FBH Question

[JMW]

Hey,

Not sure if I have made an error.

I have the FBH with the timer and remote. I tried the remote and the FBH goes through its cycle and fails to fire up, so I checked the pump and no clicking, checked the fuel line and dry! So I thought I would swap the pump over from my spare car that I know works and still no joy, so I swapped the pcb as well. Still nothing.

Then I thought that as the outside temp was 9 degrees would this stop the pump from working? I don’t know if the remote has an override function or if it simply follows the usual rules when you start the car in that if the temp outside isn’t lower than 5 degrees it won’t fire up although it will go through it’s pre cycle as it’s been activated by the remote.

Should I remove the 6 pin plug and short pin 3 to over ride it and see if the pump works then or is there something else I might have missed? Dodgy earth in the pump plug etc.

Any help appreciated.

Jonathan

[FrenchMike]

Hey,

Not sure if I have made an error.

I have the FBH with the timer and remote. I tried the remote and the FBH goes through its cycle and fails to fire up, so I checked the pump and no clicking, checked the fuel line and dry! So I thought I would swap the pump over from my spare car that I know works and still no joy, so I swapped the pcb as well. Still nothing.

Then I thought that as the outside temp was 9 degrees would this stop the pump from working? I don’t know if the remote has an override function or if it simply follows the usual rules when you start the car in that if the temp outside isn’t lower than 5 degrees it won’t fire up although it will go through it’s pre cycle as it’s been activated by the remote.

Should I remove the 6 pin plug and short pin 3 to over ride it and see if the pump works then or is there something else I might have missed? Dodgy earth in the pump plug etc.

Any help appreciated.

Jonathan


Hi Jonathan,

Firstly ,try your burner as itself like this.(maintain the contact )

http://rovermg1.free.fr/rovermg/thumbnails/HeY7llvZ9if4ZhFTPBc1.jpg (http://rovermg1.free.fr/rovermg/images/HeY7llvZ9if4ZhFTPBc1.jpg)

If you get some heat ,it will be remote related.

If the fan stops after 2 minutes ,your PCB has issues ...but, i can help :}

Mike

[JMW]

Hi Jonathan,

Firstly ,try your burner as itself like this.(maintain the contact )

http://rovermg1.free.fr/rovermg/thumbnails/HeY7llvZ9if4ZhFTPBc1.jpg (http://rovermg1.free.fr/rovermg/images/HeY7llvZ9if4ZhFTPBc1.jpg)

If you get some heat ,it will be remote related.

If the fan stops after 2 minutes ,your PCB has issues ...but, i can help :}

Mike


Hi Mike,

Thanks, will try that in the morning, you repaired my first PCB a few years ago :-)

I think it might have something to do with the remote but will update the thread tomorrow.

Many thanks

[macafee2]

I thought temp had to be 7 degrees or less

macafee2

[HarryM1BYT]

I thought temp had to be 7 degrees or less

macafee2

From memory <5C, but only for the FBH to run auto. Manual operation will run at any temperature, but cut off on coolant temperature.

The FBH switches the pump on/controls the pump, so if the FBH shows signs of life, the pump should be active. If the FBH fails to fire three times in a row, it will go to 'lock- out' and need to be reset by pulling the fuse.

No clicking from the pump suggests the pump has failed, the wiring/connections, or the FBH is not trying to power it.

Try a meter across the pump terminals, whilst the FBH is making the proper noises.

[JMW]

From memory <5C, but only for the FBH to run auto. Manual operation will run at any temperature, but cut off on coolant temperature.

The FBH switches the pump on/controls the pump, so if the FBH shows signs of life, the pump should be active. If the FBH fails to fire three times in a row, it will go to 'lock- out' and need to be reset by pulling the fuse.

No clicking from the pump suggests the pump has failed, the wiring/connections, or the FBH is not trying to power it.

Try a meter across the pump terminals, whilst the FBH is making the proper noises.


Hi,

FBH runs on pin 3 to earth override for 2 min 7 seconds, pump is from a working unit which I ran yesterday and should be fine only other thing then is to send the pcb to French mike for examination unless there is a problem with the wiring from the pcb to the pump?

