Panasonic CS-A24BB4N Service Manual
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Panasonic CS-A24BB4N Service Manual

Panasonic CS-A24BB4N Service Manual

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2001 Matsushita Air-Conditioning Corp. Sdn. Bhd. (183914D).
All rights reserved. Unauthorized copying and distribution is a
violation of law.
ORDER NO. MAC0112091C3
Indoor Model / Outdoor Model
CS-A24BB4N / CU-C24BBN5
CS-A24BB4N / CU-C24BBN6
CS-A28BB4N / CU-C28BBN5
CS-A28BB4N / CU-C28BBN6
CS-A28BB4N / CU-C28BBN8
CS-A34BB4N / CU-C34BBN7
CS-A34BB4N / CU-C34BBN8
CS-A43BB4N / CU-C43BBN7
CS-A43BB4N / CU-C43BBN8
CS-A50BB4N / CU-C50BBN7
CS-A50BB4N / CU-C50BBN8
1
AIR CONDITIONER
CASSETTE TYPE

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Summary of Contents for Panasonic CS-A24BB4N

  • Page 1 ORDER NO. MAC0112091C3 AIR CONDITIONER CASSETTE TYPE Indoor Model / Outdoor Model CS-A24BB4N / CU-C24BBN5 CS-A24BB4N / CU-C24BBN6 CS-A28BB4N / CU-C28BBN5 CS-A28BB4N / CU-C28BBN6 CS-A28BB4N / CU-C28BBN8 CS-A34BB4N / CU-C34BBN7 CS-A34BB4N / CU-C34BBN8 CS-A43BB4N / CU-C43BBN7 CS-A43BB4N / CU-C43BBN8 CS-A50BB4N / CU-C50BBN7 CS-A50BB4N / CU-C50BBN8 2001 Matsushita Air-Conditioning Corp.

  • Page 2: Service Information

    1. SERVICE INFORMATION Notice of Address setting for NEW Cassette / NEW Outdoor Unit. The new Cassette / new Outdoor models are possible to have address setting for twin / triple control or group control automatically when main power supply is switched on. (Manual address setting is also possible by using DSW1 switch on the indoor unit P.C.
  • Page 3 connecting system. / Consequently, when initial power supply is ‘on’, there mustn’t be any interchanging of units even of the same type and same capacity unit. / Therefore, connection of the unit to another system is prohibited. 2. FEATURES 2.1. Variety of excellent features - Compact design / Compact design 240 mm height, 840 mm width and 840 mm depth.
  • Page 4 2.2.1. Product features - Low-noise design improves comfort in surrounding areas 1. The noise-suppressing winglet fan is a result of new research into vane design theory. The unique curved shape suppresses the generation of vortexes, thus reducing air flow noise. 2.
  • Page 5 - Pipes that are one size larger can also be connected for renewal. - If renewing the system, existing refrigerant pipes can be utilized so that only the indoor and outdoor units need to be replaced. - For example, liquid and gas pipes from 10 years ago can be connected to current pipes with the same size or one size larger.
  • Page 6 - Save space design allows units to be installed side-by-side continuously - Servicing after installation can be carried out by removing the front covers. - Long pipe design for refrigerant pipes - Maximum piping length of 50m for all models. - Internal pipe connection - Pipes are connected inside the units (inside the side covers), making the final appearance more attractive.
  • Page 7 2.4. A brand-new control method using the latest in technology - Easier power supply wiring connection / Power supply wiring and other wiring tasks can be carried out more easily. - Twin non-polar wires used to connect indoor and outdoor units. - Adoption of connection error prevention circuits for drive wires and signal wires.
  • Page 8 2.5. Wired Remote Control - The new design includes an easily-visible red pilot lamp. The power can be turned on and off at a single touch, without opening the cover. - Has a built-in thermistor, allowing indoor temperature detection in accordance with indoor conditions by switching with main unit thermistor.
  • Page 9 - New design with compact size. (Operation range within approximately 8 m.) - Built-in timer with ON/OFF timer setting (within 24 hours) Wired Wireless Cooling CZ-RD51N CZ-RL01N NOTE: Both of the above remote control is packed separately from the indoor unit. 2.7.

  • Page 10: Specification (Cooling Only Type )

