Interior fan control knob is stuck and I can't move it

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My Name: Missing Lincs

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Model: C3 2002-2005, Original shape model
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Gently release the white clip (part of the control unit) which holds the black plastic collar near the end of the cable. This will free the outer part of the cable. You should then be able to unhook the inner metal part from the tab.
If at first you don't succeed, destroy all the evidence and pretend you never tried :lol:
My Name: midiman

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Model: C3 2002-2005, Original shape model
Year: 2003 (03)
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Mileage: 141000
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Hi,

I managed to get the cables off and I stated to explore the unit.

To my shock I noticed that there must have been a small fire or overload in the unit.
hcumelt.jpg
It appears that it melted the inside of the switch and when the plastic cooled it set.

So that was why I couldn't move it.

Now I have a problem trying to find an exact replacement part.
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My Name: C3driver52

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Now I have a problem trying to find an exact replacement part.
there are quite a few on ebay (here)

But it would be worth finding out why yours caught on fire, as you may just smoke another one if the blower motor has shorted out (or something to that effect).
My Name: midiman

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Posts: 70
Joined: Sun Sep 08, 2013 9:26 am
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 141000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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How can I test to see if the blower motor has blown?

Thanks
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My Name: C3driver52

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Model: C3 2002-2005, Original shape model
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Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
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Engine name: TU3 (75 PS)
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How can I test to see if the blower motor has blown?
You could measure is resistance, or just try to power it up from a 12v source and see if it smokes.


From your picture you uploaded its possible to see 2 distinct burnt tracks in the plastic:
melted heater control stuck and won't turn on Citroen C3
melted heater control stuck and won't turn on Citroen C3
I would look to see which wire colours and pin location on the plugs lead to those burnt bits, cross reference the wire colours to the diagram in Haynes to see what those wires connected to. Then look at those parts ;)
My Name: midiman

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Posts: 70
Joined: Sun Sep 08, 2013 9:26 am
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 141000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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Hi,

I've ordered that Haynes manual and I will have to wait for it to come.

I've got nothing to refer to so I'm stuck until it arrives.

I need to know where the fan motor is located and how everything operates.

Sh*t happens but I,m glad it happened when it's not to hot or cold lol.

But I need to get this fixed asap. :|
My Name: Missing Lincs

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Joined: Mon Mar 05, 2012 9:29 pm
Model: C3 2002-2005, Original shape model
Year: 2004 (04)
Engine Size: 1.1
Fuel Type: Petrol
Trim Level: Desire
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
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According to the diagrams I have, there is no direct connection between the heater fan and the control panel. The controls feed signals to the BSI which in turn sends signals to the aircon controller and this switches the fan.

Looking at your pictures, your switch appears to have handled some serious current, on that basis I would look further into the circuitry before relying on what I say above, I wonder if your model is quite early, possibly before electronic fan control came about on the C3.

Looking at the connectors on the back of your panel, are there any wires that look like they are meant to handle higher currents - 2/3mm diameter wires, or do they all look like smaller signal wires - 1mm diameter?

Its important to sort the mode of operation out, no point testing the fan if the switch doesn't actually control it directly.
If at first you don't succeed, destroy all the evidence and pretend you never tried :lol:
My Name: midiman

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Posts: 70
Joined: Sun Sep 08, 2013 9:26 am
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 141000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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Hi,

I have no idea. This have probably been in the car since new.

I need to look at the book to get some idea about it.

As far as I'm aware the connector that was plugged into the back is the one that's supposed to be there.

I've had the car for over 2yrs and I've never had an problems like this before.
My Name: Missing Lincs

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Joined: Mon Mar 05, 2012 9:29 pm
Model: C3 2002-2005, Original shape model
Year: 2004 (04)
Engine Size: 1.1
Fuel Type: Petrol
Trim Level: Desire
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Location: United Kingdom
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Can you post a photo of the wiring connector that was plugged into the back of the control panel?
If at first you don't succeed, destroy all the evidence and pretend you never tried :lol:
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My Name: C3CAR

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Fuel Type: Diesel
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DPF: No
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Missing Lincs wrote:According to the diagrams I have, there is no direct connection between the heater fan and the control panel.
Its a 2002 diesel with air con (not climate control). A/C control panel feeds Heater blower motor on pin A4 - Black wire - direct, and the heater resistor pack also connects to the A/C control panel on A1 (brown), A3 (white) ,A2 (orange) and A5 (purple).
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