Panasonic CU-S9NKU-1, CS-S18NKU-1, CS-S12NKUW-1 14.4.16 F90 Power Factor Correction Protection

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14.4.16F90 (Power Factor Correction Protection)

Malfunction Decision Conditions

•During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at the outdoor unit main PCB senses abnormal high DC voltage level.

Malfunction Caused

•DC voltage peak due to power supply surge.

•DC voltage peak due to compressor windings not uniform.

•Faulty outdoor PCB.

Troubleshooting

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Contents CU-S12NKU-1 Indoor Unit Outdoor UnitCS-S18NKU-1 CU-S18NKU-1 CS-S22NKU-1 CU-S22NKU-1 Table of Contents Safety Precautions Items to be followed are classified by the symbolsPage Specification CU-S9NKU-1 CU-S12NKU-1 ARIDRY Bulb WET Bulb CS-S18NKU-1 CS-S22NKU-1 Piping Indoor Unit Outdoor Unit Remote Control Location of Controls and ComponentsIndoor Unit DimensionsCS-S9NKUW-1 CS-S12NKUW-1 CS-S18NKU-1 CS-S22NKU-1 CU-S9NKU-1 CU-S12NKU-1 CU-S18NKU-1 CU-S22NKU-1 Refrigeration Cycle Diagram CS-S18NKU-1 CU-S18NKU-1 CS-S22NKU-1 CU-S22NKU-1 Block Diagram CS-S18NKU-1 CU-S18NKU-1 CS-S22NKU-1 CU-S22NKU-1 Wiring Connection Diagram CS-S18NKU-1 CS-S22NKU-1 CU-S9NKU-1 CU-S12NKU-1 CU-S18NKU-1 CU-S22NKU-1 Electronic Circuit Diagram CS-S18NKU-1 CS-S22NKU-1 Outdoor Unit CU-S18NKU-1 CU-S22NKU-1 Printed Circuit Board Main Printed Circuit BoardPower Printed Circuit Board Indicator Printed Circuit Board CU-S9NKU-1 CU-S12NKU-1 CU-S18NKU-1 CU-S22NKU-1 Installation Instruction Indoor/Outdoor Unit Installation Diagram10.1 S9NKUW-1 S12NKUW-1 Select the Best LocationHow to Fix Installation Plate Indoor UnitThis can be used for left rear piping and bottom piping also Connect the Cable to the Indoor Unit Page Install the Outdoor Unit Outdoor UnitGas leak checking Piping Insulation 10.2 S18NKU-1 S22NKU-1 How to Fix Installation Plate This can be used for left rear piping and bottom piping also Connect the Cable to the Indoor Unit Page Model S18NKU-1 Evacuation of the equipment Piping Insulation Internal Setting Temperature Operation ControlBasic Function Cooling OperationIndoor Fan Motor Operation Outdoor Fan Motor Operation For S9NK and S12NKOutdoor Fan Motor Operation For S18NK and S22NK Airflow Direction11.5.1 Vertical Airflow Quiet Operation Cooling Mode/Cooling Area of Dry ModeHorizontal Airflow Powerful Mode Operation Timer ControlOn Timer Control OFF Timer ControlLED Power Timer Quiet Powerful Indication PanelRestart Control Time Delay Safety Control IPM Power Transistor Prevention ControlProtection Control 12.2 30 Seconds Forced OperationLow Frequency Protection Control Low Pressure Protection Control Gas Leakage Detection12.4.2 S18NK, S22NK Outdoor Air Temperature Control Cooling Overload ControlFreeze Prevention Control Dew Prevention ControlServicing Mode Auto Off/On ButtonRemote Control Button Reset RCReset AC TimerTroubleshooting Guide Refrigeration Cycle SystemCondition Cooling Mode Air conditioner To Display Memorized Error Code Protective Operation Breakdown Self Diagnosis FunctionSelf Diagnosis Function Three Digits Alphanumeric Code To Make a DiagnosisError Code Table Abnormality / Protection controlTroubleshooting Flowchart 14.4.1 H11 Indoor/Outdoor Abnormal Communication14.4.2 H12 Indoor/Outdoor Capacity Rank Mismatched 14.4.3 H14 Indoor Intake Air Temperature Sensor Abnormality 14.4.4 H15 Compressor Temperature Sensor Abnormality 14.4.5 H16 Outdoor Current Transformer Open Circuit 14.4.6 H19 Indoor Fan Motor DC Motor Mechanism Locked 14.4.7 H23 Indoor Pipe Temperature Sensor Abnormality 14.4.8 H27 Outdoor Air Temperature Sensor Abnormality 14.4.9 H28 Outdoor Pipe Temperature Sensor Abnormality Malfunction Decision Conditions 14.4.11 H33 Unspecified Voltage between Indoor and Outdoor 14.4.12 H97 Outdoor Fan Motor DC Motor Mechanism Locked 14.4.13 H98 Indoor High Pressure Protection Malfunction Decision Conditions 14.4.15 F11 Indoor Pipe Temperature Sensor Abnormality 14.4.16 F90 Power Factor Correction Protection 14.4.17 F91 Refrigeration Cycle Abnormality 14.4.18 F93 Compressor Rotation Failure 14.4.19 F95 Cooling High Pressure Abnormality 14.4.20 F96 IPM Overheating 14.4.21 F97 Compressor Overheating 14.4.22 F98 Input Over Current Detection 14.4.23 F99 Output Over Current Detection Disassembly and Assembly Instructions To remove front grilleTo remove discharge grille Page Page Operation Characteristics Technical DataCS-S9NKUW-1 CU-S9NKU-1 Page CS-S12NKUW-1 CU-S12NKU-1 Page CS-S18NKU-1 CU-S18NKU-1 Page CS-S22NKU-1 CU-S22NKU-1 Page Exploded View and Replacement Parts List CS-S12NKUW-1 Remark CS-S18NKU-1 CS-S22NKU-1 CS-S22NKU-1 Remark Outdoor Unit CU-S12NKU-1 Remark CU-S18NKU-1 CU-S22NKU-1 CU-S22NKU-1 Remark
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