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how do i turn on the timer on a saunier duval 623?

I recently moved into a house with an sd 623 but the timer appears not to work. Is there a switch to turn it on ?

dave denham
September 2007
Saunier DuvalHeating, Home Heating SystemsMoved House Work
The timer is connected to a relay and this is probably the fault.
You could try holding all the buttons for a few seconds until you hear a click. This would reset the clock to zero. If not replacement is required or bypassing the clock.

Alan Corbet
September 2007
change the timer - i found he is selling cheap contact below

Do you know anyone who wants to buy a timer mechanism for a Saunier Duval Combination Boiler model SD623? I have one that I will sell cheep! ...
lemonte.pitas.com/ - 27k - Cached - Similar pageshe timer

friend in need
September 2007

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