44
3P477778-7G
English
REYQ72-120XATJU type
2
+
-
3
-
+
1
1 Terminal block for power supply
2 Tester
3 White connector
REYQ144,168XATJU type
C+
C-
Opening hole
2
+
-
3
1
There are measurement points
at the back of the opening hole.
1 Terminal block for power supply
2 Tester
3 Opening hole
REYQ72-120XAYDU type
1
2
+
-
3
- +
1 Terminal block for power supply
2 Tester
3 White connector
REYQ144,168XAYDU type
1
2
+
-
3
+
-
1 Terminal block for power supply
2 Tester
3 White connector
REYQ72-168XAYCU type
2
1
+
-
3
- +
1 Terminal block for power supply
2 Tester
3 White connector
3
To prevent damaging the printed circuit board, touch a noncoated
metal part to eliminate static electricity before pulling out or plug-
ging in connectors.
4
Pull out junction connectors X1A, X2A (X3A, X4A) for the fan
motors in the outdoor unit before starting service operation on the
inverter equipment. Be careful not to touch the live parts.
(If a fan rotates due to strong wind, it may store electricity in the
capacitor or in the main circuit and cause electric shock.)
5
After the service is finished, plug the junction connector back in.
Otherwise the malfunction code E7 will be displayed on the user
interface or on the outdoor unit segment display and normal opera-
tion will not be performed.
For details refer to the wiring diagram labelled on the back of the
control box cover.
Pay attention to the fan. It is dangerous to inspect the unit while the
fan is running. Make sure to turn off the main switch and to remove the
fuses from the control circuit located in the outdoor unit.
NOTE
Play it safe. For protection of the printed circuit board, touch the con-
trol box casing by hand in order to eliminate static electricity from your
body before performing service.
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