    3. SPECIFICATION (COOLING ONLY TYPE ) 3.1. CS-A24BB4N / CU-C24BBN5 Indoor Unit Outdoor unit Main Body CS-A24BB4N CU-C24BBN5 ITEM / MODEL Panel CZ-BT01N Remote CZ-RD51N (Wired) Control CZ-RL01N (Wireless) Cooling Capacity BTU/h 21,500 Refrigerant Charge-less Standard Air Volume for High,...
  • Page 11 2.45 2.45 2.45 Running Current Cool 11.3 10.9 10.5 Starting Current Power Factor Cool *Power Factor means total figure of compressor, indoor fan motor and outdoor fan motor. National Power source AC, 1~220V, 230V, 240V 50Hz 3.2. CS-A24BB4N / CU-C24BBN6...
  • Page 12 Indoor Unit Outdoor unit Main Body CS-A24BB4N CU-C24BBN6 ITEM / MODEL Panel CZ-BT01N Remote CZ-RD51N (Wired) Control CZ-RL01N (Wireless) Cooling Capacity BTU/h 23,200 Refrigerant Charge-less Standard Air Volume for High, m3/min Hi 17 Me 15 Lo 14 Hi 43 Medium and Low Speed...
  • Page 13 ELECTRICAL DATA (60Hz) CS-A24BB4N, CU-C24BBN6 ITEM / MODEL Condition by JIS B 8615 Volts Phase Single Power Consumption Cool 3.05 Running Current Cool 14.0 Starting Current Power Factor Cool *Power Factor means total figure of compressor, indoor fan motor and outdoor fan motor.
  • Page 14 Refrigerant Control Capillary tube Refrigerant Oil (Charged) litre MS32 (1.3) Refrigerant (Charged) Running Control Switch Wireless or Wired Remote Adjustment Control Room Temperature Thermostat Safety Devices Internal protector for compressor, Internal thermostat for fan motor, Crankcase heater, High pressure Current transformer Noise Level Hi 40 Me 38...
  • Page 15 Indoor Unit Outdoor unit Main Body CS-A28BB4N CU-C28BBN6 ITEM / MODEL Panel CZ-BT01N Remote CZ-RD51N (Wired) Control CZ-RL01N (Wireless) Cooling Capacity 7.60 BTU/h 25,900 Refrigerant Charge-less Standard Air Volume for High, m3/min Hi 20 Me 18 Lo 16 Hi 43 Medium and Low Speed 1519 Outside Dimension (H x W x D)
  • Page 16 ELECTRICAL DATA (60Hz) CS-A28BB4N, CU-C28BBN6 ITEM / MODEL Condition by JIS B 8615 Volts Phase Single Power Consumption Cool 3.20 Running Current Cool 15.3 Starting Current Power Factor Cool *Power Factor means total figure of compressor, indoor fan motor and outdoor fan motor. National Power source AC, 1~220V, 60Hz...
  • Page 17 Refrigerant Control Capillary tube Refrigerant Oil (Charged) litre MS32 (1.3) Refrigerant (Charged) Running Control Switch Wireless or Wired Remote Adjustment Control Room Temperature Thermostat Safety Devices Head thermostat for compressor, Internal thermostat for fan motor, Crankcase heater, High pressure Current transformer Noise Level Hi 40 Me 38...
  • Page 18 Indoor Unit Outdoor unit Main Body CS-A34BB4N CU-C34BBN7 ITEM / MODEL Panel CZ-BT01N Remote CZ-RD51N (Wired) Control CZ-RL01N (Wireless) Cooling Capacity 10.8 BTU/h 36,900 Refrigerant Charge-less Standard Air Volume for High, m3/min Hi 26 Me 23 Lo 20 Hi 70 Medium and Low Speed 2472 Outside Dimension (H x W x D)
  • Page 19 ELECTRICAL DATA (60Hz) CS-A34BB4N, CU-C34BBN7 ITEM / MODEL Condition by JIS B 8615 Volts Phase Power Consumption Cool 4.10 Running Current Cool 12.0 Starting Current Power Factor Cool *Power Factor means total figure of compressor, indoor fan motor and outdoor fan motor. National Power source AC, 3~220V, 60Hz...
  • Page 20 Refrigerant Control Capillary tube Refrigerant Oil (Charged) litre SONTEX200LT Refrigerant (Charged) Running Control Switch Wireless or Wired Remote Adjustment Control Room Temperature Thermostat Safety Devices Internal protector for compressor, Internal thermostat fan motor, Crankcase heater, High pressure switch, Current transformer Noise Level Hi 43 Me 41...
  • Page 21 Indoor Unit Outdoor unit Main Body CS-A43BB4N CU-C43BBN7 ITEM / MODEL Panel CZ-BT01N Remote CZ-RD51N (Wired) Control CZ-RL01N (Wireless) Cooling Capacity 13.5 BTU/h 46,100 Refrigerant Charge-less Standard Air Volume for High, m3/min Hi 30 Me 27 Lo 24 Hi 82 Medium and Low Speed 1059 2896...
  • Page 22 ELECTRICAL DATA (60Hz) CS-A43BB4N, CU-C43BBN7 ITEM / MODEL Condition by JIS B 8615 Volts Phase Power Consumption Cool Running Current Cool 15.0 Starting Current Power Factor Cool *Power Factor means total figure of compressor, indoor fan motor and outdoor fan motor. National Power source AC, 3~220V, 60Hz...
  • Page 23 Refrigerant Control Capillary tube Refrigerant Oil (Charged) litre SONTEX200LT( Refrigerant (Charged) 10.1 Running Control Switch Wireless or Wired Remote Adjustment Control Room Temperature Thermostat Safety Devices Internal protector for compressor, Internal thermostat fan motor, Crankcase heater, High pressure switch, Current transformer Noise Level Hi 48 Me 46...
  • Page 24 Indoor Unit Outdoor unit Main Body CS-A50BB4N CU-C50BBN7 ITEM / MODEL Panel CZ-BT01N Remote CZ-RD51N (Wired) Control CZ-RL01N (Wireless) Cooling Capacity 15.1 BTU/h 51,500 Refrigerant Charge-less Standard Air Volume for High, m3/min Hi 30 Me 27 Lo 24 Hi 86 Medium and Low Speed 1059 3037...
  • Page 25 ELECTRICAL DATA (60Hz) ITEM / MODEL CS-A50BB4N, CU-C50BBN7 Condition by JIS B 8615 Volts Phase Power Consumption Cool Running Current Cool 17.7 Starting Current Power Factor Cool *Power Factor means total figure of compressor, indoor fan motor and outdoor fan motor. National Power source AC, 3~220V, 60Hz...

