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SiUS121827E Troubleshooting for Outdoor Unit
Part 6 Service Diagnosis 217
7.13 High Pressure Control in Cooling
Error Code F6
Outdoor Unit LED
Display
A j 1 i 2 h 3 i 4 i 5 h
Method of Error
Detection
High pressure control (operation halt, frequency drop, etc.) is activated in cooling operation if the
temperature sensed by the outdoor heat exchanger thermistor exceeds the limit.
Error Decision
Conditions
The temperature sensed by the outdoor heat exchanger thermistor rises above about 62.5°C
(144.5°F).
The error is cleared when the temperature drops below about 49.5°C (121.1°F).
Supposed
Causes
The installation space not large enough
Dirty outdoor heat exchanger
Defective outdoor fan motor
Defective stop valve
Defective electronic expansion valve or coil
Defective outdoor heat exchanger thermistor
Defective outdoor unit PCB
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