iCommand Manual
CAP-836 
Fault 
no. 
Fault 
abbreviation 
Cause of the fault
81  FC 
Frequency converter fault
82  diF P 
Differential pressure fine 
precipitator too high
89  modul 
Fault of EA module (reports 
a failure or does not 
respond)
90  dP Mi 
Dew point temperature too 
low 
91  dP MA 
Dew point temperature too 
high 
2.8.2 
Warning/maintenance messages
Fig. 10
: Warning/maintenance message
iCommand 
32 
Cause of the fault
  Fault remedy 
Frequency converter fault
Check frequency converter
Differential pressure fine 
precipitator too high
Set differential pressure fine 
precipitator 
Fault of EA module (reports 
a failure or does not 
respond)
Check cabling/EA module
Dew point temperature too 
Set dew point 
Dew point temperature too 
Set dew point 
If a fault not listed in the fault table occurs, contact the 
manufacturer immediately. 
Warning/maintenance messages
: Warning/maintenance message
1 
Warning symbol
2 
Warning number
If an unexpected change to parameters occurs during operation, a 
warning message and the warning symbol 
appear on the display. 
However, in comparison to the fault message, the compressor does 
not switch off. 
iCommand 
- Basic 
Personnel 
person 
Check frequency converter
Qualified 
electrician 
Set differential pressure fine 
Manufacturer 
Check cabling/EA module
Qualified 
personnel 
Qualified 
personnel 
Qualified 
personnel 
If a fault not listed in the fault table occurs, contact the 
If an unexpected change to parameters occurs during operation, a 
appear on the display. 
However, in comparison to the fault message, the compressor does 










