Haier GE NS23AM Service Manual page 86

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
5 3
434 53
6
435 60 OFF
Table 27. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
Priority Actual Displayed
Condition Alert Text
Service Soon/ OD Inverter Comm
Service Error to Main
Urgent Control
OD Inverter
Service
EEPROM
Urgent
Checksum fault
Component or System Operational State and Troubleshooting
Tip
• Outdoor control has lost communications with the inverter
continuously during a single thermostat call and one hour period.
• Outdoor control will stop all compressor demands – moderate
condition.
• Indoor blower will stop functioning.
NOTE: Indoor blower will not run in test mode either when alert
•
the indoor unit power (24VAC to GE Appliances outdoor control)
Appliances outdoor control) and the outdoor unit power is on. This
could occur while performing service or maintenance procedures
on the indoor or outdoor unit.
• The GE Appliances outdoor control will attempt to re-establish
communication to the inverter when the alert code 434 occurs
energizing the contactor the GE Appliances outdoor control
will attempt to communicate to the inverter for three minutes.
This process will be repeated three times in attempt to establish
communication before locking out.
• If the unit is locked out with a critical alert code 434, reset the
control) and then back on.
• If this condition continuously occurs during a one hour period and
during a single thermostat call, the outdoor unit will lock out and
display alert code 434 – critical condition.
Troubleshooting Options:
• Check for loose or disconnected electrical connections.
• Interruption of main power to inverter.
•
• Refer to the unit service documentation for detailed troubleshooting
procedures.
The sequence is:
• Red LED: Five Flashes
• Green LED: Three Flashes
NOTE: Inverter normal operations with no error code present is as
follows. Red LED is ON and Green LED is OFF
Inverter internal error.
• When this error occurs, the outdoor control will cycle power to
the inverter by opening the contactor for two minutes – moderate
condition.
• Outdoor control will cycle power to the inverter three times and then
outdoor unit is locked out – critical condition.
•
• Refer to the unit service documentation for detailed troubleshooting
procedures.
The sequence is:
• Red LED: Six Flashes
•
NOTE: Inverter normal operations with no error code present is as
follows. Red LED is ON and Green LED is OFF.
Page 86
How to Clear Alert
Code
Automatically clears
when the system
detects that the issue
no longer exists.
If the unit is locked
out with a critical
alert code 434, reset
cycling the outdoor
back. Then cycle
(24VAC to the GE
Appliances outdoor
control) and then
back on.
To clear alert code
disconnect power
to outdoor unit and
restart.
31-5000746 Rev. 0