Panasonic CS-V28BKP5 Service Manual
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Panasonic CS-V28BKP5 Service Manual

Panasonic CS-V28BKP5 Service Manual

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CONTENTS
CS-V28BKP5/CU-V28BKP5
(Refrigerant:R407C)
Page
2
3
6
8
9
10
11
12
19
39
© 2001 Matsushita Air-Conditioning Corp. Sdn. Bhd.
(183914D) All rights reserved. Unauthorized copying
and distribution is a violation of law.
Order No: TAC0204003C2

Room Air Conditioner

Page
50
57
61
63
65
66
67
68
69
70

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Summary of Contents for Panasonic CS-V28BKP5

  • Page 1: Table Of Contents

    Order No: TAC0204003C2 Room Air Conditioner CS-V28BKP5/CU-V28BKP5 (Refrigerant:R407C) CONTENTS Page Page 1 Features 11 3-way Valve 2 Functions 12 Servicing Information 3 Product Specifications 13 Troubleshooting Guide 4 Dimensions 14 Technical Data 5 Refrigeration Cycle Diagram 15 Exploded View 6 Block Diagram...

  • Page 2: Features

    CS-V28BKP5/CU-V28BKP5 1 Features • High Efficiency • Auto Restart after Power Failure • High Efficiency Airflow Circuit • Long Piping up to 30m • Compact Design • Catechin Deodorizing Air Filter • Deodorizing Control during operation...

  • Page 3: Functions

    CS-V28BKP5/CU-V28BKP5 2 Functions Remote Control OFF / ON I TEMP. Operation OFF / ON Room Temperature Setting • Temperature Setting (16˚C to 30˚C) • Automatic Operation MODE Operation Mode Selection 2˚C lower than standard Standard • Automatic Operation Mode AUTO •...
  • Page 4 CS-V28BKP5/CU-V28BKP5 Indoor Unit Auto Restart Control • Operation is restarted after power failure AUTO at previous setting mode. OFF / ON Auto Operation Switch Anti-Freezing Control • Used when the remote control cannot be • Anti-Freezing control for indoor heat used.
  • Page 5 CS-V28BKP5/CU-V28BKP5 Outdoor Unit Overload Protector • Inner protector (Compressor, Fan Motor). 60 Secs. Forced Operation Control • Once the compressor is activated, it does not stop for 60 secs. (Stops imme- diately with remote control stop signal.) Outdoor Fan Operation Control •...

  • Page 6: Product Specifications

    CS-V28BKP5/CU-V28BKP5 3 Product Specifications Unit CS-V28BKP5 CU-V28BKP5 Cooling Capacity 7.90 - 7.80 Btu/h 27,000 - 26,600 ——— ——— Btu/h Moisture Removal Pint/h Power Source Phase Single 230 - 220 Cycle Airflow Method OUTLET SIDE VIEW TOP VIEW INTAKE Air Volume...
  • Page 7 CS-V28BKP5/CU-V28BKP5 Power Cord Length — Number of core-wire 3 (2.5 mm — Dimensions Height inch (mm) 14 - 9/16 (370) 26 - 31/32 (685) Width inch (mm) 48 - 1/32 (1,220) 34 - 21/32 (880) Depth inch (mm) 8 - 21/32 (220)

  • Page 8: Dimensions

    CS-V28BKP5/CU-V28BKP5 4 Dimensions CS-V28BKP5/ CU-V28BKP5...

  • Page 9: Refrigeration Cycle Diagram

    CS-V28BKP5/CU-V28BKP5 Dimensions CS-V28BKP5 / CU-V28BKP5 5 Refrigeration Cycle Diagram CS-V28BKP5 / CU-V28BKP5...

  • Page 10: Block Diagram

    CS-V28BKP5/CU-V28BKP5 6 Block Diagram CS-V28BKP5 / CU-V28BKP5...

  • Page 11: Wiring Diagram

    CS-V28BKP5/CU-V28BKP5 7 Wiring Diagram CS-V28BKP5 / CU-V28BKP5...

