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Models of FBH
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Robbie
 


Member Since: 05 Feb 2006
Location: Waiting for my old avatar to be allowed back... we miss her!
Posts: 17534

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

I am convinced that my FBH is not well - previously it was an intermittent failure to sustain and now it is almost impossible to get it running. It has been perfect until this year, which is ironic as I left it until this year before fitting an FBH controller. Not sure what to do next as I am struggling to find a service centre that will look at a 'V' and depressingly they direct me towards LR. LR are no help as they will only want to replace a whole unit.

I am tempted to try a service job myself but having never done this before I am apprehensive as to the work involved. I guess I could but the Webasto software and adaptor to see if that offers any additional insight but I suspect I would only be delaying the inevitable strip-down.

What I have gleaned from the Webasto dealers is that these heaters require regular servicing (cleaning out carbon etc) and were rather shocked that mine worked at all given that it has never been apart in nearly 7 years of use - albeit they run for shorter periods on cars than trucks / boats etc.
 Land Rover - Turning Drivers into Mechanics Since 1948

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Post #87513524th Dec 2011 12:10 pm
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B16 KJR
 


Member Since: 10 Jul 2006
Location: Rosyth, Fife
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Scotland 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Yulong WhiteDiscovery 4

Quote:
What I have gleaned from the Webasto dealers is that these heaters require regular servicing (cleaning out carbon etc) and were rather shocked that mine worked at all given that it has never been apart in nearly 7 years of use - albeit they run for shorter periods on cars than trucks / boats etc.


This seems strange as you said earlier that spares were not available. Whats the point of them saying it should be serviced regularly, but not being able to fit any parts that were required Question

Seems to be pretty poor product support from Webasto, which is strange due to the size of the company throughout Europe.
  
Post #87515224th Dec 2011 12:34 pm
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Robbie
 


Member Since: 05 Feb 2006
Location: Waiting for my old avatar to be allowed back... we miss her!
Posts: 17534

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

The service requirement, spares and warranty support they refer to is for regular Webasto heaters. The ones fitted to the D3 (Thermo Top V) require a similar level of support but in our case this is provided by Land Rover rather than the OEM. If you buy direct from Webasto they provide the after sales support.

Apologies if my original post was not clear enough.
 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
A not-for-profit enterprise


 
 
Post #87516924th Dec 2011 1:39 pm
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B16 KJR
 


Member Since: 10 Jul 2006
Location: Rosyth, Fife
Posts: 2827

Scotland 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Yulong WhiteDiscovery 4

But if you have a problem with the Thermo Top V and you go to Landrover, they will not strip it down for repair, they only want to replace it. Even if they did agree to strip it down for repair there are no spares available, or have I missed something entirely. ?
  
Post #87524324th Dec 2011 5:42 pm
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Robbie
 


Member Since: 05 Feb 2006
Location: Waiting for my old avatar to be allowed back... we miss her!
Posts: 17534

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

B16 KJR wrote:
...or have I missed something entirely. ?


I'm not sure you are adding anything over and above what I have written in my 2 posts - eggnog?
 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
A not-for-profit enterprise


 
 
Post #87532524th Dec 2011 9:33 pm
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B16 KJR
 


Member Since: 10 Jul 2006
Location: Rosyth, Fife
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Scotland 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Yulong WhiteDiscovery 4

OK Question
  
Post #87558626th Dec 2011 2:08 pm
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maplecottage
 


Member Since: 01 Feb 2011
Location: Cambridgeshire
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United Kingdom 2006 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Robbie - If I didn't know better I'd think you were writing about my FBH Rolling with laughter Rolling with laughter

Seriously though, I seem to be having similar issue to you and it appears to be coolant pump related. I've still got a couple of checks to do (advice via BAS) but to be honest, not hopeful and think I too will be looking to replace the whole unit. That said, from my previous observations, I think it's probably a fault on the PCB but not sure how I / if I, will be able to do anything about it.

