Fuel Burning Heater

Mikelsson · Jun 4, 2019

Hello, just got a 2004 Freelander TD4 HSE Auto with an FBH. Is there a way of turning it off. I thought it only worked when the temperature is less than 5 degrees? But it is warmer than that today and it comes on. It is noisy and smelly and presumably uses diesel. Is that correct?
Thanks for your help.

Denboy · Jun 4, 2019

Yes it burns diesel think you can disable it by removal of a fuse

Linford · Jun 4, 2019

Denboy said:
Yes it burns diesel think you can disable it by removal of a fuse

Anyone know which fuse it is and where. I'd like to disable mine to prevent it from coming on.

Fritz · Jun 4, 2019

Hi

It's fuse 5 in the engine bay but I think other stuff may also run through that fuse.

Fritz

Nodge68 · Jun 4, 2019

Mikelsson said:
Is there a way of turning it off.

Yes. Pull fuse 5 in the engine bay fuse box. This is the fuse that feeds the FBH, even though the fuse box kit says F5 is the ECU.

Mikelsson said:
I thought it only worked when the temperature is less than 5 degrees?

It's supposed to work, only when the air temperature is below 5°C, and the engine temperature is under 75°C.

Mikelsson said:
But it is warmer than that today and it comes on.

It most likely that the environment sensor (a 5°C thermostat) is fault.

Mikelsson said:
It is noisy and smelly and presumably uses diesel

It will use approximately 1/2 a litre of diesel per hour. But will stop using fuel, when the engine temperature exceeds 75°C. The FBH internal fan will continue to run however.

Mikelsson said:
Is that correct?

Which part are you referring to as being correct?

Colthebrummie · Jun 4, 2019

In what respect is it smelly? Exhaust fumes?

Col

Nodge68 · Jun 4, 2019

Colthebrummie said:
In what respect is it smelly? Exhaust fumes?

Col

If the FBH hasn't been serviced (cleaned of soot), then it can smell pretty unpleasant. If it's been cleaned regularly, then it's flue (It's a tiny oil boiler), smells just like a diesel exhaust.

Mikelsson · Jun 6, 2019

Thanks to everyone for your help. When I said is that correct I meant are my assumptions correct, and when I said "smelly" I mean't it smells of diesel when it's running. Can I confirm that I can remove fuse 5 under the bonnet and it won't affect anything else. The handbook says Fuse 5 runs "Engine management, transmission cooling fan and Fuel burning heater.
If It can be removed can it put back again in the Autumn almost like a switch?
Thanks.

Nodge68 · Jun 6, 2019

Mikelsson said:
Can I confirm that I can remove fuse 5 under the bonnet and it won't affect anything else. The handbook says Fuse 5 runs "Engine management, transmission cooling fan and Fuel burning heater.

You can remove fuse 5 without affecting anything else.

Why not just replace the environment sensor? It's located at the front of the car, RHS of the lower radiator grill.

Mikelsson · Jun 6, 2019

Does the environment sensor have another name, I can't find one.

Nodge68 · Jun 6, 2019

Mikelsson said:
Does the environment sensor have another name, I can't find one.

The part number for the LR version is JWL000020.

Or JWL100030A for the older Rover 75 version. Apparently the LR version is more accurate, but I've not tested it to find out if that's correct.
Hope that helps.

Mikelsson · Jun 6, 2019

Found one thank you. You sound like you know what you're talking about. Can I ask another question. I had a look at the fuses under the bonnet to check where fuse 5 is. Whilst I was there I noticed that fuse 3 is missing. Is that a problem and should I replace it?
Thanks.

Nodge68 · Jun 6, 2019

Mikelsson said:
Whilst I was there I noticed that fuse 3 is missing. Is that a problem and should I replace it?

There's no reason to assume that every fuse position has to be filled on every model of the FL1. My own TD4 auto is missing 1 fuse (I can't remember which one), but I've used the output from the missing fuse, to feed my FBH remote controller.