  • Page 12: Operation Details

    CS-V28BKP5/CU-V28BKP5 8 Operation Details 8.1. Cooling Mode Operation Cooling in operation according to Remote Control setting. Time Delay Safety Control (3 minutes) • When the compressor is stopped by Power Switch, Remote Control or there is a power failure, it restarts after 3 minutes when the Power Switch, Remote Control is turned ON or the power supply is resumed.
  • Page 13 CS-V28BKP5/CU-V28BKP5 Automatic Fan Speed Mode When Automatic Fan Speed is selected at Remote Control during cooling operation. • Fan speed rotates in the range of Hi to Me. • Deodorizing Control. Cooling Operation Time Diagram...

  • Page 14: Soft Dry Mode Operation

    CS-V28BKP5/CU-V28BKP5 8.2. Soft Dry Mode Operation • The unit starts cooling operation until the room temperature reaches the setting temperature set on the Remote Control, and then Soft Dry operation will start. • During Soft Dry operation, the Indoor Fan operates with SLo speed.
  • Page 15 CS-V28BKP5/CU-V28BKP5 Soft Dry Operation Time Diagram...

  • Page 16: Automatic Mode Operation

    CS-V28BKP5/CU-V28BKP5 8.3. Automatic Mode Operation 1. When the Automatic Mode Operation is selected, the indoor fan operates at SLo fan speed for 20 seconds to sense intake air temperature and determine the 1st operation mode. Standard for Determining Operation Mode Judgement Note:Below setting is available by cutting jumper wire (J-TMP) 2 .After judging operation mode will not shift .However during soft dry operation mode .

  • Page 17: Auto Restart Control

    CS-V28BKP5/CU-V28BKP5 8.4. Sleep Mode Auto Operation Cooling or Soft Dry Operation When you press the SLEEP Mode, the following movement will start to avoid overcooling. • The fan speed refer to Indoor Fan Motor Control. • The setting temperature will be risen by 0.5°C at the start of operation and by 0.5°C one hour later.

  • Page 18: Airflow Direction Control

    CS-V28BKP5/CU-V28BKP5 8.7. Airflow Direction Control Airflow Direction Auto-Control Airflow Direction Manual Control • When set a Airflow Direction Auto-Control with remote • When the airflow direction set button is pressed, the control, the louver swings up and down as shown in the automatic airflow is released and the airflow direction louver diagram.

  • Page 19: Operating Instructions

    CS-V28BKP5/CU-V28BKP5 9 Operating Instructions Safety Precautions Before operating, please read the following “Safety Precautions” carefully. To prevent personal injury, injury to others and property damage, the following instructions must be followed. Incorrect operation due to ignoring of instructions will cause harm or damage, the seriousness of which is...
  • Page 20 CS-V28BKP5/CU-V28BKP5 Operation precautions Warning Insert the power plug Do not operate or stop the Do not damage or use an properly. unit by inserting or pulling unspecified power cord. out the power plug. Heat generated by a loose It will cause electrical shock or...
  • Page 21 CS-V28BKP5/CU-V28BKP5 Caution Do not remove the power Switch off the power supply if When cleaning the unit, re- plug by pulling the cord. the unit is not going to be move the plug. used for a long period of time.

  • Page 22: Name Of Each Part

    CS-V28BKP5/CU-V28BKP5 Name of Each Part Indoor unit Front Panel Signal Receptor Air Intake Vent Power Sleep Timer Panel Opener Orange Orange Vertical Airflow Direction Louver Operation Indication Lamps (LED) Air Outlet Vent Horizontal Airflow Direction Louver (Manually adjusted) Outdoor unit...
  • Page 23 CS-V28BKP5/CU-V28BKP5 Separate displays and functions are available when the door is opened. ON-Timer Button OFF-Timer Button Door Time Button Door OFF-TIMER TIME ON-TIMER CANCEL Cancellation Button Set Button Clock Button...

