Instructions for the user
25
1.15 Boiler shut-down
The boiler shuts down automatically if a malfunction occurs.
To determine the possible causes of malfunction, see Troubleshooting on page
92
.
Below is a list of shut-down types and the procedure to follow in each case.
1.15.1 Burner shut-down
Fault code E01
is displayed flashing on the display in the event of burner shut-down due to missing flame.
If this happens, proceed as follows:
• check that the gas cock is open and light a kitchen gas ring for example to check the gas supply;
• once having checked if the fuel is available, press the
button to restore burner operation: if, after two starting attempts, the
boiler still fails to start and enters the shut-down mode again, contact a service centre or qualified personnel for maintenance.
WARNING
If the burner shuts down frequently, there is a recurring malfunction, so contact a service centre or a qualified service
engineer.
1.15.2
Shut-down due to incorrect air/flue gas system draught
The boiler is equipped with a safety device for flue gas exhaustion check.
Should an air/flue gas system malfunction occur, the control device will shut-down the boiler by interrupting the gas supply to the boiler
and the LCD will display the code:
In this case, contact a Service Centre or a qualified service engineer to carry out the maintenance.
1.15.3 Shut-down due to low water pressure
1.15.3.1
KC model with automatic filling disabled (P94 = 0) and KR/KRB models
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 (see
Fig. 2 Filler cocks).
E04 error is displayed when system pressure drops below 0.4 bar; error will be automatically reset as soon as system pressure rea-
ches 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 filler cock anticlockwise
A
to fill the boiler with water.
Keep filler cock
A open until the control panel shows a value of 1÷1.3 bar;
Shut the filler cock by turning the know clockwise.
If the boiler still fails to operate, contact a Service Centre or a qualified service engineer.
DANGER
Make sure you close filler cock carefully after filling procedure is completed.
If the filler cock is not correctly closed, when the pressure increases, error E09 may be displayed and the heating system
safety valve may activate and discharge water.
A*
A*
A
KC
KR
KRB
Fig. 2 Filler cocks
(*) optional