It's easy to see that it is getting colder by the amount of FBH threads. I have not been able to find the answer for this though.

I started it manually just now, it started humming and i could feel the exhaust was warm. It ran for a few minutes then stopped. I hooked up my IIDtool and for FBH I found 2 error codes. I have tried Google, I have tried this forum, but I can not find anything about these codes:

1/2 0x0B08re Unknown
2/2 0x0204re Unknown

Can anybody help me to dechifre these two? 2006 Supercharged

Last edited by Ian928 on 27th Nov 2017 2:13pm. Edited 1 time in total

Did some more testing:

Test 1
Removed and reinstalled fuse
Started park heat maually and timed it
FrenchMike mention "weird turbine like noise", this is definately true when it starts up
The fuel pump ticks at least two times pr sec
It stopped after 3min 57 sec. I see that FrenchMike states that stop after 4min 10sek is a sign of bad glow plug resistor. Maybe this is the problem?

Test 2
Reset errors in ECU with IIDtool
Started park heat manually and ran till it stopped (did not time it)
Checked errors with IIdtool, now only one error code: 0x0204re

Test 3
Started the car (-2°C outside and the enginge showed cold) and listened for the FBH and felt the exhaust
I could not hear or feel it start. Does the FBH not act as a extra heater for the Petrol models? 2006 Supercharged

The glow plug issue won't apply as it is petrol and the heater runs off the main tank I ended up having mine replaced under warranty so can't help much afraid but it sounds like a fuelling issue

was the engine running Ian? if not it may be the battery is to weak.

Sandyt wrote:

The glow plug issue won't apply as it is petrol and the heater runs off the main tank I ended up having mine replaced under warranty so can't help much afraid but it sounds like a fuelling issue

nino_nino wrote:

was the engine running Ian? if not it may be the battery is to weak.

Did some more tests today:

Put a very inaccurate voltmeter across the battery. It read 11,7V. Started the FBH manually and the voltage dropped to 11,5 and stayed there. The FBH ran for over 5 minutes, then I heard the fan (or circulatin pump?) rpms starting to change up and down, it could very well be that the FBH was cutting in and out because of undervoltage, but I could see no change from the voltmeter.

I then put a tricle charger on for a few minutes and tried again. Before starting the FBH the voltage now was 12,1V, but as soon as the FBH started it fell to 11,6V and stayed there. The same thing happened, after some minutes the stuttering sound came back.

I do think I changed the battery lasty year after unsuccessfully tyring to run the FBH, that did not make any difference. 2006 Supercharged

Ian928, on mine it runs with the engine running. it helps engine to get to working temp. and the bonus is faster heat in the cabin. start the engine and listen for the pump clicks and the humming from the heater.

The petrol ones only cut in with the engine running if the temp is below 1degree c on the oil burners I think it is 14 or 16 degrees c so quite different

nino_nino wrote:

Ian928, on mine it runs with the engine running. it helps engine to get to working temp. and the bonus is faster heat in the cabin. start the engine and listen for the pump clicks and the humming from the heater.

I have now received a description from GAP about the code:

Combustion air fan - Open circuit or short circuit to battery

So does this mean for sure the fan motor is faulty, or could this be a problem with the controller? I have read a lot about faulty controllers on this board. 2006 Supercharged