2015 citreon relay heater fan motor replacement (1 Viewer)

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Apr 22, 2018
6,888
12,719
Herts.
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53,503
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Adria Coral lowline
Are you sure it is the motor, not the knob, or resistor pack which is a much more common item to fail.
 
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Jan 2, 2015
2,493
8,716
Cumbria
Funster No
34,615
MH
Burstner Solano t725
Exp
since 2014
Have a look on Youtube using Fiat Ducato and Peugeot Boxer as well as the Relay.

Easiest to check is the fan itself under passenger glove box. One 5.5mm hex bolt and twist the fan housing. Take a couple of photos first. On our Ducato I had to remove the passenger footplate, to give enough room for the fan to drop down.

Remove plug and test if fan runs under direct power.

Next simplest to check is the heater blower motor resistor. Again search YouTube. It is next to the fan motor with again, one 5.5mm hex bolt and the resistor slides sideways out of the housing. There is a video showing how to test it using a multimeter but a new one is a tenner off Ebay. I understand that the resistor creates the required power for the three slower speeds but the high speed 4 is direct wired to the fan motor. So a pointer to look for is that if the fan is working on speed 4 but not on the other three, 1, 2 & 3 then the resistor is probably duff.

The speed selector switch requires more access work, but again there are a couple of videos showing how. I am waiting for delivery of a new switch but I understand with a bit of dexterity, it can be done from behind without removing the full control module.

20221102_213142.jpg


The unit marked with the red arrow is the switch. The red shaft that can be seen within the switch is turned by the dial at the front to control speeds 1,2,3 &4 on the fan.
I understand that if you remove the 2 Philip's screws and ease the switch of the two white locating lugs above the screws, the whole switch will slide out. Remember to set both new and old switches to the same setting so that the flat on the red shaft will go back in.

When the one I have ordered...

Screenshot_20221102-214030_Chrome.jpg

arrives, I intend to put the power plug into the new switch before removing the old switch to see if the new switch powers the fan before fitting it.

Good Luck

You can buy Chinese copies of the switch for about a tenner but the dearer one is OEM.
 
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smiimon

Free Member
Apr 1, 2023
2
1
Funster No
94,943
MH
vauxhall movano
Have a look on Youtube using Fiat Ducato and Peugeot Boxer as well as the Relay.

Easiest to check is the fan itself under passenger glove box. One 5.5mm hex bolt and twist the fan housing. Take a couple of photos first. On our Ducato I had to remove the passenger footplate, to give enough room for the fan to drop down.

Remove plug and test if fan runs under direct power.

Next simplest to check is the heater blower motor resistor. Again search YouTube. It is next to the fan motor with again, one 5.5mm hex bolt and the resistor slides sideways out of the housing. There is a video showing how to test it using a multimeter but a new one is a tenner off Ebay. I understand that the resistor creates the required power for the three slower speeds but the high speed 4 is direct wired to the fan motor. So a pointer to look for is that if the fan is working on speed 4 but not on the other three, 1, 2 & 3 then the resistor is probably duff.

The speed selector switch requires more access work, but again there are a couple of videos showing how. I am waiting for delivery of a new switch but I understand with a bit of dexterity, it can be done from behind without removing the full control module.

View attachment 684412

The unit marked with the red arrow is the switch. The red shaft that can be seen within the switch is turned by the dial at the front to control speeds 1,2,3 &4 on the fan.
I understand that if you remove the 2 Philip's screws and ease the switch of the two white locating lugs above the screws, the whole switch will slide out. Remember to set both new and old switches to the same setting so that the flat on the red shaft will go back in.

When the one I have ordered...

View attachment 684413
arrives, I intend to put the power plug into the new switch before removing the old switch to see if the new switch powers the fan before fitting it.

Good Luck

You can buy Chinese copies of the switch for about a tenner but the dearer one is OEM.
hi mate, i have a vauxhall movano 2022 same as ducato, relay boxer etc. The blower has stopped working at all, not even flat out. did you have same symptoms? did you mange to fix it? thanks

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Upvote 0
Jan 2, 2015
2,493
8,716
Cumbria
Funster No
34,615
MH
Burstner Solano t725
Exp
since 2014
did you mange to fix it? thanks
Yes. Once the new switch arrived, it was a bit of a fiddly job but doable.
I took the small "box" that sits above the radio out and then the radio and its cage out this reveals an opening like this....

IMG_20221104_140720.jpg


This allows you to take out the clipboard/ map holder that sits on the top of the dash. With this out you can put your head towards the windscreen and see down to the back of the blower fan switch.



You then have to remove the multi plug. I can't remember if there is a retaining screw to release this or a pressure clip. I had to remove a separate smaller lead and white plug for the Aircon.

Once the plug is removed, there are two very small Phillip's screws, one either side of the body of the switch as well as two locating pegs.

20221102_213142.jpg


IMG_20221104_125128_edit_6664026416169.jpg


Because of limited room to access these screws, I had to shorten the handle of a suitable Phillip's screwdriver and make sure the tip was magnetised. Once these two screws were removed it was a case of wiggling the switch to get it off the locating pegs.

Once released the fault on the switch was obvious. Something had shorted out.

IMG_20221104_110627_edit_6721617166682.jpg


Refitting was the reverse which was equally as fiddly! On the OEM replacement switches there is a red plastic rod that rotates the switch and there is a flat for formed on the end which locates into the front blower control so try not to move these controls at the front so that the flat lines up!!

heater-blower-resistor-switch-fiat-ducato-since-2006.jpg


I found that by using blu-tack to fix a small vanity mirror inside the "cavity" I was able to see what I was doing. I had previously tried the engineers telescopic mirror but benefitted from having another hand free!

I bought my new switch off Ebay but the seller is currently showing out of stock!

Screenshot_20230401-202239_Chrome.jpg


Good Luck
 
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smiimon

Free Member
Apr 1, 2023
2
1
Funster No
94,943
MH
vauxhall movano
wow good job fella great info thanks for that ill give the job of atleast having a look at the switch connector pins a go
 
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CAB96

LIFE MEMBER
Jan 31, 2021
894
1,814
Stockport, UK
Funster No
79,035
MH
T6 Leisuredrive
Exp
4+
hi mate, i have a vauxhall movano 2022 same as ducato, relay boxer etc. The blower has stopped working at all, not even flat out. did you have same symptoms? did you mange to fix it? thanks
Surely a 2022 van is still under warranty?
 
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