if pump stays on longer than normal indicates a temperature fault either from thermostat or overheat stat
paul, June 2007
the suprima itself is not a pressurised boiler, but there is a pressure kit for it and the system itself could be pressurised as the suprima does have an overheat stat.
gary.wright53@googlemail.com, June 2007
Suprima isn't a pressurised boiler is it?
T.h.s, June 2007
do you have sufficient water in the system?
is your system pressurised?
