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Summary of Contents for Panasonic CS-VG120KE
- Page 1 Order number RAC9911057C2 Room Air Conditioners CS-VG120KE CU-VG120KE © 1999 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying distribution is a violation of law.
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Page 2: Table Of Contents
14.1. HOW TO USE ELECTRONIC CIRCUIT DIAGRAM 8.10. QUIET OPERATION 14.2. TIMER TABLE 8.11. POWERFUL MODE OPERATION 14.3. CS-VG120KE ( INDOOR UNIT ) 8.12. SLEEP MODE OPERATION 14.4. CU-VG120KE ( OUTDOOR UNIT ) 8.13. DELAY ON TIMER CONTROL 15 Printed Circuit Board 8.14. -
Page 3: Functions
CS-VG120KE / CU-VG120KE 2 Functions 2.1. REMOTE CONTROL... -
Page 4: Indoor Unit
CS-VG120KE / CU-VG120KE 2.2. INDOOR UNIT... - Page 5 CS-VG120KE / CU-VG120KE...
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Page 6: Outdoor Unit
CS-VG120KE / CU-VG120KE 2.3. OUTDOOR UNIT... -
Page 7: Product Specifications
CS-VG120KE / CU-VG120KE 3 Product Specifications Unit CS-VG120KE CU-VG120KE Cooling Capacity 3.45(0.90 3.85) Btu/h 11,800 (3,100 13,100) Heating Capacity 4.8 (0.78 6.30) Btu/h 14,300 (2,700 20,500) Moisture Removal Pint/h Power Source Phase Single Cycle Airflow Method Air Volume Indoor Air(Lo) m / min(cfm) Cooling ;... - Page 8 CS-VG120KE / CU-VG120KE Unit CS-VG120KE CU-VG120KE Air Filter Material style Honeycomb Capacity Control Expansion valve Fan motor Capacitor µF,VAC 1.8µF,400VAC ∙ Specifications are subject to change without notice for further improvement.
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Page 9: Dimensions
CS-VG120KE / CU-VG120KE 4 Dimensions 4.1. CS-VG120KE (INDOOR UNIT) -
Page 10: Cu-Vg120Ke (Outdoor Unit)
CS-VG120KE / CU-VG120KE 4.2. CU-VG120KE (OUTDOOR UNIT) -
Page 11: Refrigeration Cycle Diagram
CS-VG120KE / CU-VG120KE 5 Refrigeration Cycle Diagram INDOOR OUTDOOR HEAT EXCHANGER DRYER TEMP. SENSOR 2-WAY EXPANSION VALVE VALVE INTAKE AIR HEAT TEMP. EXCHANGER SENSOR OUTDOOR AIR TEMP. TEMP. SENSOR SENSOR HEAT EXCHANGER HEAT EXCHANGER (EVAPORATOR) (CONDENSER) 4-WAY VALVE 3-WAY VALVE DISCHARGE TEMP. -
Page 12: Block Diagram
6 Block Diagram... -
Page 13: Wiring Diagram
CS-VG120KE / CU-VG120KE 7 Wiring Diagram Remarks: : BLUE : BROWN : BLACK : WHITE : RED : ORANGE : PINK : YELLOW : YELLOW / GREEN : GRAY Resistance of Outdoor Fan Motor Windings. CONNECTION CWA92269(Ω) 227.6 YELLOW - BLUE YELLOW - BROWN 68.2... -
Page 14: Operation Details (Functions)
CS-VG120KE / CU-VG120KE 8 Operation Details (FUNCTIONS) 8.1. TEMPERATURE SHIFT Once the operation starts, the remote control setting temperature will be shifted internally based on the setting fan speed and outdoor air temperature. In addition, if Sleep Mode or Powerful Mode are set, the temperature shift will be carried out. -
Page 15: Cooling Operation
CS-VG120KE / CU-VG120KE 8.2. COOLING OPERATION 8.2.1. Room Temperature Control 1. When the remote control setting temperature is less than 24°C. 2. When the remote control setting temperature is 24°C and above. ∙ Compressor OFF temperature = Compressor ON temperature. - Page 16 CS-VG120KE / CU-VG120KE 8.2.2. Deodorizing Control ∙ This control is available during automatic fan speed for Cooling and Soft Dry Operation. It is not available during anti-freezing control. ∙ When the compressor is in operation, the deodorizing status starts from 1 → 2 → 3.