  • Page 26: Technical Drawing

    Air-heat Exchanger Slit-fin type Louvre-fin type Refrigerant Control Capillary tube Refrigerant Oil (Charged) litre SONTEX200LT Refrigerant (Charged) Running Control Switch Wireless or Wired Remote Adjustment Control Room Temperature Thermostat Safety Devices Internal protector for compressor, Internal thermostat fan motor, Crankcase heater, High pressure switch, Current transformer Noise Level Hi 49...

  • Page 32: Circuit Diagram

    5. CIRCUIT DIAGRAM...
  • Page 43 6. OPERATING INSTRUCTION 6.1. Wired Remote Control (OPTIONAL PARTS)
  • Page 44 NOTES: - Ensure that the correct button is pressed as simultaneous pressing of the multiple buttons will not make the setting correct. - The illustration above is for explanatory purposes only. The appearance will be different during actual operation. - Do not operate the remote control with wet hands. Otherwise, electric shock or malfunction may occur.
  • Page 45 NOTES: - Ensure that the correct button is pressed as simultaneous pressing of the multiple buttons will not make the setting correct. - The illustration above is for explanatory purpose only. The appearance will be different during actual operation. - If using the wireless remote control in conjunction with the wired remote control, the settings made from the wireless remote control will appear on the wired remote control display (except when making timer settings).

  • Page 46: Refrigeration Cycle

    7. REFRIGERATION CYCLE CS-A24BB4N/CU-C24BBN5, CS-A24BB4N/CU-C24BBN6, CS-A28BB4N/CU-C28BBN5, CS- A28BB4N/CU-C28BBN6, CS-A28BB4N/CU-C28BBN8, CS-A34BB4N/CU-C34BBN7, CS-A34BB4N/CU-C34BBN8, CS- A43BB4N/CU-C43BBN7, CS-A43BB4N/CU-C43BBN8, CS-A50BB4N/CU-C50BBN7, CS-A50BB4N/CU-C50BBN8 8. OPERATION RANGE Power Supply The applicable voltage range for each unit is given in the following table. The working voltage among the three phases must be balanced within a 3% deviation from each voltage at the compressor terminals.

  • Page 47: Pipe Length

    Indoor Temp. (D.B./W.B.) (°C) Outdoor Temp. (D.B./W.B.) Operating Cooling 32/23 21/15 52/- - Cooling only type / Model 50Hz CU-C24BBN5, CU-C28BBN5, CU- C28BBN8, CU-C34BBN8, CU-C43BBN8, CU-C50BBN8 / Model 60Hz CU-C24BBN6, CU-C28BBN6, CU-C34BBN7, CU-C43BBN7, CU- C50BBN7 Indoor Temp. (D.B./W.B.) (°C) Outdoor Temp. (D.B./W.B.) Operating Cooling 50/60...
  • Page 48 Outer diameter of gas side pipe mm (inch) 12.7 (1/2) 0.20 15.88 (5/8) 0.25 19.05 (3/4) 0.35 REFRIGERANT ADDITIONAL CHARGE 1. Piping installation by standard piping - At the time of shipment from the factory, this unit is charged with enough refrigerant for an equivalent pipe length of 30m or 20m.
  • Page 49 Model Standard piping specification Name Liquid Additional piping piping charge- (dia.mm) (dia.mm) less volume (g/ length 6.35 15.88 C24BBN5 9.52 15.88 C28BBN5 9.52 15.88 C28BBN8 9.52 19.05 C34BBN8 9.52 19.05 C43BBN8 9.52 19.05 C50BBN8 6.35 15.88 C24BBN6 9.52 15.88 C28BBN6 9.52 19.05 C34BBN7...

  • Page 50: Operating Characteristics

    Model Existing piping specification (Larger Name piping) Liquid Addition piping piping charge- (dia.mm) (dia.mm) less volume (g/ length 9.52 15.88 C24BBN5 12.7 15.88 C28BBN5 12.7 19.05 C28BBN8 12.7 19.05 C34BBN8 12.7 19.05 C43BBN8 12.7 19.05 C50BBN8 9.52 15.88 C24BBN6 12.7 19.05 C28BBN6 12.7...
  • Page 51 Model Main Power Source Compressor Motor Indoor Unit Outdoor Fan Motor Voltage Frequency S.C. R.C. R.C. R.C. (Hz) (kW) (kW) CS-A24BB4N 10.4 2.26 0.40 0.08 0.50 CU-C24BBN5 10.0 2.26 0.40 0.08 0.50 2.26 0.40 0.08 0.50 CS-A24BB4N CU-C24BBN6 13.05 2.86 0.40...