  • Page 24: Preparation Before Operation

    CS-V28BKP5/CU-V28BKP5 Preparation Before Operation Before operating the unit Connect the power supply cord to an independent power supply. Open the front panel. Remove air filter. filter Hold the panel openers at both Hold the tab to raise up sides and pull up the front panel.
  • Page 25 CS-V28BKP5/CU-V28BKP5 How to insert batteries Fix the cover to the back of the remote Gently press the OPEN place marked control (“PM 12:00” will flash in the opera- [OPEN] and slide tion display.) the cover toward you. e r Be sure that the (+) and (–) directions...

  • Page 26: How To Operate

    CS-V28BKP5/CU-V28BKP5 How to Operate Auto Restart Control. If there is a power failure, operation will be automatically restarted after 3 minutes when the power is resumed with previous operation mode and airflow direction. (When the operation is not stopped by re- mote control.)
  • Page 27 CS-V28BKP5/CU-V28BKP5 Press to select operation mode. MODE The display changes in the order each time the button is pressed. Press to start the operation. OFF/ON I Operation indication lamp (RED) will light up. Press once more, to stop the operation.

  • Page 28: Setting The Timer

    CS-V28BKP5/CU-V28BKP5 Setting the Timer If there is a power failure. To reset the Timer. (Example) If the OFF Timer has been set. OFF-TIMER Even if there is a power failure, the setting time is still stored in the memory because the re- mote control is a battery operated type.

  • Page 29: To Set The Timer

    CS-V28BKP5/CU-V28BKP5 To set the current time. Set hours and minutes TIME ..to advance the time ..to reverse the time To set the Timer. OFF Timer Set hours and minutes OFF-TIMER ..to increase 10 minutes TIME each step.

  • Page 30: Convenient Operation

    CS-V28BKP5/CU-V28BKP5 Convenient Operation Sleep Mode This is to gain a comfortable room temperature while sleeping. To set Sleep Mode. Press SLEEP (The sleep indication lamp on the main unit will light up.) To cancel Sleep Mode. Press once more SLEEP (The sleep indication lamp on the main unit will switch off.)
  • Page 31 CS-V28BKP5/CU-V28BKP5 When the remote control cannot be used Test Run Button. (Use when installing and moving) Auto Operation Button. When the remote control cannot be used, press Auto Operation Button to run Automatic Operation. (Airflow direction setting will be automatic.) Press Auto Operation Button.

  • Page 32: Operation Hints

    CS-V28BKP5/CU-V28BKP5 Operation Hints Adjust room temperature properly. Set the Clean the air filter regularly. Blockage in the temperature 1°C higher than actually desired. air filter reduces the airflow and lowers the Approximately 10% of electricity of electricity cooling or heating. Clean at least once every costs can be saved.
  • Page 33 CS-V28BKP5/CU-V28BKP5 Make sure that the doors and windows are shut. Keep blinds or curtains closed. Do not let sun- Otherwise, cooling and heating performance will shine enter the room directly. About 5% of be reduced and electricity cost is wasted.

  • Page 34: Better Care And Maintenance

    CS-V28BKP5/CU-V28BKP5 Better Care and Maintenance Regular care and maintenance will extend the life of the air conditioner and prevent wastage of electricity. Before performing any maintenance procedure, be sure to switch off the main power supply. Do not use water or volatile liquids.
  • Page 35 CS-V28BKP5/CU-V28BKP5 Replacement of air purifying filters Remove the air filters. Remove the filters Remove the air purify- ing filters. from the filter frame. ! Caution Be careful not to hurt your hands on metal parts. Filters Solar Refreshing Catechin Air...

  • Page 36: Troubleshooting

    CS-V28BKP5/CU-V28BKP5 Troubleshooting Normal operation Is it okay? This is the answer. Sight Air conditioner has been This is to protect the air conditioner. Wait until restarted, but does not the air conditioner begins operating. operate for 3 minutes. Soft Dry Mode Operation is a very gentle...
  • Page 37 CS-V28BKP5/CU-V28BKP5 Abnormal operation Has the circuit breaker been tripped? Has the power plug been removed from the The air conditioner wall outlet? does not operate. Is the Timer being used correctly? Has the REMOTE CONTROLLER B ↔ A switch been set to “B”?
  • Page 38 CS-V28BKP5/CU-V28BKP5 WARNING (1) REMOVE POWER PLUG OR DISCONNECT FROM THE MAINS BEFORE SERVICING THIS APPLIANCE. (2) THIS APPLIANCE MUST BE EARTHED. (3) THE APPLIANCE IS NOT INTENDED FOR USE BY YOUNG CHILDREN OR INFIRM PERSONS WITHOUT SUPERVISION (4) YOUNG CHILDREN SHOULD BE SUPERVISED TO ENSURE THAT THEY DO NOT PLAY WITH THE APPLIANCE.

