Haier GE NS23AM Service Manual page 36

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
427 21
2 2
428 22
Priority Actual Displayed Component or System Operational State
Condition Alert Text and Troubleshooting Tip
The inverter has detected a DC peak fault condition.
• If condition (55A or higher) is detected, outdoor unit will stop (compressor
• Anti-short cycle is initiated.
• If peak current (55A or higher) occurs 10 times within an hour, system will
•
• If the unit is a variable capacity heat pump, this error may occur entering
Service
Soon/ OD Inverter DC
Service Peak Fault
Urgent
• Refer to the unit service documentation for detailed troubleshooting
NOTE:
The sequence is:
• Red LED: Two Flashes
• Green LED: One Flash
NOTE:
The inverter has detected a high main input current condition.
• If condition is detected, outdoor unit will stop (compressor and fan) –
• Anti-short cycle is initiated.
• If condition occurs 10 times within an hour, system will lockout – critical
•
Service
OD Inverter
Soon/ • Refer to the unit service documentation for detailed troubleshooting
High Main Input
Service
Current
Urgent
The sequence is:
• Red LED: Two Flashes
• Green LED: Two Flashes
NOTE:
Table 11. Alert Codes and Troubleshooting
and fan) – moderate condition.
lockout – critical condition.
or exiting a defrost cycle as the compressor restarts after the 30 second
compressor shift delay. If the unit was manufactured prior to serial
number 5817F and has frequent alert code 427, then compare the
inverter part number to the latest part number listed in the unit repair
parts. Units produced after serial number 5817F which is listed on the
unit name plate have an inverter with updated software that includes
compressor current slope logic to reduce the potential of alert code 427
instances from occurring during defrost. Replace the inverter with the
latest inverter if necessary.
procedures.
Serial number format on unit name plate is PPYYMNNNNN (PP
= Manufacturing Plant, YY and M represents the year and month
made.
Inverter normal operations with no error code present is as
follows. Red LED is ON and Green LED is OFF.
moderate condition.
condition.
procedures.
Inverter normal operations with no error code present is as
follows. Red LED is ON and Green LED is OFF.
Page 36
How to Clear
Alert Code
To clear, disconnect
and reconnect power
to outdoor control.
To clear, disconnect
power to outdoor unit
and restart.
31-5000746 Rev. 0