So yesterday i changed my battery on the range as an idea for why my fbh wasnt firing up for parked heating but was firing up with a cold engine..

So tried it this morning the new battery in and it deffo fired up, I could hear the fuel pump pulse / click at the rear and the fbh sounded like it was properly burning.. It ran for somewhere between 15-20 mins but i was suprised to find the cabin wasnt warm...

However it did do this to the screen?

Daz

This is going to you off, but mine got that far with ice on the screen on the coldest morning so far this winter. And the cabin had the chill off but I have to admit did not seem "warm".

Seriously that's getting better if the FBH stys on for 20 minutes, that's the time for a diesel. Did you say above you changed or charged the battery?

One question I have, how did you check the charging voltage on the car. Was it with a voltmeter on the battery while standing alongside and the car ticking over and did you have any electrics other than the FBH on? Cheers
Richard

(there are no such things as an ordinary FullFat, an ordinary cat or too many tools)
2011 TDV8 Vogue Santorini Black
Gap IIDBT

Further to our exchange via PM - other physcial issues worth investigating:

CHANGEOVER VALVE
The changeover valve is a normally open solenoid valve installed between the supply and return sides of the
heater coolant circuit. The changeover valve is located in the engine compartment on the engine bulkhead.
When de-energized, the changeover valve connects the heater coolant circuit to the engine coolant circuit.
When energized, the changeover valve isolates the heater coolant circuit from the engine coolant circuit.
The changeover valve is controlled by a power feed from the ATC module.

Circulation Pump
The circulation pump is installed at the coolant inlet to the FFBH unit to assist the coolant flow through the
FFBH unit and the heater assembly. The pump runs continuously while the FFBH unit is in standby or active
operating modes. While the FFBH unit is inactive, coolant flow is reliant on the engine coolant pump and the
auxiliary coolant pump. .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

This might seem a stupid question and if so many apologies but did you have the heating dials turned to max ? 2015 4.4 AB
GSXR 1000 K5
R1 1998

rjff wrote:

Daz

This is going to you off, but mine got that far with ice on the screen on the coldest morning so far this winter. And the cabin had the chill off but I have to admit did not seem "warm".

Seriously that's getting better if the FBH stys on for 20 minutes, that's the time for a diesel. Did you say above you changed or charged the battery?

One question I have, how did you check the charging voltage on the car. Was it with a voltmeter on the battery while standing alongside and the car ticking over and did you have any electrics other than the FBH on?

dolph34 wrote:

This might seem a stupid question and if so many apologies but did you have the heating dials turned to max ?

Joe90 wrote:

Further to our exchange via PM - other physcial issues worth investigating:

CHANGEOVER VALVE
The changeover valve is a normally open solenoid valve installed between the supply and return sides of the
heater coolant circuit. The changeover valve is located in the engine compartment on the engine bulkhead.
When de-energized, the changeover valve connects the heater coolant circuit to the engine coolant circuit.
When energized, the changeover valve isolates the heater coolant circuit from the engine coolant circuit.
The changeover valve is controlled by a power feed from the ATC module.

Circulation Pump
The circulation pump is installed at the coolant inlet to the FFBH unit to assist the coolant flow through the
FFBH unit and the heater assembly. The pump runs continuously while the FFBH unit is in standby or active
operating modes. While the FFBH unit is inactive, coolant flow is reliant on the engine coolant pump and the
auxiliary coolant pump.

Much easier with the wheelarch off, but you can try.... .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Daz, Joe

Not quite sure, but isn't the changeover valve on the engine compartment rear bulkhead. Taking the pollen filter assembly out might let you see it.

Can't do mine to look as off out and again tomorrow.

Daz

If you don't get a chance let me know and I'll have a look at mine Friday for you. Cheers
Richard

(there are no such things as an ordinary FullFat, an ordinary cat or too many tools)
2011 TDV8 Vogue Santorini Black
Gap IIDBT

That would be great buddy. As I’m stuck at work all week and crazy busy Regards

Daz

-------------------------
2011 (61plate) 4.4 tdv8
sumatra black

previous cars

e46 m3
e53 x5

Might even be Thursday. You've kindly given me a reason to get out of SWMBO to do list  Cheers
Richard

(there are no such things as an ordinary FullFat, an ordinary cat or too many tools)
2011 TDV8 Vogue Santorini Black
Gap IIDBT

Agreed, but as it is "inline" with the FBH pipework, got to be easier to gain full access .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

dazza1983 wrote:

dolph34 wrote:

This might seem a stupid question and if so many apologies but did you have the heating dials turned to max ?

Dolph the heating dials are irreverent with parked heating my friend.

I could have sworn mine needs the dials on max to get the heat. If im wrong then i will stand corrected i will conduct a test over the next two days. 2015 4.4 AB
GSXR 1000 K5
R1 1998

@ dolph34

no mention in RAVE or the 2007-10 manuals about needing to set the heat to max

FBH activity/ FBH park heating is determined by the external temperature / coolant temperature as monitored by the car .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

dazza1983 wrote:

the heating dials are irreverent with parked heating my friend.