Webasto FBH - Useful Info - Page 2

Mike Trident · 4th February 2021, 21:20

Only with the engine running.

trebor · 5th February 2021, 00:47

Quote:

Originally Posted by Rev Jules

Have done all that, so it will fire up automatically without the remote once it drops below 5.

Rev.

If you use a remote to switch it on it doesn’t matter what the temperature is as it will fire up and stay on until you either switch it off or it ramps down around 71c

Used a a supplementary and with temp at 5 or below as Mike says it will only come on when the engine is running

squire · 5th February 2021, 07:31

Quote:

Originally Posted by trebor

If you use a remote to switch it on it doesn’t matter what the temperature is as it will fire up and stay on until you either switch it off or it ramps down around 71c

Used a a supplementary and with temp at 5 or below as Mike says it will only come on when the engine is running

Unless you short it out, surely Rob?

Martyn.

trebor · 5th February 2021, 11:42

Quote:

Originally Posted by squire

Unless you short it out, surely Rob?

Martyn.

If you mean a problem with the wiring on the car shorts the circuit then yes it can come on in those circumstances but if everything is working ok it wont just switch on if the temp is 5 or below unless the engine is started

squire · 5th February 2021, 16:13

Rob,
Used as supplementary heater I've got a wire which is earthed and I put the outer end into pin 3 to get the fbh to fire up. If I left that connected would the fbh fire up again once the water temp drops? I thought it would run continuesly as it's "bypass".

Martyn

trebor · 5th February 2021, 18:56

Hi Martyn , I see where you are coming from now ,but you are not shorting it out you are using pin 3 which is where the remote wire goes for use as a parking heater

That puts you in control so the heater will be on when you populate pin 3 and off when you disconnect it.

It will continue to run whilst pin 3 is populated whether the car is parked up or if the engine is running whilst parked or you are on a journey but note that:

Once the heater gets the coolant to 71c it goes into part load so will ramp down and still work using less fuel , when the temp gets to 77c it then goes into idle mode ready to come back on when needed.

When the temp then goes down to 71c it goes back into part load and will head back up to 77c

The heater is designed to switch itself off after 76 minutes so even if you left it on that long it will switch off

Obviously if it is left on for any great length of time without the engine running it will impact on your battery so when it is used as a parking heater people generally leave it on for around 20 minutes then start their journey

Why don’t you have a simple remote fitted to save you leaving the house to insert the wire into pin 3 ?

squire · 5th February 2021, 20:18

Thanks for the clarification Rob.
I have thought about the remote but to be honest as I'm not working now I don't see much point of it. My friend John has got a bit of a problem with his that's even beaten Devilish for the moment, I've had to pull the plugs out for him to disable the fbh for the time being, need to get the Nano's going again once we're allowed to, lol.

Cheers,

Martyn

4th February 2021, 21:20	#11
Mike Trident Posted a thing or two Rover 75 CDTi Saloon & Citroen C1 Join Date: Jun 2016 Location: Oakenshaw, Near Bradford Posts: 1,622 Thanks: 385 Thanked 552 Times in 328 Posts	Only with the engine running. __________________ Rover 75 2.0 CDTi (131Ps) Conn SE Saloon. (Manual) 160 Remap, cruise control, electric window blind, temp gauge, Real walnut / ZT interior, FBH with GSM control. BORN Tuesday, 5th October 2004 @ 12:35:52 This vehicle was the 104,679th 75 to run off the production line, out of 112,381 This vehicle was the 3,318th 75 CDT Connoisseur SE (135) to be made out of 4,744 This vehicle was the 12,440th 75 in Starlight Silver (code: MBB) to be made out of 14,280 Starlight Silver 75s

5th February 2021, 18:56	#16
trebor This is my second home Rover 75 CDTi Connoisseur SE & MG ZT Saloon 190 Join Date: Jun 2007 Location: Coven Posts: 12,522 Thanks: 526 Thanked 1,877 Times in 885 Posts	Hi Martyn , I see where you are coming from now ,but you are not shorting it out you are using pin 3 which is where the remote wire goes for use as a parking heater That puts you in control so the heater will be on when you populate pin 3 and off when you disconnect it. It will continue to run whilst pin 3 is populated whether the car is parked up or if the engine is running whilst parked or you are on a journey but note that: Once the heater gets the coolant to 71c it goes into part load so will ramp down and still work using less fuel , when the temp gets to 77c it then goes into idle mode ready to come back on when needed. When the temp then goes down to 71c it goes back into part load and will head back up to 77c The heater is designed to switch itself off after 76 minutes so even if you left it on that long it will switch off Obviously if it is left on for any great length of time without the engine running it will impact on your battery so when it is used as a parking heater people generally leave it on for around 20 minutes then start their journey Why don’t you have a simple remote fitted to save you leaving the house to insert the wire into pin 3 ? __________________ www.midlandsnanomeets.co.uk Robs Car Gallery Coven near Wolverhampton WV9 2000 Cowley Built Rover 75 2.0 V6 Club SE/ Atlantic Blue/ Sandstone/Walnut (daily driver) 2003 Land Rover Freelander 1 TD4 HSE Helsinki Blue/Black Leather (swmbo daily driver)

5th February 2021, 16:13	#15
squire Posted a thing or two MGB GT, 2 Morris Minor Travellers Join Date: May 2011 Location: Bilston Posts: 1,661 Thanks: 1,610 Thanked 497 Times in 370 Posts	Rob, Used as supplementary heater I've got a wire which is earthed and I put the outer end into pin 3 to get the fbh to fire up. If I left that connected would the fbh fire up again once the water temp drops? I thought it would run continuesly as it's "bypass". Martyn

5th February 2021, 20:18	#17
squire Posted a thing or two MGB GT, 2 Morris Minor Travellers Join Date: May 2011 Location: Bilston Posts: 1,661 Thanks: 1,610 Thanked 497 Times in 370 Posts	Thanks for the clarification Rob. I have thought about the remote but to be honest as I'm not working now I don't see much point of it. My friend John has got a bit of a problem with his that's even beaten Devilish for the moment, I've had to pull the plugs out for him to disable the fbh for the time being, need to get the Nano's going again once we're allowed to, lol. Cheers, Martyn