Fuel Burning Heater----Another One. - Page 13

CDTi · 19th May 2008, 22:53

In that case, you need to put a ground on pin 3 to fire up the FBH.

GrahamP · 20th May 2008, 00:09

Will give it a try later today, having read through this thread and linked ones plus downloaded all the pdf's, if the FBH is working correctly will go for the timer mod to get the parking heater part fitted and working.
thanks for the help.

David Lawrence · 6th January 2009, 18:07

Quote:

Originally Posted by GrahamP

The only info I can find is 66724A 12v on the front metal plate & 2G 855173.

On the white stuck on label on the side I have

Rover 75 JEC 104390
Thermo TopZ
98507B

My presently factory original FBH contains the same Identifications as those quoted here. I searched 3 suppliers for a replacement after the PCB started exhibiting the faults of starting up the heater when I unlocked the central locking, and also frequent lock outs and white smoke. All three offered JEC104391 as a replacement for JEC104390 and having received the new part today I note also that the other code 66724A has changed on the new one to 66724B.

Can anyone confirm that replacement should be a direct swap, or is any change needed to the 6 pin plug?

Thanks.

James.uk · 15th January 2009, 00:00

My FBH does absolutely nothing as far as I can tell. So having had a word with my tame mech, he admits to not having a clue as to how it works, So I had him bypass the unit altogether by taking both water pipes off and joining them together. Do I need to unplug the plugs?

I will have to find a place that can fix this unit eventually.

But meantime I have discovered that the thermo is working at least some of the time, i.e. The top hose suddenly gets hot after a few mins, the guage gets up to temp, but then drops off again to barely register. But the car heater seems to copy it and also goes much colder when the temp guage goes down!!

At the moment, it looks as though summer will be here before I sort things out! ..

Edit- I decided to pull both plugs on the FBH as I dont want it going BANG! lol.. It is now isolated completely and will remain so untill I can get it repaired..
.

19th May 2008, 22:53	#121
CDTi This is my second home No longer in the MGR club Join Date: Nov 2006 Location: Tipperary Posts: 3,933 Thanks: 35 Thanked 51 Times in 35 Posts	In that case, you need to put a ground on pin 3 to fire up the FBH. __________________ 'Tis better to be silent and be thought a fool, than to speak and remove all doubt.

20th May 2008, 00:09	#122
GrahamP Loves to post Rover 75 2.0 CDT Club Automatic Join Date: Apr 2008 Location: Park Gate Posts: 438 Thanks: 0 Thanked 0 Times in 0 Posts	Will give it a try later today, having read through this thread and linked ones plus downloaded all the pdf's, if the FBH is working correctly will go for the timer mod to get the parking heater part fitted and working. thanks for the help. __________________ Graham 3606 [SIGPIC][/SIGPIC]

15th January 2009, 00:00	#124
James.uk Passed Away 2002 Pale Blue. Rover 75 CDTi Connoisseur auto. 170K miles Join Date: Dec 2008 Location: Near the M67. Posts: 14,509 Thanks: 199 Thanked 585 Times in 397 Posts	My FBH does absolutely nothing as far as I can tell. So having had a word with my tame mech, he admits to not having a clue as to how it works, So I had him bypass the unit altogether by taking both water pipes off and joining them together. Do I need to unplug the plugs? I will have to find a place that can fix this unit eventually. But meantime I have discovered that the thermo is working at least some of the time, i.e. The top hose suddenly gets hot after a few mins, the guage gets up to temp, but then drops off again to barely register. But the car heater seems to copy it and also goes much colder when the temp guage goes down!! At the moment, it looks as though summer will be here before I sort things out! .. Edit- I decided to pull both plugs on the FBH as I dont want it going BANG! lol.. It is now isolated completely and will remain so untill I can get it repaired.. . Last edited by James.uk; 15th January 2009 at 12:50..