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Nelson211005



Member Since: 02 May 2025
Location: Scotland
Posts: 2
United Kingdom 2016 Defender 90 Puma 2.2 SW Montalcino Red
Puma aircon puzzle
I have an "interesting" problem with the aircon on my Puma 2.2.
When the aircon button is pressed in (and lights up) the fan comes on at low speed regardless of where the speed contoller is positioned and there is no cold air circulating. Also no sign of engine revs changing.
Spinning the fan speed controller does nothing also.
I have checked the fuse R28 and it appears to be fine although I will replace it once I receive some new ones just in case it is giving no power.
Has anybody suffered this type of problem before ? Any pointers gratefully received.
Post #1066795 2nd May 2025 5:51am
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5922
2006 Defender 110 Td5 USW Zermatt Silver
Do you know if it has gas in the system? Or if/when you’ve have it regassed
Post #1066805 2nd May 2025 8:36am
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Nelson211005



Member Since: 02 May 2025
Location: Scotland
Posts: 2
United Kingdom 2016 Defender 90 Puma 2.2 SW Montalcino Red
Sorry, have no idea about gas levels and as far as I know it has never been re-gassed but couldn't swear to that.
It just seemed strange that when the aircon button was activated the fan was on low speed regardless of whether the speed dial was on 0,1,2 or 3, which seems to point to a fuse/relay or both perhaps.
Once my new fuses arrive I will swap out R28 just in case, then if no joy I'll try to get the problem diagnosed - all this is way beyond my skill set !!!!!
Thank you for your help.
Post #1066813 2nd May 2025 9:31am
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90 Dreamer



Member Since: 13 Jul 2019
Location: Oop North
Posts: 2235
United Kingdom 2016 Defender 90 Puma 2.2 HT Corris Grey
fairly sure mine has always done that......2016 XSi
Post #1066817 2nd May 2025 9:55am
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Johan_B



Member Since: 20 Sep 2024
Location: Gothenburg
Posts: 77
Sweden 2008 Defender 110 Puma 2.4 CSW Tonga Green
The coupé fan will always be on when A/C is activated. This is to prevent freezing in the heater matrix.
Post #1066818 2nd May 2025 9:55am
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Linds Hanson



Member Since: 16 Jan 2021
Location: Cornwall
Posts: 521
United Kingdom 
The fan runs slow whenever the AC switch is pressed but should speed up once speed 2 or 3 is selected.
Post #1066824 2nd May 2025 11:24am
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