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- insufficient pressure of the water in the hydraulic core circuit (irregularity)
- Absence of draft on start (irregularity):
The boiler shutting-down in safety conditions.
The pressure visualizing
:
in case the pressure sensor measures an insufficient pressure of the water in the system, (<0,5
bar) the burner and the pump are deactivated and the flickering intermittent symbol Err E1
occurs on the display.
Disturbance of a temperature sensor (irregularity):
1.Sensor for the central heating water: any disturbance of the sensor caused by a wrong
contact or a short-circuit leads to the immediate deactivation of the burner, pump and the
flickering intermittent symbol Err E1 occurs.
2.Sensor for DHW: any disturbance of the sensor caused by the wrong contact doesn`t lead to
the immediate deactivation of the burner but to displaying the flickering intermittent symbol Err
E4 for monothermal boilers.
In case the pressure switch doesn`t commute the
TW pre-cleaning in due time, the boiler won`t start running and the intermittent symbol Err E5
will occur after 10 seconds. This irregularity vanishes when the flame is detected at the end of
the operating cycle.
-Removing the combustion products causes the activation of the safety devices (irregularity):
OPEN CHAMBER
The safety devices of the combustion products are activated and cause the boiler automatic
shutting down, the intermittent symbol E5 occurs on display. This irregularity disappears only
pressing the button SW3. In case the limit thermostat (LT) is activated, the system will shut
down automatically and the intermittent symbol Err E8 occurs on the control panel display. This
irregularity persists even if LT is deactivated. To reset the normal operating system it is sufficient
to press the reset button SW2.
In case the final user establishes that the appliance has an abnormal running, if the error codes
keep displaying or if the appliance manifestations can not be understood, he has the obligation
of shutting-down the boiler as soon as possible and in maximum safety conditions. The user
must perform the following operations:
* press STAND BY and the boiler shuts down
* disconnect the boiler from the electric power supply circuit by unplugging
* Disconnect the gas supply circuit by switching on the gas valves
* Interrupt the DHW and the DCW circulation by switching on the gas valves corresponding to
these circuits.
After boiler shutting down in maximum safety conditions, the user will call the service unit he
belongs to (see chapter 1, subchapter 1.4).
The pressure from installation is displayed and it is useful to installation filling up. The
beneficiary will check recurrently whether the pressure in installation has lowered below the
value set on filling.
The pressure will maintain between 1-2 bars. If the minimum pressure lowers below the value of
0,5 bars the boiler will display the E1 signal and it will shut down. If the pressure exceeds the
value of 3 bars, the safety relief valve will open and it will release the system from the
accumulated pressure.
