Air Blower

[RobH]

I have a 2002 C5 SX 2.2 which has done just over 43000 miles.

This morning, after not moving the car for 3 days, I found that I have no air blower.

 

On startup the LCD display shows the fan at its previous setting but within 30 seconds the display shows as though I have turned the fan off. I cannot alter this usingeither the Auto button or by manually pressing the fan switch.

After startup I can press the fan switch and it shows on the display as speeding up but there is no air flow.

I can adjust both sides of the climate control and can feel te temperature differance, I can also adjust the direction of airflow (screen, feet etc).

The aircon button does not work nor does the windscreen clear.

 

Any help would be gratefully appreciated.

 

I have checked 3 fuses, 2 in glove box and one in engine bay.

 

Thanks

 

Rob

[paul.h]

On all the cars I have had with air con, it did not work without the blower running so the C5 is probably also designed this way. So need to sort the blower first before worrying about the air con.

[Malcolm]

I have a 2002 C5 SX 2.2 which has done just over 43000 miles.

This morning, after not moving the car for 3 days, I found that I have no air blower.

 

On startup the LCD display shows the fan at its previous setting but within 30 seconds the display shows as though I have turned the fan off. I cannot alter this usingeither the Auto button or by manually pressing the fan switch.

After startup I can press the fan switch and it shows on the display as speeding up but there is no air flow.

I can adjust both sides of the climate control and can feel te temperature differance, I can also adjust the direction of airflow (screen, feet etc).

The aircon button does not work nor does the windscreen clear.

 

Any help would be gratefully appreciated.

 

I have checked 3 fuses, 2 in glove box and one in engine bay.

 

Thanks

Hi Rob. You and I have the same cars with the same problem. I have checked out the blower on mine by removing the plug in the side of the motor and wiring it directly to a 12volt supply. It works perfectly. So I deduced from that that it must be an electronic fault. A friend of mine says it may be a speed control resistor that has gone down. This is not a normal resistor but one that switches on and off very quickly to control the blower speed. The blower runs through a 40amp fuse and as I found out when testing they use a lot of power which is why they do not use a conventional resistor as it would generate a huge amount of heat. I'm going to have a look at my car tomorrow and see if I can find this resistor and work out a way of testing and if it proves faulty try and buy a new one. I'll let you know how I get on. Malcolm

 

Rob

[shallishanti?]

Switches on and off very quickly? Doubt it. They're normally an array of high wattage resistor to drop the voltage to the motor to decrease speed - the motor runs flat out for the the given volts it gets.

 

Even if the resistor pack has failed most designs will allow full voltage to the motor via the full speed setting........of course, Citroen could be different.

 

Most designs incorporate a fuse, often a board mounted component, which means that the whole pack has to be changed.

[Malcolm]

Switches on and off very quickly? Doubt it. They're normally an array of high wattage resistor to drop the voltage to the motor to decrease speed - the motor runs flat out for the the given volts it gets.

 

Even if the resistor pack has failed most designs will allow full voltage to the motor via the full speed setting........of course, Citroen could be different.

 

Most designs incorporate a fuse, often a board mounted component, which means that the whole pack has to be changed.

Hi Rob. Well after a bit of searching I found the resistor. It's located on the r/h side of the heater down near the floor just to the left of the steering column. It's held in place by 2 screws and has 2 green plugs in it with a total of 6 wires. A red and a black are the live supply. Another red and black go to the fan motor and there are 2 control wires coming down from the heating and climate control buttons. Removing the unit and bridging the heavy red and black wires turns the fan on at full speed. I've checked the 2 control wires and depending on the fan speed setting you get a reading varying between 4.5 kohms to 155 kohms. I'm assured this is about what I should expect so I've come to the conclusion the resistor unit is faulty. I contacted a Ctroen spares department and they are just under £50 so I will be buying one either tomorrow or Monday. I'll you know if my conclusions are right. Malcolm

[Malcolm]

Hi Rob. Well after a bit of searching I found the resistor. It's located on the r/h side of the heater down near the floor just to the left of the steering column. It's held in place by 2 screws and has 2 green plugs in it with a total of 6 wires. A red and a black are the live supply. Another red and black go to the fan motor and there are 2 control wires coming down from the heating and climate control buttons. Removing the unit and bridging the heavy red and black wires turns the fan on at full speed. I've checked the 2 control wires and depending on the fan speed setting you get a reading varying between 4.5 kohms to 155 kohms. I'm assured this is about what I should expect so I've come to the conclusion the resistor unit is faulty. I contacted a Ctroen spares department and they are just under £50 so I will be buying one either tomorrow or Monday. I'll you know if my conclusions are right. Malcolm

Hi Rob I bought and fitted the new resistor unit and hey presto! it's all working perfectly. Just to recap my car is a 2002 2.2 hdi with climate control. The part number for the control unit is 6441L2 and it cost me £41.68 plus VAT = 48.97. I assume your car also has climate control. The unit for a car with just air conditioning is different and only costs about £15. If I can be of any more help let me know. Regards. Malcolm

[frenchie]

Hi Rob I bought and fitted the new resistor unit and hey presto! it's all working perfectly. Just to recap my car is a 2002 2.2 hdi with climate control. The part number for the control unit is 6441L2 and it cost me £41.68 plus VAT = 48.97. I assume your car also has climate control. The unit for a car with just air conditioning is different and only costs about £15. If I can be of any more help let me know. Regards. Malcolm

 

I have just bought a september 2002 C5 2.0 HDi Pack manual gearbox, left hand drive.

