Haier GE NS23AM Service Manual page 40

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
Priority Actual Displayed Component or System Operational State
Condition Alert Text and Troubleshooting Tip
• Outdoor control has lost communications with the inverter continuously
• Outdoor control will stop all compressor demands – moderate condition.
• Indoor blower will stop functioning.
NOTE:
•
• The outdoor control will attempt to re-establish communication to the
Service
• If the unit is locked out with a critical alert code 434, reset the system by
OD Inverter
Soon/
Comm Error to
Service
Main Control
Urgent
• If this condition continuously occurs during a one hour period and during
Troubleshooting Options:
• Check for loose or disconnected electrical connections.
• Interruption of main power to inverter.
•
• Refer to the unit service documentation for detailed troubleshooting
The sequence is:
•
•
NOTE:
Inverter internal error.
• When this error occurs, the outdoor control will cycle power to the inverter
• Outdoor control will cycle power to the inverter three times and then
•
• Refer to the unit service documentation for detailed troubleshooting
OD Inverter
Service
EEPROM
Urgent
Checksum fault
The sequence is:
•
•
NOTE:
Table 11. Alert Codes and Troubleshooting
during a single thermostat call and one hour period.
is active. Only after system reset will it operate.
indoor unit power (24VAC to outdoor control) remains on, or if the indoor
power is on. This could occur while performing service or maintenance
procedures on the indoor or outdoor unit.
inverter when the alert code 434 occurs by cycling the outdoor unit
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.
a single thermostat call, the outdoor unit will lock out and display alert
code 434 – critical condition.
procedures.
Red LED: Five Flashes
Green LED: Three Flashes
Inverter normal operations with no error code present is as
follows. Red LED is ON and Green LED is OFF
by opening the contactor for two minutes – moderate condition.
outdoor unit is locked out – critical condition.
procedures.
Red LED: Six Flashes
Inverter normal operations with no error code present is as
follows. Red LED is ON and Green LED is OFF.
Page 40
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
the indoor power
outdoor control) and
then back on.
To clear alert code
disconnect power
to outdoor unit and
restart.
31-5000746 Rev. 0