I-64
Z-038791_EN • Rev A
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 flow sensor.
Check connection and sensor. Re-
place as required.
26
Common flow tempera-
ture, sensor error
Short circuit or Open circuit
common flow temperature
sensor.
Check connection and sensor. Re-
place as required.
28
Flue gas temperature sen-
sor error
Short circuit or Open circuit flue
gas sensor.
Check connection and sensor. Replace
as required.
30
Flow temperature 1, sensor
error
Short circuit or Open circuit flow
sensor.
Check connection and sensor. Replace
as required.
32
Flow temperature 2, sensor
error
Short circuit or Open circuit boil-
er flow 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, sen-
sor error
Short circuit or Open circuit boil-
er 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
flow sensor.
Check connection and sensor. Replace
as required.
57
DHW circulation, sensor er-
ror
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 er-
ror
Check connection and sensor. Replace
as required.
