Panasonic CS-F14DD3E5, Руководство по обслуживанию

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9.8.5. CT Disconnection Detection Control
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CT disconnection detection control detects if the CT sensor works normally.
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The CT disconnection detection activates when:
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CT input value is maintained at compressor shutdown status (1.5A or less) consecutively for 2 seconds when the
compressor is operating; except deice mode.
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During this condition, compressor is shut down and indoor unit is set to thermo-off status.
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After 4 occasions, CT sensor error is displayed; all operations stopped except outdoor fan remaining heat removal
control.
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CT input value is maintained at compressor operation status (5A or more) consecutively for a period of 60 seconds when
the compressor is shut down.
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During this condition, CT sensor error is displayed.
9.8.6. Connection Capacity Protection Control
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The purpose of connection capacity protection control is to ensure the total capacity of connected indoor units is within
acceptable range.
Model Number Min Capacity (kW) Max Capacity (kW) Model Number Min Capacity (kW) Max Capacity (kW)
CU-B14DBE5 5.3 6.9 CU-B28DBE8 6.3 9.8
CU-B18DBE5 5.3 6.9 CU-B34DBE8 7.3 12.3
CU-B24DBE5 6.3 9.8 CU-B43DBE8 10.2 13.8
CU-B28DBE5 7.3 12.3 CU-B50DBE8 12.7 15.8
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During this protection control, connection capacity error is displayed; all operations stopped.
9.8.7. Sensor Disconnection Detection Control
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The sensor disconnection detection control activates when the following condition comply:
Sensor Detection Threshold Duration (Sec) Detection condition
Discharge Temperature < -4.5°C or 201.8°C 5 Other than compressor start control
and compressor ON
Outdoor heat exchange < -50.5°C or 103.7°C 5 Regularly
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During sensor disconnection, sensor error is displayed; all operations stops except outdoor fan remaining heat removal control.
9.8.8. Four-way Valve Error Detection Control
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The four-way valve error detection control starts when:
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During cooling operation, when indoor heat exchanger temperature exceeds 45°C in 5 minutes after compressor starts.
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During heating operation, when indoor heat exchanger temperature is below 5°C in 5 minutes after compressor starts.
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During four-way valve error, compressor is shut down and indoor unit is set to thermo-off status.
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After 3 occasions, four-way valve error is displayed; all operations stopped except outdoor fan remaining heat removal control.
9.8.9. Valve Error Detection Control
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This control is to protect the compressor.
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Valve error is detected if comply with condition below:
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Power is on for the first time and within 5 minutes from compressor starts (However, the unit is considered power on for first
time when compressor starts operating continuously for 7 minutes).
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Indoor heat exchanger temperature at compressor start -3°C < current heat exchanger temperature for 1 minute.
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During this error, four-way valve error is displayed; compressor is shutdown.
9.8.10. High-pressure Switch Disconnection Error Detection Control
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High-pressure switch disconnection is detected when high-pressure switch input continuously open for 1 minute while the
compressor shutdown.
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During this error, high-pressure switch error is displayed.
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