The motor went in my valve head. (3 port mid position valve). I replaced
that. system still didn't work (hot water works ok with manual override). I
got a circuit diagram from internet and found - through a long drawn out
detection process that one of the microswitches had burned out. However, its
not a good diagram and doesn't exactly fit my system. My question is has
anyone attempted to replace these switches and is there a good site to learn
more about the electrical side of the system? (I'm loathe to buy a complete
new valve head).
Its not worth repairing really, the only answer is to fit a new valve. If
you do, make sure you get a electrical junction box as well. To save
removing wires from your wiring centre, cut the cable from your old valve
and wire the new valve to the old cable. Check first but 99% use the same
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