I would suggest faulty RPS - soap powder ruins them ( liquid less so )

the water valves are not very expensive - they may be available 2nd hand - try the scrappers earlier machines may use identical parts be very careful not to allow water to splash on or penetrate Motor Controller Panel etc it could / will blow-up

hallo there - in New Zealand we have a machine known as a 612 - the rps is very poorly designed ( worse than the older machines ) the horisontal wiring socket - traps soap powder you might be able to separate the wiring from the rps & clean it up using something like CRC etc ( & re-fit it etc ) --------------> better still there is a new part available with an integrated wiring loom you need to run the new sub cable up to the Motor Controller Module and plug it in and you need to cable tie the sub cable to the existing loom with afew modest cable ties

I wood suggest the Lid Lock solenoid has gone high resistance - should be 60 ohms the crxp internal 2 wire plug and socket can / will corrode out its within the lid lock mechanism - carefully solder the two wires & heatshrink them both up ( & have seen small screw terminal blocks used )