I-70
F-084392_EN • B
A
dditionAl
i
nformAtion
for
the
i
nstAller
Error Codes and Solutions
Error
code
Fault description
Explanation
Action(s)
10
Outside temperature sen-
sor error
Check connection and/or sensor. Re-
place as required.
Emergency operation
Contact AIC technical support.
20
Boiler temperature 1,
sensor error
Short circuit or Open circuit
boiler fl ow sensor.
Check connection and sensor. Re-
place as required.
26
Common fl ow tempera-
ture, sensor error
Short circuit or Open circuit
common fl ow temperature
sensor.
Check connection and sensor. Re-
place as required.
28
Flue gas temperature sen-
sor error
Short circuit or Open circuit fl ue
gas sensor.
Check connection and sensor. Replace
as required.
30
Flow temperature 1, sensor
error
Short circuit or Open circuit fl ow
sensor.
Check connection and sensor. Replace
as required.
32
Flow temperature 2, sensor
error
Short circuit or Open circuit
boiler fl ow sensor.
Check connection and sensor. Replace
as required.
38
Flow temperature, primary
controller, sensor error
Check connection and sensor. Replace
as required.
40
Return temperature 1,
sensor error
Short circuit or Open circuit
boiler return sensor.
Check connection and sensor. Replace
as required.
46
Cascade return tempera-
ture, sensor error
Check connection and sensor. Replace
as required.
47
Common return tempera-
ture, sensor error
Check connection and sensor. Replace
as required.
50
DHW temperature 1 sensor
error
Check connection and sensor. Replace
as required.
52
DHW temperature 2, sen-
sor error
Check connection and sensor. Replace
as required.
54
Flow temperature DHW,
sensor error
Short circuit or Open circuit
DHW fl ow sensor.
Check connection and sensor. Replace
as required.
57
DHW circulation, sensor
error
Check connection and sensor. Replace
as required.
60
Room temperature 1, sen-
sor error
Check connection and sensor. Replace
as required.
65
Room temperature 2, sen-
sor error
Check connection and sensor. Replace
as required.
68
Room temperature 3, sen-
sor error
Check connection and sensor. Replace
as required.
70
Storage tank temperature
1 (top), sensor error
Check connection and sensor. Replace
as required.
71
Storage tank temperature
2 (bottom), sensor error
Check connection and sensor. Replace
as required.
72
Storage tank temperature
3 (center), sensor error
Check connection and sensor. Replace
as required.
78
Water pressure, sensor
error
Check connection and sensor. Replace
as required.
