Panasonic S18NKUA Manuel de service

© Panasonic Appliances Air-Conditioning Malaysia Sdn. Bhd. 2012. Unauthorized copying and distribution is a violation of law. Order No: PAPAMY1204086

10 5. Refrigeration Cycle Diagram

11 6. Block Diagram

12 7. Wiring Connection Diagram 7.1 Indoor Unit

13 7.2 Outdoor Unit

14 8. Electronic Circuit Diagram 8.1 Indoor Unit

15 8.2 Outdoor Unit

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

17 9.1.2 Power Printed Circuit Board 9.1.3 Indicator Printed Circuit Board

18 9.2 Outdoor Unit 9.2.1 Main Printed Circuit Board

19 10. Installation Instruction • IMPORTANT (only for S18NKUA) This product has been designed and manufactured to meet ENERGY STAR® criteria for ener

2 12.4 IPM (Power Transistor) Prevention Control ... ...32 12.5 Compressor Overheat

20 10.1.3 Indoor Unit 10.1.3.1 How to Fix Installation Plate The mounting wall must be strong and solid enough to prevent if from the vibration.

21 10.1.3.3 Indoor Unit Installation 10.1.3.4 For the right rear piping 10.1.3.5 For the right bottom piping 10.1.3.6 For the embedded piping

22 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

23 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

24 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

25 10.1.4.3 Evacuation of the equipment WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the follo

26 9. Secure the wire onto the control board with the holder (clamper). 10. After completing wiring connections, reattach the particular plate and

27 11. Operation Control 11.1 Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operation mode as

28 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 remot

29 11.4.1 Vertical Airflow Vane Angle (°) Operation Mode Airflow Direction 1 2 3 4 5 Auto 20 ~ 45 Cooling Manual 20 26 32 37 45 Auto 20 ~ 45 Soft

3 1. Safety Precautions • Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing. • Electrical work must be installed or ser

30  During quiet operation, if ON timer activates, quiet operation maintains.  After off, when on back, quiet operation is not memorized. • Contr

31 11.9 Indication Panel LED POWER TIMER QUIET POWERFUL Color Green Orange Orange Orange Light ON Operation ON Timer Setting ON Quiet Mode

32 12. Protection Control 12.1 Restart Control (Time Delay Safety Control) • The compressor will not turn on within 3 minutes from the moment oper

33 12.5 Compressor Overheating Prevention Control • Instructed frequency for compressor operation will be regulated by compressor discharge tempe

34 12.10 Cooling Overload Control • Pipe temperature limitation / restriction. o Detects the outdoor pipe temperature and carry out restriction /

35 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 (

36 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”

37 14. Troubleshooting Guide 14.1 Refrigeration Cycle System In order to diagnose malfunctions, ensure the air conditioner is free from electrical pr

38 14.1.1 Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Condition of the air conditioner

39 14.2 Breakdown Self Diagnosis Function 14.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code) • Once error occurred during operation, t

4 WARNING 19. During installation, install the refrigerant piping properly before run the compressor. (Operation of compressor without fixing refrig

40 14.3 Error Code Table Diagnosis display Abnormality / Protection control Abnormality JudgmentEmergency Operation Primary location to verify H00

41 14.4 Troubleshooting Flowchart 14.4.1 H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions • During startup and operation

42 14.4.2 H14 (Indoor Intake Air Temperature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and heati

43 14.4.3 H16 (Outdoor Current Transformer Open Circuit) Malfunction Decision Conditions • A current transformer (CT) is detected by checking the co

44 14.4.4 H19 (Indoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions • The rotation speed detected by the Hall IC during fan

45 14.4.5 H23 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and heating, th

46 14.4.6 H27 (Outdoor Air Temperature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and heating, th

47 14.4.7 H28 (Outdoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and heating,

48 14.4.8 H30 (Compressor Discharge Temperature Sensor Abnormality) Malfunction Decision Conditions • During startup and operation of cooling and he

