Troubleshooting; Check Before Contacting Maintenance Serviceman - Gree KM48H4O Service Manual

current parameters.
⑤ Switch with the "＋" "－" to the target value, and then press "Enter" key: the function section display
"Fo" code uninterrupted and the data section flashes the new parameters uninterrupted.
3) After the unit is running in the "Fo" mode, please turn off the liquid stop valve.
4) Check the low pressure by operating the testing board. If the low pressure is 0.03Mpa for more than 30
second, please turn off the gas stop valve.
Note:
If the operation of Recover the refrigerant is not complete in ten minutes, it will exit automatic.

2 Troubleshooting

Warning!
a. In the event of abnormal conditions (like, stinky smell), please shut off the main power supply
immediately and then contact the GREE appointed service center; otherwise the continuous abnormal running
would damage the air conditioning unit and also would cause electric shock or fire hazard etc.
b. Do not repair the air conditioner personally but instead contact the professionally skilled personnel at the
GREE appointed service center, as the incorrect repair would cause electric shock or fire hazard etc.

2.1 Check before Contacting Maintenance Serviceman

Please check the following items before contacting the maintenance serviceman.
Conditions
The unit does not
run at all
The batteries voltage of the remote controller
Remote controller is out of the control scope
The unit stops soon Air inlet or outlet of indoor unit or outdoor
after it starts
Air inlet or outlet of indoor unit or outdoor
Cooling or heating
is abnormal
Note:
If the air conditioner still runs abnormally after the above check and handling, please contact the local
appointed service center and also give a description of the error occurred as well as the model of the unit.
Causes
Broken fuse or breaker is off
Power off
Power supply plug is loose
is insufficient
unit is blocked
unit is blocked
Temperature setting is improper
Air speed is set too low
Improper airflow direction
Door or window is open
Under direct sunshine
Too many people in the room
Too many heat sources indoors
The filter screen is dirt or blocked
Corrective actions
Replace the damaged fuse or close the breaker
Restart the unit after power supply resumes
Plug the power supply properly
Replace with new batteries
The distance shall be within 8m
Remove the obstacles
Remove the obstacles
Adjust the setting of remote controller or wire
controller
Adjust the setting of remote controller or wire
controller
Adjust the setting of remote controller or wire
controller
Close the door or window
Hang curtain or blinders over the window
Reduce the heat sources
Clean the filter screen
Super Free Match
Service Manual
MAINTENANCE
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