FAN NOT COMING ON

2004 Citroen C3

Tiny

johnsiddle

May, 27, 2010 AT 10:37 AM

Heater problem
2004 Citroen C3 4 cyl Two Wheel Drive Manual 65000 miles

This car has a digital Air Con system.
It is the 1.4HDi Exclusive.

Although the display shows the blower is on the motor does not start.

I have removed the digital rheostat and shorted across the the live points of the power transistor and the motor runs.

I have removed the power transistor to test it but I am unable to find any specs for it. I am not sure if it is blown or not.
Does anyone know of a replacement for this transistor?
Or any other idea's maybe its not blown but the fault lies elsewhere.
Regards John

FOUND 50469 RELATED QUESTIONS

5 Answers

Tiny

Dave H

May, 30, 2010 AT 7:39 AM

I would replace the resistor with new

Tiny

johnsiddle

June, 19, 2010 AT 5:54 AM

Hi Guy's
I finally sorted it by process of elimination
The Power Transistor is an N Channel Mosfet.
I replaced it with a IRFZ48NPBF RS part number 540-9957 cost about 1.50 this one is able to switch 62amps instantainious so should be well up to the job

I hope this will be of use to others.
John

Tiny

johnsiddle

June, 19, 2010 AT 5:57 AM

A new Digital Speed controller/climate controller (its not a resistor) costs about 60 on fleebay.
The mosfet I finally fitted cost about 1.50

If you can un/solder its a no brainer.
Regards John

Tiny

murisaga

November, 7, 2010 AT 2:50 AM

@johnsiddle

Hi,
I have the exact same car (only from 2002) and the exact same problem : -)

Where is this " fan speed controller" located? I also want to replace the MOSFET.

Thanks,
Muris

Tiny

fshenassa@hotmail.com

February, 11, 2011 AT 12:07 PM

Well done john, I admire when someone manages to find a simple cheap fix for something that otherwise would have cost an arm and a leg, and probably not as good.
I too have problem with C3 heater which you resolved, can you please tell me where the transistor to be replaced is located.
I am in UK, but do not think C3 will be any different over here.

Thanks

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