Heater not heating

[MartyR]

Hi All,

Had a problem start this afternoon. The blower controls stopped working completely, no output whatsoever. Also the backlight doesn’t work, I thought initially it maybe the fuses so I have replaced them but the old ones seemed ok. Strange thing is the air con still lights up and you can hear it kicking in.

I’m sure I’m just missing something simple here but I can’t think what it is. Am I missing some hidden fuses some where? Any help would be great.

Cheers

Martin

 

[Dumdum]

do you mean the fan/blower motor doesn’t blow?

 

[MartyR]

Yeah that’s it, I’m not the greatest at explaining

 

[Dumdum]

It could be the resistor if it’s a 0-4 dial? Or the speed controller if it’s a climate control type

Easy to test by shorting out the plug for the resistor and effectively putting the fan on full speed, generally pick the biggest 2 wires and short them out while the engines running, fan should run full speed

 

[Dumdum]

There’s a little thermal fuse that looks like a rocket at the tip if its 0-4 manual speed controller

 

[MartyR]

Thanks will give that a go. Does this power the back lights as well then?

 

[Dumdum]

Thanks will give that a go. Does this power the back lights as well then?

Nope, I would suggest that’s probably blown bulbs and purely coincidence

 

[MartyR]

So the blower has magically decided to start working again which is great but I'm not happy as it probably will do it again. Is there any electrical testing I can do or get done on this?

 

[Doogle]

Fairly easy to take the fascia off and check plugs and wiring for damage or loose connections.

 

[Sean197]

If it's a resistor there are replacement kits on ebay for under a tenner.