Opening The Casing; Faults; List Of Faults; Faults History - Ferroli KONA 12 Operating Instructions Manual

KONA

3.3.2 Opening the casing

To open the casing:
1 Undo the screws
2 Remove the front panel
3 Disconnect the display panel cable
Disconnect the power supply and turn off the gas
valve before carrying out any operation inside
the unit.

3.4 FAULTS

The water heater has an advanced self-diagnosis system. In case of a fault in the unit, the display will flash together with the fault symbol indicating the
relevant code. At the same time, an acoustic signal sounds. If a fault occurs, all the gas valves are turned off immediately. The fan keeps running for 30
seconds until stopping. With fault E2, the fan will continue to run until the flame signal disappears, after which it will stop
after 30 seconds.
To restore operation of the unit after an error, just turn off the hot water tap, or touch the Standby button to put the water heater in STANDBY mode.
In case of fault E2, to reset the water heater the user must disconnect and reconnect it. If the fault persists after these reset
steps, troubleshooting is required.

3.4.1 List of faults

Code Fault
Outlet temperature probe
E0
fault
E1 No ignition or no flame
Presence of a flame fault or
E2
parasite flame
Overheating safety thermo-
E3
stat
E4 Inlet temperature probe fault
E5 Fan fault
E6 DHW overheating
E7 Valve fault
Pipe blocked
E8
DHW timeout
En
EC / Ec Display panel connection

3.4.2 Faults history

From the STANDBY condition , keep the "
By touching the Standby button, the last 10 faults that occurred in the water heater start appear. At this point the lower display shows the last fault
code generated, while the upper display indicates "01", starting to list the faults that occurred. By scrolling them (01~10), the last ten water heater fault
codes are displayed. Touch the Standby button to exit the faults history.
Touch the " " button to go from "HI" to reset "rE" faults; starting from this option, keep the ECO button pressed for 5 seconds to delete the history
(the 10 faults) and at the same time exit the interface. From one of the two modes, "HI" or "rE" , keep the "
faults history interface.
Water outlet NTC temperature probe sensor open or shorted
The system does not detect a flame after two ignition attempts, or there is no flame during normal operation
The system detects the flame before startup or after the system stops for 5 seconds
Overheating safety thermostat circuit interruption
Water inlet NTC temperature probe sensor open or shorted
Speed constantly below 600 rpm for 2 s, or the system is unable to detect the speed signal
Water outlet NTC probe sensor temperature above 85 °C for 5 s
Valves activating shorted transistors or valve open circuit
Fan speed higher than the antiwind pressure warning speed preset by the software, or higher than the HC or LC values
indicated in the parameters menu (see parameters HC and LC)
Maximum continuous heating time, according to nE (default 60 min, see parameter nE)
Fault in the communication cable between the main electronic board and the display panel
" button pressed for 5 seconds to access the Faults history Interface, which initially shows "HI".
A73023750 - Rev. 01 - 02-2023
Possible cause
" button pressed for 5 seconds to exit the
73
EN