I spoke to the person that developed the system for Fleetwood when I had a warranty repair on my control screen and I put him the problems that I had found with the system.
The pump should cut out when the onboard tank is full. You have to stand there and watch the tank fill so you can switch it off before it overflows - answer - not enough memory in the panel.
Having to keep switching the panel back to the tank level screen when it resets to the time clock screen - answer _ Good idea we can alter the timing so it stays on for say five minutes.
Maybe there will be a simple mod on the newer models, not much help to people with the older version though.
Two other tips he gave me were:-
1. If you remove your leisure battery make sure you cover up the solar panel on the roof, otherwise problems.
2. Always switch off the pump before you switch off the control panel. Early models had a problem if this was not done but the thought it had been rectified now. To be on the safe side I do it now as a matter of course.