Gree GMV-1015WM/G-U, Service Manual

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Gree GMV6 DC Inverter VRF Units Service Manual
202
3 Non-fault Type Troubleshooting
①
If an abnormal situation (such as peculiar smell) occurs, please stop the operation immediately and turn
off the main Power, and then contact Gree authorized maintenance center. If the unit continues to
operate under abnormal situation, the air conditioner will be damaged and an electric shock or fire
accident may result.
②
Do not maintain the air conditioner by yourself, misoperation may cause electric shock or fire hazard.
Please contact professional personnel of Gree authorized maintenance center to maintain.
● Before asking for maintenance, please check the following issues first.
Problems Causes What to do
Unit doesn’t work.
Fuse or circuit breaker is cut off.
Replace fuse or reset the circuit
breaker.
Power failure.
Restart unit when power is
restored.
Power is not connected Connect the power.
Remote controller’s power is not enough. Replace new battery.
Remote controller is out of the control range. Control range is within 8m.
Unit runs but stops
immediately.
Air inlet or air outlet of indoor and outdoor units is
blocked.
Clear obstructions.
Abnormal cooling or
heating.
Air inlet or air outlet of indoor and outdoor units is
blocked.
Clear obstructions.
Improper temp setting.
Adjust setting at remote
controller or wired controller.
Fan speed is set too low.
Adjust setting at remote
controller or wired controller.
Wind direction is not correct.
Adjust setting at remote
controller or wired controller.
Door or window is open. Close the door or window.
Direct sunshine. Draw curtain or louver.
Too many people in the room. —
Too many heat resources in the room. Reduce heat resources.
Filter is blocked and dirty. Clean the filter.
NOTICE:
If problem cannot be solved after checking the above items, please contact Gree service center and describe
the cases and models.
● Following circumstances are not malfunctions.
Phenomenon Causes
Unit doesn’t run
When unit is started immediately
after it is just turned off
Overload protection switch makes it run after 3
minutes delay
When power is turned on Standby operating for about 1 minute
Mist comes from the
unit
Under cooling Indoor high humidity air is cooled rapidly
Noise is emitted
When the Power is connected, there
is small “dada” sound.
It is the sound of startup action of electronic
expansion valve.
When the system is conducting
cooling , defrosting or oil return,
there is continuous “sa
——
” sound.
This is the sound of refrigerant flowing inside the
unit.