Panasonic CU-S12NKU-1 - Manuals

13 5. Refrigeration Cycle Diagram 5.1 CS-S9NKUW-1 CU-S9NKU-1 CS-S12NKUW-1 CU-S12NKU-1

17 7. Wiring Connection Diagram 7.1 Indoor Unit 7.1.1 CS-S9NKUW-1 CS-S12NKUW-1

22 8. Electronic Circuit Diagram 8.1 Indoor Unit 8.1.1 CS-S9NKUW-1 CS-S12NKUW-1

27 9. Printed Circuit Board 9.1 Indoor Unit 9.1.1 Main Printed Circuit Board

31 10. Installation Instruction 10.1 S9NKUW-1 S12NKUW-1 10.1.1 Select the Best Location 10.1.1.1 Indoor Unit • Do not install the unit in excessive oil fume area such as kitchen, workshop and etc. • There should not be any heat source or steam near the unit. • There should not be any obstacles block...

32 10.1.3 Indoor Unit 10.1.3.1 How to Fix Installation Plate The mounting wall shall be strong and solid enough to prevent if from the vibration. The centre of installation plate should be at more than c at right and left of the wall. The distance from installation plate edge to ceiling should more ...

34 10.1.3.7 Connect the Cable to the Indoor Unit 1. The inside and outside connecting cable can be connected without removing the front grille. 2. Unscrew the conduit cover and fix the conduit connector to conduit cover with lock nut, then secure it against chassis. 3. Connecting wire between indoor...

35 10.1.3.8 Wire Stripping and connecting requirement 10.1.3.9 Cutting and flaring the piping 1 Please cut using pipe cutter and then remove the burrs. 2 Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering ...

36 10.1.4 Outdoor Unit 10.1.4.1 Install the Outdoor Unit • After selecting the best location, start installation to Indoor/Outdoor Unit Installation Diagram. 1 Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø13/32”). 2 When installing at roof, please consider strong win...

38 9. Secure the wire onto the control board with the holder (clamper). 10. After completing wiring connections, reattach the control board cover (Metal and Resin) and the top panel to the original position with the screws. 11. For wire stripping and connection requirement, refer to instruction g of...

44 10.2.4 Outdoor Unit 10.2.4.1 Install the Outdoor Unit • After selecting the best location, start installation to Indoor/Outdoor Unit Installation Diagram. 1 Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø13/32”). 2 When installing at roof, please consider strong win...

45 10.2.4.3 Evacuation of the equipment When installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following procedures. 1. Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve. 2. Connect the m...

46 9. Secure the wire onto the control board with the holder (clamper). 10. After completing wiring connections, reattach the particular plate and control board cover (metal and resin) to the original position with the screws. 11. For wire stripping and connection requirement, refer to instruction g...

47 11. Operation Control 11.1 Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operation mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operation mode, the microcomputer maintai...

48 11.2 Indoor Fan Motor Operation 11.2.1 Basic Rotation Speed • Manual Fan Speed o Fan motor’s number of rotation is determined according to remote control setting. Remote control ○ ○ ○ ○ ○ Tab Hi Me+ Me Me- Lo • Auto Fan Speed o According to room temperature and setting temperature, indoor fan spe...

50 ƒ When quiet operation is stopped, operation is shifted to normal operation with previous setting. ƒ When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed. ƒ When operation mode is changed, quiet operation is shifted to quiet operation of the new mode. ƒ Du...

51 11.10 Indication Panel LED POWER TIMER QUIET POWERFUL Color Green Orange Orange Orange Light ON Operation ON Timer Setting ON Quiet Mode ON Powerful Mode ON Light OFF Operation OFF Timer Setting OFF Quiet Mode OFF Powerful Mode OFF Note: • If POWER LED blinks, the possible operation of the unit i...

52 12. Protection Control 12.1 Restart Control (Time Delay Safety Control) • The compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this period. • This control is not applicable if the ...

55 13. Servicing Mode 13.1 Auto Off/On Button Auto OFF/ON Button Pressed Auto OFF/ON Button Pressed 5 sec Auto Operation Test Run Operation (Forced Cooling Operation) Stop 1 AUTO OPERATION MODE The Auto Operation will be activated immediately once the Auto OFF/ON button is pressed. This operation ca...

56 13.2 Remote Control Button 13.2.1 SET Button • To check remote control transmission code and store the transmission code to EEPROM o Press “Set” button continuously for 10 seconds by using pointer o Press “Timer Set” button unit a “beep” sound is heard as confirmation of transmission code change....

57 14. Troubleshooting Guide 14.1 Refrigeration Cycle System In order to diagnose malfunctions, ensure the air conditioner is free from electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compre...

58 14.1.1 Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Condition of the air conditioner Low Pressure High Pressure Electric current during operation Insufficient refrigerant (gas leakage) Ô Ô Ô Clogged capillary tube or strainer Ô Ô Ô Short...

59 14.2 Breakdown Self Diagnosis Function 14.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code) • Once error occurred during operation, the unit will stop its operation, and Timer LED blinks. • Although Timer LED goes off when power supply is turned off, if the unit is operated under a bre...

