Gree MULTI VRF SYSTEM II GMV-120WL/A-T User Manual

53
DC Inverter Multi VRF System II
Service Manual
07_Parts
detection for
indoor unit
db ON 07 ON
XXXX/corresponding
error code ON
The system detected that there’s
malfunction for the parts of indoor
unit. XXXX indicates the engineering
series code for the indoor unit with
malfunction. 3s later, corresponding
malfunction code will be displayed. Eg:
When there is malfunction d5 and d6
for no. 1 indoor unit, and malfunction
d6 and d7 for no. 792 indoor unit, LED3
nixie tube will display 00, 01, d5, d6,
07, 92, d6, d7 cyclely evey 2s. After
troubleshooting, it will enter into the next
step determination automatically. If it
needs to cut off power for outdoor unit
during troubleshooting process, perform
the debugging again from step 01 after
energization.
db ON 07 ON OC ON
No parts malfunction for indoor unit.
2s later, it will enter into the next
determination automatically.
08_ Preheat
conrmation for
compressor
db ON 08 ON UO ON
Preheat time for compressor is not
reached to 8h. Indicator will display
as shown by the left method until the
reheat time for compressor is reached to
8h. or short press SW7 button on main
board to conrm that the preheat time
is reached to 8h and then enter into the
next determination. (Note: If compressor
isn’t started up when the preheat time is
not reached to 8h, the compressor may
be damaged. Please be careful.)
db ON 08 ON OC ON
Preheat time for compressor is reached
to 8h. 2s later, it will enter into the next
step.
09_ Refrigerant
conrmation
before startup
db ON 09 ON U4 ON
Refrigerant in system is not sufcient.
The indicator will display by the left
method. Please disconnect the power
for indoor unit and outdoor unit, and
check whether the pipeline is leaking.
After leakage problem is solved,
recharge the refrigerant according to
requirement. After that, energize the
unit and perform the debugging from
step 01. (Note: Cut off the power for the
unit before recharging the refrigerant to
prevent the unit entering into step 10
during refrigerant-charging process)
db ON 09 ON OC ON
The refrigerant volume for the system
is normal. After it displayes as the left
method for 2s, it will enter into the next
determination automatically.

Gree MULTI VRF SYSTEM II GMV-120WL/A-T Specifications

General

Brand	Gree
Model	MULTI VRF SYSTEM II GMV-120WL/A-T
Category	Inverter
Language	English