Ventilation fan not working

[nordin450]

Trying to figure out what have gone wrong with my ventilation fan.

Have checked all fuses but not sure what to check next. Any ideas?

The car is fitted with AC and that still switches on and off when I play with the control.. Just the fan not switching on at all.

[edtvr]

There have been a few posts on this subject,
It may well be that the heater control unit has packed up.
This is a module that situated under the dash cowl,
a new one costs about £150.00 if I remember correctly.
My one packed up over a year ago and I havn't got round to replacing it yet.
Hope this helps?

Ed

[mick_coupe]

I had the same problem with mine, it turned out to be a faulty connecter on the heater control unit,quite a common problem i think.You'll probably have to take the top of the dash off and check it.

Mick

[nordin450]

Thanks for the replies, had previsouly searched for "ventilation" type keywords without finding anything.

Loads of good threads come up when searching for "heater control unit".. Will check these things out and report back the result.

Wonder if I'm brave enough to take the dash of though.. Hmmmmmm

[paulathome]

Had the same problem with mine about three weeks ago.
Took the dash off to find the connector that plugs in to the fan control box
had melted.
The problem is the connector is not up to the job and is on the limit of
the current drawn by the heater motor.
I did find a source for the connector but decided to rewire directly to the
pins inside the box.
Undo the four screws on the connector end of the control box and undo the small screw
on the side of the box which clamps a transistor or voltage regulator (forgotten which)to the box inside
which acts as a heat sink. Then slide out the circuit board.
Cut off the connector inside leaving about 4mm of pin sticking out of the circuit board
and then solder some wires of a similar thickness to the pins.
I then used some yellow bullet type connectors (male)on the other ends of these wires
which I cut to about four inches long.
I cut the connector off the loom in the car and fitted female bullet crimps to these
wires.
Connected everything up and the heater blower now works better than before as I think
the connector had been high resistance for some time until it got hot enough to fail completely.
You must remember to ident the wires before you start to make sure they are fitted correctly when complete.
Hope this is of some help.
Cheers
Paul.