Gree GMVVQ1015WM/C-X, Service Manual

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Gree GMV6 HR DC Inverter VRF Units Service Manual
220
3 Non-fault Type Troubleshooting
3.1 The Unit Does Not Start
Problem Reason Solution
The unit does not start
No power Connect the air conditioning unit with a power
The line voltage is too low
Check whether the line voltage is within the
specified range
The fuse or breaker is disconnected Replace the fuse or connect the breaker
Low battery of the remote controller Replace the battery
The remote controller is beyond the
control range Keep the remote controller within the 8 m
control range
3.2 The Unit Stops During Operation
Problem Reason Solution
The air conditioning unit
stops after operating for
a very short time
The air inlet or air outlet of the indoor
or outdoor unit is blocked
Remove obstacles
3.3 Some Indoor Units Do Not Work
Problem Reason Solution
Some indoor units do
not work
The indoor unit is incompatible with the
outdoor unit
①
Install communication terminals block
②
Use compatible indoor units
The power cord is not connected
properly
Connect the power cord properly
The voltage does not meet
requirements
Provide the proper voltage
3.4 Unit Operates Without Cooling/Heating
Problem Reason Solution
Malfunctioned cooling
and heating
The air inlet or air outlet of the indoor
or outdoor unit is blocked
Remove obstacles
Improper set of temperature
Adjust the settings of the remote controller or
wired controller
The fan speed is too low
Adjust the settings of the remote controller or
wired controller
Incorrect wind direction
Adjust the settings of the remote controller or
wired controller
The door or window is open Close the door or window
Direct exposure to sunlight Hang a curtain or shutter on the window
Too many people in the room —
Too many sources of heat in the room Reduce the sources of heat
The filter is dirty and blocked Clean the filter
3.5 Loud Noises or Overwhelming Vibrations During Operation
Problem Reason Solution
The air conditioning unit
generates noise
A slight click is generated when the
unit starts to operate Sound made by the electronic expansion valve
during the initialization
Continuous sizzles during cooling
Sound made by the gas state refrigerant when
it flows within the unit
Sizzles when the unit starts and stops
Sound made when the gas state refrigerant
stops flowing
Continuous and slight sizzles during
operation and after operation
Sound of operating of the drainage system
Creaking sounds during operation
and after operation Sound due to friction of expanded panels and
other parts because of temperature change