Lennox iComfort S30, Installation And Setup Manual

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Table 19. Alert Codes and Troubleshooting
Initial notification of critical alerts will pop-up on the home screen and will be listed under notification menu. Minor and moderate alerts are found only under the notification menu. Moderate alerts
are not e-mailed to Homeowners. Dealers will get an email and code can be seen on thermostat under the installer notification section.
NOTE: Anytime the word DEVICE or DEVICE2 is used in this table, it will be replaced on all alert code notification screens with the actual offending device name, for example, thermostat, heat
pump, etc.).
Alert
Code
Inverter
Flash
Code
Priority
Condition
Applicable
Component
Actual Displayed
Alert Text
Component or System Operational State and Troubleshooting Tip
430 26
Moderate /
Critical
Variable
capacity
outdoor unit*
OD Inverter
Compressor
Startup Fail
Compressor start-up failure.
• If condition is detected, outdoor unit will stop (compressor and fan) – moderate condition.
• Anti-short cycle is initiated.
•
If condition occurs 10 times within 60 consecutive minutes, the system will lockout – critical condition.
• Inverter LEDs will flash code 26.
• Refer to the unit service documentation for detailed troubleshooting procedures.
Inverter flash code 26.
The sequence is:
• Red LED: Two Flashes
• Green LED: Six Flashes
NOTE: Inverter normal operations with no error code present is as follows. Red LED is ON and Green LED is OFF.
• Check refrigerant
• Replace outdoor control board
•
Replace inverter.
To clear, disconnect power to outdoor unit and restart.
431 27
Moderate /
Critical
Variable
capacity
outdoor unit*
OD Inverter PFC
Fault
The inverter has detected a PFC circuit over-current condition
.
• Error occurs when PFC detects an over current condition of 100A peak.
• If condition is detected, outdoor unit will stop (compressor and fan) – moderate condition.
• Anti-short cycle timer is initiated.
•
If condition occurs 10 times within 60 consecutive minutes, the system will lockout – critical condition.
• Inverter LEDs will flash code 27.
• Refer to the unit service documentation for detailed troubleshooting procedures.
Inverter flash code 27. The sequence is:
• Red LED: Two Flashes
•
Green LED: Seven Flashes
To clear, disconnect power to outdoor unit and restart.