49 14.4.9 H33 (Unspecified Voltage between Indoor and Outdoor) Malfunction Decision Conditions • The supply power is detected for its requirement

5 2. Specification Indoor CS-S18NKUA CS-S24NKUA Model Outdoor CU-S18NKUA CU-S24NKUA Performance Test Condition AHRI AHRI Phase, Hz Single, 60 Si

50 14.4.10 H98 (Indoor High Pressure Protection) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Condit

51 14.4.11 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Malfunction Decision Conditions • Freeze prevention control takes place

52 14.4.12 F11 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions • When cooling operation, when indoor pipe temperature

53 14.4.13 F90 (Power Factor Correction Protection) Malfunction Decision Conditions • During startup and operation of cooling and heating, when Po

54 14.4.14 F91 (Refrigeration Cycle Abnormality) Malfunction Decision Conditions • During cooling, compressor frequency = Fcmax. • During cooling

55 14.4.15 F93 (Compressor Rotation Failure) Malfunction Decision Conditions A compressor rotation failure is detected by checking the compressor r

56 14.4.16 F95 (Cooling High Pressure Abnormality) Malfunction Decision Conditions During operation of cooling, when outdoor unit heat exchanger hi

57 14.4.17 F96 (IPM Overheating) Malfunction Decision Conditions During operating of cooling and heating, when IPM temperature data (212°F) is dete

58 14.4.18 F97 (Compressor Overheating) Malfunction Decision Conditions During operation of cooling and heating, when compressor tank temperature d

59 14.4.19 F98 (Input Over Current Detection) Malfunction Decision Conditions During cooling and heating operation, when an input over-current (16.

6 Indoor CS-S18NKUA CS-S24NKUA Model Outdoor CU-S18NKUA CU-S24NKUA Control Device Expansion Valve Expansion Valve Refrigerant Oil cm3 FV50S (8

60 14.4.20 F99 (Output Over Current Detection) Malfunction Decision Conditions During operation of cooling and heating, when an output over-current

61 WARNING 15. Disassembly and Assembly Instructions High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capa

62 15.1.1.2 To remove discharge grille

63 15.1.1.3 To remove control board 15.1.1.4 To remove cross flow fan and indoor fan motor

64

65 16. Technical Data 16.1 Operation Characteristics 16.1.1 CS-S18NKUA CU-S18NKUA • Cooling Characteristic o Room temperature: 81°F (DBT), 66°F (WBT

66 • Piping Length Characteristic o Room temperature: 81°F (DBT), 66°F (WBT) o Operation condition: High fan speed o Outdoor temperature: 95°F

67 16.1.2 CS-S24NKUA CU-S24NKUA • Cooling Characteristic o Room temperature: 81°F (DBT), 66°F (WBT) o Operation condition: High fan speed o Piping

68 • Piping Length Characteristic o Room temperature: 81°F (DBT), 66°F (WBT) o Operation condition: High fan speed o Outdoor temperature: 95°F

69 17. Exploded View and Replacement Parts List 17.1 Indoor Unit Note The above exploded view is for the purpose of parts disassembly and replacemen

7 3. Location of Controls and Components 3.1 Indoor Unit 3.2 Outdoor Unit 3.3 Remote Control

70 REF. NO. PART NAME & DESCRIPTION QTY. CS-S18NKUA CS-S24NKUA REMARK 1 CHASSIS COMPLETE 1 CWD50C1637 ← 2 FAN MOTOR 1 ARW7663AC ← O 3

71 17.2 Outdoor Unit Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as s

72 REF. NO. PART NAME & DESCRIPTION QTY. CU-S18NKUA CU-S24NKUA REMARK 1 CHASSIS COMPLETE 1 CWD52K1229A ← 2 ANTI - VIBRATION BUSHING 3

8 4. Dimensions 4.1 Indoor Unit

9 4.2 Outdoor Unit