Alde Heating/Ventilation (1 Viewer)

Jan 20, 2019
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Hi All

We have just taken our Pilote 716 out for our first weekend in the worst weather conditions of the year so far....

Anyway we sat down with all the manuals (of which there are loads) emptying fresh water filling it back up again purging the system, moving table positions sorting out TV emptying the grey waste and the cartridge for the loo getting our heads round the heating system!! Basically we have played with all the buttons!!
Anyway we have the Alde heating system which works very well but there is a switch at ankle height on the right hand side of the habitation door just below drinks cabinet (very 1970's). When you switch this on there is a whirring sound I'm sure its connected to the heating but not sure what it does?? Any advice greatly appreciated.
 

funflair

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Dec 11, 2013
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If I have to guess I would say it is the pump to preheat the engine through a heat exchanger, Do you have the heat exchanger option?

Martin
 
OP
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AG 2602
Jan 20, 2019
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If I have to guess I would say it is the pump to preheat the engine through a heat exchanger, Do you have the heat exchanger option?

Martin
I'm not sure I have asked the dealer who didn't know but to be fair to him he was on the end of the phone so not sure he knew what I was going on about. To be honest I've called him so many times I think he's losing the will!!:D:D
I have to go back in a few weeks to get an MOT and to sort any issues so I'm sure we will sort it then but its bugging me!!
 
OP
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AG 2602
Jan 20, 2019
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We have a similar switch on our Hymer & it controls a fan under the floor which pushes extra heat to the rear of the moho.
Now that sounds like we could be getting warmer (literally) If I was a betting man I'd say that this is it!(y)

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ctc

Oct 12, 2015
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If the switch only works on EHU its most likely engine pre-heat (very nice). Otherwise look for an air inlet, usually at the entrance, if so its a fan assist for the heating, could be a three position switch.
 
OP
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AG 2602
Jan 20, 2019
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If the switch only works on EHU its most likely engine pre-heat (very nice). Otherwise look for an air inlet, usually at the entrance, if so its a fan assist for the heating, could be a three position switch.
Probably a silly question but why would you need an engine preheat?
See pic but if you follow the steps up and around into the lounge then there are are vents around at floor level. However I cant feel much air coming out when the fan (if that's what it is) is on?
Switch.jpg
 
Oct 30, 2010
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On our Alde system there is a switch beside the drivers seat (LHD) which I often kick on by mistake.
There is an extra fan and radiator under the seat to give extra heat to the drivers feet.
If this is where your whirring sound is coming from you might have the same arrangement.

Richard.
 

funflair

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Probably a silly question but why would you need an engine preheat?
View attachment 290826

If it's -20C or -30C outside the engine quite likes to be warmed up before it starts and then of course you get a faster warm up for demisting etc.

Martin

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funflair

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Dec 11, 2013
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If the switch only works on EHU its most likely engine pre-heat (very nice). Otherwise look for an air inlet, usually at the entrance, if so its a fan assist for the heating, could be a three position switch.
You don't need EHU to operate the ALDE engine preheat.

Martin
 

Camdoon

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Sep 22, 2012
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Probably a silly question but why would you need an engine preheat?...
There is an optional Alde exchange facility so we have a button which heats the engine before starting off (gets engine up to speed quicker, helping screen clearance, fuel, wear and tear - freezing if etc) and while moving allows the engine heat to circulate thus saving gas while keeping the whole van warm.
 
OP
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AG 2602
Jan 20, 2019
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The whirring sound is coming from under the seat where the leisure battery is stored and there are some vents at floor level in this area.
 

ctc

Oct 12, 2015
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You don't need EHU to operate the ALDE engine preheat.

Martin
Mine only works on EHU I think the pump is 220v. The switch indicator doesn't light and the pump doesn't run unless on EHU.

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funflair

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Dec 11, 2013
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Probably a silly question but why would you need an engine preheat?
See pic but if you follow the steps up and around into the lounge then there are are vents around at floor level. However I cant feel much air coming out when the fan (if that's what it is) is on?View attachment 290826
If that is the switch it looks like it is more to do with the habitation side of things so yes quite possibly a fan of some sort.

Martin
 

ctc

Oct 12, 2015
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The previous owners had all sorts of weird things added and modified, I don't know why. When I bought it it had 2 owners ,2 years old and 2000 miles on the clock. The dealer who originally supplied it (Lowdhams) said it was constantly returned for extras and warranty problems (one was unable to tell the difference between cruise control and speed limiter) which accounted for all the mileage. So don't think my van is "standard".
 
OP
OP
AG 2602
Jan 20, 2019
845
1,861
Bristol
Funster No
58,131
MH
Pilote G740
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Since 2019
Thanks everyone the vans not at home at the moment but I will check out under the seat and see what I find.

Seem to think this might be heat distribution system when you first put heating on as it’s quite slow to warm up.

Thanks again
 

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