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Discussion Starter #1
Hi, we're looking for some help before I give up and head towards an electrician!
Its a 2010 Note, 1.6 Petrol Auto RHD.

I am a little stumped..

So, this is the order of events!

Went to Halfords (oh dear) and got the air con recharged. Worked for a couple of months.
Aircon stopped working, due to finances, left it alone for a while.
The heater fan then packed up.
I replaced the heater control fan resistor module. This got the fan and main heater working again fine but no aircon,
Yesterday. took it to a local garage and got the aircon refilled by the automagic aircon machine. Passed its pressure test but said it was empty so refilled etc.
Still no aircon, they think a broken wire "somewhere" but are unsure, so I have run a few more tests:

Aircon Switch light comes on but compressor dosent kick in.
Put 12v straight to compressor and it runs.
Put a ODBII reader on, no faults.
Checked the 2 x 15Afuses in the car and the one 10A in the engine compartment linked to the aircon.
Set off the built in autotests (ignition on, door switch 10 times, ign off and on - the one that cycles through the wipers, lights, fan, aircon relay etc). The Aircon magnetic clutch can be heard clicking on\off so that appears to be OK.

So feels like something to do with the switch perhaps or <shudder>. the can bus.... Hoping some bright spark may have some more ideas? e.g. Could I have clipped a wire changing the heater resistor, are there any other checks I could make?

Thanks!
 

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Air con is a sealed system that should not be tinkered with unless you are a qualified air coin engineer one type of refrigerant used in air con systems is poisonous and you can be fined if you vent it to the atmosphere.
If i were you i would give Halfrauds a very wide berth and find a dedicated air con specialist and get them to investigate the issue.
They will be fully aware of what they are doing, have all the tools needed and will probably pinpoint the problem in a few minutes. It may cost more than other places but at least you will know that the job has been done right.
 

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Discussion Starter #3
Air con is a sealed system that should not be tinkered with unless you are a qualified air coin engineer one type of refrigerant used in air con systems is poisonous and you can be fined if you vent it to the atmosphere.
If i were you i would give Halfrauds a very wide berth and find a dedicated air con specialist and get them to investigate the issue.
They will be fully aware of what they are doing, have all the tools needed and will probably pinpoint the problem in a few minutes. It may cost more than other places but at least you will know that the job has been done right.
Thanks for taking the time to reply, as per my post however, I am looking for advice on the wiring\electrics\aircon switches not on how to refill it ;)
 

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An air con specialist is still the place to go. They can trace any fault in the system better than any independant garage could. They cost more but are worth it in the long run.
 

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An air con specialist is still the place to go. They can trace any fault in the system better than any independant garage could. They cost more but are worth it in the long run.
Again, thanks for taking the time to reply :) I appreciate your help and I'll be sure to take your advice on board.
 

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Just to recap.
If anyone has any advice (prob the electrical side) of this that I can look at before I give up and either take it to a specialist\auto sparky or just don't bother having aircon.. I currently have little cash, a lot of time, a decent set of tools and a level of common sense :)

To summarize:

The system is gassed - Its been pressure tested and is full
OBDII check shows no errors (I only have the basic bluetooth\dongle setup, not the full blown handset)
The Magnetic clutch engages when the inbuilt self test routines run (IPDM E/R Module)
The Compressor runs when powered direct
The fuses are good
The switch illuminates when pressed but the system dosen't kick in, all other heating controls are good
No other obvious faults with the car

Implies a possible comms issue\CAN type fault? Or, could it be as simple as a nipped wire from when I replaced the fan resistor previously? I'll be taking the dash apart tomorrow to have a poke around and see if I can spot anything obvious anyway so if anyone has any pointers I could perhaps check for whilst I have it all apart then would be appreciated.
Cheers!
 
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