Haier GE NS18HM Service Manual page 77

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 9
433 29
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 Over-
Urgent current
Component or System Operational State and Troubleshooting
Tip
Compressor phase current is too high.
• During initial startup, a six minute time delay is implement to prevent
the alarm from occurring.
• Error occurs when compressor peak phase current is greater than
28 amps.
• Inverter will issue inverter code 14 first and slow down to try to
reduce the current.
• If the current remains high, outdoor unit will stop (compressor and
fan) – moderate condition.
• Cycle timer is initiated.
• If condition occurs five times within 60 consecutive minutes, the
system will lockout – critical condition.
• This alert code may be triggered by the inverter or the GE
Appliances variable capacity outdoor (inverter controlled) unit.
• GE Appliances outdoor control may trigger an this alert code if
the inverter reduces the compressor speed which is identified as
a alert code 441 and the compressor speed (in hz) is below the
minimum speed. This will typically occur at start-up. The inverter
automatically increases the compressor minimum speed below
45ºF in the heating mode and above 115ºF ensure the compressor
capacity is sufficient for oil return. If alert code 433 occurs and
inverter does not indicate an inverter code 29, the GE Appliances
communicating GE Appliances outdoor control triggered the alert
code 433.
• Inverter LEDs will flash code 29.
• Refer to the unit service documentation for detailed troubleshooting
procedures.
Inverter flash code 29.
The sequence is:
• Red LED: Two Flashes
• Green LED: Nine Flashes
NOTE:
Inverter normal operations with no error code present is as
follows. Red LED is ON and Green LED is OFF.
Page 77
How to Clear Alert
Code
To clear alert code
disconnect power
to both the indoor
and outdoor units
and then reconnect
power. Restart
system.