Go Back   The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club Forums > Technical Help Forum
Register FAQ Image Gallery Members List Calendar Mark Forums Read
Notices

Reply
 
Thread Tools Display Modes
Old 19th January 2020, 08:50   #1
macafee2
This is my second home
 
Rover 75 Saloon & Tourer

Join Date: Sep 2012
Location: Lincoln
Posts: 14,890
Thanks: 1,630
Thanked 3,032 Times in 2,181 Posts
Default qustions about FBH

please don't groan for yet another FBH question

I think I have understood that if I apply an earth to start the FBH but remove it after a few seconds or sooner that if I did this enough times the PCB locks out.

Question 1
If, when the temperature is below zero I start the car and then 5 - 10 seconds later turn it off (just need to move car out the way) and I do this enough times, can the PCB lock out?

Question 2
If the FBH in between each brief start of start up procedure, is allowed to fully start and run, will this cancel any "false" starts?

macafee2
macafee2 is offline   Reply With Quote
Old 19th January 2020, 20:58   #2
bl52krz
This is my second home
 
bl52krz's Avatar
 
Rover 75 cdt club + Rover 2.5 KV6 Conni SE

Join Date: May 2008
Location: Birmingham
Posts: 11,356
Thanks: 6,587
Thanked 2,262 Times in 1,729 Posts
Default

Drop Trebor Or Devilish a line. They will tell you. I think that it won’t do it any harm once or twice, but you could leave it running for around ten minutes, but don’t forget it uses 40 watts. You will also probably get some white smoke out the exhaust if you stop it to quick. It runs a clearing cycle before shutting down.
__________________
Great Barr, Birmingham.
bl52krz is offline   Reply With Quote
Old 21st January 2020, 17:38   #3
Devilish
Been round the block
 
Devilish's Avatar
 
75 Tourer

Join Date: Apr 2009
Location: Cannock
Posts: 4,115
Thanks: 3
Thanked 189 Times in 121 Posts
Default

Quote:
Originally Posted by macafee2 View Post
if I apply an earth to start the FBH but remove it after a few seconds or sooner that if I did this enough times the PCB locks out.
If you do it enough times you will get fed up, that is all. A lockout is not stored in physical memory, lockout is sort of remembered, when power is cut, it forgets.

Quote:
Originally Posted by macafee2 View Post
Question 1
If, when the temperature is below zero I start the car and then 5 - 10 seconds later turn it off (just need to move car out the way) and I do this enough times, can the PCB lock out?
No, if it did, every FBH would be locked out at some point. I would be dealing with lockouts every week. Also "Ian tapping start command" is not a recognised in the software as a fault

Quote:
Originally Posted by macafee2 View Post
Question 2
If the FBH in between each brief start of start up procedure, is allowed to fully start and run, will this cancel any "false" starts?
No, only 1 way to clear faults from memory.

For anyone who may misunderstand or take me seriously, here are some smileys,

Last edited by Devilish; 21st January 2020 at 18:02..
Devilish is offline   Reply With Quote
Old 21st January 2020, 19:05   #4
macafee2
This is my second home
 
Rover 75 Saloon & Tourer

Join Date: Sep 2012
Location: Lincoln
Posts: 14,890
Thanks: 1,630
Thanked 3,032 Times in 2,181 Posts
Default

cheers Devilish, useful info.

macafee2
macafee2 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 18:09.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © 2006-2023, The Rover 75 & MG ZT Owners Club Ltd