Big Cry
 

 
 
Post #87623029th Dec 2011 10:06 am
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A1GSS
 


Member Since: 12 Sep 2010
Location: Saffron Walden, Essex
Posts: 4248

England 

These people do a strip/clean/new parts/test/service for Webasto & Eberspacher units:

http://www.startermotorsalternators.com/eb...epairs.php

Spoke to them a few weeks ago, very helpful. Might be worth a try. The unit has to be out of your car...
 Graham
New: 18MY BMW 740e Plug-in Hybrid M Sport
New: 17MY Evoque 2.0 TD4 SE Tech Loire Blue / Cirrus Grey 
 
Post #87623329th Dec 2011 10:19 am
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maplecottage
 


Member Since: 01 Feb 2011
Location: Cambridgeshire
Posts: 3149

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Cheers Graham - I've sent them an email Thumbs Up

Robbie - not sure if you have already sourced but I have found a workshop manual for the Thermo Top V and I see that the coolant pump resistance should be 10 (+/- 1) kohms so that's next on my list to check.

Whistle

Steve
 

 
 
Post #87625329th Dec 2011 10:56 am
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Robbie
 


Member Since: 05 Feb 2006
Location: Waiting for my old avatar to be allowed back... we miss her!
Posts: 17534

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

Hi Steve,

TVM - I do have a workshop manual for the V but I don't seem to have worked my way through as far as you, so very interested to see how far you get. I am convinced that my original issue was a failure to sustain due to glowplug/flame detector fighting the residual crud. Having got beyond that issue and having the heater work fine for a number of weeks this 'new' failure sees the FBH run for longer before shutting down, so your coolant thoughts sound persuasive!

Thumbs Up
 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
A not-for-profit enterprise


 
 
Post #87626529th Dec 2011 11:30 am
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A1GSS
 


Member Since: 12 Sep 2010
Location: Saffron Walden, Essex
Posts: 4248

England 

There's a strip down and servicing guide here:

http://nbalacrity.co.uk/wp-content/uploads...Boiler.doc

OK it's for a model fitted in a narrowboat but looks v similar...
 Graham
New: 18MY BMW 740e Plug-in Hybrid M Sport
New: 17MY Evoque 2.0 TD4 SE Tech Loire Blue / Cirrus Grey 
 
Post #87627229th Dec 2011 12:02 pm
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maplecottage
 


Member Since: 01 Feb 2011
Location: Cambridgeshire
Posts: 3149

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Robbie - my coolant pump errors mean the unit tends not to fire at all; seems the error code prevents the ignition cycle. It all whirrs and the fan runs but because the unit detects that the coolant pump circuit has failed (B1D27 DTC) it simply shuts down again. With the BAS controller it tries the obligatory 3 times but 99% of the time, no success.

The one time it did fire recently was when I started the egine in -2C temp and very quickly cleared down the error codes. This seemed to force it to start but I cannot repeat it so it's back to the drawing board.

The unit's PCB obviously has a means of detecting if the coolant pump circuit is nominal, that's why my next stop is to check the motor winding resistance, based on the 'hope' that the circuit is outside the 10K ohms range and failing as a result ?? The pump itself works fine when disconnected from the unit and given a straight 12 v from the battery, it has been suggested elsewhere on the forum that the pump control circuit is not quite so crude as to simply provide 12v - typical Yawn

Sorry if it appears to be a bit of a ramble but.................I'm sure you know exactly what I am feeling Bow down

Edit; Thought ?? If I was to apply a 10K ohm shunt across the pump circuit terminals, would that make the unit think all was OK and possibly provide a means of discounting the pump ??
 

 
 
Post #87631629th Dec 2011 2:31 pm
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maplecottage
 


Member Since: 01 Feb 2011
Location: Cambridgeshire
Posts: 3149

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Does anyone have a Webasto 'test loom' I could borrow for a site donation ??
 

 
 
Post #87632029th Dec 2011 2:38 pm
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crazy
 


Member Since: 27 Jan 2008
Location: Near Milan
Posts: 1852

Italy 2005 Discovery 3 TDV6 SE Auto Tonga GreenDiscovery 3

Robbie, in automatic mode your FBH work correctly or not?
Hi
 Landy lover
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Post #87655630th Dec 2011 7:55 am
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bellautos
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Member Since: 02 Feb 2006
Location: NorthYorkshire
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United Kingdom 2010 Discovery 4 3.0 TDV6 SE Auto Santorini BlackDiscovery 4

Rob's the thread OP does not fire at all in the cold or with my FBHIC.

Pete
 PLEASE Email me ONLY, PM's are really hard to manage conversations in where as emails are a lot more manageable and this enables better support.  
Post #87656030th Dec 2011 8:10 am
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