Rover 75 heater blower not working

PatLatham · 9th December 2008, 01:45

Hi all, I do hope I have done everything I should before making this post, I tried to check the FAQ's and have updated my profile as much as I can, so if anyone can help it would be most appreciated.
I have a Rover 75 2.5L V6 Connoisseur with environment control as in the picture, which would be fine if the blower motor was running, but it refuses to do just that. I have had it tested at the Rover garage and the man said that the controller was fine, as is the motor itself, and the only other thing it could be is the 'resistor pack'.
They are currently on back order from MG Rover, but in the meantime I have no heating. Does anyone know where I could get one of these from, and how it is installed, as I may prefer to do the job myself.
If someone could possibly point me in the right direction for where to look for this 'resistor pack' and where I might obtain a replacement at reasonable cost it would be most helpful. I understand the work required to do this is not too complicated, but any hints would help. The quote I have is for £170-00 which is something I can ill afford at this time of year.
Thank you for reading and I hope it isn't too boring for here.

JohnDotCom · 9th December 2008, 07:44

Welcome to the Club Pat,
and sorry to hear you have problems.

Other than checking the Fuse and Relay thats about as far as I can suggest,
but someone will be along later with further suggestions and fixes I'm sure.

Simon · 9th December 2008, 10:25

Perhaps you could explain what exactly your heater/climate control does, or does not do. There maybe another explanation to your problems. The garage may well be correct but a second opinion from the members wouldn't go amis

Jules · 9th December 2008, 10:42

Swap relay 5 (blower) with relay No 2 (Heated rear window)
Both are large yellow relays in the under bonnet fusebox.
I believe the digital ATC consoles have a Transistor Pack regulator (item 9 in John's PDF) as opposed to a resistor pack
Let me know your findings:xmas-smiley-022:

justmicky · 9th December 2008, 11:44

Hi Pat,
Welcome to the club.
It was me that posted the link to this site in the yachting forum yesterday. I do hope you get sorted out with your heater problem real soon. This a great club -welcome

PatLatham · 9th December 2008, 12:09

Hello JM, and thank you for the link. I am going to swap the relays around as has been suggested, this afternoon, but could someone tell me where the resistor/transistor pack would be so I can try and identify which it is ?
In response to the question of what exactly is wrong, this is quite simply that the blower motor is not blowing, so no warm air is coming into the car. On a manual type car I would expect some warm air to flow when driving along even without the motor running, if the heat setting was set high, but on this I seem to get nothing but a faint trickle of cold air, just enough to clear the screen, when on the move.
Thanks for the help so far, and I'll get back with the result of changing the relays over.

PatLatham · 9th December 2008, 14:51

I have now swapped the relays over and I am afraid it has made no difference, the blower motor still doesn't blow.

Jules · 9th December 2008, 18:34

You could try the self diagnostics for the ATC unit.
Hold AUTO button in the switch on ignition.
Thread somewhere on the home page in the DATA downloads IRRC.

Then it's a job for a multi meter prodding around the transistor pack & motor pins itself.
Good luck
Here it is: Bottom left PDF file http://www.the75andztclub.co.uk/index.php?thepage=howto
If you can't view them I think you need to cough up yer 3 quid subscription fees.
Very cheap membership of a fine club IMO

PatLatham · 9th December 2008, 20:19

Thank you, I will carry out the check tomorrow and see what it says. I did manage to open the files so maybe I am a paid up member of something

One thing I seem unable to find is the location of the transistor/resistor pack, could you say where it is ?

I am a little confused though, does your comment refer to becoming a paid up member of this forum ?
If that is the case then I am more than happy to join, as I have one or three other problems that I would like advice about. In which case, could someone point me in the direction for joining up ?.

Greeners · 9th December 2008, 20:25

Top right of the page....The blue subscribe button.........worth every penny.

9th December 2008, 01:45	#1
PatLatham Newbie Rover 75 Conosoir 2.5L V6 Auto Join Date: Dec 2008 Location: Lincolnshire (South) Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts	Rover 75 heater blower not working Hi all, I do hope I have done everything I should before making this post, I tried to check the FAQ's and have updated my profile as much as I can, so if anyone can help it would be most appreciated. I have a Rover 75 2.5L V6 Connoisseur with environment control as in the picture, which would be fine if the blower motor was running, but it refuses to do just that. I have had it tested at the Rover garage and the man said that the controller was fine, as is the motor itself, and the only other thing it could be is the 'resistor pack'. They are currently on back order from MG Rover, but in the meantime I have no heating. Does anyone know where I could get one of these from, and how it is installed, as I may prefer to do the job myself. If someone could possibly point me in the right direction for where to look for this 'resistor pack' and where I might obtain a replacement at reasonable cost it would be most helpful. I understand the work required to do this is not too complicated, but any hints would help. The quote I have is for £170-00 which is something I can ill afford at this time of year. Thank you for reading and I hope it isn't too boring for here.

