Mcu Option Switch - Samsung RD080HRXGB Installation Manual

completing the installation and
commissioning
SETTING THE OPTION SWITCHES & FUNCTION KEYS

MCU option switch

Rotary switch for indoor unit address
How to set up
 Set the rotary switch located at outdoor
unit PCB to match the number of
connected indoor units (8).
 Set the rotary switch located at outdoor
unit PCB to match the number of
connected MCU (2).
 When installing more than 2 MCUs, set
each rotary switch of MCU differently.
 Set rotary switch located at MCU PCB to
match indoor unit address.
 Set the DIP switch of MCU to "OFF"
position for the indoor units that is not
connected.
Key operation
Display MCU Display indoor
status unit's address
K1
Display Contents
(Pushed time)
1 MCU address
2 MCU EEV step
3 Subcooler-in EEV step
4 Subcooler-in sensor temperature
5 Subcooler-out sensor temperature
56_ completing the installation and commissioning
Indoor unit's activating switch (ON : Use, OFF : Not use)
Setting the
number of
indoor unit
MCU PCB
 
MCU address
 Indoor unit address
Indoor unit
Display segment
1 2 3
Blank 0
Blank 0
1 Blank 0
Blank 1
Blank 1
2 1 4
3 4 8
- 0
4
Blank 1
- 0
5
Blank 1
Rotary switch for MCU address
 
Outdoor
unit PCB
Setting the
number of
MCU
MCU PCB

MCU address

Indoor unit
Remarks
4
0 MCU address 0
1 MCU address 1
2 MCU address 2
1 MCU address 11
5 MCU address 15
0 Ex) 1400 steps  140 (Actual steps/10)
0 Ex) 480 steps
1 Ex) -1°C
0 Ex) 10°C
1 Ex) -1°C
0 Ex) 10°C

Indoor unit address