Overload System Protection Problem - Gree Neo GWH09MA-A3DNA3A Installation, Service & Troubleshooting

E8 Error Code

Overload System Protection Problem

E8
Overload System Protection Problem
Status:
Cooling operation, compressor stops while
indoor fans runs. Heating operation, complete
unit stops
No
Replace
Overload
Replace outdoor
AP1 control
board
148
Error Code Diagnostics
Start Troubleshooting
after unit is powered off for
20 minutes
Is the overload protector
positioned and wired
correctly?
Under normal ambient conditions, is
the resistance of the overload less
than 1000 ohms?
Are the wires to the expansion
valve connected per the
wiring diagram?
Resistance between the first 4
pins and the 5th pin should be
less than 100 ohms
Replace coil of electronic
expansion valve
No
Is system working
properly?
Yes
End Troubleshooting
1. Incorrect refrigerant charge
2. Metering device problem
3. Compressor failure
No
No
Correct wiring
problem
Is system operating
normal?
No
Check Refrigerant for
leakage and proper
charge
Compressor Overload
Metering Device
Yes