  • Page 52: Fan Performance

    11. FAN PERFORMANCE CS-A24BB4N Indoor Unit Outdoor Unit MODEL / ITEM CS-A24BB4N CU-C24BBN5, CU-C24BBN6 MODE Air Volume Running 0.38 0.31 0.27 0.50 Current Power 0.08 0.07 0.06 0.11 Consumption Fan Speed r/min 425 385 335 CS-A28BB4N Indoor Unit Outdoor Unit...
  • Page 53 CS-A34BB4N Indoor Unit Outdoor Unit MODEL / ITEM CS-A34B4N CU-C34BBN7, CU-C34BBN8 MODE Air Volume Running 0.70 0.60 0.50 1.00 Current Power 0.15 0.12 0.10 0.22 Consumption Fan Speed r/min 565 500 425 CS-A43BB4N...
  • Page 54 Indoor Unit Outdoor Unit MODEL / ITEM CS-A43B4N CU-C43BBN7, CU-C43BBN8 MODE Air Volume Running 0.90 0.80 0.70 1.10 Current Power 0.20 0.17 0.14 0.23 Consumption Fan Speed r/min 725 655 575 CS-A50BB4N Indoor Unit Outdoor Unit MODEL / ITEM CS-A50B4N CU-C50BBN7, CU-C50BBN8 MODE...

  • Page 55: Safety Device

    12. SAFETY DEVICE INDOOR UNIT Heat pump model Indoor unit CS-A24BB4N CS-A28BB4N CS-A34BB4N CS-A43BB4N CS- Cooling only model For Fan Motor °C Protection, Internal Protector °C (49F) For Control 3.15 3.15 3.15 3.15 Protection, Fuse OUTDOOR UNIT Cooling 50Hz only...

  • Page 56: Component Specification

    Compressor °C Protection, 120* Internal Protector 50Hz °C 60Hz °C 50Hz °C 60Hz Trip time 50Hz 5-15sec/ 5-15sec/ 10sec/40A 10sec/40A 10sec 60Hz 3-9sec/ 3-9sec/ 10sec/85A 10sec/85A For Fan Motor °C Protection, Internal °C Protector (49F) Cooling Control, Control Th>30 degree celcius ----- High speed Heat Exchanger method Th <...
  • Page 57 Direct on-line Starting Motor Rated Output Type Poles Insulation Class Type MS32 MS32 Sontex200LT Sontex200LT Sontex200LT Sontex200L Charge Evaporator Models CS-A24BB4N CS-A28BB4N CS-A34BB4N CS-A43BB4N A50BB4N Tube Material Copper tube Outer Diameter Thickness 0.27 0.27 0.27 0.27 No. of Tubes/Row Fin Material...

  • Page 58: Capacity And Power Consumption

    Starting Method Direct on-line Motor Starting Rated Output 0.03 0.03 0.05 0.095 Poles Phase Single-Phase Single-Phase Single-Phase Single-Phase Single Insulation Class Condenser CU-C34BBN8 Cooling only C24BBN5 C28BBN5 C43BBN8 C50BBN8 Models model CU-C34BBN7 C28BBN8 C43BBN7 C50BBN7 Tube Material Copper tube Outer Diameter 9.52 9.52 9.52...
  • Page 59 Model Cooling capacities are based on conditions below. A24BB4N 1 phase, 50Hz, 230V / Indoor Cooling temperature 27°C D.B. 19°C W.B. / capacity 6.3 Outdoor temperature 35°C D.B. / Standard air volume 17m /min Entering Temperature Air Entering Condenser (°C D.B.) Temperature D.B.
  • Page 60 Model Cooling capacities are based on conditions below. A28BB4N 1 phase, 50Hz, 230V / Indoor Cooling temperature 27°C D.B. 19°C W.B. / capacity 7.1 Outdoor temperature 35°C D.B. / Standard air volume 18m /min Entering Temperature Air Entering Condenser (°C D.B.) Temperature D.B.
  • Page 61 Model Cooling capacities are based on conditions below. A34BB4N 1 phase, 50Hz, 230V / Indoor Cooling temperature 27°C D.B. 19°C W.B. / capacity Outdoor temperature 35°C D.B. / 10.0 kW Standard air volume 27m /min Entering Temperature Air Entering Condenser (°C D.B.) Temperature D.B.
  • Page 62 Model Cooling capacities are based on conditions below. A34BB4N 3 phase, 50Hz, 400V / Indoor Cooling temperature 27°C D.B. 19°C W.B. / capacity Outdoor temperature 35°C D.B. / 10.0 kW Standard air volume 27m /min Entering Temperature Air Entering Condenser (°C D.B.) Temperature D.B.
  • Page 63 Model Cooling capacities are based on conditions below. A43BB4N 3 phase, 50Hz, 400V / Indoor Cooling temperature 27°C D.B. 19°C W.B. / capacity Outdoor temperature 35°C D.B. / 12.5 kW Standard air volume 30m /min Entering Temperature Air Entering Condenser (°C D.B.) Temperature D.B.

