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Function Code Setting
Function Code
Range Default
Setting Address
Hydro
Unit
Remote
Controller
(12) Hydro 2 Way Valve
Operation Control
Cooling 2 Way Valve - Operation Logic
0=Activated during cooling; 1=Not activated
during cooling
3C - 0~1 0
(13) Hydro 3 Way
Diverting Valve
Operation Control
3 Way Diverting Valve Operation Logic
0=Activated during hot water operation; 1=not
activated during hot water operation
54 - 0~1 0
(14) 2 Zone Mixing Valve
Drive Time
Specified Drive Time for Mixing Valve (x10sec) 0C - 3~24 6
Mixing valve OFF (control time - mins) 59 - 1~30 4
(15) Boiler/Heat Pump
Synchronisation
External Boiler/Heat Pump Synchronisation
0=Synchronised – external boiler stops as
temperature reaches hydro unit’s temperature
setting
1=Not synchronised
3E - 0~1 0
Boiler/Heat Pump/Electric Heater Operation
During Low Ambient Conditions (controlled
using FC23)
0 = HP & boiler operation
1 = Boiler operation only
2 = Electric heater operation only
5B - 0~2 0
(16) Maximum Operation
Time Of Hot Water Heat
Pump
Maximum Heat Pump Operation Time In Hot
Water Operation Priority Mode (minutes)
07 - 1~120 30
(17) Cooling Operation
0=Cooling & Heating Operation; 1=Heating
Only Operation
02 - 0~1 1
(18) Remote Controller
Indication
24h or 12h Time Indication 0= 24h; 1=12h - 05 0~1 0
(19) CDU Night Time Low
Noise Operation
Low Noise Operation 0=Invalid; 1=Valid - 09 0~1 0
Start Time (Hour) - 0A 0~23 22
End Time (Hour) - 0B 0~23 06
(20) Alarm Tone
Tone Switching 0=OFF; 1=ON - 11 0~1 1
Pump Control /
Synchronisation
Pump P2 Control in Cooling Mode:
0 = P2 continuous operation
1 = P2 stops in cooling mode
64 - 0~1 0
Synchronise Pump P1 with Room Temperature
Control and External Room Thermostat
Control:
0 = P1 continuous operation
1 = P1 synchronised with room temperature /
thermostat control. P1 will stop when HP in
thermo OFF mode
65 - 0~1 0
Pump P1 Operation: outside Air Temperature
Control in Heating Mode (°C):
P1 stops when TO > set value in FC9E with
DPSW10_2 ON (heating mode only)
9E - 10~30 20
Pump P2 Remote
Controller Display
0=Not Shown; 1=Shown 42 - 0~1 0
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