Gree DC Inverter Multi VRF

DC INVERTER MULTI VRF MAINTENANCE
2.8 No energization to the unit and mainboard
机组及主板不得电
机组内接线板L、N是否
为220V
检查机组内空气开关
是否打开
滤波板输入是否有电
滤波板输出是否有电
更换主板
检查接线板电源是否故障
将空气开关打为ON
空气开关损坏或松脱
更换滤波板
是
是
是
是
否
否
否
否
是
3.2 Introduction of Major Electrical Elements
Name Photo Function Introduction
Filter board
Main functions: 1) Filter the
power interference and ensure
the anti-interference ability of
the unit under poor quality of
power supply; 2) Inhibit the
interference of the unit to the
power supply and prevent the
operation of unit from affecting
other electric appliances like TV.
Air switch
For connecting and
disconnecting the circuit of main
loop, provided with overcurrent
and short-circuit protection.
No energization to the unit
and mainboard
If the voltage of L & N on
terminal board inside the uni
t
is 220V
Check the power supply o
f
terminal board for any fault
Check if the air switch in
the unit is ON
Put the air switch to ON
position
If the input of filter board
is energized
The air switch is damaged or
loosened
If the output of filter
board is energized
Replace the filter board
Replace the mainboard
No
Yes
No
No
Yes
Yes
Yes
Yes
No