High Pressure Protection Of System - Gree Neo GWH09MA-A3DNA3A Installation, Service & Troubleshooting

E1 Error Codes
Compressor High Pressure Protection
E1

High Pressure Protection of System

Status:
During cooling & dehumidifying, indoor unit
operates while other functions stop; During
heating operation, complete unit stops
High Pressure Protection
Yes
Verify high pressure with gauge
Yes
Check mode of indoor unit setting
Yes
Check if gas and liquid valves are open
Yes
Check if panel of outdoor unit is firmly closed
Yes
Check air flow of indoor and outdoor units for
obstructions
Yes
Check for indoor and outdoor fan operation
Yes
Check operation of swing louver
Yes
Check indoor filter and coils for dirt
Yes
System piping is blocked
142
Error Code Diagnostics
Fault & Status
No
No
No
No
No
No
No
No
No
connecting each indoor unit and capillary of
indoor and outdoor units. Replace the parts
1. Refrigerant overcharge
2. Dirty outdoor coil
3. Blockage of airflow
4. Outdoor ambient too high
High Pressure switch abnormal
Refer to instruction manual of
indoor unit
Completely open all valves
Close the panel
Remove the barrier
Measure the fan motor input
Measure swing motor signal input
Refer to care and maintenance
Check inlet and outlet of main pipes
such as filter, etc as needed.
Possible Causes
No Replace Outdoor
Main Board
Yes
Replace pressure
switch