  • Page 39: Installation Instructions

    CS-V28BKP5/CU-V28BKP5 10 Installation Instructions Location Installation period Storing method Outdoors 1 month or more Pinching Less than 1 month Pinching or taping Indoors • • • • Pinching method 10.1. New refrigerant Series [R407C] Close off the ends of the pipes with pliers or similar tool pipe installation and seal the opening by brazing.
  • Page 40 CS-V28BKP5/CU-V28BKP5 11. Air-tightness test. (It is recommended that a manifold with sight glass be used.) For the final check, there should be no pressure drop when 3.3 MPa is applied for 24 hours. 12. Vacuum drying. Boiling point at normal atmospheric pressure...

  • Page 41: Safety Precautions

    CS-V28BKP5/CU-V28BKP5 Required tools for Installation Works 1. Phillips screw driver 5. Spanner 9. Gas leak detector 13. Multimeter 2. Level gauge 6. Pipe cutter 10. Measuring tape 14. Torque wrench 18 N.m (1.8 kgf.m) 65 N.m (6.5 kgf.m) 3. Electric drill, hole core drill 7.
  • Page 42 CS-V28BKP5/CU-V28BKP5 1. Grounding is necessary. It may cause electrical shock if grounding is not perfect. 2. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire.
  • Page 43 CS-V28BKP5/CU-V28BKP5 Attached accessories Piping length and the elevation Pipe size Max. Max. Rated Additional Piping Elevation Refrigerant Model Gas Liquid Length Elevation Length B (m) (g/m) A (m) 5/8” 1/4” V28BKP5 Example: If the unit will be installed at a 12 m distance, the quantity of additional refrigerant should be 80 g...(12-10 m) ×...

  • Page 44: Indoor Unit

    CS-V28BKP5/CU-V28BKP5 10.3. INDOOR UNIT 10.3.1. SELECT THE BEST LOCATION 10.3.3. TO DRILL A HOLE IN THE WALL (Refer to “Select the best location” AND INSTALL A SLEEVE OF section) PIPING 1. Insert the piping sleeve to the hole. 10.3.2. HOW TO FIX INSTALLATION 2.
  • Page 45 CS-V28BKP5/CU-V28BKP5 (This can be used for left rear piping and left bottom piping also.)
  • Page 46 CS-V28BKP5/CU-V28BKP5 10.3.5. CONNECT THE CABLE TO THE INDOOR UNIT 1. The inside and outside indoor/outdoor connecting cable can be connected without removing the front grille. 2. Indoor/outdoor connecting cable between indoor unit and outdoor unit shall be approved polychorprene sheathed 3 ×...

  • Page 47: Outdoor Unit

    CS-V28BKP5/CU-V28BKP5 10.4. OUTDOOR UNIT HOW TO TAKE OUT FRONT GRILLE Please follow below steps to take out front grille if necessary such as when servicing. 10.4.1. SELECT THE BEST LOCATION Remove the Grille from the chassis. (Refer to “Select the best location”...

  • Page 48: Evacuation Of The Equipment

    CS-V28BKP5/CU-V28BKP5 CUTTING AND FLARING THE PIPING 2. Connect the center hose of the charging set to a vacuum pump. 1. Please cut using pipe cutter and then remove the burrs. 3. Turn on the power switch of the vacuum pump and make 2.

  • Page 49: Pipe Insulation

    CS-V28BKP5/CU-V28BKP5 10.4.6. PIPE INSULATION EVALUATION OF THE PERFORMANCE 1. Operate the unit at cooling operation mode for fifteen minutes or more. 1. Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. 2. Measure the temperature of the intake and discharge air.

