6 Optional functions
Complementary systems
SMGB0099 rev.0 - 12/2016
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6
6.3  Complementary systems
6.3.1  KPI and DX-Interface
Optional functions
The following optional functions as shown in next table are available by setting of PC-ARFPE. Contact your distributor or 
dealer of HITACHI for the detailed information.
Where Code Function DX KPI-E4E KPI-X4E Setting Status Remarks
RCS 
setting
b3
Compressor 3 min off 
guard
O - O
00: Invalid 
01: Valid
b4 Filter sign O O O
00: Indoor setting 
01: 100h 
02: 1200h 
03: 2500h  
04: no indication
b5 Run mode x O - O
00: Normal 
01: Fix
b6 Setting temperature x O O O
00: Normal 
01: Fix
b7 Cooling only x O - O
00: Normal 
01: Fix
b8 Auto Cool/Heat O - O
00: Invalid 
01: Valid
b9
Air ow x (Fixed air 
fan speed)
O - O
00: Normal 
01: Fix
C1 Electrical heater signal - O O
00: Disabled 
01: Enabled
C3 Fan stoppage delay O O O
00: Disabled (Default) 
01: 60 minutes
C5
Static pressure 
selection
- O O
00: Standard 
01: High pressure 
02: Low pressure
C6
Fan speed up when 
heating thermo OFF
O - -
00: Invalid 
01: Valid
C7 CO2 sensor enabled - O O
00: Disabled (Default) 
01: Enabled
C8 Thermistor selection O - -
00: Inlet 
01: Remote controller 
02: inlet+Remote controller/2
Cb
Forced stop logic 
selection
O O O
00: A contact 
01: B contact
CC High ventilation speed O O O
00: Disabled 
01: Enabled
d1 Power ON/OFF 1 O O O
00: Invalid 
01: Valid
d3 Power ON/OFF 2 O O O
00: Invalid 
01: Valid
E1
Ventilation mode - O -
00:  Automatic ventilation 
01: Heat exchanger ventilation 
02: Bypass ventilation 
Bypass not available for 
KPI-Active
“A” offset for Thermo 
OFF in control by 
Outlet for DX-Kit
O - -
00: 0 
01: 2 
02: 4
E2
Air Volume  
increasing
- O O
00: Not activated 
01: Activated
This function is used 
to make higher the 
room pressure than the 
surrounded rooms. One 
of the fans increases its 
speed while the other runs 
according to the remote 
controller. 
Hi/Me/Lo --> Hi/Hi/Me
E3
E2 Fan mode  
selection
- O O
00: Activated for supply fan 
01: Activated for exhaust fan