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8
ERROR / FAULT CODES
Error
Error Description
Code
Outside temperature sensor error
10
Boiler temperature 1 sensor error
20
Common flow temperature sensor error
26
Flue gas temperature sensor error
28
Flow temperature 1 sensor error
30
Flow temperature primary controller sensor error
38
Return temperature 1 sensor error
40
Return temperature cascade sensor error
46
Common return temperature sensor error
47
DHW temperature 1 sensor error
50
DHW temperature 2 sensor error
52
DHW primary controller sensor error
54
DHW circulation temperature sensor error
57
Room temperature 1 sensor error
60
Room temperature 2 sensor error
65
Buffer storage tank temperature 1 sensor error
70
Buffer storage tank temperature 2 sensor error
71
Buffer storage tank temperature 3 sensor error
72
Collector temperature 1 sensor error
73
Water pressure sensor error
78
LPB address collision
82
BSB wire short-circuit
83
BSB address collision
84
BSB RF communication error
85
EEPROM error lockout information
91
Extension module 1 error (collective error)
98
Extension module 2 error (collective error)
99
2 clocktime masters (LPB)
100
Clocktime master without reserve (LPB)
102
Communication error
103
Maintenance message
105
Boiler temperature supervision
109
STB lockout
110
TW cutout
111
Water pressure too high
117
Water pressure too low
118
Water pressure switch has cut out
119
Flow temperature 1 (HC1) supervision
121
Flow temperature 2 (HC2) supervision
122
Pump supervision error
125
DHW charging supervision
126
Legionella temperature not reached
127
Loss of flame during operation
128
Fan error or LP error
129
9
CASCADE
ALUBOX X-treme boilers are equipped with a fault diagnosis
system. When a malfunction code is displayed on both the Master
and Slave boilers, the red light on the bottom of the control panel
flashes with the no flame sign.
Malfunction codes are given below.
Error
Error Description
Code
Flue gas temperature limit exceeded
130
GP or LP error
132
No flame during safety time
133
Configuration error collective message
146
Internal error
151
Parameterization error
152
Unit manually locked
153
Fan error
160
LP error, does not close
162
Error heating circuit flow switch
164
LP error, does not open
166
Sitherm Pro system error
169
Error water pressure sensor, primary side
170
Alarm contact H1 or H4 active
171
Alarm contact H2 (EM1, EM2 or EM3) or H5 active
172
Alarm contact H6 active
173
Alarm contact H3 or H7 active
174
Water pressure 2 too high
176
Water pressure 2 too low
177
Limit thermostat heating circuit 1
178
Limit thermostat heating circuit 2
179
Unit in parameterization mode
183
Maximum duration of the refill per charging
195
Maximum duration of the refill per week exceeded
196
Fault heating circuit
209
Monitoring of motor
214
Fault fan air diverting valve
215
Fault boiler
216
Fault sensor
217
Pressure supervision
218
Flow sensor solar sensor error
241
Return sensor solar sensor error
242
Swimming pool temperature sensor error
243
217 Flow temperature 3, sensor error
260
Limit function
270
Mains frequency outside permissible range
317
DHW charging temperature sensor error
320
217 DHW outlet temperature, sensor error
321
218 Water pressure 3 too high
322
218 Water pressure 3 too low
323
BX same sensors
324
BX / extension module same sensors
325
BX / mixing group same sensors
326
Extension module same function
327
Alubox X-treme boilers can be used as a single boiler or as
cascade for up to 16 boilers.
Particularly during the season passes, the heat requirement of the
system may be very low. Cascade systems run only 1 boiler to meet
this low heat requirement and provide efficient operation. In the
same way, cascade systems, can activate all of the boilers when
heat demand increased, saves energy by operating in a wide range
of modulation.
Boilers in the cascade system share the heat load evenly. Master
Boiler's EQUAL AGING function ensures that each boiler works
evenly, ensuring high efficiency and long life time.
In cascade systems, one of the boilers is used as MASTER
(LEADER), others are used as SLAVES (FOLLOWERS). While all
settings of the cascade system are done via the MASTER boiler,
SLAVE boilers work under the control of the MASTER boiler.
38
Error
Error Description
Code
146 Mixing group, same function
328
146 Extension module/mixing group, same
329
Sensor BX1 no function
330
Sensor BX2 no function
331
Sensor BX3 no function
332
Sensor BX4 no function
333
Sensor BX21 no function (EM1, EM2 or EM3)
335
Sensor BX22 no function (EM1, EM2 or EM3)
336
Collector pump Q5 not available
339
Collector pump Q16 not available
340
Solar Collector sensor B6 not available
341
DHW sensor B31 not available
342
Solar integration not available
343
Solar controlling element buffer K8 not available
344
Solar ctrl element swimming pool K18 not
345
Solid fuel boiler pump Q10 not available
346
Solid fuel boiler comparison sensor not available
347
Solid fuel boiler address error
348
Buffer return valve Y15 not available
349
Puffer address sensor
350
Primary controller / system pump address error
351
Pressureless header address error
352
Common flow sensor B10 not available
353
Flow temperature 3 (heating circuit 3) supervision
371
Limit thermostat heating circuit 3
372
Extension module 3 error (collective error)
373
169 Sitherm Pro calculation
374
169 BV stepper motor
375
169 Drift test limit value
376
169 Drift test prevented
377
151 Internal repetition
378
129 Repetition speed
382
151 Extraneous light
384
151 Mains under-voltage
385
Fan speed has lost valid range
386
129 Air pressure tolerance
387
DHW error no function
388
Feedback flue gas damper
426
Configuration flue gas damper
427
218 Dynamic water pressure too high
429
218 Dynamic water pressure too low
430
Sensor primary heat exchanger
431
Functional earth not connected
432
Temperature primary heat exchanger to high
433
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