Gree NCHS8D - Troubleshooting Common Malfunctions

GMV6 HR Mode Exchange Box
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6.1 Notice before Seasonal Use
(1) Check whether air inlets and air outlets of indoor and outdoor units are blocked.
(2) Check whether ground connection is reliable or not.
(3) Check whether the wires are connected well.
(4) After getting through power, check whether there’re characters on the screen of wire
controller.
6.2 Maintenance after Seasonal Use
(1) Run the air conditioner at fan mode for half day at sunny day to dry the internal parts of unit.
(2) If you don’t use the air conditioner for a long time, please cut off the power to save energy.
After cutting off the power, the characters on the screen of wire controller will disappear. After
cutting off the power, the characters on the screen of wire controller will disappear.
7 Troubleshooting
If the air conditioner can’t operate normally, please check below items before asking for service:
Malfunction Causes
Air conditioner can’t be started up
①
It hasn’t been put through power.
②
Leakage switch is tripped.
③
Voltage is too low.
④
Working buttons are off.
⑤
Malfunction of control loop.
Air conditioner can operate, but it will stop
operate after for a while
①
There’s obstacle in front of condenser.
②
Control loop is abnormal.
③
Turn on the cooling mode when the outdoor ambient temperature
is more than 43°C.
Cooling effect is bad
①
Air filter is dirty or blocked.
②
There are heat source or too many people in the room.
③
Door or winder is open.
④
There’re obstacles at air inlet and air outlet.
⑤
Set temperature is too high or refrigerant is leaking.
⑥
Specification of room temperature sensor is not good.
Heating effect is bad
①
Air filter is dirty or blocked.
②
Door or window is not closed well.
③
Set temperature is too low.
④
Refrigerant is leaking.
⑤
Outdoor ambient temperature is lower than -5°C.
⑥
Control wiring is abnormal.
Indoor fan can’t be started up under
heating mode
①
The installation position for the tube temperature sensor is not
proper.
②
Tube temperature sensor is not inserted well.
③
Wires for tube temperature sensor is broken.
④
Capacitor is leaking.
NOTE!
After checking above items, if the air conditioner still can’t operate normally, please stop the air
conditioner immediately and then contact appointed maintenance center.