Heater control issue....

[Gozzy]

Hi,

I retrofitted air con early this year but now its getting colder I've noticed no real heat coming from the air vents.

I've tested with VCDS and it seems like the climate control module isn't sending the correct specified output to turn the heat on full.
I've done a recirculation flap alignment and basic settings a few times and when it's doing the test its fully working and I get heat. I can also see the temp flap actuator moving to its highest and lowest settings so it seems like the wiring/component is fine.

I'm pretty sure the issue started after I installed the aircon.

If I view the live data the specified value only goes to 145 (the max hot setting is 225) so its as if the CCM isnt sending the correct info.
The only thing I can think of is coding but there doesnt seem to be any codes or adaptations that can be applied?

My CCM is:

Address 08: Auto HVAC
Control Module Part Number: 1K0 820 047 FT
Component and/or Version: Climatic PQ35 141 0909
Software Coding:
Work Shop Code: WSC 00000
VCID: 7BA3E4538FEFC5925A9-802E

Advanced Identification
Serial number: 00000000000000
Identification: BHB-001
Revision: 00141027
Date: 18.05.07
Test stand number: 0110
Manufacturer number: 0074
Flash Status
Programming Attempts: 0
Successful Attempts: 0
Programming Status: 00000000
Required Conditions: 00000000
Flash Tool Code: 00000 000 00000
Flash Date: --.--.--
Misc.
Hardware number: 1K0 820 047 FT
VCDS Info:
VCID: 7BA3E4538FEFC5925A9-802E
Labels: 1K0-820-047.lbl

 

[Uwe]

I retrofitted air con early this year

Context thread:

2006 Caddy BST SDI AirCon Retrofit

Hi, I've just purchased a new ross-tech cable to try an fix an issue I have with the radiator fans on my Caddy. Bit of a long story for my first post sorry :) I've retrofitted air con into my Caddy which consisted of a new heater box, radiator with dual fans, climate control unit, ac...

forums.ross-tech.com

-Uwe-

 

[Sebastian]

What made you choose this specific Climate Control Unit? Some brief research revealed 1K0 820 047 FT being from a Passat and not necessarily Caddy compatible. Since these model specific parameters are hard coded as part of the parametrization, you may need to replace this with a proper part.

 

[Gozzy]

Thanks for the reply. I got it second hand along with a Touran dash so assumed it was from a Touran.

Do you know which part number I would need, my ac is relay controlled so it's not a modern dual control one?

Ive noticed that some have an econ button and others have an a/c button so maybe I need econ instead of ac?

Thanks

 

[Sebastian]

The problem with retrofits and used parts is, you really need to check compatibility with your specific build date/range. I would not pull the trigger on purchasing one right away, though checking compatibility should be done.

The heater box etc. are all parts that came with the Touran dash? So theoretically they should be a match? Which parts did you source elsewhere?

 

[Gozzy]

The dash, heater box, ccm etc are all supposedly from a Touran but theres no way of knowing for sure I guess. I was told the same units were in all care the only difference are some are climatic and some climatronic.

I've just found this info here https://forums.ross-tech.com/index.php?threads/2771/

This user has a golf 2007

Address 08: Auto HVAC Labels: 1K0-820-047.lbl
Part No SW: 1K0 820 047 FT HW: 1K0 820 047 FT
Component: Climatic PQ35 141 0909
Revision: 00141027 Serial number: 00000000000000
Shop #: WSC 00000 000 00000
VCID: 7BFE17C63ABFEFF93BD-802E

This is mine:
Address 08: Auto HVAC Labels: 1K0-820-047.lbl
Part No SW: 1K0 820 047 FT HW: 1K0 820 047 FT
Component: Climatic PQ35 141 0909
Revision: 00141027 Serial number: 00000000000000
Shop #: WSC 00000 000 00000
VCID: 7BA3E4538FEFC5925A9-802E