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switchmaster sm905?

can't seem to find a replacement for my heating controller; the timer doesn't go round. Is there a compatible replacement?

rob green
December 2005
Ours has packed up too - has anyone had any success sourcing a replacement?

Dave C
April 2011
does anybody know where u can get a new unit from
as my switchmaster sm 905 only works when it wants too thanks for any help

craig
February 2010
Hi , i'm having problems with the dial turning freely both ways - it would only turn clockwise before...is there a way to fix this problem or is there a digital alternative i could purchase?

K.Jones
December 2008
Hi, I recently mended mine by putting small pins to atatch the dial to the mechanisum that is turned by the small motor, I took it all apart and you can see where the small plastic lugs have snapped, you have to take off the small horse shoe clip on the back and then the dial will slide out from the front, take note of the positions of the small plastic tags on the metal arms, the ones you use to set the time of the controls as they must go back the same, once it is all apart use a small drill, about 1mm, you will need 2 drill bits, and drill through the dial and the cog and then snap off the plain end of the drill bit to use as a pin, about 8mm long and push it into th hole conecting the 2 pieces, do this the same on the other side and then reasemble...
This is quite a fiddly job and I only did mine as I couldnt find any new or second hand ones, I did this on mine about 6 months ago and touch wood it has been fine since,,
Hope this helps

Jonathan Cooper
December 2007
HI I HAVE SOME NEW ONES IN STOCK PRICED AT 50.00 EACH

NEXT DAY DELIVERY FOR 7.00

PLEASE CALL 02380 237557

PAUL
August 2007
Mine has stopped working...basically the dial no longer goes round, you can turn it by hand and it will work for a short peroid. I have purchased a 2nd hand unit which seems ok but the unit is getting warm so I just want to get a new unit if anyone knows of a compatible one to replace the SM905?
tHANKS

SNODDY
June 2007
I also have this same problem. Any help is greatfully received

Gavin Still
May 2007

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Find out how to mend Switchmaster home heating systems