89
Table 19. Alert Codes and Troubleshooting
GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system and TS=Thermostat
Alert
Code
Inverter
Flash
Code
Priority
Condition
Actual Displayed
Alert Text
Under dealer
control center >
Notifications
Component or System Operational State and Troubleshooting Tip
How to clear alert code
437
65
Service
Soon/Service
Urgent
OD Inverter
Heat-Sink temp
Sensor Fault
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.
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.
438
73
Service
Urgent
OD Inverter PFC
Input Over-
current
The inverter has detected a power factor correction (PFC) circuit over-current condition
.
•
The inverter has detected an PFC over current condition. This may be caused by a high load
condition, high pressure, or outdoor fan failure.
•
Outdoor control will display the code when the inverter has detected the error – moderate
condition.
•
After three minutes, the inverter will reset and the compressor will resume operation.
• If the error condition occurs 10 times within a 60 minute rolling time period, the outdoor unit
control will lock out operation of the outdoor unit – critical condition.
• Possible issue is system running at high pressures.
• Check for high pressure trips or other alert codes in thermostat and outdoor control.
•
Inverter LEDs will flash code 73.
•
Refer to the unit service documentation for detailed troubleshooting procedures.
Inverter flash code 73.
The sequence is:
•
Red LED: Seven 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.
Moderate priority condition is
automatically cleared when the
inverter sends a clear message.
Critical priority condition will
automatically clear when inverter is
power cycled.
