Gree GMV-VQ680WM/C-X Service Manual page 331

Gree
Display status of
LED1
Master module
status
(2) Powering off and replacing the main board
① Disconnect all the plugs in the areas marked by 1 from the main board.
② Use a screwdriver to remove the screws marked by 2 on the main board.
③ Pull the side buckle 3 carefully to take out the main board from the unit.
Installation procedure
(1) Complete the installation procedure in the reverse sequence of removal.
(2) Refer to the unit circuit diagram for the plugging
(3) DIP setting
Complete the setting of the new main board based on that of the faulty one while the ODU is
power-off. The setting becomes active after the unit is powered on again. Setting made when the
ODU is active is ineffective.
GMV6 HR DC Inverter VRF Units Service Manual
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Display status of Display status of
LED1
Slave module Slave module
status
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Display status of
LED1 LED1
Slave module
status status