Strebel S-ASX 100, Installation Operating & Maintenance Manual, Page: 66 / 72

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Fault Code Fault / Alarm Description Reset
Input Heat Pump Lock
355 Power Supply Voltage Asymmetric A / M
E21 / E22 / E23 Yes
356
Plant Side Flow Switch A / M
E24 Yes
358 Soft Starter Compressor 1 A / M
E25 Yes
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
365 Instantaneous Heater Q34 Missing A
- No
366 Room Temperature Sensor Hx A
- No
367
Room Humidity Sensor Hx A
- No
368
Flow Temperature Setpoint Readjustment Hx A
- No
369 External Alarm A
- Yes
370
Thermodynamic Source 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 Voltage too Low 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
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
H82 Yes
482 Evaporation Temperature EVI A
B87 Yes
483
Soft Starter Compressor 2 A / M
- Yes
488 Condensation Pressure A
H83 Yes
The controller diagnostic considers, 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.
i) A = Automatic Reset.
ii) M = Manual Reset.
iii) A / M = Manual reset only if the number of events in an hour is higher than 3.