42
The controller diagnostic takes into account, besides the alarms reported in the table, many other alarm codes the meaning of which
is indicated on the unit display when the corresponding alarm becomes active. Such alarms are not critical and don’t lock the heat
pump operation.
Note:
(1) A = automatic reset , M = manual reset , A / M = manual reset only if the number of events in an hour is higher than 3.
(2) Only for brine-water units
(3) Only for water-water units
344
Solar integration valve on plant buffer tank K8 missing
A
-
No
345
Solar integration valve on swimming pool K18 missing
A
-
No
346
Boiler pump Q10 missing
A
-
No
350
Configuration error plant buffer tank
A
-
No
351
Configuration error primary controller / system pump
A
-
No
352
Configuration error pressureless header
A
-
No
353
Sensor B10 missing
A
-
No
354
Special sensor 2
A
BX
No
355
Poer suipply voltage asymmetric
A / M
E21/E22/E23
Yes
356
Plant side flow switch
A / M
E24
Yes
357
Flow sensor cooling circuit 1
A
-
No
358
Soft starter compressor 1
A / M
E25
Yes
359
Passive cooling diverting valve Y21 missing
A
-
No
360
Reversing cycle valve Y22 missing
A
-
No
361
Sensor B91 missing
A
-
No
362
Sensor B92 missing
A
-
No
363
Sensor B84 missing
A
-
No
364
Heat pump cooling system alarm
A
-
Yes
365
Instantaneous heater Q34 missing
A
-
No
366
Room temperature sensor Hx
A
-
No
367
Room humidity sensor Hx
A
-
No
368
Flow temperature set point readjustment Hx
A
-
No
370
Thermodynamic source
A
-
Yes
369
External alarm
A
-
Yes
371
Flow temperature too low heating circuit 3
A
-
No
372
Limit thermostat heating circuit 3
A
-
No
373
Expansion module 3
A
-
No
385
Mains undervoltage
A / M
E21
No
388
DHW sensor no function
A
-
No
441
BX31 no function
A
-
No
442
BX32 no function
A
-
No
443
BX33 no function
A
-
No
444
BX34 no function
A
-
No
445
BX35 no function
A
-
No
446
BX36 no function
A
-
No
447
BX6 no function
A
-
No
452
HX1 no function
A
-
No
453
HX3 no function
A
-
No
454
HX31 no function
A
-
No
455
HX32 no function
A
-
No
456
HX33 no function
A
-
No
457
BX7 no function
A
-
No
462
BX8 no function
A
-
No
463
BX9 no function
A
-
No
464
BX10 no function
A
-
No
465
BX11 no function
A
-
No
466
BX12 no function
A
-
No
467
BX13 no function
A
-
No
468
BX14 no function
A
-
No
469
HX21 no function
A
-
No
470
HX22 no function
A
-
No
472
Flow sensor cooling circuit 2
A
B17
No
473
Flow sensor cooling circuit 3
A
B18
No
476
Suction temperature
A
B85
Yes
477
Evaporation pressure
A
H82
Yes
479
No refrigerant selected
A
-
Yes
480
Suction temperature EVI
A
B86
Yes
481
Evaporation pressure EVI
A
H86
Yes
482
Evaporation temperature EVI
A
B87
Yes
483
Soft starter compressor 2
A / M
-
Yes
488
Condensation pressure
A
H83
Yes
Code
Alarm
Reset
(1)
Input
Heat pump lock
CONTROL SYSTEM