9th December 2008, 10:42	#4
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	Swap relay 5 (blower) with relay No 2 (Heated rear window) Both are large yellow relays in the under bonnet fusebox. I believe the digital ATC consoles have a Transistor Pack regulator (item 9 in John's PDF) as opposed to a resistor pack Let me know your findings:xmas-smiley-022: __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block Last edited by Jules; 9th December 2008 at 10:47..

9th December 2008, 18:34	#8
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	You could try the self diagnostics for the ATC unit. Hold AUTO button in the switch on ignition. Thread somewhere on the home page in the DATA downloads IRRC. Then it's a job for a multi meter prodding around the transistor pack & motor pins itself. Good luck Here it is: Bottom left PDF file http://www.the75andztclub.co.uk/index.php?thepage=howto If you can't view them I think you need to cough up yer 3 quid subscription fees. Very cheap membership of a fine club IMO __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block Last edited by Jules; 9th December 2008 at 18:36..

9th December 2008, 20:25	#10
Greeners Moderator MG-ZTT Join Date: Mar 2007 Location: Ware, Herts Posts: 19,798 Thanks: 161 Thanked 1,249 Times in 1,036 Posts	Top right of the page....The blue subscribe button.........worth every penny. __________________ *David* Impecunity is the mother of ingenuity Useful how to's for common problems Car Of The Month Jan 2014 [SatNav Power Down] [Coolant Level] [SatNav Repair] [Diesel Non Starting] [Paint Codes] [Rear Light Seals] [Reversing Light Switch] [Bleeding Brakes][Sunroof Drain] [Early ZT's][Instrument Pack Diagnostics][ATC Diagnostics]

9th December 2008, 10:25	#3
Simon Banned - Join Date: Nov 2006 Location: - Posts: 10,318 Thanks: 0 Thanked 4 Times in 3 Posts	Perhaps you could explain what exactly your heater/climate control does, or does not do. There maybe another explanation to your problems. The garage may well be correct but a second opinion from the members wouldn't go amis

9th December 2008, 11:44	#5
justmicky I really should get out more....... Rover 75 Saloon 1.8 Club SE Join Date: May 2008 Location: north west Posts: 2,160 Thanks: 0 Thanked 1 Time in 1 Post	Hi Pat, Welcome to the club. It was me that posted the link to this site in the yachting forum yesterday. I do hope you get sorted out with your heater problem real soon. This a great club -welcome

9th December 2008, 12:09	#6
PatLatham Newbie Rover 75 Conosoir 2.5L V6 Auto Join Date: Dec 2008 Location: Lincolnshire (South) Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts	Hello JM, and thank you for the link. I am going to swap the relays around as has been suggested, this afternoon, but could someone tell me where the resistor/transistor pack would be so I can try and identify which it is ? In response to the question of what exactly is wrong, this is quite simply that the blower motor is not blowing, so no warm air is coming into the car. On a manual type car I would expect some warm air to flow when driving along even without the motor running, if the heat setting was set high, but on this I seem to get nothing but a faint trickle of cold air, just enough to clear the screen, when on the move. Thanks for the help so far, and I'll get back with the result of changing the relays over.

9th December 2008, 14:51	#7
PatLatham Newbie Rover 75 Conosoir 2.5L V6 Auto Join Date: Dec 2008 Location: Lincolnshire (South) Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts	I have now swapped the relays over and I am afraid it has made no difference, the blower motor still doesn't blow.

9th December 2008, 20:19	#9
PatLatham Newbie Rover 75 Conosoir 2.5L V6 Auto Join Date: Dec 2008 Location: Lincolnshire (South) Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts	Thank you, I will carry out the check tomorrow and see what it says. I did manage to open the files so maybe I am a paid up member of something One thing I seem unable to find is the location of the transistor/resistor pack, could you say where it is ? I am a little confused though, does your comment refer to becoming a paid up member of this forum ? If that is the case then I am more than happy to join, as I have one or three other problems that I would like advice about. In which case, could someone point me in the direction for joining up ?.