- 12 -
USE
APPLIANCE DESCRIPTION
LCD
FUNCTION
E79 +
A
System out modulator
control parameters
E89 +
b
Internal error (usually
hardware) or problems
with the mains electri
-
cal supply (excessive
distortion of waveform).
E91 +
b
Maximum number of
lockouts reached.
E96
Incorrect network fre
-
quency.
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 se
-
quence to simulate a
scrolling motion (anti
-
freeze protection acti
-
vated).
When powering ON
the boiler, all icons and
digits light up (for 2 sec
-
onds) to check opera
-
tion of the LCD.
If the pressure is not
correct the value is dis
-
played with the flashing
symbol.
Next maintenance due
date (factory setting 12
months). In the event of
an error, this has great-
er priority than mainte
-
nance due date.
LCD
FUNCTION
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. pow
-
er request.
The D.H.W. tempera
-
ture is displayed.
Boiler with central heat
-
ing request via room
thermostat.
Boiler with central heat
-
ing power request with
connected remote.
