Operation Manual

Error messages / Maintenance
Error / Maintenance messages
In exceptional cases, the basic display
shows one of the following symbols.
List of display
Error codes
Error code
Error description
0
No error
10
Outside temperature sensor error
20
Boiler temperature 1 sensor error
32
Flow temperature 2 sensor error
40
Return temperature 1 sensor error
50
DHW temperature 1 sensor error
52
DHW temperature 2 sensor error
61
Room unit 1
62
Room unit 1 type
78
Water pressure sensor
81
LPB short-circuit/comm
82
LPB address collision
92
Device electronics error
105
Maintenance message
110
STB lockout
117
Water pressure too high
118
Water pressure too low
119
Shutd water press swi
121
Flow temperature 1 (HC1) supervision
122
Flow temperature 2 (HC2) supervision
128
Loss of flame during operation
132
GP or LP error
133
No flame during safety time
151
Internal error
152
Parameterization error
153
Unit manually locked
154
Plausibility criterion
160
Fan error
161
Max fan speed
180
Chimney sweep function
181
Controller stop function
182
Sitherm Pro drift test
184
Modem function
185
Floor curing function
on.
A U T O
Error messages
If this symbol appears, an error in
the plant occurred. Press the info
button and read further information.
A U T O
Error
30: Flow sensor 1
0 4 8 12 16 20 24
Maintenance/special operation
If this symbol appears, a
maintenance alarm is delivered or the
plant has changed to special mode.
Press the info button and read further
informati-
Maintenance
3: Maintenance interval
0 4 8 12 16 20 24
18
Maintenance
code
Maintenance description
1
Burner hours run exceeded
2
Burner starts exceeded
3
Maintenance interval exceeded
5
Water pressure too low
Maintenance code