Biasi M300V.2025 SM User Manual And Installation Instructions page 11

LCD FUNCTION
A
External NTC probe
E08 +
failure.
Lockout due to tripping
A
E10 +
of the flue gas probe
and thermal fuse.
b
E11 +
Parasite flame.
A
Return NTC probe fail-
E12 +
ure.
A
E13 +
Delta T M-R > 40K.
Pump fault or primary
b
E14 +
temperature
105°C.
Temperature
A
E14 +
ent circulation failure
(>2K/s).
b
No ∆T heating at start-
E18 +
up.
A
Auxiliary Input Probe
E19 +
Anomaly.
b
EVG lockout (valve pi-
E20 +
loting hardware failure).
b
EVG
E21 +
control Relay Failure).
EVG lockout (flame af-
b
E22 +
ter closing valve Ref.
EVG).
A
Gas valve modulator
E23 +
disconnected.
APPLIANCE DESCRIPTION
above
gradi-
lockout (valve
LCD FUNCTION
Anomaly due to prob-
A
E24 +
able chimney obstruc-
tion
Flame loss for more
b
E25 +
than
times.
Maximum
A
E26 +
fault between the 2
heating NTC probes.
A
Incorrect
E40 +
quency detected
A
E42 +
Buttons fault.
Fault of cumulative gas
b
E44 +
valve timeout without
flame.
A
OT
E50 +
fault.
A
E62 +
Calibration request.
System fails to control
A
combustion and exits
E65 +
modulator control pa-
rameters
A
Probably low gas pres-
E68 +
sure
A
System out modulator
E77 +
control parameters
A
Possible low gas pres-
E78 +
sure
6 consecutive
deviation
mains fre-
communication
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