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have now stripped down the timer /programmer no contact corrosion or oxidation all contacts nice and clean, open relay covers cant see any thing adrift there once again contacts clean, un soldered the lithium batt to see if the chip clock would reset ,( but did not) no DJs the only thing left is...

the red neon you refer to I assume to be the red light on the timer/programmer to which is not working on the HW side, CH light switches on and off the HW light not working , as I said before you cannot here the relay in the timer click when the you use the timer /programmer manually for HW...

I have seem to have lost control of the water side of the programmer/timer The system is working but only on the (CH) side I have carried out some checks and it would be helpful if somebody would comment on them or advise further test I could carry out checked the 3 port M valve and it...

this one is fun ay commenting on the post that says "the micros would not be activated because the quadrant would not move" my whole point was that the micros were tilted in such a manor that the micros were both making when the quad was at the non energised park position

just a quick reply i think the reason for the problem was that both the micros were making at the same time I dont kown the total ins and outs of them and bow to your experience. I have since re solderd the original micros on the board now mathching the new one, this one now works ok as well...

using the great advice from you guys i have solved the problem, and it was the switches basically the top micro was making at the wrong time due to the tilt on the switch I used the board from the old M/valve and walha all working. It just goes to show how important communication is. Iam happy...

thanks once again for the comprehensive advice i have printed this of and i will keep this , I can verify that the valve is defiantly the correct way round , i can also verify the three position work I am intend to remove the pcb from the old unit and re install it in the new one to see if...

thanks for the definition i can work back from that without takeing volt readings At present cant comment on that part ,however seeing that the boiler is firing up and the pump running i think i can assume that all is ok there, would i be right in saying that the cylinder stat would also...

oh yes all is the same Iam practiced at this as i have replace every couple of years , its the switches that are puzzling me, on the one a took out the switches are soldered parallel to the pcb, on the new one the switches are tilted towards the cam on the spring loaded pivot one with red...

have recenty changed a 3port m/valve , i now have the problem with the rads heating when the hot water is on the m/valve seems to move correctly 1st - inside the electrics cover of the m/valve there are 2 micro switches what do they control , reason ( the switches on the new unit seem to...