DEFENDER2.NET - View topic - Under-dash (aircon) fan lost speed I and II, III still ok

↓ Advertise on Defender2 ↓

Home · FAQ · New Posts · My Posts · PMs · Search · Members · Map · Calendar · Profile · Donate · Register · Log In

Home > Td5 > Under-dash (aircon) fan lost speed I and II, III still ok

Page 1 of 1

Print this entire topic ·

RoadForce

Member Since: 17 Jul 2014
Location: Holland
Posts: 335

2000 Defender 130 Td5 HCPU Coniston Green

Under-dash (aircon) fan lost speed I and II, III still ok

Hi, last week or so, I lost speed I and II on my under-dash fan (a.k.a. aircon). Note that speed III (hurricane setting, at least in terms of noise...) still works, and the cooling part of the A/C also seems to be working fine. Since this is not a total loss of the fan function, I suspect it's not a blown fuse but the switch itself? Is this a known issue with typically an easy fix?

In case of any confusion, I am referring to the rotary switch that controls the fan speed, not the A/C, as in the image below:

Defender 130 HCPU Td5 MY2000

6th Sep 2022 11:29am

Penfold_6290

Member Since: 22 Sep 2021
Location: Dorset
Posts: 319

Sounds highly likely that the resistors have gone on the blower motor. Only on speed 3 does the full current flow from the motor to the switch, in positions 1 and 2 current flows via resistors and hence the lower speeds. I'm not sure for certain but I think the resistors are nestled nice and tight on the motor in the passenger footwell, really hard to get to. The part number you need is JGM100130, item 5 in the pic below

Good luck!

Click image to enlarge

6th Sep 2022 12:43pm

RoadForce

Member Since: 17 Jul 2014
Location: Holland
Posts: 335

thanks a lot for th einfo, but

if it's indeed hard to get to

. Do you think this can be fixed in-situ or will I need to bleed/empty the A/C and remove the entire unit to get access? Defender 130 HCPU Td5 MY2000

6th Sep 2022 3:19pm

Penfold_6290

Member Since: 22 Sep 2021
Location: Dorset
Posts: 319

I just had a good rummage in the footwell of mine...impossible to get to, the unit will have to come out I'm afraid.

6th Sep 2022 3:23pm

RoadForce

Member Since: 17 Jul 2014
Location: Holland
Posts: 335

Of course it has to

Nothing is ever easy, is it?

Thanks for the info though, much appreciated and I learned something new today about how heater fans work

Defender 130 HCPU Td5 MY2000

6th Sep 2022 3:31pm

Penfold_6290

Member Since: 22 Sep 2021
Location: Dorset
Posts: 319

Me too! I thought LR would do it the easy way and fit the resistors in the switch which is easy to get to, but oh no...they thought better!

6th Sep 2022 3:32pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17422

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

The resistors get hot so are placed near the fan for a bit of cooling.

6th Sep 2022 6:20pm

Penfold_6290

Member Since: 22 Sep 2021
Location: Dorset
Posts: 319

You'd have thought there was enough cooled, ducted air in that system that the resistors could be placed somewhere more convenient. Just below my left knee would be a perfect spot, consistently at or around 10 degrees C!

6th Sep 2022 9:29pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17422

I'm not sure the designers did "convenience"! In fact I'm not sure "thought" was.involved in the design process.

6th Sep 2022 10:06pm

Page 1 of 1

All times are GMT

Jump to

< Previous Topic | Next Topic >

Posting Rules

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum