34
Type
No.
Description
Range
U/M
Step
Default
CONFIGURATION
PAR
23
External relay 1 function
0 = not used; 1 = remote alarm NO; 2 = remote alarm NC; 3 = zone
valve; 4 = automatic filling; 5 = external request; 6 = recirculation
pump; 7 = zone valve with OT; 8 = relaunch pump
0 .. 8
-
-
0
PAR
24
External relay 2 function
0 = not used; 1 = remote alarm NO; 2 = remote alarm NC; 3 = zone
valve; 4 = automatic filling; 5 = external request; 6 = recirculation
pump; 7 = zone valve with OT; 8 = relaunch pump
0 .. 8
-
-
0
PAR
25
Auxiliary TA function
0 = according to TA
1 = TA Antifreeze
2 = domestic hot water disabled
0 .. 2
-
1
0
PAR
26
Zone Valve / Pump Relaunch Delay
0 .. 99
Min
1
1
PAR
28
DHW activation delay with solar power
0 .. 30
Min
1
0
PAR
29
Anti-legionella Function (Only hot water tank)
-- = Disabled
50 .. 80
-
1
--
PAR
30
Maximum domestic hot water temperature
35 .. 67
°C
1
60
PAR
35
Digital / analogue Pressure switch
0 = water pressure switch
1 = water pressure transducer (with ALL 09)
2 = water pressure transducer (without ALL 09)
0 .. 2
-
1
1
PAR
40
Modulating Pump Speed
-- = No modulation
AU = Automatic 30
.. 100
%
10
AU
PAR
41
∆T Modulating pump delivery/Return
10 .. 40
%
1
20
PAR
47
System pump forcing (only in winter mode)
0 = Disabled
1 = Enabled
0 .. 1
-
1
0
RESET
PAR
48
INST Parameter set to default
0 .. 1
-
-
0
In the event of a fault/malfunction the message “ALL” will
appear on the display with the alarm number eg. “ALL 04”
(Domestic Hot Water Sensor Fault).
Before repairing the fault:
– disconnect the appliance from the mains power by setting
the main switch to "OFF"
– as a precautionary measure, close the gas isolation valve.
Resolve the problem and start-up the boiler again.
NB:
after having repaired the fault, when the alarm number
appears on the display together with the message
d
(see figure), press the button
y
for approximately 3 seconds
to start the appliance up again.
7.5
Fault / malfunction codes
Type
No.
Description
ALL
02
Low water pressure in system
ALL
03
High water pressure in system
ALL
04
Domestic hot water sensor (SS) fault
ALL
05
Delivery sensor (SM) fault
ALL
06
No flame detection
ALL
07
Safety thermostat intervention
ALL
08
Fault in the flame detection circuit
ALL
09
No water circulating in the system
ALL
10
Auxiliary sensor fault
ALL
11
Gas valve modulator disconnected
ALL
12
Incorrect configuration of the open / sealed
chamber
ALL
13
Exhaust sensor (SF) intervention
ALL
14
Exhaust sensor (SF) fault
ALL
15
Fan check cable disconnected
ALL
18
Condensate level fault
ALL
28
Maximum number of consecutive resets (6)
ALL
37
Fault due to low supply voltage
ALL
40
Incorrect supply frequency detected
ALL
41
Flame loss more than 6 consecutive times
ALL
42
Button fault
ALL
43
Open Therm communication fault
ALL
62
Self-calibrating procedure is required
ALL
72
Incorrect positioning of the delivery sensor
ALL
81
Lockout due combustion during start-up
ALL
83
Irregular combustion (temporary error)
ALL
96
Lockout due to flue (exhaust) blockage
