I recently purchased a Swift Challenger 1991 440/4 Caravan. While trying out the Caravan at the weekend I noticed after refilling my AquaRoll that the Carver Crystal Pump is staying on constantly even though all taps are off. I dont see any leaks and it doesn't look as though the water is not being used up in the AquaRoll.
My Uncle says he thinks it has something to do with the pressure and asked me to adjust a pressure screw to try and resolve the problem. I have no idea what he means by this as I cant see any adjustment screw.
I have disconnected the pump completely and draind the whole water system. Still the Pump Light stays on.
I had a similar problem with my Truma water pump. I messed around with the pressure valve to no avail. After lots of head scratching I found out the problem was debris in the aquaroll had been sucked past the inlet valve and wedged allowing water to run back into the aquaroll. The back pressure kept the pump restarting. After removing the twig all was well.
First you need to check which system you have , do you have any wires going to the base (underneath) of the taps , if you do you have a microswitch system . Or does the back of your water pump connection socket ( on the caravan ) have a large plastic screw , like this If you do you have a pressure switch system .
Hello Karen. We had a 1991 Swift Corniche and I assume that your system is the same as that. There is no pressure switch (unless someone has modified it). The system uses microswitches on the taps. If one of these is faulty then the pump will run continuously.These switches are available from caravan shops. Check the "screw-in" filter housing for cracks as this can cause probs.
Many thanks to you all for your comments and advice. They are all greatly appreciated. We eventually managed to source the problem - faulty microswitch. Now we just need to work out whether the sink lifts out or if the casing has to come off. Any ideas?
Some taps have the micro-switches in the top part of the tap so you might not need to remove the sink at all , i would try to pick a dealers brains as to how you replace the switch or post on here what type / make of tap it is and hopefully someone be able to tell you how to change it .
A similar question I think... just bought a 1996 440/4SE and plugged it into my car for the first time tonight and the water pump was constantly on? I had a look for a master switch and could not find one. The pump sits between the hot water tank and the battery, two wires come out of the pump and go into the cupboard where there is a fuse box thing and a battery charger but no switches to turn it off. The caravan has not been used for a year so battery is totally flat, hence why i had to connect to my car.
I saw from a post that you’ve had a Swift Corniche, se thought you might be able to help. We have a Swift Corniche 12/2 1985 with the original carver water pump. We’ve not had any problems previously, but whilst staying at a site with a 10 A supply, we’re not getting any water. All the caravan electrics work fine except the pump. It seems to be operating but there is little or no water coming from any of the taps (micro switch). When the taps are open, the lights on the zig electrical box flicker between red and green. Water goes into the filter but doesn’t seem to pass between the filter and the taps. We’ve checked the filter and pump and everything looks okay. The pump propeller turns freely. Does anyone have any ideas? Since my original medssage, someone has said that the pump runs of the 12v battery, but I’m confused .... Thanks
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Topic: Carver Pump on constantly
