Dual Climate Problem- Need Advice

[mrgaboj]

hi
I mainly question, because I have exhausted all options
I have a Citroen C5 2.0 HDI 2006

The main problem is two-zone air conditioning
and before you proceed me to browse the forum, let's just say in my defense that I have known this is a problem in the Citroen C5.

as you can imagine the passenger side - cooling does not work.
and I removed the drawer

- Engine flap is functioning
- Fuses are all running - check under the steering wheel and in the engine compartment.
- Plastic gears on the engine, the groove of the flaps and the interface are not damaged
- Flaps after examining is not broken, because when moving sound is heard when it comes from one position to another, I also tested by blowing. The car was hot and the ambient temperature was 19 ° C, and so when I lift and decrease the temperature of the switch, it also showed on blowing checked with a thermometer.
problem is  in the activation of air conditioning
so please if anyone could explain a little more,about this principle of activation

[coastline taxis]

As in it dosnt blow cold or it dosnt blow any air out

[paul.h]

Does the cabin fan work ? If this is not running the air con will not work.

Does the engine radiator fan work ? This will run when the air con is running.

Next, if these work is the air conditioning not cooling down much, if at all ?

Can you hear the air conditioning compressor clutch clicking in when the air con is switched on ?

 

At the age of the car it is probable the refrigerant gas needs recharging since it gradually leaks out until there is not enough left and then the pressure is too low. There is a low pressure switch on the refrigerant that prevents the compressor working so it does not become damaged. I had to have the refrigerant recharged on our 2004 C5 when it was about 7 years old and also on our 2007 C5 when that was also about 7 years old. On these the air con worked but not well enough to cool both sides of the car. This is from the C5 Common Problems topic:

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10. The air conditioning only gives cold air at one side or does not cool much.

The evaporator matrix cooling the air on the C5 is long and if the amount of refrigerant is low then there will not be enough to cool all the matrix for both sides of the cabin. First step should be a regass then if that does not work and there are no leaks then look at replacing the air flap control motors. A regass may be about £50, a flap new motor about £60. It could also be damage to the air flap shaft motor fitting - see this post http://www.citroen-o...c5-2002-aircon/ . I had to have both C5s regassed when about 7 years old, on the second one there was a printout that showed there was only 93 g of refrigerant left and that 525 g were put back in yet the air con was working and gas could be heard going through the pressure control valve but the air was not cooling much.

 

Also have a look at this topic for a possible fix to a broken heater flap connection http://www.citroen-o...or-air-bag-ecu/

 

Have a look at this topic for alternative ways to fix the broken flap connection by extending the motor spindle using one from another motor or buying a motor already with an extended spindle http://www.citroen-o...ulation-aircon/

 

Have a look at this topic for a case where a new comms 2000 unit fixed the manual air con not working http://www.citroen-o...-manual-aircon/

 

In the May 2015 Car Mechanics magazine there is an excellent article by Rob Marshall where he dismantles a 2004 to 2008 C5 heating system with climate control to replace broken heater flaps (the shaft on one had broken completely and the other was breaking). This involves removing the dash and then the heater unit from the car and then fitting new flaps from a dealer (6480E3 for dual zone and 6480E4 for mono system, both £58.53). There are 63 photos showing all the steps.

[mrgaboj]

hi guys tnx for quick response ,but first let me apologize for a delay response I've been working this weekend for 12-14 h.

yes it does blow at all speed but only ambient temp. and heated air. it does mix temp.

and as i remember i didn't recharge for 5y when i change the cooler.

i may just do that fill the gas.

ill keep you posted

best regards. mrgaboj