harryrope

Thanks again for the input and apologies for late response....the problem seems to have resolved itself. In Fact, the Aircon has been perfect (until tomorrow of course) although vcds did report some very silly cabin temperatures? Cheers Steve

Checked fans both running start running when AC is switched on Checked the sensor and it is in place

Thanks J.R and Breezy. If I can, I'll check all of the above this afternoon after a drive. Is it worth hooking vcds up whilst on the drive to monitor? Steve

Here is a few tests I ran with vagcom - Sunday,07,May,2023,23:12:03:19273 www.Ross-Tech.com Address 08: Auto HVAC (3T0 907 044 BK) 23:11:48 IDE00198-ENG100282 Refrigerant pressure-MUX Kaeltemitteldruck 9.2 bar IDE00966 Compressor current: actual value 0.820 A IDE00967 Compressor current: specified value 0.820 A IDE00968 Compressor speed 900 /min IDE00969 Compressor load 4.2 Nm IDE00970-ENG103807 Coolant fan activation: actual value-MUX Lueftersteuerung 26.8 % IDE00973-ENG100004 Outside temperature-MUX Temperatur 20.0 °C IDE00974-ENG100004 Outside air temperature internally calculated-MUX Temperatur 18.0 °C IDE00982-ENG103939 Temperature downstream of evaporator-MUX Temperatur nach Verdampfer 26.0 °C IDE00983 Inside temperature 24.2 °C IDE01419 Compressor shut-off condition: last Outside air temperature too low IDE03009 Start process requested System malfunction -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Address 08: Auto HVAC (3T0 907 044 BK) 23:15:59 IDE00198-ENG100282 Refrigerant pressure-MUX Kaeltemitteldruck 9.2 bar IDE00966 Compressor current: actual value 0.820 A IDE00967 Compressor current: specified value 0.820 A IDE00968 Compressor speed 900 /min IDE00969 Compressor load 4.2 Nm IDE00970-ENG103807 Coolant fan activation: actual value-MUX Lueftersteuerung 27.6 % IDE00973-ENG100004 Outside temperature-MUX Temperatur 19.5 °C IDE00974-ENG100004 Outside air temperature internally calculated-MUX Temperatur 18.0 °C IDE00982-ENG103939 Temperature downstream of evaporator-MUX Temperatur nach Verdampfer 26.0 °C IDE00983 Inside temperature 24.5 °C IDE01419 Compressor shut-off condition: last Outside air temperature too low -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Address 08: Auto HVAC (3T0 907 044 BK) 23:16:01 IDE00198-ENG100282 Refrigerant pressure-MUX Kaeltemitteldruck 9.2 bar IDE00966 Compressor current: actual value 0.825 A IDE00967 Compressor current: specified value 0.820 A IDE00968 Compressor speed 900 /min IDE00969 Compressor load 4.0 Nm IDE00970-ENG103807 Coolant fan activation: actual value-MUX Lueftersteuerung 27.6 % IDE00973-ENG100004 Outside temperature-MUX Temperatur 19.5 °C IDE00974-ENG100004 Outside air temperature internally calculated-MUX Temperatur 18.0 °C IDE00982-ENG103939 Temperature downstream of evaporator-MUX Temperatur nach Verdampfer 26.0 °C IDE00983 Inside temperature 24.5 °C IDE01419 Compressor shut-off condition: last Outside air temperature too low -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Address 08: Auto HVAC (3T0 907 044 BK) 23:16:03 IDE00198-ENG100282 Refrigerant pressure-MUX Kaeltemitteldruck 9.0 bar IDE00966 Compressor current: actual value 0.820 A IDE00967 Compressor current: specified value 0.820 A IDE00968 Compressor speed 900 /min IDE00969 Compressor load 4.2 Nm IDE00970-ENG103807 Coolant fan activation: actual value-MUX Lueftersteuerung 27.6 % IDE00973-ENG100004 Outside temperature-MUX Temperatur 19.5 °C IDE00974-ENG100004 Outside air temperature internally calculated-MUX Temperatur 18.0 °C IDE00982-ENG103939 Temperature downstream of evaporator-MUX Temperatur nach Verdampfer 26.0 °C IDE00983 Inside temperature 24.5 °C IDE01419 Compressor shut-off condition: last Outside air temperature too low -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Address 0x08,3T0 907 044 BK,UDS Selective Output Tests,IDE01074-Flap motor for fresh air/recirculation air flow flap

Thanks Breezy Do you mean the engine radiator fans ? If so do I just eye ball them in the engine bay ? It does seem to blow cold when engine temp is normal after a short run - Thanks

Hi, I am sorry to mention Air con - I have a nice cold system for the first few miles on a hot day, but after some time it begins to warm up to a bit and becomes just about the same as no air con. I have vcds but no fault codes have come back on a standard fault scan - would anyone know what tests to run in the hope of finding the problem. Of note, I almost always see large puddles of water underneath the car when its been driven, but have always assumed it to be the condensing process. ? Any ideas or experience of similar faults would be appreciated Steve hvac log.txt

Also just to add, you might notice the temperature on the photo is 19.7 I dont think you usually see the .7 bit. And the photi relates to rear...ahain not usual I believe.

Hold the AC and the screen buttons you get the self check flash similar to holding Ac and front vents... However this screen is not standard and appears to show temperature options and rear vents locked or no lock.

By pressing the AC and Screen button I get an extra screen in the info. Seems to give temperature reading and also relates to rear. Anyone know what can be done with this setting or what it actually is.