Heater blower control

BX Tech talk
Post Reply
User avatar
morningglory
Confirmed BX'er
Posts: 81
Joined: Tue Jul 23, 2013 10:32 pm
My Cars: 1994 TZD Estate in 'Canal-Boat Green'
x 4

Heater blower control

Post by morningglory »

Hi,

I was replacing a heater control bulb and lost the little copper ring for the heat control rheostat. Anyone got any idea where I could get one or how to make one?

If I bridge the two arc-tracks on the PCB, the blower should blow, shouldn't it? I'll try that later.

Also, while I'm here, I might try the heater mod http://www.bxclub.co.uk/forum/viewtopic ... 15&start=0

Does this make the blower operate as normal right until you turn it right up?

Any help much appreciated.

Ta,

Joe
1994 TZD Estate in 'Canal-Boat Green'

Image
Mothman

Re: Heater blower control

Post by Mothman »

Good luck with finding another washer, very easy things to lose.
However, if you join up the 2 brown earth wires, the blower should then work. Did this with my TXD 4 years after getting her and it worked just like that.

Andy
Defender110
Over 2k
Posts: 5917
Joined: Wed Dec 16, 2009 8:02 pm
Location: Harwood, Bolton
My Cars: Land Rover Discovery Series 1 200tdi 3 door
Land Rover Discovery Series 2 Facelift TD5
2020 Fiat Panda cross 4x4 twin air.
x 27

Re: Heater blower control

Post by Defender110 »

Mothman wrote:Good luck with finding another washer, very easy things to lose.
However, if you join up the 2 brown earth wires, the blower should then work. Did this with my TXD 4 years after getting her and it worked just like that.

Andy
Surely joining the earth wires isn't going to make it work with out the copper contact ring that he has lost as this is what sends the feed through? I tried to make a replacement one out of a bit of fuse wire when I lost one on one of my old TGD's; it worked intermittently for a while but I ended up putting a rocker switch on in the end with all or nothing blower.
Kevan
1997 Mercedes C230 W202
2003 Land Rover Discovery Series 2 Facelift TD5 - Daily driver / hobby days and camping.
1993 Land Rover Discovery 200tdi Series 1 3 door - in need of TLC
2020 Fiat Panda 4x4 Cross Twin Air.
Tinkley
1K Away
Posts: 1502
Joined: Sat Jun 06, 2009 11:27 am
Location: N Hants England
x 8

Re: Heater blower control

Post by Tinkley »

Tricky one, the copper on the PCB is a rheostat and the copper piece in the switch is the contact/speed control. In my case the plastic of the rotating disc with copper piece 'relaxed' a bit over some 13 years so I managed to repressurise the 'spring contact' to get it working again.

If I were to redo it now, I'd either 3D a new part - because I have that as an option or weld on some nylon struts to the plastic piece to hold it horizontal ie beef up the disc to push the contact back wher it was before. You can make a new contact from Beryllium copper, do not be tempted to use Phoshor Bronze as it is nowhere near as good and will not be as reliable. I would be surprised if RS or Farnell do not sell small strips of the Beryllium copper.
User avatar
mat_fenwick
Moderator
Posts: 7326
Joined: Tue Sep 20, 2005 4:08 pm
Location: North Wales
x 19

Re: Heater blower control

Post by mat_fenwick »

morningglory wrote:Does this make the blower operate as normal right until you turn it right up?
That's correct. Might have a spare PCB knocking around so will check. If not I know I definitely have several of one type of contact - the 'dog bone' type supported by two springs. By the sounds of things you have the other type with a springy strip though?
Image

1993 1.9 TZD Turbo Estate
1996 3.9 V8 Discovery
1993 VW LT35 campervan
1985 Hyundai Stellar V8
2016 Hyundai iLoad
User avatar
Thread Bear
1K Away
Posts: 1651
Joined: Sat Jun 08, 2013 9:47 am
Location: Longcot, near Faringdon, Oxfordshire
x 1

Re: Heater blower control

Post by Thread Bear »

Is this not a family part for Cit/Pugs of that era? Scrappy time?
Miguel - 16 TRS Auto S, light blue, 43k miles - £450
Pluto - 14 E S, White, 105k Miles - in work
Egbert - 19 16v Gti, White, A/C & Leather, - Keeper
Walt - 17 TZD Turbo S, graphite, 70k miles, good op extras - Keeper
Scraper- 17 TZD Turbo E, blue, 208k miles - parts
Homer - 19 TXD E, Red, 189k miles - £250
Gary - 17 TZD Turbo E, 118k miles - in work

