I have just installed a Ravenheat RSF84ET boiler and new system,after
warming up it fires up for 40sec then shuts down for 40sec and carries
on like this all the time until I shut it down, all the rads get hot
and I have hot water as well, this does not happen when I switch to
just hot water mode. Any ideas ??
This is the first time I have had or fitted central heating in my
home.
Graham