Haier GE NS18HM Service Manual page 75

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 6
430 26
flashes flashes
2 7
431 27
flashes flashes
Table 24. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
31-5000751 Rev. 0
Priority Actual Displayed
Condition Alert Text
Service Soon/ OD Inverter
Service Compressor
Urgent Startup Fail
Service Soon/
OD Inverter PFC
Service
Fault
Urgent
Component or System Operational State and Troubleshooting
Tip
Compressor start-up failure.
• If condition is detected, outdoor unit will stop (compressor and fan)
– moderate condition.
• Anti-short cycle is initiated.
• If condition occurs 10 times within 60 consecutive minutes, the
system will lockout – critical condition.
• Inverter LEDs will flash code 26.
• Refer to the unit service documentation for detailed troubleshooting
procedures.
Inverter flash code 26.
The sequence is:
• Red LED: Two Flashes
• Green LED: Six Flashes
NOTE: 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.
The inverter has detected a PFC circuit over-current condition.
• Error occurs when PFC detects an over current condition of 100A
peak.
• If condition is detected, outdoor unit will stop (compressor and fan)
– moderate condition.
• Anti-short cycle timer is initiated.
• If condition occurs 10 times within 60 consecutive minutes, the
system will lockout – critical condition.
• Inverter LEDs will flash code 27.
• Refer to the unit service documentation for detailed troubleshooting
procedures.
Inverter flash code 27.
The sequence is:
• Red LED: Two Flashes
• Green LED: Seven Flashes
NOTE: Inverter normal operations with no error code present is as
follows. Red LED is ON and Green LED is OFF.
Page 75
How to Clear Alert
Code
To clear, disconnect
power to outdoor unit
and restart.
To clear, disconnect
power to outdoor unit
and restart.