Lockouts
Error
code
Description of 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)
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)
386
Fan speed has lost valid range
388
DHW error no function
426
Feedback flue gas damper
427
Configuration flue gas damper
431
Sensor primary heat exchanger
432
Functional earth not connected
433
Temperature primary heat exchanger to high
34