  • Page 64: Discharge And Suction Pressure

    Model Cooling capacities are based on conditions below. A50BB4N 3 phase, 50Hz, 400V / Indoor Cooling temperature 27°C D.B. 19°C W.B. / capacity Outdoor temperature 35°C D.B. / 14.0 kW Standard air volume 31m /min Entering Temperature Air Entering Condenser (°C D.B.) Temperature D.B.

  • Page 65: Position Of The Centre Gravity

    16. POSITION OF THE CENTRE GRAVITY...

  • Page 66: Reaching Distance

    OUTSIDE DIMENSIONS CENTRE OF GRAVITY WEIGHT MODEL NAME WIDTH (mm) DEPTH HEIGHT X (mm) Y (mm) (mm) (mm) C24BBN5 C24BBN6 C28BBN5 C28BBN6 C28BBN8 1220 C34BBN7 1220 C34BBN8 1100 1220 C43BBN7 1100 1220 C43BBN8 1100 1220 C50BBN7 1100 1220 C50BBN8 17. REACHING DISTANCE...

  • Page 67: Sound Data

    18. SOUND DATA...

  • Page 71: Twin And Triple

    19. TWIN AND TRIPLE 19.1. Twin and Triple Operation - Simultaneous air conditioning of wide spaces and corners is possible. Indoor units with different horsepowers can even be used in combination. - Master unit and slave-units can be set automatically in twin and triple systems.
  • Page 72 remote control unit. Note that individual operation is not possible. 19.1.1. Twin and triple operation setting - The master unit and slave units are set automatically when the power is turned on. At this time, the indoor unit which is connected to the remote control unit becomes the master unit.
  • Page 73 19.1.2. Automatic address setting for twin and triple systems Procedure: Turn on the power supply for the indoor and outdoor units. Operation: Automatic address setting will start 10 to 30 seconds after the power supply is turned on, and will be completed after about 1 minute.
  • Page 74 priority for becoming the master unit. - The master unit thermostat will be used as the indoor temperature thermostat. If the master unit thermostat is turned on, the slave unit thermostats cannot be adjusted even if they happen to be on. - If address setting using the DIP switches is carried out after automatic address setting has been carried out, use DIP switch No.
  • Page 75 group addresses will be set instead, and the remote control open circuit error code (F26) will be displayed. 19.1.4. Automatic address resetting for twin/triple systems Function: - This reset the current twin/triple addresses which have been set automatically, and result in the reoccurance of automatic twin/ triple address settings.
  • Page 76 Outdoor unit main pipe Indoor unit combinations diameter (mm) Indoor unit capacity (HP) Branch ø 9.52 ø 6.35 ø 6.35 pipe Liquid side: Liquid side diameter Gas side ø 15.88 ø 12.7 ø 12.7 Gas side: Indoor unit capacity (HP) ø...
  • Page 77 differences for twin- and triple-type systems. Equivalent length L + la + lb + lc Within 50 m Branch pipe la, lb, (lc) Within 15 m diameter Branch pipe la - lb, lb - (lc), la - (lc) Within 10 m difference Height difference H1 Within 30...
  • Page 78 side pipe diameters and pipe lengths from the following table in order to charge the system. 19.4. Wiring...

  • Page 79: Wiring Mistake Prevention

    20. WIRING MISTAKE PREVENTION Improved quality of installation work through adoption of an “Connection error prevention” circuit which prevents wiring mistakes Connection errors with the control wires and the power supply wires will not only contribute to burning-out of the control circuit board, but can also cause large-scale working losses and affect reliability.

  • Page 80: Test Operation And Self Diagnosis

    will not operate if the wires have been connected incorrectly, so that current will not flow to the control circuit board. This is designed principally to conpensate human error during installation. Prevention of connection errors These units are equipped with connection error prevention circuits. If the units do not operate, it is possible that the connection error prevention circuits have been operated.
  • Page 81 - Never turn on the power supply until all installation work has been completed. - Turn on the circuit breaker before test operation extends past 12 hours. / (The crankcase heater will be energized, which will warm the compressor and prevent liquid compression.) - For three-phase models, check that the phase is not reversed.
  • Page 82 1. Check that “COOL” is displayed on the operation mode display, and then press the OFF/ON button to start test operation. 2. Within 1 minute of pressing the OFF/ON button, press the TEST RUN button. 3. The pipe temperature (gas pipe) will then be displayed in the temperature setting display of the remote control.
  • Page 83 1. Within 1 minute of pressing the OFF/ON button, press to cooling operation and then press the TEST RUN button. - If more than 1 minute passes, test operation cannot be started. In this case, press the OFF/ON button once more to repeat the operation.
  • Page 84 - The wired remote control display and the self-diagnosis LEDs (red) on the outdoor unit printed circuit board indicate where the abnormality has occurred. - Recalling the error display. <Air conditioner No.> - The air conditioner No. “01” appears during normal installation and use.
  • Page 85 will also change to show the air conditioner No.) / Press the TIMER SELECT/SET button while the error is displayed. / The F15 - F49 display will change to the detail display. / - After checking the error display and the detail display, refer to the self-diagnosis error code table on the following page and check the location of the problem.

