Table of Contents
Troubleshooting
Related Manuals for Panasonic CS-A28BKP5
Summary of Contents for Panasonic CS-A28BKP5
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Page 1: Table Of Contents
Order No:TAC0204001C2 Room Air Conditioner CS-A28BKP5/CU-A28BKP5 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-A28BKP5/CU-A28BKP5 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 • Cold draught Control... -
Page 3: Functions
CS-A28BKP5/CU-A28BKP5 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-A28BKP5/CU-A28BKP5 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-A28BKP5/CU-A28BKP5 Outdoor Unit 4-Way Valve Control • When the unit is switched to “OFF” during Heating operation, 4-way valve stays at Heating Position for 5 minutes. Overload Protector • Inner protector (Compressor, Fan Motor). 60 Secs. Forced Operation Control • Once the compressor is activated, it does not stop for 60 secs.
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Page 6: Product Specifications
CS-A28BKP5/CU-A28BKP5 3 Product Specifications Unit CS-A28BKP5 CU-A28BKP5 Cooling Capacity 7.92 - 7.80 Btu/h 27,000 - 26,600 Heating Capacity 8.35 - 8.25 Btu/h 28,500 - 28,200 Moisture Removal Pint/h Power Source Phase Single 230 - 220 Cycle Airflow Method OUTLET SIDE VIEW... - Page 7 CS-A28BKP5/CU-A28BKP5 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)
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Page 8: Dimensions
CS-A28BKP5/CU-A28BKP5 4 Dimensions CS-A28BKP5/ CU-A28BKP5... -
Page 9: Refrigeration Cycle Diagram
CS-A28BKP5/CU-A28BKP5 Dimensions CS-A28BKP5/CU-A28BKP5 5 Refrigeration Cycle Diagram CS-A28BKP5/CU-A28BKP5 CS-A28BKP5/CU-A28BKP5... -
Page 10: Block Diagram
CS-A28BKP5/CU-A28BKP5 6 Block Diagram CS-A28BKP5/CU-A28BKP5... -
Page 11: Wiring Diagram
CS-A28BKP5/CU-A28BKP5 7 Wiring Diagram CS-A28BKP5 / CU-A28BKP5... -
Page 12: Operation Details
CS-A28BKP5/CU-A28BKP5 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-A28BKP5/CU-A28BKP5 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...
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Page 14: Soft Dry Mode Operation
CS-A28BKP5/CU-A28BKP5 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 Lo speed. - Page 15 CS-A28BKP5/CU-A28BKP5 Soft Dry Operation Time Diagram...
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Page 16: Heating Mode Operation
CS-A28BKP5/CU-A28BKP5 8.3. Heating Mode Operation • Heating in operation according to Remote Control setting. Time Delay Safety Control • 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 17 CS-A28BKP5/CU-A28BKP5 Automatic Fan Speed Mode When Automatic Fan Speed is selected at Remote Control during heating operation. • Fan speed rotates in the range of Hi → SLo according to the heat exchanger temperature. Heating Operating Time Diagram...
- Page 18 CS-A28BKP5/CU-A28BKP5 Deicing Control Deice starts to prevent frosting at outdoor heat exchanger. • Normal Deicing Deice operations detection commences in Heating operation starts or 60 minutes after previous deice operation. If the outdoor piping temperature drops to -4°C for 50 sec. continuously during compressor is in operation, deice will start.
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Page 19: Automatic Mode Operation
CS-A28BKP5/CU-A28BKP5 b) Overload Deicing Time Diagram 8.4. 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. -
Page 20: Auto Restart Control
CS-A28BKP5/CU-A28BKP5 8.5. 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 21: Airflow Direction Control
CS-A28BKP5/CU-A28BKP5 8.8. 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 22: Operating Instructions
CS-A28BKP5/CU-A28BKP5 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 23 CS-A28BKP5/CU-A28BKP5 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 24 CS-A28BKP5/CU-A28BKP5 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.
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Page 25: Name Of Each Part
CS-A28BKP5/CU-A28BKP5 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 26 CS-A28BKP5/CU-A28BKP5 Accessories Remote Control Two R03 dry-cell batteries or equivalent Remote control Air Purifying Filters (with deodorizing function) Signal Transmitter Operation Display OFF/ON Button Sleep Mode Operation Button Airflow Volume Selection Button Airflow Direction Manual Control Button Room Temperature Setting Button...
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Page 27: Preparation Before Operation
CS-A28BKP5/CU-A28BKP5 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 28 CS-A28BKP5/CU-A28BKP5 How to insert batteries Fix the cover to the back of the remote Gently press the OPEN control (“PM 12:00” will flash in the opera- place marked [OPEN] and slide tion display.) the cover toward you. e r Be sure that the (+) and (–) directions...
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Page 29: How To Operate
CS-A28BKP5/CU-A28BKP5 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 30 CS-A28BKP5/CU-A28BKP5 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.
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Page 31: Setting The Timer
CS-A28BKP5/CU-A28BKP5 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 32: To Set The Timer
CS-A28BKP5/CU-A28BKP5 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 33: Convenient Operation
CS-A28BKP5/CU-A28BKP5 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 34 CS-A28BKP5/CU-A28BKP5 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.
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Page 35: Operation Hints
CS-A28BKP5/CU-A28BKP5 Operation Hints Adjust room temperature properly. Set the Clean the air filter regularly. Blockage in the temperature 1°C higher (Cooling Operation) air filter reduces the airflow and lowers the or 2°C lower (Heating Operation) than actu cooling or heating. Clean at least once every ally desired. - Page 36 CS-A28BKP5/CU-A28BKP5 Make sure that the doors and windows are Keep blinds or curtains closed. Do not let sun shut. Otherwise, cooling and heating per shine enter the room directly. About 5% of formance will be reduced and electricity cost electricity cost can be saved.
