Part Name
Contents of Functions
LEDs
LED1 (Red)
Power Source Indication for PCB1 (Low Voltage)
Normal Condition:
Activated
Abnormal Condition: Deactivated
LED2 (Green)
This LED2 indicates the transmission state between the PCB1 and PCB2.
Normal Condition:
Flashing
Abnormal Condition: Activated or Deactivated
LED3 (Yellow)
This LED3 indicates the transmission state between the indoor unit and
outdoor unit.
Normal Condition:
Flashing
Abnormal Condition: Activated or Deactivated
LED4 (Orange)
This LED4 indicates the transmission state between the outdoor units.
Normal Condition:
Flashing
Abnormal Condition: Activated or Deactivated
LED5 (Red)
Power Source Indication for PCB1 (High Voltage)
Normal Condition:
Activated
Abnormal Condition: Deactivated
SEGs
SEG1, SEG2
These indicate the following “Alarm”, “Protective Safety Device has
Tripped” or “Checking Items”.
b. Inverter Printed Circuit Board: PCB2 (and Transistor Module)
Part Name
Contents of Functions
LED201 (Red)
Power Source Indication for PCB2
Normal Condition:
Activated
Abnormal Condition: Deactivated
LED202 (Yellow)
This indicates the state of microcomputer.
Normal Condition:
Activated
Abnormal Condition: Deactivated
1 2
1
ON
OFF
• DSW1
No setting is required.
When set No.1 pin to ON, the electric current detection is canceled.
No.1 pin should be set back to OFF after electrical work.
DSW1
PCB2 for Inverter
CN206
LED202 (Yellow)
CN2
CN207
U
V
W
LED201 (Red)
C
N
P
Screw (M5)
Screw (M5)
Transistor Module
Fixing Screws for
Transistor Module (M4)
Fixing Screws for
Transistor Module (M4)
PCN301
Fixing Screws for
Transistor Module (M4)
132
