4 hours ago Jo asked ... How to engage clutch on old sewing machine to engage needle?    |    Jacky asked ... Miele Vacuum cleaner?    |    Ben asked ... Toyota Yaris French or Japanese?    |    Andy asked ... How can I mend my MacAlistair 450w hedge trimmer?    |    Felix asked ... Hitachi vt-m70em?    |    Click here to ask your question

wiring on a SM905 switchmaster timer?

Could someone explain the wiring on the timer. The central heating is working fine, but when we just need the water on it does not work. I think it has been wired up incorrectly
Sue, April 2009
link Click here to see other fixes for Switchmaster.