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[Beconboy]

got problem with climate control on car . right from 18 c to 27 c no warm air comeing through but put on hi hot air on lo cold air as should be any ideas wots up with it thanks

[Matchless]

Might be the air sampling fan not spinning as max hot or cold over-rides the temp sensor. if fan isnt working then the sensor heats up from panel lamps etc and climate panel thinks the cabin is hot.

First though...reset the servos by holding auto and off down together for 5 secs or so until you hear motors whirring, if no better hold a smoking match or cig near the little grill in the centre of the panel, smoke should be drawn in if fan is working.

[Beconboy]

thanks for advice tried reset that sonded as normal will try other tomorra

[amba]

Assuming you have reset the servos and they are working correctly,how do you go on about checking to see if the sampler fan is working.If it makes no difference with the "smoke test"how do you know if it is or i,snt working corrctly and after that how do you repair or replace it?

[MutantCav]

Heater Bypass Valve??

[amba]

Doesn,t the HBV just ensure heat or no heat..not a differential over temperature,so replacing HBV would cure lack of temperature control ??

[mark.adams]

If it blows hot on Hi, i would say it can't be the HBV thats at fault.

[Beconboy]

cheers for all the answers but now sorted
                            

                                cheers to all of you

[alank46]

cheers for all the answers but now sorted :

How was it sorted as I have a similar problem.
Thanks
Alan

[Beconboy]

tried resetting again and it all came back on and now works a1

[HerefordElite]

Assuming you have reset the servos and they are working correctly,how do you go on about checking to see if the sampler fan is working.If it makes no difference with the "smoke test"how do you know if it is or i,snt working corrctly and after that how do you repair or replace it?

I've given up smoking so I used a piece of tissue paper  

Should the sampler fan be constantly running and should it sound like a chinook taking off :question

[amba]

My sampler fan has no impression on tissue/smoke so expect it is goosed..read somewhere that you can get a fan from Maplins and then do some soldering ??
My climate control is either Hot at "hi" or getting cool to cold at 27 or below.