scans
Hello Andy
I have sent a scan to the email address you have on here of the wiring diagram for the timer you have in your machine, this timer it would appear was fitted to various machines of that type.
It might take you a while to get to grips with it but it might help.
with regards to re-fitting the old timer to see if the programmer constantly rotating problem goes away why not, go ahead.
one other question, when you were looking at the water pressure bottle did you blow into the rubber tube that goes up to the water level/pressure switch, if you blow into it you should hear two clicks from the level/pressure switch these being the two pre-set water level switches inside the level/pressure switch, if you hold the air in tube as long as you can to see if the air is leaking out, it is just another thought, if the switch was faulty or the air seal on it, or the tube was leaking this again would cause the problem you have.
Gary