  • Page 50: 11 3-Way Valve

    CS-V28BKP5/CU-V28BKP5 11 3-way Valve 3-way Valve (Liquid Side) 3-way Valve (Gas Side) Works Shaft Position Service Port Shaft Position Service Port Shipping Close Closed Closed Closed (With valve cap) (With cap) (With valve cap) (With cap) Evacuation Closed Open Closed...

  • Page 51: Evacuation Of Installation

    CS-V28BKP5/CU-V28BKP5 11.1. Evacuation of Installation When installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following procedure. Required tools: hexagonal wrench, adjustable wrench, The air in the indoor unit and in the piping must be purged. If air...

  • Page 52: Pumping Down

    CS-V28BKP5/CU-V28BKP5 11.2. Pumping down Procedure: 1. Confirm that both the 3-way valves are set to the open 6. Operate the air conditioner at the cooling cycle and position. stop it when the gauge indicates 0 kg/cm G (0 MPa). • Remove the valve stem caps and confirm that the valve •...
  • Page 53 CS-V28BKP5/CU-V28BKP5 11.3. Evacuation of Re-installation WHEN REINSTALLING AN AIR CONDITIONER, BE SURE TO If air remain in the indoor unit and refrigeration pipes, it will EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES affect the compressor, reduce to cooling capacity, and could in the following procedure.
  • Page 54 CS-V28BKP5/CU-V28BKP5 11.4. Balance refrigerant of the 3-way valves (Lack of refrigerant in the refrigeration cycle) Procedure: 1. Confirm that both the 3-way valves are set to the open position. 2. Connect the charge set to the 3-way valve’s service port.
  • Page 55 CS-V28BKP5/CU-V28BKP5 11.5. Evacuation (No refrigerant in the refrigeration cycle) Procedure: 1. Connect the vacuum pump to the charge set’s centre hose. 2. Turn on the vacuum pump to evacuate the unit. • Confirm that the gauge needle has moved toward -76 cmHg (-0.1 MPa).

  • Page 56: Gas Charging

    CS-V28BKP5/CU-V28BKP5 11.6. Gas charging (After Evacuation) Procedure: 1. Connect the charge hose to the charging cylinder. 5. Mount the valve stem nuts and the service port caps onto the 3-way valves. • Connect the charge hose which was disconnected from •...

  • Page 57: Servicing Information

    CS-V28BKP5/CU-V28BKP5 12 Servicing Information (A) Disassembly of the parts (Indoor Unit) • Inspection points for the Indoor Electronic Controller 1. The Electronic Controller, a signal Receiver and an Indicator can be seen by removing the Front Grille and Control Board Cover, as shown in the .
  • Page 58 CS-V28BKP5/CU-V28BKP5 3. Remove the Discharge Grille. Remove the Discharge Grille and then pull the Discharge Grille in a down and forward direction. Fig. 4 4. Remove the Indoor Fan Motor. Loosen the Fan Mounting Screw at the junction with Cross Flow Fan.
  • Page 59 CS-V28BKP5/CU-V28BKP5 • Cross Flow Fan Removal Procedure. 1. (Refer to No. 4 of Indoor Fan Motor the removal procedure) Loosen the screw at the right side of the evaporator. Fig. 8 2. Pull the left side of the evaporator forward slightly and remove the cross Flow Fan.
  • Page 60 CS-V28BKP5/CU-V28BKP5 (C) Remote Control Transmission Setting • Remote Control Reset When the batteries are inserted for the first time, or the batteries are replaced, all the indications will blink and the remote control might not work. If this happen, remove the back cover of the remote control and you will find a resetting terminal, and by shorting it with a minus screwdriver, it will return to normal.

  • Page 61: Troubleshooting Guide

    CS-V28BKP5/CU-V28BKP5 13 Troubleshooting Guide 13.1. Refrigeration cycle system In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan.
  • Page 62 CS-V28BKP5/CU-V28BKP5 13.1.1. Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Heating Mode Condition of the air conditoner Low Pressure High Pressure Electric current Low Pressure High Pressure Electric current during operation during operation...

