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How effective is you FBH?
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Dusty
 


Member Since: 23 Sep 2013
Location: London
Posts: 639

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

My timed climate always gets the screen defrosted no matter how frozen the screen is Very Happy

Temp gauge usually registers just under halfway to normal and heater is just starting to get toastie.

All in all a great extra this time of year which always has my neighbours looking on in envy as they scrape away at their windscreens Mr. Green

Also it worked the other day when my petrol light was on and range said 27 miles, I thought it wasn't supposed to work with the petrol light on, or was that the D3?
 Discovery 4 HSE
SDV6
2015 
 
Post #188489329th Nov 2017 6:03 pm
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ostosix
 


Member Since: 19 Mar 2017
Location: Lincoln
Posts: 153

United Kingdom 2005 Discovery 3 TDV6 SE Auto Tonga GreenDiscovery 3

[quote="OJ-LR4"]Pretty effective I’d say, outside temp -3, roughly 5 min intervals between pics- Bodsy supplied my remote, Bow down nice system, easy to self install and set

Does the timed climate take much heat from the engine? On the temp gauage?
  
Post #188498829th Nov 2017 9:15 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 4391

England 2005 Discovery 3 TDV6 HSE Auto Adriatic BlueDiscovery 3

It puts it into the engine, not take it out.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #188500529th Nov 2017 9:51 pm
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ostosix
 


Member Since: 19 Mar 2017
Location: Lincoln
Posts: 153

United Kingdom 2005 Discovery 3 TDV6 SE Auto Tonga GreenDiscovery 3

I mean the warm coolant is supplying the cabin rather than warming the engine water jacket.
  
Post #188502229th Nov 2017 10:46 pm
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OJ
 


Member Since: 01 Oct 2017
Location: Loch Leven
Posts: 692

Scotland 2015 LR4 3.0 SDV6 SE Tech Auto Corris GreyLR4

The FBH is a fully independent auxiliary heater.

The FBH will work automatically when the vehicle is started assisting in raising the engine working temperature but only when when certain conditions are met (see guide). Once working temperatures are reached the FBH will cease operation until the cycle repeats.

Likewise providing certain conditions are met the FBH will also operate if worked by remote or timed climate, it will heat the engine coolant using its own recirculating pump and also warm the cabin by automatically engaging the climate system fans assisting in defrosting the vehicle. Depending on the remote type etc, the FBH will run for around 20 to 30 minutes.

In summer if worked by remote it can work the opposite way by engaging the climate system fans thus assisting in cooling the cabin temperature, only the climate fans will operate the FBH itself will not start as the temp conditions are not met.

There is a very good guide here which explains it in greater detail
http://disco4.com/wiki/Fuel_Burning_Heater

Hope this helps
Thumbs Up OJ
 

Last edited by OJ on 30th Nov 2017 7:55 am. Edited 1 time in total 
Post #188503129th Nov 2017 11:36 pm
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NickJ
 


Member Since: 11 Oct 2010
Location: there's no f in point
Posts: 1946

2006 Discovery 3 TDV6 S Auto Zambezi SilverDiscovery 3

I'm unsure on mine whether or not it only confuses things, after FBH running the car doesn't start well, as if it's confused why the water temperature is so warm and yet the rest isn't.
  
Post #188505630th Nov 2017 6:51 am
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OJ
 


Member Since: 01 Oct 2017
Location: Loch Leven
Posts: 692

Scotland 2015 LR4 3.0 SDV6 SE Tech Auto Corris GreyLR4

I doubt if the FBH is confusing things, it sounds like there is another underlying issue which is causing the problem.
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Post #188506430th Nov 2017 7:52 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 4391

England 2005 Discovery 3 TDV6 HSE Auto Adriatic BlueDiscovery 3

NickJ wrote:
I'm unsure on mine whether or not it only confuses things, after FBH running the car doesn't start well, as if it's confused why the water temperature is so warm and yet the rest isn't.


You are not running the FBH long enough, it is heating the engine sufficiently enough to tell the heating plugs not to operate but not long enough to help the fuel to ignite.
If you are running the FBH for 30 minutes the water thermostat may be faulty and partly stuck open.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #188507930th Nov 2017 8:25 am
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Robbie
 


Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17629

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

NickJ wrote:
I'm unsure on mine whether or not it only confuses things, after FBH running the car doesn't start well, as if it's confused why the water temperature is so warm and yet the rest isn't.


The only reference used by the glowplugs is the ECT data. If the coolant is warm then the glowplugs will have reduced output or zero output. Meanwhile the rest of the system, including the injectors, are working in accordance with a cold start (ie more fuel and extended cylinder charge to mitigate the fuel condensing on the bore).

As an aside, the D3s I see that have no difference between an FBH pre-heat and a straight start always have knackered glowplugs.

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Post #188509930th Nov 2017 9:44 am
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Felstmiester
 


Member Since: 12 Dec 2016
Location: Hertfordshire
Posts: 165

England 2006 Discovery 3 TDV6 HSE Lux Auto Java BlackDiscovery 3

NickJ wrote:
I'm unsure on mine whether or not it only confuses things, after FBH running the car doesn't start well, as if it's confused why the water temperature is so warm and yet the rest isn't.
same. On a cold morning I blip the remote. Fbh runs for 30 mins. Get in turn the key. Temp gauge is sitting halfway to normal temp. Turn the key and it ticks over like a dog! So not worth using.  
Post #188521530th Nov 2017 5:32 pm
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