Diagnostic Codes - Gree VIR09HP115V1A Installation Manual

DIAGNOSTIC CODES

Troubleshooting
The Vireo System has onboard diagnostics. The outdoor unit will provide status indicators.
The indoor wall unit and remote controller will display error codes. The following is a summary
of the codes with explanation:
Malfunction Name
System High Pressure
Indoor Anti-Freeze Protection
Refrigerant Leakage Protection
Compressor High Discharge
Temperature Protection
Overcurrent Protection
Communication Malfunction
High Temperature
Resistant Protection
EEPROM Memory Malfunction
System Configuration
Malfunction
Pump Down or Gathering
Refrigerant Status
Indoor Unit
Outdoor Unit Indicators
& Remote
Yellow
Display
E1
3 flashes
E2
and
1 sec Off
F0
7 flashes
E4
and
1 sec Off
5 flashes
E5
and
1 sec Off
Continuous
E6
On
6 flashes
E8
and
1 sec Off
11 flashes
EE
and
1 sec Off
C5
17 flashes
Fo
and
1 sec Off
Possible Causes
Red
1) Over charged with refrigerant.
2) Blocked or dirty outdoor coil .
3) Extreme outdoor ambient conditions
1) Low return airflow.
2) Indoor fan speed is too low.
3) Indoor coil is blocked or dirty.
1) refrigerant leak(s).
9 flashes
2) Indoor coil temperature sensor no calibrated.
and
3) Refrigerant flow is restricted ( ex. valve, exv, debris)
1 sec Off
Please refer to the malfunction analysis (discharge
temperature, overload) in service manual.
1) Supply voltage is unstable.
2) Supply voltage is too low and system load is too high.
3) Indoor coil is blocked or dirty.
1) Communication cable is mis-wired between indoor
and outdoor units.
2) Indoor or Outdoor control board malfunction.
1) Incorrect refrigerant charge level.
2) Refrigerant metering device malfunction.
3) Compressor malfunction.
Control board malfunction.
1) No jumper cap inserted on the control board.
2) Incorrect or damaged jumper cap on control board.
3) Indoor and outdoor units are not compatible.
Optional Service Mode
26