home Fix label Heating label_important Home Heating Systems category Switchmaster

Again can SM905 be repaired as timer cannot get past 'notches'?

As with other's, my acl switchmaster sm905 timer will not go round. The timer works in twice mode but not in once mode as timer cannot get past the notches. We need to replace with same so can fit wired backplate (or can others fit?)

Seems no one can answer - can you?

Thanks

Roy, June 2007

home Fix label Heating label_important Home Heating Systems category Switchmasterdone

this will need re-wiring.....

alan, July 2007

You should find that you can buy a compatible replacement for the SM905 which should slot straight onto the existing backplate.
If not providing you make a note of the correct wiring combination it is not that difficult to replace the backplate as well as the timer.

gary.wright53@googlemail.com, June 2007

link Click here to see other fixes for Switchmaster.

Fix Fault - Heating

home label Heating label_important Home Heating Systems

home Fix label Heating label_important Home Heating Systems category Switchmaster

Again can SM905 be repaired as timer cannot get past 'notches'?

I can answer this question...

Again can SM905 be repaired as timer cannot get past 'notches'?

I can answer this question ...

Again can SM905 be repaired as timer cannot get past 'notches'?

BMU error code?

Canon caress 2000 gas fire?

Fan tries to run every 15 seconds then stops immediately?

Boiler cycle?

Oil fired boiler thermostat?

F40 fault?

Remove boiler cover?

Greenstar 25 combo boiler?