'87 Trooper, Borgwards, Saabs, MG ZB, Bellamy Trials, Fiat Jolly & Bianchina, Goggo Dart, Messerschmitt, Heinkel, Bubblecars
User avatar
Tim Leech
Over 2k
Posts: 15565
Joined: Tue Apr 15, 2008 11:12 am
Location: Derbyshire
My Cars: Various
x 141

Re: Heater blower control

Post by Tim Leech »

I may have a spare one somewhere if you struggle.
Lots of Motors, mostly semi broken....
Defender110
Over 2k
Posts: 5917
Joined: Wed Dec 16, 2009 8:02 pm
Location: Harwood, Bolton
My Cars: Land Rover Discovery Series 1 200tdi 3 door
Land Rover Discovery Series 2 Facelift TD5
2020 Fiat Panda cross 4x4 twin air.
x 27

Re: Heater blower control

Post by Defender110 »

The contact ring you need will be the one shown in the bottom right of this picture I assume? (Eledasson?? type)

Image
Last edited by Defender110 on Tue Nov 25, 2014 11:17 am, edited 1 time in total.
Kevan
1997 Mercedes C230 W202
2003 Land Rover Discovery Series 2 Facelift TD5 - Daily driver / hobby days and camping.
1993 Land Rover Discovery 200tdi Series 1 3 door - in need of TLC
2020 Fiat Panda 4x4 Cross Twin Air.
Defender110
Over 2k
Posts: 5917
Joined: Wed Dec 16, 2009 8:02 pm
Location: Harwood, Bolton
My Cars: Land Rover Discovery Series 1 200tdi 3 door
Land Rover Discovery Series 2 Facelift TD5
2020 Fiat Panda cross 4x4 twin air.
x 27

Re: Heater blower control

Post by Defender110 »

This is the other (Chausson) type;

Image
Kevan
1997 Mercedes C230 W202
2003 Land Rover Discovery Series 2 Facelift TD5 - Daily driver / hobby days and camping.
1993 Land Rover Discovery 200tdi Series 1 3 door - in need of TLC
2020 Fiat Panda 4x4 Cross Twin Air.
User avatar
morningglory
Confirmed BX'er
Posts: 81
Joined: Tue Jul 23, 2013 10:32 pm
My Cars: 1994 TZD Estate in 'Canal-Boat Green'
x 4

Re: Heater blower control

Post by morningglory »

Yes, its like the one in the first picture (Eledasson??).

I've made a ring out of copper wire but its not very springy so may scratch the tracks on the PCB away. Works to de-mist me for the time-being anyway.

Tim - if you've got a spare that would be marvellous. I will pay you money or beer vouchers or something!

Thanks,

Joe
1994 TZD Estate in 'Canal-Boat Green'

Image
User avatar
Tim Leech
Over 2k
Posts: 15565
Joined: Tue Apr 15, 2008 11:12 am
Location: Derbyshire
My Cars: Various
x 141

Re: Heater blower control

Post by Tim Leech »

Ok Joe,

It will be the weekend before I can get to my store and take a look.
Lots of Motors, mostly semi broken....
User avatar
morningglory
Confirmed BX'er
Posts: 81
Joined: Tue Jul 23, 2013 10:32 pm
My Cars: 1994 TZD Estate in 'Canal-Boat Green'
x 4

Re: Heater blower control

Post by morningglory »

Thanks but don't worry about it Tim. My homemade version is working fine (better than the original actually which would occasionally drop out). It might fail in time but its OK for now!

Joe
1994 TZD Estate in 'Canal-Boat Green'

Image
User avatar
Tim Leech
Over 2k
Posts: 15565
Joined: Tue Apr 15, 2008 11:12 am
Location: Derbyshire
My Cars: Various
x 141

Re: Heater blower control

Post by Tim Leech »

Okidokey.
Lots of Motors, mostly semi broken....
Defender110
Over 2k
Posts: 5917
Joined: Wed Dec 16, 2009 8:02 pm
Location: Harwood, Bolton
My Cars: Land Rover Discovery Series 1 200tdi 3 door
Land Rover Discovery Series 2 Facelift TD5
2020 Fiat Panda cross 4x4 twin air.
x 27

Re: Heater blower control

Post by Defender110 »

=D> =D>
Kevan
1997 Mercedes C230 W202
2003 Land Rover Discovery Series 2 Facelift TD5 - Daily driver / hobby days and camping.
1993 Land Rover Discovery 200tdi Series 1 3 door - in need of TLC
2020 Fiat Panda 4x4 Cross Twin Air.
Post Reply