Ian burritt · Oct 21, 2019

Nodge68 said:
There's no reason to assume that every fuse position has to be filled on every model of the FL1. My own TD4 auto is missing 1 fuse (I can't remember which one), but I've used the output from the missing fuse, to feed my FBH remote controller.

I`ve been scanning through these replies, so thanks Nodge68 seems some of my questions have been answered.. A recent purchase is my 54 plate TD4 auto HSE and I`m slowly going through things on it.. The FBH works very well, but seems to be on for far too long, although, I do have the R5 thermostat trick kit to fit to ensure the engine temp does rise to its correct 88 degrees c soon.. If that does not fully cure the FBH burn time I just may wire In a switch, but, hope it dont get that far.
As a once landyzone contributer I owned an early 3 door Disco for 10 years but due to disabilities she had to go, so now gone the smaller hippo route.. Loving my hippo now, but will love it more after various things I want to "Improve" through wear & tear over the years..
Am "not so well" but been round vehicles since I was 17, but have only reached just 71 years now = so my mechanic speeds are somewhat slower now.... LOL.... thanks...Ian.

Ian burritt · Oct 21, 2019

Nodge68 said:
If the FBH hasn't been serviced (cleaned of soot), then it can smell pretty unpleasant. If it's been cleaned regularly, then it's flue (It's a tiny oil boiler), smells just like a diesel exhaust.

Hi again, As I always do, I poured a whole bottle of REDEX diesel system cleaner on half tank of diesel and ran the hippo for a few days on short runs, but topped up with more fresh diesel.. It seems to run better after, but left me wondering if it cleaned out the burning chamber of the FBH.... thanks, Ian

Ian burritt · Dec 30, 2019

Ian burritt said:
Hi again, As I always do, I poured a whole bottle of REDEX diesel system cleaner on half tank of diesel and ran the hippo for a few days on short runs, but topped up with more fresh diesel.. It seems to run better after, but left me wondering if it cleaned out the burning chamber of the FBH.... thanks, Ian

Well, for reasons unknown as yet my FBH has stopped working, and yes did fit my aftermarket 88 degree thermostat which holds the engine temp in the centre of the temperature range on the gauge nicely now.
I`m now noticing why they fitted the FBH to aid engine warning up as I do lots of local short runs.
I suppose I should look at fuse 5 before I look at anything else first, but from there if OK will be a general look and see I suppose...... Maybe try and check the air temperature sensor behind the grill also...
We will see.
wrong time if year for my old bones really..lol
happy new year all very soon.
ian.

Devilish · Jan 13, 2020

The ambient temp sensor will not be the problem, it will be your FBH. With luck, it will be a PCB fault, this can be done with the FBH in situ, everything else, the FBH will have to come off.

Devilish · Jan 13, 2020

The ambient temp sensor will not be the problem, it will be your FBH. With luck, it will be a PCB fault, this can be done with the FBH in situ, everything else, the FBH will have to come off.

Nodge68 · Jan 13, 2020

Devilish said:
The ambient temp sensor will not be the problem, it will be your FBH.

They do fail sometimes. However the FBH will only run if the air temperature is below about 5°C anyway, so unless it's below that temperature, it's difficult to tell what's up, unless the FBH is being triggered by the auxiliary input.

Nodge68 · Jan 13, 2020

Devilish said:
The ambient temp sensor will not be the problem, it will be your FBH.

They do fail sometimes. However the FBH will only run if the air temperature is below about 5°C anyway, so unless it's below that temperature, it's difficult to tell what's up, unless the FBH is being triggered by the auxiliary input.

teddywood1 · Jan 15, 2020

on my old car I got fed up with the FBH so I went under the front bumper and just pulled the plug as F5 did not seem to do anything when I pulled it

Jayridium · Jan 15, 2020

I want a FBH for my hippo, but never seem to see any coming up at reasonable money :-(

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