Green Heating Technology
45
Signal
Probable causes
Suggested solutions
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.
E50
Electric supply out of
tolerance for 3 times
in last 5 minutes.
Verify, with qualified person, that Electric Supply and its tolerances
are respecting "Technical data" on page 47.
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