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39
AST 14 C 255/00
SUPER-TECHNICAL parameter
list
(code 1398)
Parameter Range
Default
values
Notes
P0
Display of boiler type
XYZ
X = P0 technical
parameters
Y = P2 technical
parameters
Z = P18 technical
parameters
Boiler faults
P1
Boiler last shut-down displaying
Fault
code
P2
Boiler second last shut-down
displaying
Fault
code
P3
Boiler third last shut-down displaying
Fault
code
P4
Boiler fourth last shut-down displaying
Fault
code
P5
Boiler fifth last shut-down displaying
Fault
code
P6
Shut-down display reset
0 ÷ 1
0
1 = shut-down reset
P7
Display of total alarm counting
P8
Display of board usage in months
Counting based on the board micro-switch reset.
30 reset operations correspond to one month.
Automatic filling
(with P94=1)
P10
Filling pressure ON and low water
alarm E04
0.4 ÷ 1 Bar
0.4 Bar
P11
Filling pressure OFF
1 ÷ 2 Bar
1 Bar
P12
Filling time
10 ÷ 150 sec
60 sec
When this time has
elapsed, the boiler triggers
E08 alarm
P13
Indicates that the pressure is too high
(error E09)
2 ÷ 4 Bar
2.8 Bar
P14
Alarm E09 reset
1.8 ÷ 3.8 Bar
2.6 Bar
P15
Alarm E04 disappeared
0.6 ÷ 2 Bar
0.8 Bar
P16
Max. number of filling attempts in 24h
1 ÷ 10
3
After successful attempts
COMFORT Function
P20
Plate exchanger maintenance
differential
0 ÷ 25 °C
14°C
With respect to set DHW
set-point
P21
Minimum time between maintenance
cycles
0 to 30 min
10 min
P22
Pump circulation time prior to burner
ignition
0 ÷ 180 sec
30 sec
Pre-circulation performed
at the start of each
maintenance cycle
P23
Flow differential for burner OFF
0 ÷ 25 °C
6°C
With respect to set flow
set-point
