Haier GE NS23AM Service Manual page 37

NOTE: System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest
active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed.
GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat
Inverter Flash
Code
Alert Inverter
Code Code
Red Green
LED LED
2 3
429 23
2 6
430 26
31-5000746 Rev. 0
Priority Actual Displayed Component or System Operational State
Condition Alert Text and Troubleshooting Tip
The inverter has detected a DC link low voltage condition.
• On a call for compressor operation, if DC link power in inverter does not
• If condition is detected, outdoor unit will stop (compressor and fan) –
• An anti-short cycle timer is initiated. If condition occurs 10 times within
• The outdoor control anti-short cycle timer will time out and the unit will
•
• Refer to the unit service documentation for detailed troubleshooting
Service
Soon/ OD Inverter DC
The sequence is:
Service Link Low Voltage
Urgent
• Red LED: Two Flashes
• Green LED: Three Flashes
NOTE:
Troubleshooting Suggestions:
•
•
•
•
•
Go to outdoor unit service manual for detail troubleshooting procedures
and require values for testing DC link voltages and various insulation
resistance characteristics.
Compressor start-up failure.
• If condition is detected, outdoor unit will stop (compressor and fan) –
• Anti-short cycle is initiated.
• If condition occurs 10 times within 60 consecutive minutes, the system
•
• Refer to the unit service documentation for detailed troubleshooting
Service
OD Inverter
Soon/
Compressor
Service
Startup Fail
Urgent
The sequence is:
•
•
NOTE:
•
•
•
Table 11. Alert Codes and Troubleshooting
rise above 180 VDC for 2- and 3-ton models, 250 VDC for 4- and 5-ton
models within 30 seconds, the control will display a moderate code.
moderate condition.
a 60 consecutive minutes, system will lock out and display alert code
429 – critical condition.
recycle the demand.
procedures. Perform test function and verify inverter DC link and line
before replacing inverter board.
Inverter normal operations with no error code present is as
follows. Red LED is ON and Green LED is OFF.
Check wire connections (U, V and W) at inverter plug in harness
and compressor.
Check the resistance of compressor windings. If not in range,
replace compressor.
Check compressor to ground. If ground issue, replace compressor.
Check input power (Single Phase - 208/230VAC + 10%. If out of range,
correct main power issue.
Check DC Link voltage and MICOM Sensing voltage. If out of range,
replace inverter. if okay, possible mechanical issue with compressor.
moderate condition.
will lockout – critical condition.
procedures.
Red LED: Two Flashes
Green LED: Six Flashes
Inverter normal operations with no error code present is as
follows. Red LED is ON and Green LED is OFF.
Check refrigerant
Replace outdoor control board
Replace inverter.
Page 37
How to Clear
Alert Code
Automatically clears
when the system
detects that the
issue no longer
exists.
To clear, disconnect
power to outdoor unit
and restart.