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Author Topic: the downside to my recently fitted heater matrix  (Read 1941 times)

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ChrisPee

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the downside to my recently fitted heater matrix
« on: 19 May 2020, 18:55:57 »
Please help!

My poverty spec 8 valver had a heater that was about as warm as human breath in the winter, this led to me replacing the clogged matrix  in Feb. Although it has a tiny leak (had to reuse the O rings as the new matrix came without them) I can live wit that, what is driving me mad is the fact that once the car is up to temp the matrix is red hot....which is great - but so are my feet in the roasting foot-well!

Does anyone have any suggestions or have I done something wrong? The heater brows cold out of the face-vents, but with no air-con in 25+degrees weather it's like driving a sauna!  :-[
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cam.in.head

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Re: the downside to my recently fitted heater matrix
« Reply #1 on: 19 May 2020, 19:57:03 »
hi. if it were me i would first try a manual reset on the system to set all the flaps etc.
and then i would check the actuator levers/ rods. they can slip out of the ends easily .mine were out.
you will need to remove the upper trim pieces( cardboard/foam ) and then some parts of the side where the console goes to the front and meets the heater. i beleive there is a guide to this.
there are little control motors that move the levers and flaps .it will make sense more when you have a look !
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Doctor Gollum

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Re: the downside to my recently fitted heater matrix
« Reply #2 on: 19 May 2020, 20:01:38 »
Purely mechanical system on that, so check that everything is still connected after the matrix change and that all the knobs and levers function correctly ;)
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cam.in.head

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Re: the downside to my recently fitted heater matrix
« Reply #3 on: 19 May 2020, 20:03:46 »
ah sorry dg didnt realise that.
that should make it a lot easier to find fault thou for him !
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Doctor Gollum

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Re: the downside to my recently fitted heater matrix
« Reply #4 on: 19 May 2020, 20:05:29 »
Quote from: cam.in.head on 19 May 2020, 20:03:46
ah sorry dg didnt realise that.
that should make it a lot easier to find fault thou for him !
True dat :y
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ChrisPee

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Re: the downside to my recently fitted heater matrix
« Reply #5 on: 19 May 2020, 20:13:50 »
The temp dials do change the temp, what I can't get my head around is, if you set to cold is it meant to stop the hot water circulating through the matrix? Or am I being completely stupid? It's residual heat radiating from the matrix making the foot-well like an inferno.  :o
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Re: the downside to my recently fitted heater matrix
« Reply #6 on: 19 May 2020, 20:35:22 »
Does it have an Hbv under the bonnet?
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ChrisPee

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Re: the downside to my recently fitted heater matrix
« Reply #7 on: 19 May 2020, 21:04:00 »
Errrrm, what's one of them?  ???
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Re: the downside to my recently fitted heater matrix
« Reply #8 on: 19 May 2020, 21:13:51 »
Heater bypass valve...
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ChrisPee

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Re: the downside to my recently fitted heater matrix
« Reply #9 on: 19 May 2020, 21:17:36 »
I think I've seen on another thread this valve - is black and round like a giant heater dial? I will have have a look tomorrow. Can they be retro-fitted if I don't have one? That will definitely solve it.  :y
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Re: the downside to my recently fitted heater matrix
« Reply #10 on: 19 May 2020, 21:19:45 »
I know they're fitted to all Omegas with Electronic Climate Control, regardless of age, but not sure if this applies to aircon or non aircon cars :-\

That said, they're vacuum controlled, so would be easy enough to engineer a solution with a vacuum switch and some plumbing ;)
« Last Edit: 19 May 2020, 21:22:09 by Doctor Gollum »
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