  • Page 86: Setting Of Save Energy And Thermistor Switch

    22. SETTING OF SAVE ENERGY AND THERMISTOR SWITCH 22.1. Energy save setting - Lower limit can be set for the setting temperature during cooling operation. (The factory shipment setting has a lower limit of 16~C.)
  • Page 87 1. While operation is stopped, press the TEMP UP and TEMP DOWN buttons simultaneously. 2. To set a lower limit Press the OPERATION button until COOL is displayed. / / Press the TEMP UP or TEMP DOWN button to set the temperature. / Press the SET button to complete the lower limit setting.

  • Page 88: Group Control

    1. While operation is stopped, press and hold the TEST RUN button, TEMP UP button and TEMP DOWN button simultaneously. Press the FORWARD or BACK timer button to change the temperature detection setting. / 2. Press the SET button to complete the setting. To change the setting, repeat the above operation.

  • Page 89: Troubleshooting

    determined automatically after approximately 1 minute. (DIP switch settings are not necessary.) / NOTE: - Correct wiring connections are a basic requirement for automatic setting. If the wires are connected incorrectly when the power is turned on, the settings will not be made correctly and operation will not be possible.
  • Page 90 If test operation does not proceed correctly Carry out test operation after approximately 12 hours have passed since the power was turned on (crankcase heater is energized). If operation is started by using the remote control within 1 minute of turning on the power, the outdoor unit settings will not be made correctly and correct operation will not be possible.
  • Page 91 Symptom: / Remote control unit... Display of “No power supply” / NOTE: / Indoor unit... LED1 on printed circuit board stays illuminated / Outdoor unit... LED1 on printed circuit board stays illuminated / (When remote control display shows “Power supply”) (When remote control display shows “No power supply”) Remedy 1.
  • Page 92 1. The main power is turned on while the transmission wires between the indoor unit(s) are not connected (open circuit at section A) / Symptom: / Nothing abnormal appears on the remote control display. If operation is started in this condition, the combination of the 50BB outdoor unit and the 14BB4 indoor unit (master unit) will result in abnormal operation.
  • Page 93 3. The main power is turned on while the remote control connection cord is not connected (open circuit at section C) / Symptom: - Remote control unit.. . Display of “No power supply” - Indoor unit (master)... LED1 on the printed circuit board stays illuminated and the unit does not operate - Indoor unit (slave)...
  • Page 94 between the indoor unit and the outdoor unit are not connected (open circuit at section A) / Symptom: / Operation of indoor unit No. 1 and indoor unit No. 3 is possible. / However, “CHECK” flashes in the remote control display for 3-5 minutes after the main power is turned on.
  • Page 95 If slave units do not operate even after the wiring has been corrected (automatic addressing is not possible) 1. Check that DIP switches 1 to 4 and DIP switch 8 are all set to OFF, and then stop operation. / 2.
  • Page 96 Reset the address by following the procedure: A. After making sure that dip-switches No. 1 to 4 and No. 8 are OFF, stop the operation. B. Push address reset button (SW3) on the outdoor unit PC board for 4 seconds. Self-diagnosis LED No. 2 to 8 will start blinking in order.
  • Page 97 the switch by following the procedure: outdoor unit, then indoor unit with control, and finally other indoor units. The AC number will be set at random. / / When the slave units do not operate (when address cannot be set) Reset the address by following the procedure: A.

