'19 • PAC-SM-309
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79
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LED
U
V
W
LED1
LED3
LED5
LED2
LED4
LED6
LED1
LED3
LED5
LED2
LED4
LED6
LED1
LED3
LED5
LED2
LED4
LED6
LED1
LED3
LED5
LED2
LED4
LED6
LED1
LED3
LED5
LED2
LED4
LED6
LED1
LED3
LED5
LED2
LED4
LED6
(6) Inverter checker for diagnosis of inverter output
●Checking method
(a) Setup procedure of checker.
1) Power OFF (Turn off the breaker).
2) Remove the terminal cover of compressor and disconnect the wires (U, V, W) from compressor.
3) Connect the wires U (Red) , V (White) and W (Black) of checker to the terminal of disconnected wires (U, V, W)
from compressor respectively.
(b) Operation for judgment.
1) Power ON after SW6-4 on outdoor inverter PCB was turned ON.
2) After 15 seconds since power has turned ON, LED start
ON/OFF for 5 seconds cyclically and it repeats 10 times.
3) Check ON/OFF status of 6 LED's on the checker.
4) Judge the PCB by ON/OFF status of 6 LED's on the checker.
5) Be sure to turn off SW6-4 on outdoor inverter PCB, after finishing the check operation.
～
ON/OFF
status of LED
If all of LED are ON/OFF
according to following pattern
If all of LED stay OFF or
some of LED are ON/OFF
Inverter PCB Normal Anomalous
15 sec.
5sec.5sec.
5sec.
During this period, ON/OFF status of LED is
repeated cyclically according to following pattern
Power ON or start check operation
1 2 3 10
Cyclically
● ON
○ OFF
Red
Black
White
Faston terminal
〈Inverter Checker〉
Connect to the terminal of the wires which are disconnected from compressor.
LED ON/OFF pattern
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