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Page 17: Soft Dry Operation
CS-VG120KE / CU-VG120KE 8.3. SOFT DRY OPERATION 8.3.1. Room Temperature Control At the start of operation, cooling operation is running until the intake air temperature is 0.5°C higher than internal setting temperature, then the operation will shift to Soft Dry with indoor fan speed SLo. -
Page 18: Heating Operation
CS-VG120KE / CU-VG120KE 8.4. HEATING OPERATION 8.4.1. Room Temperature Control ∙ During heating operation, the room temperature control depends on intake air temperature and internal setting temperature. Basically it can be divided into 2 periods as shown below: 1. When indoor fan speed is Medium or above. - Page 19 CS-VG120KE / CU-VG120KE ∙ Compressor OFF temperature = compressor ON temperature. ∙ The operation frequency changes every 30 seconds. ∙ When the difference of the intake air temperature and Internal setting temperature is -1.5°C or more, compressor will operate at Fh continuously for 3 minutes and then change over to Fhmax.
- Page 20 CS-VG120KE / CU-VG120KE 2. Hot Start ∙ At the start of heating operation, the indoor fan stops and compressor operates at Fhmax frequency (124Hz). This is to heat up the indoor heat exchanger in order to avoid cold air discharged.
- Page 21 CS-VG120KE / CU-VG120KE Deice Operation Time Chart ∙ Compressor frequency is set at 73Hz when the deice operation starting signal is generated. ∙ 150 seconds later deice operation starting signal is generated, indoor fan, outdoor fan, 4-way valve are turned off and compressor operates at 95Hz for 30 seconds.
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Page 22: Fan Operation
CS-VG120KE / CU-VG120KE 8.5. FAN OPERATION This operation is to enable the fan operation without compressor running. Timer operation is valid for fan operation. 8.6. AUTOMATIC OPERATION When the Automatic mode is selected, the operation mode is decided in accordance to remote control setting temperature, intake air temperature and outdoor air temperature. - Page 23 CS-VG120KE / CU-VG120KE Setting temp °C Note: Base temperature for T1 is 29 °C 18 and below 19 - 22 Base temperature for T2 is 27 °C 23 - 26 Base temperature for T3 is 21 °C 27 and above ∙...
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Page 24: Indoor Fan Speed Control
CS-VG120KE / CU-VG120KE 8.7. INDOOR FAN SPEED CONTROL Voltage Cooling Soft Remarks Heating Remarks speed Supply to Manual Auto MAnual Auto Fan Motor DC(V) ∙ hot Start Control ∙ Deodorizing control ∙ Slo:Hot Start Control 20.4 ∙ Sleep Mode ∙ Auto operation mode ∙... - Page 25 CS-VG120KE / CU-VG120KE Voltage Cooling Soft Remarks Heating Remarks speed Supply to Manual Auto MAnual Auto Fan Motor DC(V) ∙ Manual Fan + Powerful 32.6 ∙ On Timer preparatory operation + Manual Fan + Powerful ∙ Test Run 36.0 ∙ SSHI:Maximum Capacity...
- Page 26 CS-VG120KE / CU-VG120KE 1. Cooling Automatic Fan Speed The Automatic Fan Speed for cooling operation is shown as below: a. When Automatic Fan Speed is selected b. When Automatic Fan Speed and Powerful Mode are selected Note: The Fan Speed will change every 10 seconds and it will be repeated from a to h every 80 seconds.
