Error Indication - Gree GMV-WQ72WM/A-F Owner's Manual

(1) When installing remote monitor or central controller, displacement on indoor units' project codes should be
set. Otherwise, collision malfunction of the project codes may happen. For detail operation methods, please
refer to the Water-cooled Multi VRF System Installation and Maintenance Manual.
(2) If problem cannot be solved after checking above items, please contact Gree service center and show
phenomena and models.
Following phenomena are not malfunction.
Unit doesn't starts up after it is just being turned
Unit doesn't
off.
operate
When power is turned on.
Mist comes from
Under cooling.
the unit
Slight cracking sound is generated when just
turned on.
There is consecutive sound when cooling.
Noise is emitted There is sound when unit starts or stops.
There is slight and consecutive sound when unit
is running or after running.
Cracking sound is heard when unit is operating
and after operating.
The unit blows When unit runs after no operation for a long
out dust period.
The unit emits
Operating.
odor
Indoor unit still
After every indoor unit receive "stop" signal, fan
runs after switch
will keep running.
off

7 Error Indication

Inquiry method of error indication: combine division symbol and content symbol to check the
corresponding error.
Indoor:
Error Code
L0 Malfunction of IDU.
L1 Protection of indoor fan.
L2 Auxiliary heating protection.
L3 Water-full protection
Abnormal power supply for wired
L4
controller.
L5 Freeze prevention protection.
L7 No master IDU.
L8 Insufficient of power supply.
For single control over multiple units,
L9
number of IDU is inconsistent.
Malfunction
Content
Water-cooled Heat Recovery DC Inverter VRF
Overload protection switch makes it run after
3 minutes delay.
Standby operating for about 1 minute.
Indoor high humidity air is cooled rapidly.
Electronic expansion valve initialization.
That's sound for gas refrigerant flowing in
unit.
That's sound for gas refrigerant stops to
flow.
That's sound for operation of drainage
system.
That's sound caused by expansion of panel
and other parts due to temperature change.
Dust in indoor unit is blew out.
The room odor absorbed by the unit is blew
out again.
Indoor fan motor will keep running 20-70s so
as to take good use of excess cooling and
heating and prepare for next operation.
Error Code
Malfunction of lower water
d2
temperature sensor of water tank.
Malfunction of indoor ambient
d3
temperature sensor.
Malfunction of refrigerant in-tube
d4
temperature sensor.
Malfunction of refrigerant out-tube
d6
temperature sensor.
d7 Malfunction of humidity sensor.
Malfunction of water temperature
d8
sensor.
d9 Malfunction of jumper cap.
dA Web address of IDU abnormal.
dH PCB of wired controller abnormal.
49
Reason
Content