  • Page 98: Emergency Operation

    unit as follows: Procedures of deleting memory for twin/triple control system 1. Switch off the main power supply. 2. Set the No. 8 pin of dip switch (DSW1) at the indoor unit’s P.C. board to “ON” position. 3. Switch on the main power supply for a minute and then turn it off. 4.
  • Page 99 Emergency operation - Emergency operation of outdoor unit / Emergency operation can be carried out by setting the DSW1 switch on the printed circuit board of the outdoor unit to the EMERGENCY position. However, emergency operation is only carried out when an abnormality is detected by the indoor/outdoor temperature thermistors.
  • Page 100 Thermistor Cooling mode Outdoor Discharge temperature Open unit Heat exchanger outlet Shorted temperature - Refer to the circuit diagram for the connection locations for each thermistor. - If there is an abnormality in the room temperature thermistor, the temperature will be fixed at 25°C regardless of the remote control display.
  • Page 101 (*1) / Outdoor unit fan start control during cooling / At the start of cooling mode and drying mode operation, the outdoor unit heat exchanger outlet temperature is detected in order to set the fan speed. / Operation is carried out at the fan speed detected for 30 seconds. After 30 seconds, the heat exchanger outlet temperature is detected and the outdoor unit fan speed is changed automatically.
  • Page 102 drain pump turns on when the compressor turns on. (The drain pump turns on during freezing prevention control.) - When the compressor turns off, the drain pump will still continue its operation for 6 more minutes. - If the drain pump is running when operation stops or when the operating mode is changed, the drain pump will still continue its operation for another 6 more minutes.
  • Page 103 <If the float switch operates again after turning off> / <If the float switch continues to be off> 26.3. Freezing prevention control 1. Operation / During cooling mode operation, after 9 minutes have passed since the compressor turned on, the outdoor unit will stop its operation when the temperature detected by the indoor unit pipe temperature sensor is 2°C or lower.
  • Page 104 Room temperature (°C) Operation mode Setting Operation Differential temperature (To) 2.0K 4.0K 18.0 Cooling 16.0 33.0 31.0 2. Thermostat characteristics during dry mode / During dry mode operation, cooling mode operation is carried out in accordance with the indoor temperature as shown in the table below.
  • Page 105 * When modes 2 and 3 are active, dry mode operation starts when the cooling thermostat turns on. / When modes 2 and 3 have been stopped, the 10 min./5 min. times have no relevance. However, if the indoor temperature is / less than or equal to the remote control setting temperature, mode 4 is forcibly activated.
  • Page 106 2. During initial operation / When the OFF/ON button is pressed to start the operation, the louvre moves through one full cycle, and then swings automatically (if AUTO has been set using the remote control) or moves to the setting angle (if MANUAL has been set using the remote control).
  • Page 107 all abnormalities other than a discharge temperature abnormality, high pressure abnormality or overcurrent abnormality being ignored. 26.11. DIP switch settings - Indoor unit printed circuit board (DSW1) Setting type Factory Remarks shipment Group address When group operation is being carried out using the remote setting (twin/triple control, this address is set in order to control the order address setting)
  • Page 112 28. WIRELESS REMOTE CONTROL INSTALLATION MANUAL...

  • Page 119: Installation (Indoor Unit)

    29. INSTALLATION (INDOOR UNIT)

  • Page 128: Installation (Outdoor Unit)

    30. INSTALLATION (OUTDOOR UNIT)

  • Page 137: Replacement Parts

    31. REPLACEMENT PARTS 31.1. INDOOR UNIT...
  • Page 140 QTY. PART DESCRIPTION CS-A24BB4N CS-A28BB4N CS-A34BB4N CS-A43BB4N CS-A50BB4N BASE PAN ASS’Y CWD52K1034 INNER POLYSTYRENE (TOP) CWG071049 CWG071057 INNER POLYSTYRENE (SIDE) CWG07C1016 CWG07C1017 CABINET SIDE PLATE ASS’Y CWE04K1001 CWE04K1003 CABINET SIDE PLATE ASS’Y CWE04K1002 CWE04K1004 FAN MOTOR CWA921049 CWA921050 CWA921051 ANTI-VIBRATION BUSHING...
  • Page 141 PANEL DRAIN PUMP ASS’Y CWD93K1004 CWD93K1005 DRAIN PUMP CWB532005 ANTI-VIBRATION BUSHING CWH501017 FLOAT SWITCH - DRAIN PUMP CWA121076 DRAIN NOZZLE CWH411005 FLEXIBLE PIPE CWH851030 DRAIN HOSE HEAT INSULATION CWG101025 DRAIN PAN-COMPLETE CWH40C1018 CWH40C1019 DRAIN PLUG CWB82018 NOISE FILTER CWA491018 ELECTRONIC CONTROLLER CWA742528 LOCKING GUARD SPACER CWH541028...
  • Page 143 PART DESCRIPTION PART NO. QTY. FRONT GRILLE CWE121027 COVER-AIR SWING MOTOR CWH811013 CONNECTOR-SHAFT CWH081002 CONNECTOR-SHAFT CWH081003 CONNECTOR-SHAFT CWH081004 BEARING CWH641006 VANE CWE241103 CONNECTOR-SHAFT CWH081005 CONNECTOR-SHAFT CWH081006 AIR SWING MOTOR CWA981065 INSULATION POLYSTYRENE CWG071105 INSULATION POLYSTYRENE CWG071106 INSULATION POLYSTYRENE CWG071107 WASHER CWH571025 COVER CWD932215...
  • Page 147 PART DESCRIPTION QTY. CU-C24BBN5 CU-C24BBN6 CU-C28BBN5 CU-C28BBN6 CU-C28BBN8 BASE PAN ASS’Y CWD52K1038A COMPRESSOR NH41VNDT NH41NADT NH44YDET NH44NADT NH44YDET ANTI-VIBRATION BUSHING CWH501018 NUT FOR COMP. MOUNT. XNG8 WASHER for COMPRESSOR XWA8 SP WASHER CWH571018 CRANKCASE HEATER CWA341005 CONDENSER COMPLETE CWB32C1091 TUBE ASS’Y (CAPILLARY TUBE) CWT07K1024 PIPE HOLDER RUBBER CWG251016...
  • Page 148 CABINET REAR PLATE CWE02C1005...
  • Page 149 CONTROL BOARD CWH141004 COMPRESSOR RELAY CWA001005 CWA001007 TERMINAL BOARD ASS’Y CWA28K1027 CWA28K1029 CAPACITOR-FAN MOTOR ( 3/460) CWDS461305QP DS441456CPNB DS441506CPNB DS371556CPNA (45/370) (50/370) (55/370) CAPACITOR-COMP (MF/V) ELECTRONIC CONTROLLER CWA742587 CWA742588 TRANSFORMER CWA401029 CURRENT TRANSFORMER BOARD CWA742591 CWA742592 OVERLOAD PROTECTOR CWA121075 TERMINAL COVER CWH171019 CWH171022 BRACKET-FAN MOTOR...
  • Page 150 LEADWIRE-COMPRESSOR CWA67C3657 CWA67C3665 ACCESSORY COMPLETE CWH82C1105 INSTALLATION INSTRUCTION CWF612213 All parts are supplied from MACC, Malaysia (Vendor Code: 086)
  • Page 154 PART DESCRIPTION QTY. CU-C34BBN7 CU-C34BBN8 CU-C43BBN7 CU-C43BBN8 CU-C50BBN7 BASE PAN ASS’Y CWD52K1039A CWD52K1040A COMPRESSOR ZR45KCTF5522 ZR45KCTFD522 ZR57KCTF5599 ZR57KCTFD599 ZR68KCTF5599 ANTI-VIBRATION BUSHING CWH501020 NUT FOR COMP. MOUNT. 4582065 CRANKCASE HEATER CWA341004 CWA341002 CONDENSER COMPLETE CWB32C1093 CWB32C1097 TUBE ASS’Y(CAPILLARY TUBE) CWT07K1025 CWT07K1021 PIPE HOLDER RUBBER CWG251016 CWG251021...
  • Page 155 COMPRESSOR RELAY CWA001005 CWA001006 CWA001005 CWA001006 TERMINAL BOARD ASS’Y CWA28K1028 CWA28K1029 CWA28K1028 CWA28K1029 CWA28K1028 CAPACITOR-FAN MOTOR (3/460) CWDS461305QP ELECTRONIC CONTROLLER CWA742586 TRANSFORMER CWA401029 CURRENT TRANSFORMER BOARD CWA742591 CWA742592 CWA742591 CWA742592 CWA742591 BRACKET FAN MOTOR CWD541028 SCREW-BRACKET FAN MOTOR CWH551040 FAN MOTOR CWA951077 CWA951078 FAN MOTOR SUPPORTER...

