond?
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Cycling the directional arrows, do they respond? Does the re circ flap respond?
I'll go and test it.
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Yes everything responds.
Always get cold air through front vents and hot air through the rear.
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But if you select windscreen only, do you still get air in the foot wells and out the vents?
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Yes everything responds.
Always get cold air through front vents and hot air through the rear.
3.2 is other way around for me, cool at rear vents hot through others. Toes get nice and hot, but rear still cool.
Tried flushing matrix, resetting system (via the auto-circulate) holding auto ect. Arm thing that controls vents appears ok, still sod all.
Now I just force the air to face and feet via the controls and it's fine, although rear vents still not great.
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But if you select windscreen only, do you still get air in the foot wells and out the vents?
I don't think so, I'll have to check.
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I found this on the WWW:
"The climate ECU had to be hard reset twice - a hard reset consisting
>> of disconnecting neg and pos battery terminals and dis/re-connecting
>> both ECU connectors.
>> Joy of joys when hot air came gushing out of the correct vents ...
>> WOOH ! Seems a single reset just wasn't enough."
"The ECU is incorporated in the climate control panel.
Just remove the dash switch panel and there are two connectors plugged in
the back of the climate control unit/ECU - the yellow one on the N/S can
come out without invitation, so make sure it stays put (it unplugs by
pulling out the black plastic retaining clip).
After the first hard reset, I had different temps on left and right.
Good luck ta ya, dude."
Would this fix it? ::)
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But if you select windscreen only, do you still get air in the foot wells and out the vents?
I don't think so, I'll have to check.
Let us know the outcome when you do.....as its a critical key indicator as to the cause. :y
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Does sound like incorrect opperation from the cc panel.
On the face lift, quite often I find the reset doesn't work, unless it's done with engine off, key in ignition position 2. ...?
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But if you select windscreen only, do you still get air in the foot wells and out the vents?
I don't think so, I'll have to check.
Let us know the outcome when you do.....as its a critical key indicator as to the cause. :y
Right, I've just been out and tested it.
I put the blower on full, turned the temp to Hi and switched to windscreen only. The engine was at normal temperature.
Result:
1. A little cold air was coming through the front side vents.
2. Nothing came through the middle front vent.
3. Lots of hot air was coming through the rear vents.
4. I didn't notice any air in the footwells.
5. Some cold air was blowing on the windscreen.
I hope this means something.
Thanks very much for helping. :y
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Does anyone know the answer to my problem? :y :-* :-* :-*
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Would it be worth buying a Haynes manual, do you think? :y
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Haynes manuals covered the P/F/L and M/F/L models and not the F/L,however how much if at all this affects things in regard of possible differences in operation I don't know.
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No-one seems to know the answer to why I can only get warm air to the rear vents and not the front ones.
I don't know where else to look.
Thanks for the help. :y
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I've got to drive 600 miles next week. I wish I could get this sorted.
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Some problems are such are nuisance. Windscreen keeps misting up when it rains. ::)
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But if you select windscreen only, do you still get air in the foot wells and out the vents?
I don't think so, I'll have to check.
Let us know the outcome when you do.....as its a critical key indicator as to the cause. :y
Right, I've just been out and tested it.
I put the blower on full, turned the temp to Hi and switched to windscreen only. The engine was at normal temperature.
Result:
1. A little cold air was coming through the front side vents.
2. Nothing came through the middle front vent.
3. Lots of hot air was coming through the rear vents.
4. I didn't notice any air in the footwells.
5. Some cold air was blowing on the windscreen.
I hope this means something.
Thanks very much for helping. :y
Ok ...Shot in the dark time ;D ;D ;D
Can you control the heat in the rear vents...IE... On the panel... make it warm.....Make it Cool... Turn panel to low and get the air con on and make it omega cold ..
Second one...Can the seller shine any light on your problem like....Did he have it too ...Did it start on one side then in time it happened to the other... Did it just happen.... :-\
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Yes, if you turn down to Lo then it goes cold through the rear vents.
Thanks for helping. :y :-*
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But if you select windscreen only, do you still get air in the foot wells and out the vents?
I don't think so, I'll have to check.
Let us know the outcome when you do.....as its a critical key indicator as to the cause. :y
Right, I've just been out and tested it.
I put the blower on full, turned the temp to Hi and switched to windscreen only. The engine was at normal temperature.