60 14.3 Error Code Table Diagnosis display Abnormality / Protection control Abnormality Judgment Emergency Operation Primary location to verify H00 No abnormality detected - Normal operation H11 Indoor / Outdoor abnormal communication > 1 min after starting operation Indoor fan operation only • I...

61 14.4 Troubleshooting Flowchart 14.4.1 H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions • During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction Caused • Fau...

62 14.4.2 H12 (Indoor/Outdoor Capacity Rank Mismatched) Malfunction Decision Conditions • During startup, error code appears when different types of indoor and outdoor units are interconnected. Malfunction Caused • Wrong models interconnected. • Wrong indoor unit or outdoor unit PCBs mounted. • Indo...

63 14.4.3 H14 (Indoor Intake Air Temperature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors. Malfunction Caused • Faulty connector con...

64 14.4.4 H15 (Compressor Temperature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors. Malfunction Caused • Faulty connector connectio...

65 14.4.5 H16 (Outdoor Current Transformer Open Circuit) Malfunction Decision Conditions • A current transformer (CT) is detected by checking the compressor running frequency ( ≥ rated frequency) and CT detected input current (less than 1.14A) for continuously 20 seconds. Malfunction Caused • CT def...

66 14.4.6 H19 (Indoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions • The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550rpm or < 50rpm) Malfunction Caused • Operation stops due to s...

67 14.4.7 H23 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused • Faulty connector conne...

68 14.4.8 H27 (Outdoor Air Temperature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction Caused • Faulty connector connection. • F...

69 14.4.9 H28 (Outdoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction Caused • Faulty connector connection. •...

72 14.4.12 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions • The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor. Malfunction Caused • Operation stops due to short circuit inside the fan motor winding. • Op...

74 14.4.14 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Malfunction Decision Conditions • Freeze prevention control takes place (when indoor pipe temperature is lower than 35.6°F) Malfunction Caused • Clogged air filter of the indoor unit • Dust accumulation on the indoor unit heat...

75 14.4.15 F11 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions • When cooling operation, when indoor pipe temperature or indoor heat exchanger temperature sensor is above 113°F. Malfunction Caused • Faulty connector connection. • Faulty indoor pipe temperature sensor. • ...

76 14.4.16 F90 (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 ...

77 14.4.17 F91 (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 • Refrigera...

78 14.4.18 F93 (Compressor Rotation Failure) Malfunction Decision Conditions A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Caused • Compressor terminal disconnect • Outdoor PCB malfunction Troubleshooting

79 14.4.19 F95 (Cooling High Pressure Abnormality) Malfunction Decision Conditions During operation of cooling, when outdoor unit heat exchanger high temperature data (141.8°F) is detected by the outdoor pipe temperature sensor. Malfunction Caused • Outdoor pipe temperature rise due to short circuit...

80 14.4.20 F96 (IPM Overheating) Malfunction Decision Conditions During operating of cooling and heating, when IPM temperature data (212°F) is detected by the IPM temperature sensor. Malfunction Caused • IPM overheats due to short circuit of hot discharge air flow. • IPM overheats due to defective o...

82 14.4.22 F98 (Input Over Current Detection) Malfunction Decision Conditions During cooling and heating operation, when an input over-current (16.8A) is detected by checking the input current value being detected by current transformer (CT) with the compressor running. Malfunction Caused • Over-cur...

83 14.4.23 F99 (Output Over Current Detection) Malfunction Decision Conditions During operation of cooling and heating, when an output over-current (18.5A) is detected by checking the current that flows in the inverter DC peak sensing circuitry. Malfunction Caused • DC peak due to compressor failure...

84 WARNING 15. Disassembly and Assembly Instructions High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 15.1 Indoor Electronic C...

88 16. Technical Data 16.1 Operation Characteristics 16.1.1 CS-S9NKUW-1 CU-S9NKU-1 • Cooling Characteristic o Room temperature: 81°F (DBT), 66°F (WBT) o Operation condition: High fan speed o Piping length: 24.6ft o Compressor Freq: Fc

96 17. Exploded View and Replacement Parts List 17.1 Indoor Unit 17.1.1 CS-S9NKUW-1 CS-S12NKUW-1 Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.

97 REF. NO. PART NAME & DESCRIPTION QTY. CS-S9NKUW-1 CS-S12NKUW-1 REMARK 1 CHASSIS COMPLETE 1 CWD50C1633 ← 2 FAN MOTOR 1 L6CBYYYL0055 ← O 3 CROSS-FLOW FAN COMPLETE 1 CWH02C1076 ← 4 BEARING ASSY 1 CWH64K007 ← 5 SCREW - CROSS-FLOW FAN 1 CWH551146 ← 7 EVAPORATOR 1 CWB30C3181 CWB30C3182 8 FLARE NUT ...

103 REF. NO. PART NAME & DESCRIPTION QTY. CU-S18NKU-1 CU-S22NKU-1 REMARK 1 CHASSIS ASSY 1 CWD52K1227A ← 2 ANTI - VIBRATION BUSHING 3 CWH50077 ← 3 COMPRESSOR 1 5CS130XAD04 ← O 4 NUT - COMPRESSOR MOUNT 3 CWH56000J ← 5 FAN MOTOR BRACKET 1 CWD541126 ← 6 FAN MOTOR 1 CWA951686 ← O 7 SCREW - FAN MOTOR ...