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Status Codes:
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
N/A
N/A
ON
OFF
N/A
N/A
ON
ON
N/A
N/A
OFF
OFF
Table 26. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
Error Codes:
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
4
423
40
OFF
426
Table 27. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
31-5000746 Rev. 0
Priority
Actual Displayed
Condition
Alert Text
N/A
NS23A36M only: Indicates inverter is operating normally.
N/A
NS23A60M only: Indicates inverter is operating normally.
N/A
Indicates inverter is NOT energized.
Priority
Actual Displayed
Condition
Alert Text
Service Soon/
OD Inverter CT
Service
Circuit Fault
Urgent
Service
OD Excessive
Urgent
Inverter Alarms
Component or System Operational State and Troubleshooting
Tip
Component or System Operational State and Troubleshooting
Tip
The inverter has detected a circuit issue.
• When this condition is detected the outdoor control will stop outdoor
unit operations and start the anti-short cycle timer – moderate
condition.
• Outdoor control will lockout unit after 10 strikes within an hour –
critical condition.
•
• Refer to the unit service documentation for troubleshooting
procedures.
The sequence is:
Red LED: Four Flashes
NOTE:
Inverter normal operations with no error code present is as
follows. Red LED is ON and Green LED is OFF.
After 10 faults within 60 consecutive minutes, the control will lockout.
NOTE:
These inverter codes do not count towards this lockout
condition.
Page 81
How to Clear Alert
Code
How to Clear Alert
Code
A moderate alert
code will clear auto-
matically when the
inverter detects the
condition no longer
exist and will send
a clear alert code
message.
To clear critical alert
code disconnect
power to outdoor unit
and restart.
To clear disconnect
power to outdoor
control and restart.
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