6
1
2
3
ON
1
2
3
ON
1
2
3
ON
ELECTRICAL WIRING
3.3.3 Optional Function Settings of Dip Switch (DSW2,3)
Before setting DSW, firstly turn off power source and set the position of the DSW. If the switches are set
without turning off the power source, the contents of the setting are invalid. Mark of
“
■
”
indicates the
position of dip switch.
DSW2: Optional Function Settings (1)
Dip Switch
Setting
Force No.1 Compressor Stop
Force No.2 Compressor Stop
Force No.3 Compressor Stop
3.3.4 Alarm Detect Function
If the system is operated under abnormal conditions, during the test running or in normal operate, the
red lamp of the PCB flickers. The states of red lamp flickers are indicated in following Table.
State of
Red Lamp Flickers
Description
Check Item
Continue Light
Normal
—
Once
Reverse or Single Phase of
Main Power Source
1)Check the connection of main power supply.
(Refer to 3.1 Main Power Wiring Procedures)
Twice
Incorrect Wiring Connection
of Room Thermostat
1)Check wiring and connections between unit and
thermostat. (Refer to 3. 2 Control Wiring)
3 Times
Trip Detected of Safety Device
1)Check the current for indoor fan motor.
2)Check the current for outdoor fan motor.
3)Check the pressure of discharge and suction line.
(Refer to 16. Troubleshooting)
4)Check the internal thermostat of compressor.
4 Times
Overcurrent of Compressor
1)Check the current for compressor motor.
2)Check the pressure of discharge and suction line.
(Refer to 16. Troubleshooting)
3)Check the resistance of current transformer by
tester.(Refer to Wiring Nameplate)
5 Times
Detect of Power Off
1)Check the main power supply.
6 Times
Wrong Detect of CPU
1)The CPU of PCB self-checking.
(No need to check the item of unit)
7 Times
No Capacity Setting of Unit
1)Check the setting of DSW1 switch.
(Refer to 3.3.2 Factory Setting of Dip Switch)
Notes:
1) The Red Lamp Flickers cycle will continue showing at intervals of 3 seconds until the Indication
problem be solved.
2) If unit still under abnormal conditions, please contact your distributor.
