74
12.5 Compressor Overheating Prevention Control (For S18, S24, 28NK only)
•
Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The
changes of frequency are as below.
•
If compressor discharge temperature exceeds 112°C, compressor will be stopped, occurs 4 times per 20 minutes,
timer LED will be blinking. “F97” is indicated.
Compressor=OFF
Compressor Frequency
Reduced
Compressor Frequency
Maintain
Free
Comp Discharge temperature
112°C
96°C
110°C
100°C
97°C
90°C
12.6 Low Pressure Prevention Control (Gas Leakage Detection)
•
Control start conditions
o
For 5 minutes, the compressor continuously operates and outdoor total current is between 0.65A and 1.65A.
o
During Cooling and Soft Dry operation:
Indoor suction temperature – indoor piping temperature is below 4°C
•
Control
contents
o
Compressor stops (and restart after 3 minutes).
o
If the conditions above happened 2 times within 20 minutes, the unit will:
Stop
operation
Timer LED blinks and “F91” indicated.
12.7 Compressor Tank Temperature Rise Protection Control
•
Control start conditions
o
For 5 minutes, the compressor continuously operates and outdoor total current is between 0.65A and 1.65A.
o
During Cooling and Soft Dry operation:
Indoor suction temperature -indoor piping temperature is below 4°C.
Indoor temperature and outdoor temperature is 30±5°C.
Remote Control setting 16°C and Hi Fan Speed.
•
Control
contents
o
Compressor stops (and restart after 3 minutes)
o
If the conditions above happened 2 times within 20 minutes, the unit will:
Stop
operation
Timer LED blinks and “F91” indicated.
12.8 Low Frequency Protection Control 1
•
When the compressor operates at frequency lower than 24Hz continued for 20 minutes, the operation frequency
will be changed to 23Hz for 2 minutes.
12.9 Low Frequency Protection Control 2
•
When all below conditions comply, the compressor frequency will changed to lower frequency.
Temperature, T, for:
Cooling / Soft Dry
Indoor intake air (°C)
T < 15 or T
≥
30
Outdoor air (°C)
T < 16 or T
≥
38
Indoor heat exchanger (°C)
T < 30
Summary of Contents for CS-S9NKV
Page 15: ...15 4 2 3 CU S18NKV CU S24NKV...
Page 16: ...16 4 2 4 CU S28NKV...
Page 17: ...17 5 Refrigeration Cycle Diagram 5 1 CS S9NKV CU S9NKV CS S12NKV CU S12NKV...
Page 18: ...18 5 2 CS S18NKV CU S18NKV CS S24NKV CU S24NKV...
Page 19: ...19 5 3 CS S28NKV CU S28NKV...
Page 24: ...24 7 Wiring Connection Diagram 7 1 Indoor Unit 7 1 1 CS S9NKV CS S12NKV...
Page 25: ...25 7 1 2 CS S18NKV CS S24NKV...
Page 26: ...26 7 1 3 CS S28NKV...
Page 31: ...31 8 Electronic Circuit Diagram 8 1 Indoor Unit 8 1 1 CS S9NKV CS S12NKV...
Page 32: ...32 8 1 2 CS S18NKV CS S24NKV...
Page 33: ...33 8 1 3 CS S28NKV...
Page 41: ...41 9 1 5 Human Activity Sensor Printed Circuit Board...
Page 42: ...42 9 2 Outdoor Unit 9 2 1 Main Printed Circuit Board 9 2 1 1 CU S9NK...
Page 43: ...43 9 2 1 2 CU S12NK...
Page 44: ...44 9 2 1 3 CU S18NK CU S24NK...
Page 45: ...45 9 2 1 4 CU S28NK...
Page 46: ...46 9 2 2 Noise Filter Printed Circuit Board 9 2 2 1 CU S9NKV...
Page 47: ...47 9 2 2 2 CU S28NKV...
