Update Re: Gas Boiler constantly going on and off
Folks,
Have done some more testing (after getting a 400 yoyo gas bill for Oct/Nov).
With thermo. off d/s and on max (~30) upstairs the boiler comes on and heats up then after 45 mins or so it starts into its on/off bouncing routine. it continues to do this until it is either switched off manually or, if on timer, the timer cuases it to switch off. At this point it stays off.
It appears to be incapable of staying off when under thermo. control. Bouncing takes longer to start when boiler thermo. and zone thermos are maxed.
Does this info. make it easier for anyone else to diagnose? I'm waiting since yesterday for a response from the builder and from the calor rep.
Many thanks,
N.