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Page 27: Outdoor Fan Control
CS-VG120KE / CU-VG120KE 8.8. OUTDOOR FAN CONTROL ∙ Outdoor fan motor is controlled with 2 speeds. Fan is in operation when the compressor starts operation and stops 30 seconds after compressor stops operation. (During 80 seconds, Fan speed is at low). -
Page 28: Quiet Operation
CS-VG120KE / CU-VG120KE 8.10. QUIET OPERATION The purpose of this control is to reduce indoor operating noise. Indoor fan speed is set to Lo- when the following conditions occur. ∙ Indoor fan speed is set at Low ∙ Indoor heat exchanger temperature rises to 17°C or above ∙... -
Page 29: Sleep Mode Operation
CS-VG120KE / CU-VG120KE 8.12. SLEEP MODE OPERATION 1. Cooling Operation/Soft Dry Operation ∙ When the sleep button is pressed, the remote control setting temperature will increase 0.5°C after 1 hour or when the remote control setting temperature is reached. After another hour, 0.5°C will be increased again. -
Page 30: Delay On Timer Control
CS-VG120KE / CU-VG120KE 8.13. DELAY ON TIMER CONTROL ∙ When the Delay On Timer is set by using remote control, the unit will start to operate slightly earlier before the set time, so that the room will nearly reach the set temperature by the On Timer set time. -
Page 31: Power Monitor Display
CS-VG120KE / CU-VG120KE 8.15. POWER MONITOR DISPLAY Power Monitor LED lights on when the compressor is in operation. The number of the LED lights on is in accordance to the compressor operating frequency. Display A, B A, B, C A, B, C, D A, B, C, D, E Cooling &... -
Page 32: Operation Details (Protection)
CS-VG120KE / CU-VG120KE 9 Operation Details (PROTECTION) 9.1. PROTECTION CONTROL FOR ALL OPERATIONS 1. Time Delay Safety Control ∙ The compressor is not restarted for 3 minutes after stop of compressor. 2. 30 Second Forced Operation ∙ Once the compressor is ON, it will not turn OFF for 30 seconds. However, it is turned off by remote control or Automatic switch. - Page 33 CS-VG120KE / CU-VG120KE Comp. Frequency 73Hz 92Hz Total Running 1.51 A and 1.51 A and Current 2.15 A 2.30 A Indoor Heat Exchanger Temp. or above or below Operation Cooling / Soft Dry Heating Note: The above conditions are not valid during Deice operation.
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Page 34: Protection Control For Cooling & Soft Dry
CS-VG120KE / CU-VG120KE 9.2. PROTECTION CONTROL FOR COOLING & SOFT DRY 1. Anti-Freezing Control ∙ When the temperature of the indoor heat exchanger becomes low, the compressor operating frequency is reduced and stopped when the temperature falls to lower than 2°C continuously for 6 minutes. This is to prevent freezing of indoor heat exchanger. - Page 35 CS-VG120KE / CU-VG120KE 4. High Pressure Control at Minimum Frequency Control ∙ When the outdoor air temperature increases to 38.6°C, compressor operating frequency reduces to minimum of 37Hz. Compressor operating frequency will resume to normal when outdoor air temperature decreases to 37.8°C.
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Page 36: Protection Control For Heating Operation
CS-VG120KE / CU-VG120KE 9.3. PROTECTION CONTROL FOR HEATING OPERATION 1. Intake Air Temperature Control ∙ When the intake air temperature is 10°C or above and remote control setting fan speed is less than Medium, the compressor operates at 92Hz. 2. Outdoor Air Temperature Control ∙... -
Page 37: Installation And Servicing Air Conditioner Using R410A
CS-VG120KE / CU-VG120KE 10 Installation And Servicing Air Conditioner Using R410A 10.1. OUTLINE 10.1.1. About R410A Refrigerant 1. Converting air conditioners to R410A Since it was declared in 1974 that chlorofluorocarbons (CFC), hydro chlorofluorocarbons (HCFC) and other substances pose a destructive danger to the ozone layer in the earth´s upper stratosphere (20 to 40 km above the earth), measures have been taken around the world to prevent this destruction. -
Page 38: Tools For Installing/Servicing Refrigerant Piping
CS-VG120KE / CU-VG120KE conventional refrigerating machine oils. Also, these synthetic oils will degrade if mixed with mineral oil or alkylbenzene, causing clogging in capillary tubes or compressor malfunction. Do not mix them under any circumstances. 10.1.2. Safety Measures When Installing/Servicing Refrigerant Piping Cause the gas pressure of R410A is approximately 1.6 times as high as that of R22, a mistake in installation or servicing could... - Page 39 CS-VG120KE / CU-VG120KE 10.2.2. R410A Tools 1. Copper tube gauge for clearance adjustment (used when flaring with the conventional flaring tool (clutch type)) ∙ This gauge makes it easy to set the clearance for the copper tube to 1.0-1.5 mm from the clamp bar of the flaring tool.
- Page 40 CS-VG120KE / CU-VG120KE 5. Charging hose ∙ The pressure resistance of the charging hose has been raised to match the higher pressure of R410A. The hose material has also been changed to suit HFC use, and the size of the fitting has been changed to match the manifold ports.
