Common Malfunction And Troubleshooting - Gree GMV-72WM/B-U Owner's Manual

GMV DC Inverter VRF
Reference of Debug Parameters of GMV5 DC Inverter Multi VRF System
No. Debug item
14
15
System
IDU
parameters
16
17
Communi
18 -cation Communication data
parameter
Drainage
19
system
20 Others
*Different compressor operating frequency ranges are different.

6 Common Malfunction and Troubleshooting

Check the following items before contacting for repair.
Phenomenon
Without power supply
Voltage is too low
The unit doesn't
Broken fuse or breaker trips off
run.
Insufficient energy of remote controller
Remote controller is out of control scope
Unit runs but stop Air intake or outlet of indoor or outdoor unit is
immediately blocked
Air intake or outlet of indoor or outdoor unit is
blocked
Improper temperature setting
Fan speed is set too low
Abnormal cooling or
Wind direction is not correct
heating
Door or windows are opened
Direct sunshine
Too many people in the room
Too many heat resources in the room
Filter is blocked for dirt
Parameter name
Ambient temp of IDU
Inlet tube temp of
indoor heat exchanger
Outlet tube temp of
indoor heat exchanger
Opening angle of indoor
EXV
——
——
Reason
Unit
ºC(°F)
● According to different ambient temp, for a same IDU
ºC(°F)
under cooling mode, inlet tube temp will be
1~7ºC(33.8~44.6°F) lower than outlet tube temp.
● For a same IDU under heating mode, inlet tube temp
ºC(°F)
will be 10~20ºC(50~68°F) lower than outlet tube temp.
Adjusts opening angle automatically in 200~2000PLS
PLS
or 70~480PLS.
Quantity of IDU and ODU detected by software is the
—
same with actual quantity. No communication error.
IDU can drain water out completely and smoothly.
Condensate pipe has no backward slope of water.
—
Water of ODU can be drained completely through
drainage pipe. No water drop from unit base.
Compressor and indoor/outdoor fan motor has no
ºC(°F)
strange noise. Unit operates normally.
Connect to power supply
Check if the voltage is within rating range
Replace fuse or connect breaker
Replace new battery
Control scope is within 8m
Remove obstruction
Remove obstruction
Adjust setting at wireless remote controller or
wired controller
Adjust setting at wireless remote controller or
wired controller
Adjust setting at wireless remote controller or
wired controller
Close the door or windows
Draw curtain or louver
——
Reduce heat resources
Clean the filter
50
Reference
——
Measure