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tom.tom



Member Since: 04 Feb 2018
Location: Greater Manchester
Posts: 48

United Kingdom 
Blowing hot and cold

Hey folks

Hope someone can help with this intermittent fault that has very recently started...

This time of year nearly Always have the Heater cranked up on both sides (and the heated drivers seat on) in my 07 SE auto

This past week the passenger side heater has been fine and constant as it should be, however the drivers side has started to cycle between hot (as it should be) to cold then warm to hot again and is only on the drivers side. So 2 seconds cold, 2 seconds warm, 2 seconds hot and then this cycle repeats but only on the drivers side, like I said this has just started happening this week and some times it works fine as it should with the temp being constant but it seems like its starting to become more frequent. Has anyone else had this happen, or do we have any ideas what it is or how it can be sorted?

Thanks in advance

Tom

Post #364097 19th Jan 2019 12:06 am
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jules



Member Since: 13 Dec 2007
Location: The Wilds of Warwickshire
Posts: 5001

United Kingdom 2014 Freelander 2 SD4 SE Auto Firenze Red

There are over 130 pages about the heating system in the downloadable workshop manual. To me it sounds like a problem with the vent "door" actuators. But its a bit of a guess as Ive never had to work on the FL's heating system. It looks a pain to get at and, according to the manual, the blower motor needs special tools to remove it. Jules

Post #364111 19th Jan 2019 11:05 am
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Vanny



Member Since: 06 Dec 2015
Location: Cheshire
Posts: 437

United Kingdom 2013 Freelander 2 SD4 XS Auto Santorini Black
Re: Blowing hot and cold

tom.tom wrote:
So 2 seconds cold, 2 seconds warm, 2 seconds hot and then this cycle repeats but only on the drivers side,


What you describe is, as Jules suggests, the temperature 'flap motor' running between one full end of travel and the other, trying to find the end position. I would suggest either the door is blocked (something has dropped in or built up) or the motor its self is becoming faulty. Either way, this is likely going to need the dash and the HVAC out of the car to diagnose correctly.

On the occasions its works normally, its probably not as cold/warm outside so isn't having to move the door to the full range of travel and doesn't hit the blockage/end stop. You could try starting with a lower temperature target and slowly moving up, but this will mean remembering to set the temperature setting low when you get out of the car.

Post #364113 19th Jan 2019 11:48 am
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tom.tom



Member Since: 04 Feb 2018
Location: Greater Manchester
Posts: 48

United Kingdom 

Thanks fJules / Vanny! Will give the gradual cold to hot trick a go and will let you know

In the mean time if any one has had this or any more ideas / suggestions will be gladly welcome Smile

Post #364124 19th Jan 2019 3:35 pm
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