I’ve been back to this machine to change the ntc which I found was rather loose. the toc had tripped again checked the condenser hose and jet all clear valve reads at about 4.6k machine runs, heats, blows, pump runs intermittently but in the nine or ten minutes I ran it there was no supply volts to the valve. all connections look good looks like a board fault unless anyone knows different e.g. does it take longer before the valve kicks in or would a load make any difference?
thanks wilf