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[
IX
Troubleshooting ]
[8] Servicing the BC controller
(1) Service panel
(2) Control box
*Special care must be taken when replacing heavy parts.
Work procedure
Explanatory figure
1.Remove 2 lock nuts on the control box, loosen 2 lock nuts,
and remove the control box.
2.Remove 4 fixing screws on the service panel, and remove
the service panel.
3.Remove 9 machine screws on the ceiling panel, and re-
move the ceiling panel.
Work procedure
Explanatory figure
1.To check the inside of the control box, remove 2 lock nuts
on the control box cover.
(1) Check the terminal connection of the power wire or of the
transmission line.
(2) Check the transformer.
(3) Check the address switch.
2.When the control board is replaced, the followings must
be noted.
(1) Check that the board type is NU-G,NU-GA, or NU-GB.
(2) Check that the wire or the connector is not incorrectly
connected, not disconnected or not loose.
Note:
It is not required to remove 2 fixing screws on the con-
trol box when checking the inside.
Loose
Service panel
Control Box
Ceiling panel
CMB-1016NU-G, 1016NU-GA
Содержание PUHY-P168
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Страница 366: ... 357 IX Troubleshooting ...
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Страница 368: ... 359 X LED monitor display on the outdoor unit board 1 How to read the LED on the service monitor 361 ...
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