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LCD
FUNCTION
Faulty
Er 06
+
probe NTC
Faulty external temp.
Er 08
+
probe NTC
Faulty flue temp. probe
Er 09
+
NTC
Flue probe intervention
Er 10
+
lockout
Flame detection error
(An flashing + number
error flashing
Faulty central heating
Er 12
temp. probe NTC (re-
+
turn).
Differential
Er 13
ture Flow and return
+
>40K
Faulty pump or primary
Er 14
temperature
+
105°C
None or too low wa-
ter flow; Faulty pump
Er 15
(temp. difference be-
+
tween probes higher
than 35° C)
Possible
of NTC probes (Flow
Er 16
or Return) or pump
+
wrongly mounted (up-
side – down)
Faulty
Er 17
probe NTC (Flow or
+
Return)
Faulty primary circuit
Er 18
(no water or absence
+
of flow)
Er 25
Flame detection error
+
Er 69
Wiring error lockout
- 10 -
APPLIANCE DESCRIPTION
C.H.
temp.
tempera-
above
exchange
C.H.
temp.
LCD
FUNCTION
Boiler Stand-By, hy-
phens are turned on in
sequence to simulate
running /antifreeze pro-
tection activated)
Boiler waiting for heat
request
Boiler in winter mode
(C.H.)
The primary circuit tem-
perature is displayed.
Boiler on demand for
C.H. power.
Burner ignition
(spark)
Flame present
(Burner on)
Boiler
phase (bP flashing +
temperature flashing).
Boiler protection only.
Boiler in antifrost phase
(AF flashing + temper-
ature flashing).
System protection via
additional
thermostat.
Set C.H.
(all other symbols are
disabled)
Remote control con-
nected (one flash every
4 sec.)
in
anti-freeze
external
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