Result:
1. A little cold air was coming through the front side vents.
2. Nothing came through the middle front vent.
3. Lots of hot air was coming through the rear vents.
4. I didn't notice any air in the footwells.
5. Some cold air was blowing on the windscreen.
I hope this means something.
Thanks very much for helping. :y
Ok ...Shot in the dark time ;D ;D ;D
Can you control the heat in the rear vents...IE... On the panel... make it warm.....Make it Cool... Turn panel to low and get the air con on and make it omega cold ..
Second one...Can the seller shine any light on your problem like....Did he have it too ...Did it start on one side then in time it happened to the other... Did it just happen.... :-\
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Yes, if you turn down to Lo then it goes cold through the rear vents.
Thanks for helping. :y :-*
How about that one.. :-\
Its just that any history always can helps...
It helps others on here to get an idea of what they are looking at.. Therefore i Believe the more you give them the Quicker you get sorted...
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Yes, if you turn down to Lo then it goes cold through the rear vents.
Thanks for helping. :y :-*
How about that one.. :-\
Its just that any history always can helps...
It helps others on here to get an idea of what they are looking at.. Therefore i Believe the more you give them the Quicker you get sorted...
Thanks. :y
I'm not sure what other information I need.
The heater is working fine now but the heat only comes out of the rear vents.
What else do I need to find out?
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Needs plugging into a Tech2 to systematically check that everything is behaving as it should :-\
Could try swapping the climate panel as it contains the climate ecu...
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Needs plugging into a Tech2 to systematically check that everything is behaving as it should :-\
Could try swapping the climate panel as it contains the climate ecu...
Thanks Al. :y
Hope the job is going well.
Is that the bit with the buttons on it?
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Aye that's the oojamiflip :y
There is a software update, but whether it's had it or not is anyones guess...
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I do not know what's causing this, but without tech 2 access I'd be looking at swapping the cc panel as a next step.
Assuming;
vac is applied to the hbv. (Is it worth removing the vac pipe just to see if it makes any odds? )
The reset has been done successfully.
The re circ button has been cycled in case the blend flap gets fuddled, as the service bulletin on TIS iirc...?
The vent flap motors are connected (or whatever they are, I've no exoerience of that issue, although I think it's a differant issue affecting left right? )
Auto is selected and ac on (Eco off)
If it's still not right after that lot, in the absence of tech 2 I'd swap the panel out for a known good one.
But ideally I'd want to ID the fault before touching anything, which does need tech 2.
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Thanks very much for your help. :y
Is it worth replacing the cc panel first or should I find someone with a tech 2?
This is a very strange problem. I've never come across it before.
My 8th Omega and there's always something new. ;D
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Thanks very much for your help. :y
Is it worth replacing the cc panel first or should I find someone with a tech 2?
This is a very strange problem. I've never come across it before.
My 8th Omega and there's always something new. ;D
Seeing as nobody knows the answer to the problem, safe to say it's not a common issue. Interested to see what the fault is tbh.
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I think Tech 2 first is the way to go. I'll try and arrange something.
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I think Tech 2 first is the way to go. I'll try and arrange something.
Thing is you need a guy who knows how tech2 works, which counts out most dealers.
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Kevin if you're coming back Ampshire way :y
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http://www.omegaowners.com/forum/index.php?action=profile;u=721
Tech 2 info at the bottom.
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Thanks, I'll ask Kevin after I move on Thursday. :y
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Thanks, I'll ask Kevin after I move on Thursday. :y
Question I have to ask, coz im nosey....is why the move from Looe? I'd love to live on the coast and will one day :)
You can tell me to mind my own business if you like Kate......I wont take offence :y
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Thanks, I'll ask Kevin after I move on Thursday. :y
Question I have to ask, coz im nosey....is why the move from Looe? I'd love to live on the coast and will one day :)
You can tell me to mind my own business if you like Kate......I wont take offence :y
No, of course I don't mind you asking. The only reason is to be nearer my daughter.
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Thanks, I'll ask Kevin after I move on Thursday. :y
Question I have to ask, coz im nosey....is why the move from Looe? I'd love to live on the coast and will one day :)
You can tell me to mind my own business if you like Kate......I wont take offence :y
No, of course I don't mind you asking. The only reason is to be nearer my daughter.
Good reason :y
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She was living in Malta but she came back and got a job in Warwick.