Haier GE NS18HM Service Manual page 62

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
4
441 14 1 flash
flashes
600
Table 19. Outdoor Control 7-Segment Display Alert Codes - Compressor
Priority Actual Displayed
Component or System Operational State and Troubleshooting Tip
Condition Alert Text
This alert code is for more information than an issue with the system.
• When the inverter gets close to the current or heat sink temperature
• Compressor slowdown due to high compressor current.
• Compressor current is approaching limit.
• The compressor speed automatically slows.
• This error code is primarily for informational purposes as the inverter
• The inverter will reduce the compressor speed by 4 Hz and slow the
OD Inverter Com-
Information pressor Slowdown
Only-Dealer - High Compres-
• The control sets indoor CFM and outdoor RPM to values according
sor Current
• Possible issue is system running at high pressures.
• Check for high pressure trips or other alert codes in thermostat and
• Inverter LEDs will flash code 14.
• Refer to the unit service documentation for detailed troubleshooting
Inverter flash code 14.
The sequence is:
•
•
NOTE:
Compressor has been cycled OFF on utility load shedding.
• Load shedding function provides a method for a local utility company
Information
Load Shed Event
Only-Dealer
• The feature is activated by applying 24VAC power across the L and
Page 62
limit, it will limit the ramp rate. Instead of changing compressor
speed at 1 hz/second, it changes to 5 hz/20 seconds.
controls the compressor to operate within design parameters. Alert
code 441 typically occurs at startup as the compressor current
increases rapidly during startup.
compressor ramp up speed to the requested compressor demand
speed (capacity). This is normal and expected operation of the
inverter to control the inverter within design parameters. In most
cases the alert code 441 notification does not require any additional
service or diagnostic procedures.
to demand percentage rather than the actual Hz.
outdoor control.
procedures.
Red LED: One Flash
Green LED: Four Flashes
Inverter normal operations with no error code present is as
follows. Red LED is ON and green LED is OFF.
to limit the maximum power level usage of the outdoor unit.
C terminals on the outdoor control
How to Clear Alert
Code
Automatically clears
when the condition
no longer exists.
Automatically clears
when L terminal is
inactive.
31-5000751 Rev. 0