Biasi RINNOVA ADAPTIVE M300V.2025 SM Service Manual page 29

LCD FUNCTION
A
Anomaly due to probable chimney obstruc-
E24 +
tion
b
Flame loss for more than 6 consecutive
E25 +
times.
A
Maximum deviation fault between the 2
E26 +
heating NTC probes.
A
E40 +
Incorrect mains frequency detected
A
E42 +
Buttons fault.
b
Fault of cumulative gas valve timeout with-
E44 +
out flame.
A
E50 +
OT communication fault.
A
E62 +
Calibration request.
A
System fails to control combustion and
E65 +
exits modulator control parameters
A
E68 +
Probably low gas pressure
A
E77 +
System out modulator control parameters
A
E78 +
Possible low gas pressure
A
E79 +
System out modulator control parameters
Internal error (usually hardware) or prob-
b
E89 +
lems with the mains electrical supply
(excessive distortion of waveform).
b
E91 +
Maximum number of lockouts reached.
E96
Incorrect network frequency.
E97
Power supply voltage low.
E99
Card not configured.
L1
Primary limitation in D.H.W. mode.
Boiler stand-by, the dashes light up in
sequence to simulate a scrolling motion
(antifreeze protection activated).
When powering ON the boiler, all icons
and digits light up (for 2 seconds) to check
operation of the LCD.
CONTROL PANEL ELECTRONIC P.C.B.
LCD FUNCTION
If the pressure is not correct the value is
displayed with the flashing symbol.
Next maintenance due date (factory setting
12 months). In the event of an error, this
has greater priority than maintenance due
date.
Maintenance overdue.
In the event of an error, this has greater
priority than maintenance due date.
Pump active for the post-circulation phase
(flashing PO + flashing temperature).
Boiler in antifreeze phase (flashing bP +
flashing temperature).
Boiler with D.H.W. power request.
The D.H.W. temperature is displayed.
Boiler with central heating request via room
thermostat.
Boiler with central heating power request
with connected remote.
Heating set temperature
(all other symbols are disabled).
D.H.W. set temperature
(all other symbols are disabled).
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