GMV DC Inverter VRF
53
Instruction for each stage progress at the time of debugging
—
Progress code Status code
Meaning
Progress
Code
Code
Code
06_outdoor
unit
components
inspection
db ON 06 ON
ing error
ON
The system has detected the fault of outdoor
unit’ components.
db ON 06 ON OC ON
The system detected that there’s no outdoor
unit fault. Enter into the next step
07_indoor
unit
components
inspection
db
ON
07
ON
XXXX/cor
error
code
ON
The system detected an indoor unit fault.
XXXX indicates engineering number of fault
indoor unit, and the corresponding fault code
is displayed 2s later. For example, if there is
D5 fault in the No. 100 indoor unit, LED3
displays as follows: 01 (after 2s) 00 (after 2s)
d5, and they will be displayed circularly.
db ON 07 ON OC ON
The system detected that there’s no outdoor
unit fault. Enter into the next step
08_compress
or preheat
confirmation
db ON 08 ON U0 ON Preheat time for compressor is insufficient.
db ON 08 ON OC ON
Preheat time for compressor is enough. Enter
into the next step automatically.
judge before
start up
db ON 09 ON U4 ON
The system refrigerant is insufficient. Please
charge the refrigerant until the fault is
db ON 09 ON OC ON
The system refrigerant judge is normal. Enter
into the next step automatically.
judgment of
before
db ON 10 ON ON ON Starting up the operation.
db ON 10 ON U6 ON Main pipeline status is abnormal.
db ON 10 ON OC ON Main pipeline status is normal.
db ON 11 ON AE ON —
db ON 12 ON 01 ON —
13~15_pilot
run stage
db ON
ON AC ON Test run under heating mode.
db ON
ON AH ON Test run under cooling mode.
db ON
13/14/1
5
ON
nding
error
ON
There is fault in the pilot run stage.
Note: fault module display.
db ON
ON J0 ON
There is fault in the pilot run stage.
Note: non-fault module display.
db ON
13/14/1
5
ON XXXX/U8
ON
The system detected the indoor unit’s pipeline
is abnormal. XXXX indicates the engineering
number of fault indoor unit. Error code U8 is
displayed after 2s. For example, if the U8 fault
occurs in the No. 100 indoor unit, LED3
displays as follows: 01 (after 2s) 00 (after 2s)
U8, and they will be displayed circularly.
Note:
In the pilot run stage, the unit will display corresponding procedures according to actual
circumstances.
When master module displays as below, the complete unit has conducted the debugging and it
stays at the standby status.