Went away in van last week after a break of about 4 months, main divert valve (to inboard tank/run off external source needed replacing) Any way whilst away had the constant problem of pump kicking in intermittently to presure up system, (when running off internal tank about 20 to 30 mins it would run for about 4 seconds) reverted to external water source and it would kick in ever 5 to 10 mins and run for about 15 seconds. could this be due to loss of water (is there a non return valve)
The outfit is a 2007 abbey spectrum 540 ta with ultrastore rapid/rapid xl tank, also went hot water tank in use the tap would splutter for the first few seconds as if starved of water. Any ideas/help would be great as mrs nearly ripping her hair out over this ??
------------- If its not broke, dont fix it, and stop nagging
This sounds likely to be the pressure switch in need of a tweak.
If the battery voltage is not constant, cycling may occur even at higher flow rates. This can be minimised by adjusting the switch’s diaphragm sensitivity as follows:
With the system properly primed, close all taps and showers.
Leave the power supply turned on.
Tighten the adjusting screw (clockwise). The pump should now be running.
Partly open one cold tap to allow water to flow.
Now slowly loosen the adjusting screw until the switch starts to click. The switch will then be properly
adjusted.
If there was a leak, you'd usually find the system running more than you've mentioned but worth checking any 'o' rings on external fittings.
many thanks for the reply, thats what I thought but few questions where is the pressure switch, I have checked as much as I can and cannot find any leaks anywhere, so would realistically think that could be the cause.
------------- If its not broke, dont fix it, and stop nagging
just possible you have a faulty non return valve on your truma ultrastore pipe and water is draining back into the aquaroll thereby reducing pressure.only working when pressure is back up.see
The non return valve would be located somewhere on the cold feed to the boiler, the water sounds as if it is backfeeding into the aquaroll and the non return valve will need replacing.
Kind Regards
Nicki Price
Truma Service
------------- the only silly question is the one you do not ask.
We had a problem with a leaking non-return valve on our folding camper the first time we used it. The clue was that the cold water in the Aqua Roll got warm as the hot water leaked back into it. It was fixed by removing the offending plastic swarf and refitting it. It was in the rear of the cold water inlet where the water comes into the van. Good luck.
ended up changing the non return valve, no joy. on closer inspection when running from the external source the overflow on the inboard tank is always flowing. suspect now faulty new flow control valve into tank no passing will renew this at the next opportunity . hopefully this should do it
------------- If its not broke, dont fix it, and stop nagging
i have the same problem with my abbey spectrum 540 2005.did the new flow control valve sort the problem ? and if so could you let me know where you got your replacement
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Topic: water system loosing pressure
