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Old 17-01-2018, 19:30 Thread Starter
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Ducato "additional heater" under drivers seat

Hi

We know we have an "additional heater" under the drivers seat of our 57 plate Ducato that should blow heat towards the rear of the moho and we know there is a switch on the dashboard to turn it on (as referred to in the manual) but it seems like the fan works fine but doesnt blow any warm air, its cold

We havent had a good look under the seat but there would appear to be some pipes running under there, does anyone know if these should get hot to supply the heat? and does anyone know if there's a valve somewhere that has to be opened to allow the heat through?

I have googled but other than some vague references on Motorhome Fun I cant find any other info anywhere

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Old 17-01-2018, 19:43
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Quote:
Originally Posted by Kaytutt View Post
Hi

We know we have an "additional heater" under the drivers seat of our 57 plate Ducato that should blow heat towards the rear of the moho and we know there is a switch on the dashboard to turn it on (as referred to in the manual) but it seems like the fan works fine but doesnt blow any warm air, its cold

We havent had a good look under the seat but there would appear to be some pipes running under there, does anyone know if these should get hot to supply the heat? and does anyone know if there's a valve somewhere that has to be opened to allow the heat through?

I have googled but other than some vague references on Motorhome Fun I cant find any other info anywhere
It is heat from the engine circulating system and there will be a valve in the circuit which is probably closed.
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Old 17-01-2018, 19:52
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Quote:
Originally Posted by Kaytutt View Post
Hi

We know we have an "additional heater" under the drivers seat of our 57 plate Ducato that should blow heat towards the rear of the moho and we know there is a switch on the dashboard to turn it on (as referred to in the manual) but it seems like the fan works fine but doesnt blow any warm air, its cold

We havent had a good look under the seat but there would appear to be some pipes running under there, does anyone know if these should get hot to supply the heat? and does anyone know if there's a valve somewhere that has to be opened to allow the heat through?

I have googled but other than some vague references on Motorhome Fun I cant find any other info anywhere
I had one of these in my 2009 Chausson. It is connected into the engine coolant circuit. As you know it is switched on with a switch with a fan type icon on it within the switch panel to the right of the steering wheel i.e. the MODE, headlight level switch panel. I cannot remember any other isolation valve just for the water flow but see last sentence. Perhaps it has an airlock? I assume the cab heater is ok?
If you lift the floor battery cover off you should be able to see the flow and return pipes to the heater. Is the flow getting hot?
Is the auxiliary heater T'd into it with a separate isolation valve?
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Last edited by rayc; 17-01-2018 at 20:24.
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Old 17-01-2018, 20:14
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This linked forum discusses the auxiliary heater. It is said "A switch to the right of the steering (RHD) were the mode controls for the dash are is pushed and a solenoid under the cab heater is meant to open to allow coolant through and a fan is also meant to come on. this is how I think it works is this correct?"

The OP on that forum did sort the problem out.

http://forums.outandaboutlive.co.uk/...-Ducato/47889/
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Last edited by rayc; 17-01-2018 at 20:16.
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Old 17-01-2018, 20:17
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On previous Pilotes that I have owned with that system there has always been an isolation tap in the feed supply pipework.
On the Pilote it is very close to the heat exchanger.
It does need to be isolated in the Summer to stop unwanted heat transfer.

.
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Old 17-01-2018, 21:22 Thread Starter
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I shall go and investigate... if it ever stops raining, or more precisely I shall send my other half to look although he can't find his pants and socks in his drawer if they are not at the front so perhaps I should just go look myself

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Old 17-01-2018, 22:56
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Does anyone know if these additional heaters were optional extras or fitted to all Fiat Ducato?
I have never heard of these before.
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Old 17-01-2018, 23:27
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Quote:
Originally Posted by jo662 View Post
Does anyone know if these additional heaters were optional extras or fitted to all Fiat Ducato?
I have never heard of these before.
See Option Code 906 on listing in link.

http://www.fiatprofessionalpress.co....ices_jul11.pdf

Terry

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Old 17-01-2018, 23:31
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See Option Code 906 on listing in link.

http://www.fiatprofessionalpress.co....ices_jul11.pdf

Terry
Thank you for the link Terry.
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Old 17-01-2018, 23:41
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My Ducato is also a 2007 model with the rear heater fitted.
I've only ever operated it by the dashboard push button and have no idea if there is an isolating valve. There is no discernible heat coming from it when it is switched off.
It is very effective, so much so that when it's on the dog comes up, in shorts and sunglasses, begging for an ice-cold lager!
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