  • Page 63: Technical Data

    CS-V28BKP5/CU-V28BKP5 14 Technical Data CS-V28BKP5...
  • Page 64 CS-W28BKP5/CU-W28BKP5 CS-V28BKP5/CU-V28BKP5 CS-V28BKP5 / CU-V28BKP5...

  • Page 65: Exploded View

    CS-V28BKP5/CU-V28BKP5 15 Exploded View CS-V28BKP5...

  • Page 66: Replacement Parts List

    CS-V28BKP5/CU-V28BKP5 16 Replacement Parts List <Model: CS-V28BKP5> DESCRIPTION & NAME CS-V28BKP5 REMARKS CHASSIS COMPLETE CWC5239-970 FAN MOTOR CWC4301-370 CROSS FLOW FAN COMPLETE CWC5707-260 BEARING ASS’Y CWC4059-190 SCREW (CROSS FLOW FAN) CWC4582-660 EVAPORATOR COMPLETE ASS'Y CWC6325-350 TUBE ASS’Y COMPLETE CWC5811-770 INSTALLATION PLATE...

  • Page 67: Explodedview

    CS-V28BKP5/CU-V28BKP5 17 ExplodedView CU-V28BKP5...

  • Page 68: Replacement Parts List

    CS-V28BKP5/CU-W28BKP5 18 Replacement Parts List <Model: CU-V28BKP5> DESCRIPTION & NAME CU-V28BKP5 REMARKS CHASSIS ASS’Y CWC5244-200A SOUND PROOF CWC5236-060 FAN MOTOR BRACKET CWC5241-830 SCREW - (FAN MOTOR BRACKET) XTT4D10CXW PARTICULAR PLATE - LEFT (HOLD - FAN MOTOR) CWC4934-850 PARTICULAR PLATE - RIGHT (HOLD - FAN MOTOR)

  • Page 69: Electronic Parts List

    CS-V28BKP5/CU-V28BKP5 19 Electronic Parts List Electronic Controller: C3919-390A (CS-V28BKP5) SYMBOL DESCRIPTION & NAME PART NO. INTEGRATED CIRCUIT C4083-920 INTEGRATED CIRCUIT C4083-450 INTEGRATED CIRCUIT C4083-860 INTEGRATED CIRCUIT C4083-730 INTEGRATED CIRCUIT C4083-720 TRANSISTOR C4086-060T TRANSISTOR C4086-240T Q3, Q5 TRANSISTOR J4086-080T D1 ~ D4...

  • Page 70: Electronic Circuit Diagram

    CS-V28BKP5/CU-V28BKP5 20 Electronic Circuit Diagram • CS-V28BKP5 / CU-V28BKP5 SCHEMATIC DIAGRAM 1/3 ELECTRONIC CIRCUIT CN-SW-B CN-SW-A 100u/6.3V S-TEST PUMP DOWN F-TEST AUTO RUN PH-3 PH-3 PIPE TEMPERATURE SENSOR (20K,3950) + C21 10uF/16V C4083-910 + C3 TCMP1 TCMP2 10uF/16V INTAKE AIRE TEMPERATURE...
  • Page 71 CS-V28BKP5/CU-V28BKP5 SCHEMATIC DIAGRAM 2/3...
  • Page 72 CS-V28BKP5/CU-V28BKP5 SCHEMATIC DIAGRAM 3/3...
  • Page 73 CS-V28BKP5/CU-V28BKP5...
  • Page 74 CS-V28BKP5/CU-V28BKP5 How to use electronic circuit diagram TIMER TABLE Test mode Name Time (When test point Remarks Short-circuited) Sleep Mode Waiting 1 hr. 6 sec. Sleep Mode Operation 8 hrs. 48 sec. 1 hr. 1 min. Real Timer 10 min.

  • Page 75: Remote Control

    CS-V28BKP5/CU-V28BKP5 20.1. REMOTE CONTROL TAMACO Printed in Taiwan...

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