- Page 41 CS-VG120KE / CU-VG120KE 9. Refrigerant cylinders ∙ The R410A cylinders are labeled with the refrigerant name, and the coating color of the cylinder protector is pink, which is the color stipulated by ARI of the U.S. ∙ Cylinders equipped with a siphon tube are available to allow the cylinder to stand upright for liquid refrigerant charging.
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Page 42: Refrigerant Piping Work
CS-VG120KE / CU-VG120KE 10.3. REFRIGERANT PIPING WORK 10.3.1. Piping Materials It is recommended that you use copper and copper alloy jointless pipes with a maximum oil adherence of 40 mg/10 m. Do not use pipes that are crushed, deformed, or discolored (especially the inside surface). If these inferior pipes are used, impurities may clog the expansion valves or capillaries. - Page 43 CS-VG120KE / CU-VG120KE Table 12 R22 flaring dimensions Nominal Outside Wall thickness A(mm) diameter diameter (mm) R410A flaring Conventional flaring tool (mm) tool, clutch type Clutch type Wing-nut type 6.35 0 - 0.5 0.5 - 1.0 1.0 - 1.5 9.52 0 - 0.5...
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Page 44: Installation, Transferring Servicing
CS-VG120KE / CU-VG120KE b. Take special care when doing piping work on rainy days. The entering of moisture will degrade the refrigerating machine oil, and lead to malfunctions in the equipment. c. Complete all pipe connections in as short a time as possible. If the pipe must be left standing for a long time after removing the seal, it must be thoroughly purged with nitrogen, or dried with a vacuum pump. - Page 45 CS-VG120KE / CU-VG120KE ∙ Press the TEST RUN button on the indoor unit, and allow preliminary operation for 5-6 minutes. (TEST RUN mode) ∙ After stopping the operation, let the unit sit for about 3 minutes, then close the 2-way valve by turning the valve stem in the clockwise direction.
- Page 46 CS-VG120KE / CU-VG120KE 7. Open the valve of the refrigerant cylinder, then open the charging valve slightly and close it. Next, press the check valve of the manifold gauge and purge the air. (2)(4) (Watch the liquid refrigerant closely at this point.) 8.
- Page 47 CS-VG120KE / CU-VG120KE 6. After taking the steps above, keep the nitrogen gas flowing until the piping cools down to a certain extent (i.e. temperature at which pipes are touchable with finger). 7. Completely remove the flux after brazing. Fig. 14 Prevention of Oxidation during Brazing * Cautions during brazing 1.
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Page 48: Installation Information
CS-VG120KE / CU-VG120KE 11 Installation Information 11.1. ATTACHED ACCESSORIES 11.2. SELECT THE BEST LOCATION 11.2.1. INDOOR UNIT ∙ There should not be any heat source or steam near the unit. ∙ There should not be any obstacles blocking the air circulation. -
Page 49: Indoor/Outdoor Unit Installation Diagram
CS-VG120KE / CU-VG120KE 11.3. INDOOR/OUTDOOR UNIT INSTALLATION DIAGRAM... -
Page 50: Servicing Information
CS-VG120KE / CU-VG120KE 12 Servicing Information 12.1. TROUBLESHOOTING 12.1.1. RATED FREQUENCY OPERATION During troubleshooting and servicing, rated compressor operating frequency must be obtained in order to check the specification and technical data. Below are the methods used to obtain rated compressor operating specification. - Page 51 CS-VG120KE / CU-VG120KE 12.1.2. TROUBLESHOOTING AIR CONDITIONER 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 or a fan.
- Page 52 CS-VG120KE / CU-VG120KE Relationship between the condition of the air conditioner and pressure and electric current Condition of the air conditioner Cooling Mode Heating Mode Low Pressure High Pressure Electric current Low Pressure High Pressure Electric current during operation during operation...
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Page 53: Self Diagnosis Display
CS-VG120KE / CU-VG120KE 12.2. SELF DIAGNOSIS DISPLAY The diagnostic display can be seen on the receiver of the Front Grille. ∙ When an abnormality occurs, the unit automatically stops, and the TIMER LED blinks to indicate a malfunction. At the same time, the type of abnormality will be indicated on the receiver as shown in the diagram below. - Page 54 CS-VG120KE / CU-VG120KE Diagnosis display Abnormality/Protection control Abnormality Temporary Primary location to verify Judgement operation ∙ Internal/external cable connections Indoor/outdoor abnormal 1 min after starting communication operation ∙ Indoor/Outdoor PCB ∙ Intake air temperature sensor (defective Indoor intake air temperature sensor...
