1.2 Panda 06
Searched but can't find definitive answer tho Herts Hill seems to suggest so. Can you get to the blower pack by removing the fan? Or is there an easier way without removing steering column?
Fan only working on 4 so presume thermal fuse gone. Why overheating? Fan not noisy. Can see pack in drvers footwell. Fuse looks ok but can't get to it that way as grille obstructs.
Thanks.

alban said:

1.2 Panda 06
Searched but can't find definitive answer tho Herts Hill seems to suggest so. Can you get to the blower pack by removing the fan? Or is there an easier way without removing steering column?
Fan only working on 4 so presume thermal fuse gone. Why overheating? Fan not noisy. Can see pack in drvers footwell. Fuse looks ok but can't get to it that way as grille obstructs.
Thanks.

Click to expand...

Hi,
Herts Hillhopper not sure,

check my guide for gaining better access,

https://www.fiatforum.com/panda-guides/339361-heater-matrix-change-lower-dash-removal-info.html
MikeySkiBoy may have pics too..??

Charlie - Oxford

No photos I'm afraid. I just followed the instructions from this thread: https://www.fiatforum.com/panda/138442-rattle-heater-fan.html?p=1451043
And things were fairly straightforward, albeit a bit awkward.

Anyone have any idea where the wires from the heater fan selector switch end up? If the actual switch is definitely OK, that's where I would probably look next.

Interesting that the fan will only go flat out. That probably proves that the fan and the fuse is OK and that is more likely to be the control circuitry. That is unless the fan motor has different coils for the different speeds and therefore could have a possible problem - I think this is unlikely but I am guessing so could be talking complete kakk!

I have no idea how this control is done, but suspect it is simply a varying voltage ti the fan motor that controls the speed, with flat out being 12 volts and each heater position below that being a lower voltage. This is probably done by some form of selectable resistor matrix to allow the voltage drops to be obtained - but this is another guess. If that is correct, the obvious thing to control this from would be an ECU. Sorry.

thanks for the link,
the motor speed IS controlled by a "resistor pack",
just unsure of it's location,
as a hint/ aid ;
it would normally have a plug with 4 or 5 wires ( in parallel) and the flange of the plug will we screwed into the fan's chamber - as the resistor part get VERY hot..so is sited in the airflow,
Charlie

alban said:

1.2 Panda 06
Searched but can't find definitive answer tho Herts Hill seems to suggest so. Can you get to the blower pack by removing the fan? Or is there an easier way without removing steering column?
Fan only working on 4 so presume thermal fuse gone. Why overheating? Fan not noisy. Can see pack in drvers footwell. Fuse looks ok but can't get to it that way as grille obstructs.
Thanks.

Click to expand...

hi ,
is your panda LHD..?, as I'M 90% sure the fan housing is in the UK passengers footwell.

looked on ePER, :idea:
can't find a specific reference to the resistor pack..,
I'll look under my panda dashes..,
what model panda do you have..??,
Charlie

Thanks guys
06 Panda 1.2 8V RHD.
I can see the unreachable resistor pack in drivers footwell with recirculate switched to on. But can you reach it to change it if you first remove fan from passenger side? Just a question of getting access to pack that way. Did you see it when you removed the blower/fan?

The resistor pack is fitted into the housing from the right side. The wiring into it is possibly hiding the screw that holds it in. Haynes says undo the pinch bolt at the bottom of the steering column and lift it off the rack and out of the way. (Bolt should be replaced, get the right one, grade 10, not the common 8.8)
Then remove the bolt, and extract the resistor pack from the driver's footwell.

Removing the fan will do you no good. The resistor pack still has to be fitted from the outside, from the driver's footwell.

Resistor pack is fitted inside so that airflow cools it.

Ah OK steering column out then! Any torque setting for bolt? Do I have to do something to the air bag?
Thanks a lot.

No, you do not need to take the whole column out.
Remove the bottom bolt only. Then the lower part of the column will slide up, off the rack and can be moved aside.
Master spline, so only one way to refit.
Should use a new bolt, it is a grade 10, so will need to order from your dealer, as ordinary bolts are only grade 8.8.
Torque is 33Nm / 24lbf ft. Getting a torque wrench in there is difficult, so just tight!

My original bolts showed signs of distress on the threads, so the advice about do not re-use is best followed.

Thanks Portland Bill for your post and pictures. I'm at present trying to sort out the farther in laws. Done every single electrical test I can think of to eliminate any other possible cause and ended up (in my opinion) the thermal fuse. When I located the resistor my next thought was "No Way, Ah..Ah" farther in law will be cold this winter. But your photos have shown me a way I missed. Thanks

less than 5 minutes with a flexi drive and a bit of string


I took one out for fun. just to see what all the fuss was about


look through my posts I posted a photo of the setup I used


no need to undo anything else

here


https://www.fiatforum.com/panda/475946-impossible-access-heater-fan-resistor-4.html?p=4529006

You can buy high tensile bolts from fasteners suppliers.

The fan speed resistor is cooled by airflow from the fan. Unfortunately, low speed hits the resistor the hardest and if the cabin filter is old the air flow will be low enough to cook the resistor.

It would benefit from its own little cooling fan, but the wiring is not accessible so good luck with that idea.