What is the difference between climate control and air conditioning?

If my other half had not left the neat little case containing all the handbooks on the roof of the car before driving off, I could possibly answer that myself.

This will undoubtedly be the first of many questions as we are similar in many ways to Laurel and Hardy

Thanks

[citroeneddie]

This will undoubtedly be the first of many questions as we are similar in many ways to Laurel and Hardy

 

Welcome to the Forum Fenchie

 

Thats another fine mess youve got us into lol :lol:

[paul.h]

With climate control you can set the temperature and this is achieved automatically. With air conditioning you adjust the warm air yourself.

[fiatman]

My wife has a 2003 2.2 C5 with climate control and has the same problem as Malcolm all the fuses ok and no blower, contacted the main dealer today to order the module no 6441L2 and was told that he sells about 2 to 3 a month so this is obviously a recognised problem within the dealer network. Ordered mine today hope to have it next week, thanks to Malcolm for your help :)

[old'uns]

if you can get the top screw back in ok you can come round and do mine!

gave up after 10 mins!, 1 screw holds it ok

[Guest kenc5]

Hi Rob I bought and fitted the new resistor unit and hey presto! it's all working perfectly. Just to recap my car is a 2002 2.2 hdi with climate control. The part number for the control unit is 6441L2 and it cost me £41.68 plus VAT = 48.97. I assume your car also has climate control. The unit for a car with just air conditioning is different and only costs about £15. If I can be of any more help let me know. Regards. Malcolm

Hi Rob&Malcolm. I had same problem with air blower fitted new unit 6441L2 and cured it, seems to be a common fault my car is a C5 2.0 HDI SX 2002 52 REG with climate control. Thanks for the information kenc5 :rolleyes:

[Guest Chris K]

Hi Rob&Malcolm. I had same problem with air blower fitted new unit 6441L2 and cured it, seems to be a common fault my car is a C5 2.0 HDI SX 2002 52 REG with climate control. Thanks for the information

I too have a C5 2.0 HDI SX 2002 52 REG with the same problem. I contacted Citroen and gave my license plate number and the part number, they said that it is the wrong part and I need 6451MA ...with a price tag of over £450!!!!!!!! They also said that it needs to be programmed to the car - which I am sure the dealers would love to charge extra for.

I have tried to locate this unit but have not been very successful (tinkering with cars is not my thing). I have attempted to remove the plastic 'casing' to the left of the steering wheel but can only remove one small section by removing a retaining screw - this is sandwiched against another section which then goes to the complete section leading to the handbrake - am I looking in the wrong place? (I get the impression that everybody else locates this unit easily - sorry for being a complete idiot!)

If I get a Haynes Manual, will it give me step by step instructions on dismantling the plastic covers/tell me where to find the controller???

!!!!!Please help, this car is starting to cost a fortune to keep on the road!!!! :(

Regards

Chris

[podpeeze]

You just got to love this forum!!! :blink:

The wife's HDI Exclusive has the same problem - so I will head to my friendly dealer and order the part.

Thanks to all for the info - much appreciated!

 

Jon

[podpeeze]

Well I'll be blowed. (sorry) Two weeks she's gone without a blower and suddenly its come back to life!

I'll see how long it lasts this time.

 

Jon

[psincock]

Hi Guys

 

Just bought a 52 plate 2.0 HDI Exclusive 2 weeks ago. Coldest morning of the winter so far (-7) and blow me mine has done the same. Got 3 months warranty with the car. Do you think i should just put my hand in my pocket or claim ?

 

 

Pete

 

:angry:

[old'uns]

Hi Guys

 

Just bought a 52 plate 2.0 HDI Exclusive 2 weeks ago. Coldest morning of the winter so far (-7) and blow me mine has done the same. Got 3 months warranty with the car. Do you think i should just put my hand in my pocket or claim ?

Pete

 

:huh:

 

if its the resistor, most common prob, then just pay yourself, £50 for part? excess on policy?

prob take half hour tops to fit

[Guest dugzin]

I too have a C5 2.0 HDI SX 2002 52 REG with the same problem. I contacted Citroen and gave my license plate number and the part number, they said that it is the wrong part and I need 6451MA ...with a price tag of over £450!!!!!!!! They also said that it needs to be programmed to the car - which I am sure the dealers would love to charge extra for.

I have tried to locate this unit but have not been very successful (tinkering with cars is not my thing). I have attempted to remove the plastic 'casing' to the left of the steering wheel but can only remove one small section by removing a retaining screw - this is sandwiched against another section which then goes to the complete section leading to the handbrake - am I looking in the wrong place? (I get the impression that everybody else locates this unit easily - sorry for being a complete idiot!)

If I get a Haynes Manual, will it give me step by step instructions on dismantling the plastic covers/tell me where to find the controller???

!!!!!Please help, this car is starting to cost a fortune to keep on the road!!!! :)

Regards

Chris

Sorry to say this but Haynes don't list one yet. There is a French manual but couldn't tell you what it's called.