96
Error Code Diagnostics
F6 - F9 Temperature Sensor Codes
See troubleshooting chart preceding page
Decrease frequency due to overload.
Status:
All systems operate normal with decrease in
capacity
1. Refer to “E8” troubleshooting procedures
Fault & Status Possible Causes
Normal functionOil Return in Cooling
Decrease frequency due to overcurrent.
Status:
All systems operate normal with decrease in
capacity
1. Input voltage too low.
2. System pressure is too high
Decrease frequency due to high discharge
air.
Status:
All systems operate normal with decrease in
capacity
1. Cooling load is too great
2. Outdoor ambient too high
3. Refrigerant undercharge
4. Electronic expansion valve fault
F6
F7
F8
F9
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