Fisher & Paykel two draw dishwasher electronic panel problem?

My two draw Fisher & Paykel dishwasher has problems with the settings changing while it is idle (loading) such that we have to keep the draw slighly open and the draw switched off until we need to use it. If the draw is closed and then re-opened, the panel powers up, and then starts changing to many of the cycle settings all by it's self. It will usually end up stopping on a HP (I assume High Pressure) error code. At present we use the dishwasher by keeping it powered off until we are ready, then hit the power-on and quickly follow with the start button. The cycle works fine once it starts. This problem occurs on the electronic panels for both draws. Can I repair this unit so that the panels are not so sensitive and can be left on during the loading phase? I am a qualified electronics technician, but have not attempted to fix this unit as yet, in case I make the problem worst