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14 Operation Control
14.1.
Compressor Operation Frequency
• The compressor operation frequency is determined by room temperature, capacity, and model type.
- When operation is started after the air conditioner has been stopped for more than one hour, the air conditioner operates at a
high frequency which lowers the room temperature quickly for cooling (or raises it quickly for heating).
- If two or more indoor units are operating simultaneously, the thermostat is set to OFF in one room; the automatic expansion
valve is closed to adjust the flow of refrigerant so as to control the room temperature.
- When the thermostat is set to OFF during 1-room operation, the compressor and fan of the outdoor unit are stopped. (The
outdoor unit fan is stopped 30 seconds after the compressor stops).
- It takes about 180 seconds to restart operation when the compressor has been stopped (Time delay safety control)
14.2. Deice Operation
• During Heating operation, the deice operation judgment method:
According to outdoor heat exchanger temperature, operation time and outdoor air temperature.
• Deice operation
- The outdoor heat exchanger temperature falls below 3
C continuously for 3 minutes
- During deice operation; the 4-way valve is switched to cooling cycle to melt the frost.
- Deice operation ends about 12 minutes of operation or the temperature of heat exchanger rises above 25
C.
Summary of Contents for CS-MRE7MKE
Page 15: ...15 4 Location of Controls and Components 4 1 Indoor Unit 4 2 Outdoor Unit 4 3 Remote Control ...
Page 16: ...16 5 Dimensions 5 1 Indoor Unit ...
Page 17: ...17 5 2 Outdoor Unit ...
Page 18: ...18 6 Refrigeration Cycle Diagram ...
Page 19: ...19 7 Block Diagram ...
Page 20: ...20 8 Wiring Connection Diagram 8 1 Indoor Unit ...
Page 21: ...21 8 2 Outdoor Unit ...
Page 22: ...22 9 Electronic Circuit Diagram 9 1 Indoor Unit ...
Page 23: ...23 9 2 Outdoor Unit ...
Page 24: ...24 10 Printed Circuit Board 10 1 Indoor Unit 10 1 1 Main Printed Circuit Board ...
Page 25: ...25 10 1 2 Power Printed Circuit Board 10 1 3 Indicator Printed Circuit Board ...
Page 26: ...26 10 2 Outdoor Unit ...
Page 79: ...79 18 1 3 To remove power electronic controller 18 1 4 To remove discharge grille ...
Page 80: ...80 18 1 5 To remove control board 18 1 6 To remove cross flow fan and indoor fan motor ...
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Page 86: ...86 19 1 1 2 CS MRE9MKE ...
Page 87: ...87 ...
Page 88: ...88 19 1 2 Two Indoor Unit Operation 19 1 2 1 CS MRE7MKE x2 ...
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Page 90: ...90 19 1 2 2 CS MRE9MKE CS MRE7MKE ...
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Page 94: ...94 19 2 1 2 CS MRE9MKE ...
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Page 96: ...96 19 2 1 3 CS MRE12MKE ...
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Page 98: ...98 19 2 2 Two Indoor Unit Operation 19 2 2 1 CS MRE7MKE x2 ...
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