B584 heater fan problem - Motorhome Forums, Motorhome Discussion, Motorhome Chat

User Tag List

 2Likes
  • 1 Post By Pudsey_Bear
  • 1 Post By rayc
 
LinkBack Thread Tools
post #1 of 8 (permalink) Old 02-11-2018, 20:21 Thread Starter
Junior Member
 
Join Date: Nov 2018
Location: Exeter, Devon
My Motorhome: 2002 Hymer B584 (bar version) on FIAT Ducato base
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
B584 heater fan problem

Hello. We have a 2002 new-to-us lhd B584. Generally, it's great but the heater fan only works on top speed. I gather this is a common problem caused by the resistor / rheostat and that it's not too difficult to replace. However, I am really unsure how to get at it, and the photos I've seen so far don't look anything like our arrangement. I believe it might be a question of removing the lower dash area but am really not sure where to start. I'm worried that 16 year old plastic may not be very forgiving!

Can anyone shed some light on how to get to the right area? We are in Exeter if that helps at all!

Regards
Mike
Mikewill is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 02-11-2018, 20:45
Senior Member
 
rayc's Avatar
 
Join Date: Jun 2008
Location: Corfe Mullen, Wimborne Dorset
My Motorhome: Pilote 740C Sensation
Posts: 7,086
Thanks: 66
Thanked 216 Times in 195 Posts
Personal Aire
Quote:
Originally Posted by Mikewill View Post
Hello. We have a 2002 new-to-us lhd B584. Generally, it's great but the heater fan only works on top speed. I gather this is a common problem caused by the resistor / rheostat and that it's not too difficult to replace. However, I am really unsure how to get at it, and the photos I've seen so far don't look anything like our arrangement. I believe it might be a question of removing the lower dash area but am really not sure where to start. I'm worried that 16 year old plastic may not be very forgiving!

Can anyone shed some light on how to get to the right area? We are in Exeter if that helps at all!

Regards
Mike
The resistor pack is a simple plug in to the blower motor. You can normally see it by looking upwards in the lower dash. The resistor pack is bypassed on high speed and that is why it works on that position. Look on eBay for Fiat Ducato X244 heater resistor.
rayc is online now  
post #3 of 8 (permalink) Old 02-11-2018, 21:10 Thread Starter
Junior Member
 
Join Date: Nov 2018
Location: Exeter, Devon
My Motorhome: 2002 Hymer B584 (bar version) on FIAT Ducato base
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Thanks Ray. There seem to be several quite different variants, so need to find the faulty one first. I'll go and lie on the floor and see what I can see!
Mikewill is offline  
 
post #4 of 8 (permalink) Old 02-11-2018, 21:12
Senior Member
 
Join Date: Jun 2007
Location: Belfast
My Motorhome: Hymer Exsis-i 504
Posts: 5,202
Thanks: 193
Thanked 269 Times in 256 Posts
Welcome to the forum Mike - if you're as old as the rest of us, make sure there's someone on hand to help before you lie flat on your back on the floor 😉

Jean
jiwawa is offline  
post #5 of 8 (permalink) Old 03-11-2018, 08:45
Senior Member
 
Pudsey_Bear's Avatar
 
Join Date: Sep 2008
Location: Leeds, Gods County.
My Motorhome: 2000 Autotrail Mohican on Sprinter base
Posts: 35,916
Thanks: 1,389
Thanked 894 Times in 836 Posts
Personal Aire
Send a message via AIM to Pudsey_Bear Send a message via Yahoo to Pudsey_Bear
They are a little odd to remove I recall, there is a small screw, then you have to slide it to one side, this video has the same resistor pack although it is a Fiat car, might be worth doing as he did and try a quick fix although I got mine new off Ebay for about 12 delivered.


Pudsey_Bear is offline  
post #6 of 8 (permalink) Old 03-11-2018, 12:27 Thread Starter
Junior Member
 
Join Date: Nov 2018
Location: Exeter, Devon
My Motorhome: 2002 Hymer B584 (bar version) on FIAT Ducato base
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
I find getting a 30 something in works too!

And thanks Kev ... looks like it's common to lots of models.

Last edited by Mikewill; 03-11-2018 at 12:28. Reason: more added
Mikewill is offline  
post #7 of 8 (permalink) Old 03-11-2018, 12:45
Senior Member
 
Pudsey_Bear's Avatar
 
Join Date: Sep 2008
Location: Leeds, Gods County.
My Motorhome: 2000 Autotrail Mohican on Sprinter base
Posts: 35,916
Thanks: 1,389
Thanked 894 Times in 836 Posts
Personal Aire
Send a message via AIM to Pudsey_Bear Send a message via Yahoo to Pudsey_Bear
Yes it's is a problem on all kinds of vehicles, not limited to Fiats.

I think I got a 30 year old in, I'd be in deep ****.
Mikewill likes this.
Pudsey_Bear is offline  
post #8 of 8 (permalink) Old 03-11-2018, 13:47
Senior Member
 
rayc's Avatar
 
Join Date: Jun 2008
Location: Corfe Mullen, Wimborne Dorset
My Motorhome: Pilote 740C Sensation
Posts: 7,086
Thanks: 66
Thanked 216 Times in 195 Posts
Personal Aire
The question of how the blower fan works comes up very often. On the Fiat X250 There is a positive supply to the motor whenever the ignition is ON via a relay and fuse in the engine fusebox. The negative to the motor is fed from a chassis connection to the switch which selects which resistor to put in circuit to alter the speed. On high position the resistor pack is bypassed making a direct connection.
The first attachment shows the wiring diagram for the negative supply. The second the complete schematic with the positive side also shown.
C016 Chassis

H081 Switch

O030 Resistor pack

N085 Motor
Attached Images
File Type: jpg Ducato X250 Heater control circuit copy.jpg (10.4 KB, 2 views)
File Type: jpg Ducato X250 Heater control circuit.jpg (58.8 KB, 3 views)
Pudsey_Bear likes this.
rayc is online now  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Motorhome Forums, Motorhome Discussion, Motorhome Chat forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome