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
- posted
20 years ago