R - A 26
Alert Code Response
Outdoor unit fault LED 11 flash
Comfort Control = No Error Code Displayed
User Interface = No Alert Displayed
Problem Description
• Liquid temperature fault
Possible Causes/Solutions
• Liquid Temperature Sensor shorted or open
- Zero or infinite resistance
• Liquid Temperature Sensor out of range
- Compare resistance value of sensor to chart in
literature
• No output voltage from control board
- With sensor disconnected, 5vDC should be
measured on control board
Outdoor unit fault LED 12 flash
Comfort Control = No Error Code Displayed
User Interface = No Alert Displayed
Problem Description
• Liquid pressure sensor fault
Possible Causes/Solutions
• Liquid Pressure Sensor shorted or open
- Zero or infinite resistance
• Liquid Pressure Sensor out of range
- Compare resistance value of sensor to chart in
literature
• No output voltage from control board
- With sensor disconnected, 5vDC should be
measured on control board
Outdoor unit fault LED 13 flash
Comfort Control = No Error Code Displayed
User Interface = No Alert Displayed
Problem Description
• External outdoor temperature sensor fault
Possible Causes/Solutions
• External ODT Sensor shorted or open
- Zero or infinite resistance
• External Sensor out of range
- Compare resistance value of sensor to chart in
literature
• No output voltage from control board
- With sensor disconnected, 5vDC should be
measured on control board
Outdoor unit fault LED 14 flash
Comfort Control = No Error Code Displayed
User Interface = No Alert Displayed
Problem Description
• The primary copy of the Personality Module (PM) data
file is corrupt but the local copy previously loaded is
good
- System will continue to operate with this error but a
fault will be displayed on user interface
Possible Causes/Solutions
• Replace PM
- PM could be corrupted due to power surge or
damaged due to faulty field wiring
Outdoor unit fault LED 17 Flash
Comfort Control:
- Err 80
- Wait
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