In message , "Dave Plowman (News)"
writes
In article ,
Roger Mills wrote:
I've not come across ONCE as such, but I guess that it equates to the ALL
DAY setting which some controllers have - coming on at the start of the
first period, and remaining on until the end of the second period.

The pretty generic Honeywell

http://www.screwfix.com/prods/86588/...ng-Controls/Ho
neywell-ST699-Programmer;jsessionid=CKBQEHAJPBHCKCSTHZOCFEY

comes in both types. Only difference are the selector switches - and price.
They can be swopped with no alteration to the wiring, etc.

I've got a once/twice one here going spare after changing to a system
boiler. Just had a new battery too, if anyone is interested.


Thanks for the replies, very helpful.

Umm, yes, very interesting about the battery :-)

--
Mike Buckley
RD350LC2
CB72
http://www.toastyhamster.plus.com