Italtherm 18 K, Инструкция

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Green Heating Technology
49
Signal Probable causes Suggested solutions
E39
Suspected freezing
After a power fail -
ure, the boiler de-
tected tempera-
tures at the Heating
and DHW probes
equal to, or less
than, 0°C when
power was restored
The display shows the alarm code 39 while the boiler inhibits the
ignition of the burner and activates the circulator, forcing water to
circulate in the hydraulic circuits.
If, during this time, the temperatures measured by the probes rise
above +1°C, the alarm is reset and the boiler returns to the normal
operation.
Otherwise, the alarm will persist and you should suspect that water
has frozen at one or more points of the hydraulic circuit of the boiler
and/or system (with possible damage to the frozen parts). If the
alarm persists, call a qualified technician.
Find/replace the parts damaged by the freezing.
E42
System error
Anomaly of inner
boiler device(s)
Mains electrical
power supply out
of tolerance limits
Detect the fault or anomaly also referring to the technical literature
reserved to the service centres.
E43
Over-temperature
of water on system
return
The water that returns to the boiler from the heating system is too
hot: this may be an effect of a malfunction of the system, and any -
way this can cause a too high temperature of the flue and damage
the flue system. Before this happens, a suitable safety protection
has triggered.
Wait 20-30 minutes to let the boiler and the system cool down, then
reset it manually by using the button. It is impossible to re -
start the boiler before the cooling of the system. If the block hap-
pens again, please call a qualified technician.
E46
Cabling configura -
tion error.
User: Try a boiler reset by using the button. If the lockout
persists or reappears, call the Service Centre.
Refer to the electric diagram (page 56) and check the integrity of the
wirings, especially the eventual short cable jumpers between two
contacts of the same connector (on the cabling connections to the
electronic board).