GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
27
⑫
Check whether ground connection is reliable or not;
⑬
Check whether the wires are connected well;
⑭
After getting through power, check whether there
’re characters on the screen of wire controller.
6.2 Maintenance after Seasonal Use
⑪
Run the air conditioenr at fan mode for half day at sunny day to dry the internal parts of unit.
⑫
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 docntroller will disappear.
7 Troubleshooting
If the air condtiioner 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 obstable in front of condenser
②
Control loop is abnormal
③
Turn on the cooling mode when the outdoor ambinet temperature is
more than 43
℃
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 otulet
⑤
Set temperature is too high or refrigerant is leaking
⑥
Specification of room tempeature 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
℃
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 porper
②
Tube temperature sensor is not inserted well
③
Wires for tube temperatrue sensor is broken
④
Capacitor is leaking
Caution
：
①
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.
