Troubleshooting SiENBE12-713
256 Service Diagnosis
5.17 High Pressure Control in Cooling
Remote Control
Display
F6
Outdoor Unit LED
Display
A 5 1 4 2 1 3 4 4 4
Method of
Malfunction
Detection
High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the
temperature being sensed by the heat exchanger thermistor exceeds the limit.
Malfunction
Decision
Conditions
" Activated when the temperature being sensed by the heat exchanger thermistor rises above
65°C.
" The error is cleared when the temperature drops below 50°C.
Supposed
Causes
" The installation space is not large enough.
" Faulty outdoor unit fan
" Faulty electronic expansion valve
" Faulty outdoor unit heat exchanger thermistor
" Faulty outdoor unit PCB
" Faulty stop valve
" Dirty heat exchanger
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