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Page 37: Better Care And Maintenance
CS-A28BKP5/CU-A28BKP5 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. -
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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 Deodorizing Filter Purifying Filter Air filter
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Page 39: Troubleshooting
CS-A28BKP5/CU-A28BKP5 Troubleshooting Normal operation Is it okay? This is the answer. Sight Air conditioner has been re- This is to protect the air conditioner. Wait until started, does the air conditioner begins operating. operate for 3 minutes. Soft Dry Mode Operation is a very gentle cooling operation consisting primarily of dehumidifying. -
Page 40: Air Conditioner Operation
CS-A28BKP5/CU-A28BKP5 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 41 CS-A28BKP5/CU-A28BKP5 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.
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Page 42: Installation Instructions
CS-A28BKP5/CU-A28BKP5 10 Installation Instructions 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. - Page 43 CS-A28BKP5/CU-A28BKP5 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 44 CS-A28BKP5/CU-A28BKP5 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” W28BKP5 1/4” 5/8” 1/4” A28BKP5 Example: If the unit will be installed at a 12 m distance, the quantity of additional refrigerant should be 80 g...(12-10 m) ×...
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Page 45: Indoor Unit
CS-A28BKP5/CU-A28BKP5 10.2. INDOOR UNIT 10.2.1. SELECT THE BEST LOCATION 10.2.3. 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. 10.2.2. HOW TO FIX INSTALLATION 2. - Page 46 CS-A28BKP5/CU-A28BKP5 (This can be used for left rear piping and left bottom piping also.)
- Page 47 CS-A28BKP5/CU-A28BKP5 10.2.5. 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 5 ×...
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Page 48: Outdoor Unit
CS-A28BKP5/CU-A28BKP5 10.3. OUTDOOR UNIT HOW TO TAKE OUT FRONT GRILLE Please follow below steps to take out front grille if necessary such as when servicing. 10.3.1. SELECT THE BEST LOCATION Remove the Grille from the chassis. (Refer to “Select the best location”... -
Page 49: Evacuation Of The Equipment
CS-A28BKP5/CU-A28BKP5 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 50: Pipe Insulation
CS-A28BKP5/CU-A28BKP5 10.3.6. 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 51: 11 3-Way Valve
CS-A28BKP5/CU-A28BKP5 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 52: Evacuation Of Installation
CS-A28BKP5/CU-A28BKP5 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 53: Pumping Down
CS-A28BKP5/CU-A28BKP5 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 54 CS-A28BKP5/CU-A28BKP5 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 55 CS-A28BKP5/CU-A28BKP5 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 56 CS-A28BKP5/CU-A28BKP5 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).
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Page 57: Gas Charging
CS-A28BKP5/CU-A28BKP5 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 58: Servicing Information
CS-A28BKP5/CU-A28BKP5 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 59 CS-A28BKP5/CU-A28BKP5 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 60 CS-A28BKP5/CU-A28BKP5 • 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 61 CS-A28BKP5/CU-A28BKP5 (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.
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Page 62: Troubleshooting Guide
CS-A28BKP5/CU-A28BKP5 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 63 CS-A28BKP5/CU-A28BKP5 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...
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Page 64: Technical Data
CS-A28BKP5/CU-A28BKP5 14 Technical Data CS-A28BKP5... - Page 65 CS-A28BKP5/CU-A28BKP5 CS-A28BKP5 / CU-A28BKP5...
- Page 66 CS-A28BKP5/CU-A28BKP5 CS-A28BKP5 / CU-A28BKP5...
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Page 67: Exploded View
CS-A28BKP5/CU-A28BKP5 15 Exploded View CS-A28BKP5... -
Page 68: Replacement Parts List
CS-A28BKP5/CU-A28BKP5 16 Replacement Parts List -
Page 69: Explodedview
CS-A28BKP5/CU-A28BKP5 17 ExplodedView CU-A28BKP5... -
Page 70: Replacement Parts List
CS-A28BKP5/CU-A28BKP5 18 Replacement Parts List -
Page 71: Electronic Parts List
CS-A28BKP5/CU-A28BKP5 19 Electronic Parts List Electronic Controller: C3919-420A (CS-A28BKP5) SYMBOL DESCRIPTION & NAME PART NO. INTEGRATED CIRCUIT C4083-910 INTEGRATED CIRCUIT C4083-450 INTEGRATED CIRCUIT C4083-860 INTEGRATED CIRCUIT C4083-730 INTEGRATED CIRCUIT C4083-720 PHOTO COUPLER C4094-040 TRANSISTOR C4086-060T TRANSISTOR C4086-240T Q3, Q5 TRANSISTOR... -
Page 72: Electronic Circuit Diagram
CS-A28BKP5/CU-A28BKP5 20 Electronic Circuit Diagram • CS-A28BKP5 / CU-A28BKP5 SCHEMATIC DIAGRAM 1/3... - Page 73 CS-A28BKP5/CU-A28BKP5 SCHEMATIC DIAGRAM 2/3...
- Page 74 CS-A28BKP5/CU-A28BKP5 SCHEMATIC DIAGRAM 3/3...
- Page 75 CS-A28BKP5/CU-A28BKP5...
- Page 76 CS-A28BKP5/CU-A28BKP5 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.
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Page 77: Remote Control
CS-A28BKP5/CU-A28BKP5 20.1. REMOTE CONTROL Printed in Taiwan...