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DISCO4.COM > Webasto Fuel Burning Heater

FBH failing to ignite - Smoke but no fire!
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goodo
 


Member Since: 04 Dec 2018
Location: Cheltenham
Posts: 96

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Santorini BlackDiscovery 4
FBH failing to ignite - Smoke but no fire!

It’s nice to set the FBH to come on in the mornings to defrost the car before the school run. Last couple of days it’s failed to start.

I check it this morning by setting it to come on manually (from the info screen) and it made the usual jet taking off noises, and kicked out a lot of smoke, but didn’t ignite.

I’ve read the fault codes and they said

B1D29-93 no start even after restart attempt

B1D31-94 flame detected prior to normal operation

U3000-16 Control module

Any ideas? Time for a strip down and clean? Can this be done and still use the car?

Thanks  
Post #227262113th Jan 2022 2:09 pm
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nigethecat
 


Member Since: 11 Sep 2016
Location: Marnoch
Posts: 4142

Ukraine 2016 Discovery 4 3.0 SDV6 Commercial XS Auto Corris GreyDiscovery 4

Have you checked how much fuel is in the car ? needs at least 1/4 tank otherwise it doesn't want to play !

If you have a GAP you can test fire it I believe... I want to see the sweets before I get into your windowless van... I'm not stupid!

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Post #227268013th Jan 2022 7:50 pm
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6232

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

Quote:
Can this be done and still use the car?


Yes , you will need to join the two coolant pipes together, then you should be fine.

Flack Thumbs Up  
Post #227269513th Jan 2022 8:52 pm
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goodo
 


Member Since: 04 Dec 2018
Location: Cheltenham
Posts: 96

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Santorini BlackDiscovery 4

nigethecat wrote:
Have you checked how much fuel is in the car ? needs at least 1/4 tank otherwise it doesn't want to play !

If you have a GAP you can test fire it I believe...


I just checked and there’s half a tank. Don’t have a gap tool unfortunately…. Thanks  
Post #227275114th Jan 2022 8:52 am
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goodo
 


Member Since: 04 Dec 2018
Location: Cheltenham
Posts: 96

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Santorini BlackDiscovery 4

Flack wrote:
Quote:
Can this be done and still use the car?


Yes , you will need to join the two coolant pipes together, then you should be fine.

Flack Thumbs Up


Thanks, I’ve seen a guide by Robbie which I’ll explore in more detail. Car is 11 yrs old now, so I’m sure the FBH hasn’t been touched to date. Will consider a summer refurb.  
Post #227276914th Jan 2022 10:11 am
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6232

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

One quick way to see if it will fire up is to pull off the air intake pipe and try to start it, while giving it a quick squirt with easy start to see if it kicks in to life.
You can fool the car by sticking the sensor in the freezer.

Flack Thumbs Up  
Post #227277114th Jan 2022 10:15 am
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