Water pump

us2

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Subject:

Water pump

 ·  Posted: 01.10.2012  ·  #1

Hello All, My Water pump on my 1994 Dethleffs globetrotter is running non stop even when I dont have any taps on.Had t.o switch off the 12 volt button to stop it,and this means I cannot use the lights etc.Taps are working normal when turned on and off but pump keeps humming away.No sign of leaking water inside or out ,Any help would be great .Thanks Cool

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Ally

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Subject:

Re: Water pump

 ·  Posted: 01.10.2012  ·  #2

Seen a similar thing this weekend in someone else's MH. It was caused by a deteriorating Leisure battery, could that be it?

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us2

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Subject:

Water pump

 ·  Posted: 01.10.2012  ·  #3

Hi Aly,Tried the lights and taps etc, does not seem to be low battery.Have another battery and will charge it and put it in and see if it helps.Thanks for the reply.Cool ,Dublin.

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Exbiker

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Subject:

Re: Water pump

 ·  Posted: 01.10.2012  ·  #4

Hi, I had a similar problem on my last M/H 1993 Autotrail, caused by low water level in the tank, when the tank got low and we were driving then stopped the pump wouldn't stop, put some water in pump stopped and returned to normal. I felt it was the system sucking air when the water is sloshing around, one solution we found was to only drive with pump turned off. Good Luck, Bill

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Subject:

Re: Water pump

 ·  Posted: 01.10.2012  ·  #5

If it is none of the above suggestions it could be a faulty micro switch in one of the taps.
This would be more difficult to locate so I would try all the other things first.

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us2

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Subject:

Re: Water pump

 ·  Posted: 01.10.2012  ·  #6

Thanks Lads ,will give all that a go and let you know.

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digger

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Subject:

Re: Water pump

 ·  Posted: 01.10.2012  ·  #7

Hi John
my pump will run constantly if water level is low. It tries to keep the boiler full to avoid airlocks
Brian

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Deirdre

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Subject:

Re: Water pump

 ·  Posted: 01.10.2012  ·  #8

Quote by Ally

Seen a similar thing this weekend in someone else's MH. It was caused by a deteriorating Leisure battery, could that be it?

John, yes our water pump would not switch off, when we swapped the battery with somone elses it turned off immediately, although the battery was grand on the lights but obviously didnt have enough power for the water pump. Also we thought our roof fan wasnt working, again it was just the crappy battery (it was 4yrs old)

The roof van is now miraculously working again.

Dee

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eirebus

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Subject:

Re: Water pump

 ·  Posted: 01.10.2012  ·  #9

4 yrs is good for a motorhome battery i have never got past the 3 year mark with either van or leisure batterys had 1 in a car for 8 yrs though

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us2

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Subject:

Pump Problem

 ·  Posted: 02.10.2012  ·  #10

Hi Everyone,Thanks for all the replies,have a bit of time today and will try all the tips I got and will let you know what works ,thanks again to you all,great forum.

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us2

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Subject:

Pumps

 ·  Posted: 06.10.2012  ·  #11

Hello all ,The problem with the pump running all the time was a faulty kitchen tap switch.Changed the micro switch in the tap and all is well. Cost £4 in Downshire Caravans ,Banbridge,Co.Down.Thanks for all the replies,Cool

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Ally

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Subject:

Re: Water pump

 ·  Posted: 06.10.2012  ·  #12

Glad you got it sorted!

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adrianoconnor

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Subject:

water pump noise

 ·  Posted: 22.10.2012  ·  #13

Hi there,
I've a carado a464 and I discovered that if the oven light was on so was the hum from the water pump.Turn off the light and the pump went silent. Obviously a wiring problem in the van. So try out all switches that are not even related to the water system. Good luck.
Adrian

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