Heater blower problems (I did search first!)

[horney 0]

Just wondering if anyone can help sort me out with a little issue with my blower. It was working fine and quitely for months then it stopped working on 1 -3 and made a burning smell. After reading up on it I found the likely culprit was a blown resistor. My soldering not being up to scratch I bought a used motor and board I was told was working, when I fitted it though I got nothing at all. Gutted having spent £25 for the replacement.

 

So I thought I wopuld try swapping the board from the replacement onto my motor. The thought process being that I was confident that my motor was OK, that it was just the board and that the replacement board should be ok but the motor was dead. I swapped the board and now I have speeds 1 and 4 but no 2 or 3. Humm still gutted.

 

I then pulled more of the dash apart and tested the dial connections which all seem to be fine. Gutted and now annoyed.

 

What's up with it? DO faulty boards sometimes work on 1 and 4 or does all this point to something else?

 

nick

[marf497 0]

I had the same problem as you had originally with settings 1-3 not working I just soldered a wire across the thermal fuse and it all works ok just go back to your original blower motor and board and short the thermal fuse that has blown. I've had mine like this for about a year with no problems there is a fuse for the blower motor in the fuse box anyway.

[mattnorgrove 0]

If 1 & 4 are working then its not the thermal fuse on the blower motor board.

 

AFAIK when the fuse has blown, you get speed 4 only.

 

I reckon it must be the copper contacts on the control dial.

 

When I did the thermal fuse replacment on mine, I was still missing speed 1, the contacts seemed to be ok, but some gentle bending with a pair of pointnoses sorted it out.

 

HTH