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Operation Details
d.
Power Transistor Overheating Prevention Control
•
When the power transistor temperature rises to 110°C, the OLP goes into operation and compressor stops
immediately. The compressor is restarted when the power transistor temperature decreases to 95°C after
3 minutes (Time Delay Safety Control).
e.
Compressor Overheating Prevention Control
•
When the temperature of compressor rises to 108°C, the frequency is reduced as shown in diagram below.
When the temperature rises to 118°C or above, the compressor stops. The compressor will start operating
at low frequency when the temperature falls to 118°C and resume to normal condition when the temperature
falls to 95°C.
Compressor
temp. (°C)
Condition
f.
Low Pressure Control (Gas Leakage Detection)
•
When the following conditions as shown in the below table occur, the compressor stops and restarts after
3 minutes. If this phenomenon is continuously occuring twice within 20 minutes, the air conditioner will stop
operation and the Timer LED blinks. At this time, [F91] is displayed on the indoor unit.
Comp. Frequency *
Total Running
Current
Indoor Heat
Exchanger Temp.
Operation
Model No.
Note: The above conditions are not valid during Deice operation.
*
Comp OFF
118
max 40 Hz (CU-G90KE)
max 43 Hz (CU-G120KE)
112
max 55Hz
108
Free
95
When temperature rises
72 Hz
≥ 1.88 A and
*
< 2.1 A
15°C
or above
Cooling/Soft Dry
CU-G90KE
This conditions are continuous for 5 minutes.
Comp OFF
max 40 Hz (CU-G90KE)
max 43 Hz (CU-G120KE)
max 55 Hz
Free
When temperature falls
92 Hz
78 Hz
≥ 1.88 A and
≥ 1.88 A and
< 2.3 A
< 3.0 A
30°C
15°C
or below
or above
Heating
Cooling/Soft Dry
– 44 –
CS-G90KE
98 Hz
≥ 1.88 A and
< 3.6 A
30°C
or below
Heating
CU-G120KE
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