Gree CN851W1000, Service Manual

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168
DC Inverter Multi
VRF Service Manual
1�2 Trouble Display of Mainboard LED of Outdoor Unit
Description of indicator LED.
Definition:
LED6:
LED5:
LED4, LED3, LED2, LED1:
Error Description
Main control display of the outdoor units
Transfer
board
Display
Drive board of compressor Drive board of fan motor
LED1 LED2 LED3 LED4 LED5 LED6 Nixietube
LED1
(Red)
LED2
(Yellow)
LED3
(Green)
LED1 (red)
Continous fast
blinking counts
Red Yellow Green
Normal
○ ● ● ● ○ ○
ON
● ●
1
● ●
Capacity dial-up error
○ ● ● ○
- - - - -
Compressor high-
pressure protection
● ● ● ○
E1 - - - -
Compressor low-
pressure protection
● ● ● ○
E3 - - - -
Compressor air-
out protection
● ● ○
E4 - - - -
Overcurrent Protector
● ● ● ○
E5 - - - -
No-refrigerant protection
● ○ ○
E3 - - - -
Error with sub-module
and main control
communication (display
in sub-module)
● ● ○
- - - - -
Communicationerror
with frequency
conversion drive
● ● ● ○ ○
E5
●
-
The temperature of
radiating fin is too high
○ ○ ○ ○
E5
○ ○
-
Radiating fin sensor
abnormal
○ ○ ○ ○
E5
● ○
-
Clogged
○ ○ ● ○
E5 - - - -
Over-current protection
of frequency conversion
compressor
○ ○ ○
E5 -
DC input voltage
is too high
○ ○ ○ ○ ○
E5
●
-
DC input voltage
is too low
○ ○ ○
E5
●
-
IPM ABNORMAL
○ ○ ○ ○
E5
●
-
Motor out of
synchronization
● ● ○ ● ○
E5
○ ○
-
Overspeed
● ○ ○ ○
E5
○
-
Open phase, tripping
● ○ ● ○
E5
○ ● ○
-
Temperature drift
protection
○ ● ○ ○
E5
○
-
Error with the temperature
sensor on drive board
○ ● ○ ○
E5
● ○
-
Startup failure
○ ○ ○ ● ○
E5
○ ●
-
AC current protection
(input side)
● ○ ○ ○
E5 - - - -
PFC ABNORMAL
● ○ ○ ● ○
E5 - - - -
Drive module reset
○ ● ○ ● ○
E5 - - - -