Haier GE NS18HM Service Manual page 79

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
6 2
436 62
flashes flashes
6 5
437 65
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 High Heat-Sink
Urgent Temperature
Service Soon/ OD Inverter Heat-
Service Sink temp Sensor
Urgent Fault
Component or System Operational State and Troubleshooting
Tip
Inverter heat sink temperature exceeded limit.
• This occurs when the heat sink temperature exceeds the inverter
limit. Inverter will issue inverter alert code 13 first and slow down to
try to cool the heat sink.
• If temperature remains high, outdoor unit will stop both compressor
and fan – moderate condition.
• Anti- short cycle is initiated.
• If condition occurs five times within an hour, system will lockout –
critical condition.
• The screws that hold the inverter to the inverter board were loose
causing poor contact between these two components.
• Tighten screws that hold the heat sink to the inverter control board.
NOTE:
Wait five minutes for all capacitors to discharge before
checking screws.
• Inverter LEDs will flash code 62.
• Refer to the unit service documentation for detailed troubleshooting
procedures.
Inverter flash code 62.
The sequence is:
• Red LED: Six Flashes
• Green LED: Two Flashes
NOTE:
Inverter normal operations with no error code present is as
follows. Red LED is ON and Green LED is OFF.
Heat sink temperature sensor fault has occurred (temperature less
than 4ºF or greater than 264ºF after 10 minutes of operation).
• When the temperature sensor detects a temperature less than 4ºF
or greater than 264ºF after 10 minutes of operation.
• Outdoor unit will stop both compressor and fan – moderate
condition.
• Anti-short cycle is initiated.
• If condition occurs five times within an hour, system will lockout –
critical condition.
• Inverter LEDs will flash code 65.
• Refer to the unit service documentation for detailed troubleshooting
procedures.
Inverter flash code 65.
The sequence is:
• Red LED: Six Flashes
• Green LED: Five Flashes
NOTE: Inverter normal operations with no error code present is as
follows. Red LED is ON and Green LED is OFF.
Page 79
How to Clear Alert
Code
Moderate condition
will automatically
clear when the
inverter sends an
alert code clear
message.
Critical condition
is cleared by
disconnecting power
to the outdoor unit
and restart.
Moderate priority
condition will
automatically clear
when the inverter
sends an alert code
clear message.
Critical priority
condition can
be cleared by
disconnecting and
reconnecting power
to outdoor unit to
restart.