water tank reads empty when full so no taps working - Motorhome Forums, Motorhome Discussion, Motorhome Chat

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post #1 of 18 (permalink) Old 17-07-2021, 13:31 Thread Starter
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water tank reads empty when full so no taps working

new This week Bailey alliance 66-2 my water guage reads empty but the tank is full it was ok first 2 days but now reads emty consequently the pump will not run

i have drained manually and refilled and switched of and on at the master panel without luck

can anyone help or wil i have to manage for the weekend until the dealer opens 80 miles away
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post #2 of 18 (permalink) Old 17-07-2021, 13:40
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I can't help you but try this forum - https://forums.outandaboutlive.co.uk*õ

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post #3 of 18 (permalink) Old 17-07-2021, 13:55
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Hi and welcome to MHF

That's an odd one I have never heard of a tank gauge controlling the pump.

Hopefully one of us will have an idea for you to check out.
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post #4 of 18 (permalink) Old 17-07-2021, 13:58
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Anything in here to help, it's worth downloading these manuals if it applies as they are easier to search and sometimes they stop supporting older vans.

https://www.baileyofbristol.co.uk/wp...ers-Manual.pdf
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post #5 of 18 (permalink) Old 17-07-2021, 15:08
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The sensors for fresh and waste water levels are normally a series of different length rods in each tank. They sometimes get stuck up with debris and give false readings. Never heard of any interaction between the level sensors and the water pump.

The most likely reason for the pump not working is air in the system. Make sure the water level in the fresh water tank is full - most vans you can find the top of the tank with screw top for inspection. Then open all the taps and wait until all the air is expelled. It can take some time!!
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post #6 of 18 (permalink) Old 17-07-2021, 15:18
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But it's natural to have air in the system, such as after winter or you run out, and of course, when it's new, I think there might be a more serious problem requiring a dealer, I'd just go and have bottled water, and a flannel for washing.
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post #7 of 18 (permalink) Old 17-07-2021, 15:42
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Is it a pressure operated pump, or a switched pump ? The manual should tell you that.

Like everyone else I have never heard of a pump controlled by the notoriously inaccurate gauges. If the pump is not running I would be checking the pump first, then the circuits as that is a likely site of a problem. Pumps do fail and are easy to replace.

If you are reticent to touch such things, and many are, then a dealer is the only answer, if you cannot locate a experienced user near you who is prepared to have a look.

The gauges are about as much use as a cat flap in a submarine. Even new ones fail fairly often and cannot be relied on. A visual check of the fill in the fresh water tank is the best answer, the waste water cannot be seen, but opening the drain valve usually gives a clue !

The taps will only work if the fresh tank has water AND there is power to the pump AND the pump works, checking each of those must be the route to identify the problem. But pressure v switched is vital, if you can see underneath a tap, check for thin wires, if you see those then it is probably switched, if not probably pressure operated. It is also worth checking the relevant fuses of course..

Do keep us informed what you find and feel free to ask for further advice if you need it, we have all had to learn at some stage.

Welcome to MHF anyway.

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post #8 of 18 (permalink) Old 17-07-2021, 15:51
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My brain was/is too hot for thinking today, but I think that's a pretty fair conclusion Dave.
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post #9 of 18 (permalink) Old 17-07-2021, 17:00
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Gauge and pump on the same fuse?
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post #10 of 18 (permalink) Old 17-07-2021, 18:12
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Reading post again, I think he says it's a new van? Think even more so it's air in the system!
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