Fiat Ducato Dethleffs taps not working - Motorhome Forums, Motorhome Discussion, Motorhome Chat

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post #1 of 4 (permalink) Old 29-04-2021, 14:37 Thread Starter
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Fiat Ducato Dethleffs taps not working

Good afternoon everyone, I recently bought an old timer 1990 Fiat Ducato Dethleffs, the taps are not working, this model has the water tank under the passenger seat and is filled from inside the door, the Truma Boiler B100 is under the drivers seat, the boiler is working and when it is switched on I can hear it on, would anyone know where the pump for this type tank is located? Does the seat have to come off to access the pump? Thank you in advance, I really need to sort this out before I go anywhere, the leisure battery is fully charged, everything else is working bar the pump and also the toilet pump.
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post #2 of 4 (permalink) Old 01-05-2021, 23:13
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Hi RScimitar, sorry your post seems to have been missed.

What model of Dethleffs is it? The fitments in the habitation area will be associated with the Dethleffs model rather than the Fiat base.

Can you hear the pump at all? If you can, it's likely that the system needs to be primed. When the water system has been drained (as it will have been over winter) the pump needs to fill all the pipes, and the boiler, before you'll get water from the tap.

So, assuming there's water in the tank, just open the taps (I set to hot water first which can take a while cos it fills the boiler) and wait till the water starts to splutter out the tap (stand clear!). Let it run till the air is cleared. Then turn to cold water setting to purge any further air in those pipes.

If you DON'T hear the pump at all there's maybe a switch that turns off the 12v to the taps and toilet flush (mine is beside the control panel above the door) - it's there so you can leave your taps open after draining for winter.
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Jean
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post #3 of 4 (permalink) Old 02-05-2021, 07:43
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As Jean has stated there is likely to be a switch to turn on the water pump.
I think the pump will more than likely be in the fresh water tank. A submersible type which are very common in leisure vehicles.

Frank
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post #4 of 4 (permalink) Old 02-05-2021, 11:43
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If you Google ‘Dethleffs owners club’ there are several options for specific advice eg U.K. forum etc and perhaps dedicated Facebook groups.

Good luck

Terry

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