Climate control

[ahlinj]

I know how a Climate control and an AC works and the difference. I misspelled a bit in my last post. Wherever AC was metioned it should be Climate control or ACC for those who prefer that acronym. And yes I still believe that the ACC in the ceed is miles away from the ones I have had in other cars. It will be interesting how it holds up in winter when it gets -30 degrees celcius.

[Ex-NISSAN]

Thanks fellas
Tim p and ahlinj, your comments suggest that what I am experiencing is more a design fault than an actual fault. I am used to climate control that you set at say 20 degrees and forget it, summer or winter. On my Ceed I have to have it set at 15.5 to get anything approaching cold air (then not really satisfactory) and on hot days, set it to Lo because I hate hot cars.
I am going to have a word with the dealer to see what they say. Anyone else with A/C problems please contribute.

[tim_p]

15.5?? I can only get cold air by setting to 'Lo'. If I set my Merc to 'Lo' I get penguins turning up in the passenger footwell!!

[Alarmin]

Originally Posted by Ex-NISSAN

Thanks fellas
Tim p and ahlinj, your comments suggest that what I am experiencing is more a design fault than an actual fault. I am used to climate control that you set at say 20 degrees and forget it, summer or winter. On my Ceed I have to have it set at 15.5 to get anything approaching cold air (then not really satisfactory) and on hot days, set it to Lo because I hate hot cars.
I am going to have a word with the dealer to see what they say. Anyone else with A/C problems please contribute.

I would take it to the dealer to get it checked over. On the odd occasion that I use my A/C, I get cold air out at all ranges below 18.5'C

And plenty of it if I turn the fan speed up !!!!

[tim_p]

I did consider getting it checked but then decided against as I had exactly the same thoughts after the 3 day test.
I can live with the issue as I'm sure over the coming months I'll suss out the best way to get whats needed out of the climate control but maybe I need to adjust my perception of what to expect. In my old Vectra (that died to make way for the cee'd !) I could hit the A/C button and get cold air at anytime, summer or winter (70k miles covered). My old TT was similar - select something around 20 degrees and you'd usually get chilled air blowing out of all vents, summer or winter (30k miles covered). The cee'd seems to think that demanding 20 degrees will require warm air, summer (200miles covered!!) Hmmmm...

[sy278]

Originally Posted by Ex-NISSAN

Thanks fellas
Tim p and ahlinj, your comments suggest that what I am experiencing is more a design fault than an actual fault. I am used to climate control that you set at say 20 degrees and forget it, summer or winter. On my Ceed I have to have it set at 15.5 to get anything approaching cold air (then not really satisfactory) and on hot days, set it to Lo because I hate hot cars.
I am going to have a word with the dealer to see what they say. Anyone else with A/C problems please contribute.

It will only generate cold air if the interior temperature is above the set level, and if its not massively above it will only produce cooled air.

[Alarmin]

Originally Posted by sy278

It will only generate cold air if the interior temperature is above the set level, and if its not massively above it will only produce cooled air.

Don't forget, it also looks at the outside air temperature, I don't know what values the PID controller is set at, but I am assuming there would be a 'low limit' temperature to 'hold off ' the air con, along with a 'deadband' to stop the unit constantly switching from heating - cooling. Also remember the unit is trying to control the humidity as well (the temp sensor & humidity sensor are both behind the slotted vent to the left of the steering column). I can only presume that the unit is set to control the humidity at 50%RH as there is no adjustment.

It has been a bit 'warmer' here today, 23'C, so I put my Air Con on fully Auto, set the temp to 18'C and it cooled the car within a few minutes, I had to turn it up as I was getting a 'chill'.

'Comfort' level (UK) is 20'C and 50%RH, and the Cee'd will control at that no problem.

BTW, I am a HVAC controls engineer.

[tim_p]

<I know this is gonna come across as negative but...>
Just got back from a weekend away, up and down the M3, hot days 20-24 degrees and I can only say that the air con / climate is utterly carp!
Only way to get it comfortable was to set it at 'Lo' but with the fan turned right down. Anything else and the car was basically unpleasant and hot. I'd expect to be able to put it on say 18 and it should be able to cope with that. At 18 I'd expect to feel chilly after a few minutes and to need to turn it up - some hope!
Any suggestions Alarmin, how I could test it to be able to go to the dealer and be confident he will hear what I'm saying. I'll try it with a thermometer tomorrow I guess.
Previous cars let you set it at say 20 and it stays comfortable and doesn't vary - that shouldn't be asking too much of this car shirley.

[Alarmin]

Hi Tim,

From the sound of it, your AC is not operating correctly.

I just did a Home to Birmingham & back trip today, about 230 miles round trip. It was about 20'C (outside)(much hotter inside) on the way back, so I put the AC on, set at 19'C and after a short while the temp dropped and the fan speed slowed down, so I then just turned the AC off.

When I first got the car, I did a hygrometer test on it, and set at 'lo' the temp at the vent dropped to a tad over 10'C with at the time, 57%RH.

I should get it into the dealers to get them to check it.

*just a thought* when you have had your AC on, have you let the car idle and had a look to see if you get any 'condense drain' on the floor?

[Alarmin]

ps...

I reset the 'trip' at the start of the journey, the round trip returned at 56mpg, (well pleased)