Many Thanks

[Atcchus]

Hi,

FBH runs on pin 3 to earth override for 2 min 7 seconds, pump is from a working unit which I ran yesterday and should be fine only other thing then is to send the pcb to French mike for examination unless there is a problem with the wiring from the pcb to the pump?

Many Thanks

Check this out . FrenchMike’s diagnosis -

https://the75andztclub.co.uk/forum/showpost.php?p=779885&postcount=27

[Dart2050]

Thought I'd try this as photo made it look easy.
However I can't see how to connect to pin 3. Seems to be very firmly within a connector . I'll try to attach a photo of mine.

[Atcchus]

Thought I'd try this as photo made it look easy.
However I can't see how to connect to pin 3. Seems to be very firmly within a connector . I'll try to attach a photo of mine.

Do you have timer and telestart?

[grs6680]

Thought I'd try this as photo made it look easy.
However I can't see how to connect to pin 3. Seems to be very firmly within a connector . I'll try to attach a photo of mine.

mine is the same as this photo,what is telstart

[HarryM1BYT]

Hi,

FBH runs on pin 3 to earth override for 2 min 7 seconds, pump is from a working unit which I ran yesterday and should be fine only other thing then is to send the pcb to French mike for examination unless there is a problem with the wiring from the pcb to the pump?

Many Thanks

That timing is typical of the usual problem of failed components on the PCB, which FrenchMike specialises in fixing.

[JMW]

Thought I'd try this as photo made it look easy.
However I can't see how to connect to pin 3. Seems to be very firmly within a connector . I'll try to attach a photo of mine.

Thanks, I used a surgical scalpel to connect to the wire in pin 3, means I didn’t have to disconnect or properly cut anything.

[HarryM1BYT]

mine is the same as this photo,what is telstart

Telestart is the timer system to turn the FBH on at a time you set with it, so the car is toasty in time for you to drive to work.

You can get a connection to pin 3 by poking a thin rigid wire into the hole for pin 3, with the plug still in place. The rigid wire as used for internal phone wiring works fine for this.

[JMW]

Do you have timer and telestart?


I have the timer unit in the arm rest that starts the FBH which I think must be telestart, plus the remote.

I have been in touch with French mike and will be sending the pcb to him this week for repair, just in time for the cold snap :-)

[Dart2050]

Do you have timer and telestart?
I don't have a timer but there are two small holes in central arm rest so perhaps it once had one.
No idea what a telestart is, not heard of that before.

[Dart2050]

Telestart is the timer system to turn the FBH on at a time you set with it, so the car is toasty in time for you to drive to work.

You can get a connection to pin 3 by poking a thin rigid wire into the hole for pin 3, with the plug still in place. The rigid wire as used for internal phone wiring works fine for this.
Thanks, this is useful. I'll try again tomorrow.

[Dart2050]

Thanks, I used a surgical scalpel to connect to the wire in pin 3, means I didn’t have to disconnect or properly cut anything.

Gosh , now that's proper car surgery! I can't see any space to get a wire or anything else in but il have another go tomorrow.

[FrenchMike]

Gosh , now that's proper car surgery! I can't see any space to get a wire or anything else in but il have another go tomorrow.

Hi, You know the trick to dismantle the connector ?

http://rovermg1.free.fr/rovermg/thumbnails/I8UVymgVHVj6h4kjTsiK.jpg (http://rovermg1.free.fr/rovermg/images/I8UVymgVHVj6h4kjTsiK.jpg)

http://rovermg1.free.fr/rovermg/thumbnails/4AjOcyYQrp4Z9BhRIxIf.jpg (http://rovermg1.free.fr/rovermg/images/4AjOcyYQrp4Z9BhRIxIf.jpg)

Good luck

Mike

[Atcchus]

I don't have a timer but there are two small holes in central arm rest so perhaps it once had one.
No idea what a telestart is, not heard of that before.

Starting the FBH by remote . It comes in two parts T80 /T90 and a remote fob . As you can see in the picture the remote fob with 2 buttons , the telestart T90 and the timer ? Can be easily retro fitted if you have the loom .

https://i.imgur.com/XHLumzNl.jpg