18
1.9.4.
Shutdown due to insufficient water pressure in system
If “shutdown due to insufficient pressure in system” error e04 starts flashing (indicating safety water pressure switch triggering), fill the system by
opening the filler cock (model KC) or the cock on the cold water supply pipe (models KR and KRB) (see fig. 2).
e04 error is displayed when system pressure drops below 0.4 bar and error will be automatically reset as soon as system pressure reaches 1.0 bar.
Water pressure must be 1-1.3 bars while the boiler is cold.
In order to restore water pressure, proceed as follows:
- turn the filler cock (model KC) or the cock on the cold water supply pipe (models KR and KRB) (see fig. 2) anticlockwise to allow water to enter the
boiler;
- keep the cock open until the control panel shows a value of 1÷1,3 bar;
- turn filler cock (model KC) or the cock on the cold water supply pipe (models KR and KRB) (see fig. 2) clockwise to close it.
If the boiler still fails to operate, contact a Service Centre or a qualified service engineer.
Make sure you close the cock carefully after filling. If you do not, when the pressure increases, error e09 may be displayed and
the heating system safety valve may activate and discharge water.
filler cock
fig. 2
filler cock
filler cock
MoDeL KC
MoDeL KRB
MoDeL KR
