Lockouts
Error
code
Description of error
331
Sensor BX2 no function
332
Sensor BX3 no function
333
Sensor BX4 no function
334
Sensor BX5 no function
335
Sensor BX21 no function (EM1, EM2 or EM3)
336
Sensor BX22 no function (EM1, EM2 or EM3)
337
Sensor BX1 no function
338
Sensor BX12 no function
339
Collector pump Q5 not available
340
Collector pump Q16 not available
341
Solar Collector sensor B6 not available
342
DHW sensor B31 not available
343
Solar integration not available
344
Solar controlling element buffer K8 not available
345
Solar controlling element swimming pool K18 not available
346
Solid fuel boiler pump Q10 not available
347
Solid fuel boiler comparison sensor not available
348
Solid fuel boiler address error
349
Buffer return valve Y15 not available
350
Puffer address sensor
351
Primary controller / system pump address error
352
Pressureless header address error
353
Common flow sensor B10 not available
371
Flow temperature 3 (heating circuit 3) supervision
372
Limit thermostat heating circuit 3
373
Extension module 3 error (collective error)
374
Sitherm Pro calculation
375
BV stepper motor
376
Drift test limit value
377
Drift test prevented
378
Repetition counter internal error elapsed
379
Repetition counter extraneous light elapsed
380
Repetition counter loss of flame during operation elapsed
381
Repetition counter no flame during TSA elapsed
382
Repetition counter fan error elapsed
383
No repetition permitted
384
Extraneous light
385
Mains undervoltage
386
Fan speed has lost valid range
387
LP error
388
DHW error no function
426
Feedback flue gas damper
427
Configuration flue gas damper
429
Dynamic water pressure to high
430
Dynamic water pressure to low
431
Sensor primary heat exchanger
432
Functional earth not connected
433
Temperature primary heat exchanger to high
29