Panasonic CU-S12NKU-1, CS-S18NKU-1, CS-S12NKUW-1 14.4.17 F91 Refrigeration Cycle Abnormality

Page 77

14.4.17F91 (Refrigeration Cycle Abnormality)

Malfunction Decision Conditions

During cooling, compressor frequency = Fcmax.

During cooling and heating operation, running current: 0.65A < I < 1.65A.

During cooling, indoor intake - indoor pipe < 39.2°F.

Malfunction Caused

Refrigerant shortage (refrigerant leakage)

Poor compression performance of compressor.

2/3 way valve closed.

Detection error due to faulty indoor intake air or indoor pipe temperature sensors.

Troubleshooting

77

Image 77
Contents CS-S18NKU-1 CU-S18NKU-1 CS-S22NKU-1 CU-S22NKU-1 Indoor Unit Outdoor UnitCU-S12NKU-1 Table of Contents Items to be followed are classified by the symbols Safety PrecautionsPage CU-S9NKU-1 CU-S12NKU-1 ARI SpecificationDRY Bulb WET Bulb CS-S18NKU-1 CS-S22NKU-1 Piping Location of Controls and Components Indoor Unit Outdoor Unit Remote ControlCS-S9NKUW-1 CS-S12NKUW-1 DimensionsIndoor Unit 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 Main Printed Circuit Board Printed Circuit BoardPower Printed Circuit Board Indicator Printed Circuit Board CU-S9NKU-1 CU-S12NKU-1 CU-S18NKU-1 CU-S22NKU-1 Indoor/Outdoor Unit Installation Diagram Installation Instruction10.1 S9NKUW-1 S12NKUW-1 Select the Best LocationIndoor Unit How to Fix Installation PlateThis can be used for left rear piping and bottom piping also Connect the Cable to the Indoor Unit Page Outdoor Unit Install the 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 Operation Control Internal Setting TemperatureBasic Function Cooling OperationOutdoor Fan Motor Operation For S9NK and S12NK Indoor Fan Motor OperationOutdoor Fan Motor Operation For S18NK and S22NK Airflow DirectionHorizontal Airflow Quiet Operation Cooling Mode/Cooling Area of Dry Mode11.5.1 Vertical Airflow Timer Control Powerful Mode OperationOn Timer Control OFF Timer ControlIndication Panel LED Power Timer Quiet PowerfulIPM Power Transistor Prevention Control Restart Control Time Delay Safety ControlProtection Control 12.2 30 Seconds Forced Operation12.4.2 S18NK, S22NK Low Pressure Protection Control Gas Leakage DetectionLow Frequency Protection Control Cooling Overload Control Outdoor Air Temperature ControlFreeze Prevention Control Dew Prevention ControlAuto Off/On Button Servicing ModeReset RC Remote Control ButtonReset AC TimerRefrigeration Cycle System Troubleshooting GuideCondition Cooling Mode Air conditioner Breakdown Self Diagnosis Function To Display Memorized Error Code Protective OperationSelf Diagnosis Function Three Digits Alphanumeric Code To Make a DiagnosisAbnormality / Protection control Error Code Table14.4.1 H11 Indoor/Outdoor Abnormal Communication Troubleshooting Flowchart14.4.2 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 To remove front grille Disassembly and Assembly InstructionsTo remove discharge grille Page Page CS-S9NKUW-1 CU-S9NKU-1 Technical DataOperation Characteristics 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
Related manuals
Manual 103 pages 20.36 Kb