heater switches

[fatpasty]

Hi

this is my first post, and i'm new to t25 ownership. on my heater there are 2 fan switches either side of the sliders. the one on the right works fine, lots of noise and reasonable amounts of hot air. The one to the left of the sliders doesn't appear to do anything, apart from make the headlights go dimmer amd make the oil warning light glow dimly. The van is a 1988 1600 non turbo deisel.

Anybody got any ideas?

Fat Pasty

[ewenmaclean]

Hello and welcome,

it sounds non-standard to me, but a picture might help. Extra switches added to these vans are sometimes to do with switching the radiator fan on manually, or possibly a glow plug override - but to be honest it could be almost anything. Only way to tell is to chase the wires back I'm afraid.

Ewen

[Oldiebut goodie]

I have two sets - one is redundant being a left over from when the rear heating was removed upon conversion.

[ewenmaclean]

Hello,

Peter (fatpasty) sent me the picture:



sorry - I was wrong - it's as Oldie says - for the rear heater. Peter says there's a trumatic there so I imagine it's disconnected but if it's still there it'll look something like this:



if the lights go dim then I'd say you may have an earth leak from the trailing wires from the switch, or as an outside possibility the heater is still there and the fan is locked up but not blowing a fuse somehow as it should...

Ewen

[fatpasty]

The heater is still there! turning the switch on and off has no effect on the heater, so i assume it's either dead of disconected, i thought about removing it, but will have to decide what to do with the water pipes.

Peter

[ewenmaclean]

Hello again,

I would get a multimeter and see whether it gets power with the switch on - if it does and nothing moves the fan may be seized and will be drawing current but somehow not blowing a fuse - or there could be an earth problem in the wiring. There should be a fuse for it should above the main fuse box and should be 20 amps. See if when you take that out the problem with the lights dimming stops.

It's easy to sort the coolant problem out - lots of option - either putting a straight through join in place of the tee under the van or just blocking those end off and tidying them away.

Hope that helps a bit -

Ewen

[fatpasty]

Thanks Ewen,

I'm beginning to understand how much time a 23 year old camper takes, it's 2 steps forward and one step back at the moment, or maybe vice versa

Peter

[ghost123uk]

The one to the left of the sliders doesn't appear to do anything, apart from make the headlights go dimmer amd make the oil warning light glow dimly.

Hi Patsy

Others have mentioned this but not LOUD enough in my opinion.

If when you operate that switch the headlights dim then something is drawing a LOT of power, really a fuse should blow, but it ain't.
This NEEDS sorting (or don't operate the switch!) as it could quite easily pose a fire risk !
I would undo the wires going to that heater motor (tape them up separately) and briefly operate the switch to see if the headlights still go dim.
If they don't, you have solved it, if they do, you / we need to look again at this.

Stay safe

John