Gree GVH24AK-K3DNC8A Service Manual page 62

Service Manual
6. Diagnosis for Overload and Discharge Malfunction (Outdoor unit malfunction)
Outdoor unit malfunction indicator status
Malfunction
Overload
Discharge
Main detection point:
●If the electron expansion valve is connected well? Is the expansion valve damaged?
●If the refrigerant is leakage?
●If the overload protector is damaged?
●If the discharge temp sensor is damaged?
Malfunction diagnosis process:
Installation and Maintenance
D5 D6 D16
□ ☆ ☆
■ □ ■
If the overload protector SAT
resistance of overload protector with ohmic
If the wiring terminal FA of electron
N
Check if the coil of electron
expansion is installed on the
valve normally
Check if the expansion valve
Replace overload
is blocked
protector SAT
Check refrigerant, if there is leakage,
please refer to specification
sensor is normal according to the
D30
□
☆
After the u nit
de-energized
for 20min
is well connected?
Y
Under ambient temperature, test the
meter, the resistance value<10000
Y
expansion is well connected?
Y
Remove
malfunction?
N
Remove
malfunction?
N
check if the discharge temp
resistance sheet
Y
Replace control
board
End
N
Connect the wire
N
well according to
wiring disgram
Y
Y
Replace discharge
N
temp sensor
59