  • Page 156: Cooling Capacity Performance Data

    All parts are supplied from MACC, Malaysia (Vendor Code: 086) 32. COOLING CAPACITY PERFORMANCE DATA Model Power Entering Temperature Air Entering Condeser (°C D.B.) Source (CS-) 25 °C 30 °C 35 °C 40 °C Temperature TC SHC IPT TC SHC IPT TC SHC IPT TC SHC IPT TC SHC D.B.
  • Page 157 A34BB4N 230V, 17 10.20 6.68 2.81 9.60 6.48 3.10 9.10 6.32 3.31 8.50 6.12 3.56 8.00 5.92 50Hz, 19 10.81 5.51 2.92 10.16 5.38 3.20 9.65 5.31 3.41 9.10 5.18 3.67 8.56 5.05 Single 22 11.68 4.20 3.01 11.14 4.23 3.29 10.51 4.21 3.48 9.91 4.16 3.74 9.24 4.07 phase 17 10.18 7.79 2.86 9.69 7.60 3.12 9.16 7.37 3.34 8.53 7.12 3.58 8.14 6.96 19 10.92 6.88 3.00 10.38 6.75 3.25 9.82 6.58 3.51 9.20 6.39 3.73 8.68 6.21...
  • Page 158 A43BB4N 4 00V, 17 12.63 8.27 3.13 12.00 8.10 3.42 11.38 7.91 3.74 10.75 7.74 4.0710.007.40 50Hz, 19 13.33 6.80 3.29 12.72 6.74 3.59 12.06 6.63 3.89 11.50 6.56 4.1910.806.37 Three 22 14.56 5.24 3.46 13.95 5.30 3.77 13.30 5.32 4.01 12.73 5.35 4.3612.005.28 phase 17 12.66 9.69 3.19 12.04 9.45 3.49 11.45 9.22 3.81 10.84 9.05 4.1410.128.65 19 13.55 8.54 3.38 12.92 8.40 3.67 12.28 8.23 3.98 11.63 8.08 4.3110.907.79...
  • Page 159 Model Cooling capacities are based on Model Cooling capacities are based conditions. conditions. CS-A24BB4N 1 phase, 50Hz, 230V CS-A28BB4N 1 phase, 50Hz, 230V Cooling Indoor temp. 27°C D.B. 19°C W.B. Cooling Indoor temp. 27°C D.B. 19°C capacity capacity 6.3kW Outdoor temp. 35°C D.B.

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