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Page 55: Remote Control
CS-VG120KE / CU-VG120KE 12.3. REMOTE CONTROL 12.3.1. 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 happens, 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 56: Disassembly Of Parts
CS-VG120KE / CU-VG120KE 12.4. DISASSEMBLY OF PARTS 12.4.1. Inspection points for the Indoor Electronic Controller The Electronic Controller, a signal Receiver, a power monitor, as indicator and a self diagnosis indicator display can be seen by removing the Front Grille and Control Board Cover, as shown in the Fig. 1. - Page 57 CS-VG120KE / CU-VG120KE 3. Remove the Fan Motor Loosen the Fan Motor securing screw at the junction with Cross Flow Fan. (Fig. 5) Fig. 5 Remove the particular piece and the Fan Motor can be taken off as shown in Fig. 6 and 7.
- Page 58 CS-VG120KE / CU-VG120KE 4. To fix the Indoor Fan Motor, ensure that the Fan Motor securing screw is positioned at the rear end and the Fan Motor lead wire is positioned parallel to the Fan Motor. (Fig. 8) Fig. 8 12.4.3.
- Page 59 CS-VG120KE / CU-VG120KE 3. Pull off the Bearing at the left of the Cross Flow Fan. (Fig. 11) Fig. 11 4. Take off the mounting tab on the left side of the Heat Exchanger, pull the Heat Exchanger forward (left side) and remove the Cross Flow Fan.
- Page 60 CS-VG120KE / CU-VG120KE 12.4.5. Removal procedure of Main and Power Electronic Controller 1. Release all connectors which are connected to the electronic controller. 2. Pull the electronic controller towards you as shown in Fig. 14. Fig. 14 3. Remove the connector as shown in Fig. 15.
- Page 61 CS-VG120KE / CU-VG120KE 12.4.6. Inspection Method for the Outdoor Unit 1. Remove the control box. (Two screws) 2. Remove the particular plate. 3. Remove the control box cover. 4. Remove the front panel. (Four screws) (Fig.17) WARNING: ∙ Be sure to return the wiring to its original position.
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Page 62: Technical Data
CS-VG120KE / CU-VG120KE 13 Technical Data 13.1. OPERATION CHARACTERISTICS... -
Page 63: Electronic Circuit Diagram
CS-VG120KE / CU-VG120KE 14 Electronic Circuit Diagram 14.1. HOW TO USE ELECTRONIC CIRCUIT DIAGRAM Before the circuit diagram, read the following carefully. Voltage measurement voltage has been measured with a digital tester when the indoor fan is set at high fan speed under the following conditions without setting the timer. -
Page 64: Timer Table
CS-VG120KE / CU-VG120KE 14.2. TIMER TABLE 14.2.1. Indoor Name Time Test Mode (When test point Short- circulated) 4 way valve abnormality 4 min. 2.4 sec. Outdoor air temp. for Hz No. detection 30 min. Anti-dew formation control 20 min. Anti-freezing Control 6 min. -
Page 65: Cs-Vg120Ke ( Indoor Unit )
CS-VG120KE / CU-VG120KE 14.3. CS-VG120KE ( INDOOR UNIT ) CS-VG120KE ELECTRONIC CONTROLLER IC101 (PC BOARD/POWER) REGULATOR CU-VG120KE R120 27Ω Appnox CWA74983 3250 C109 C114 µ 0.01 µ C113 C110 µ µ L101 C108 C107 INDOOR UNIT µ R122 µ R103 0.33Ω... - Page 66 CS-VG120KE / CU-VG120KE ELECTRONIC CONTROLLER (PC BOARD/MAIN) INDOOR REMOTE UNIT REMOCON CWA741264 CONTROL 430Ω 430Ω 430Ω OPEN OPEN µ 0.01 µ 0.01 REMOTE CONTROL SHORT SHORT CHECK PIN (TEST) (5V) BUSY SHORT TEST MODE RECEIVER 6.3V µ µ 100K CWA74919 510Ω...
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Page 67: Cu-Vg120Ke ( Outdoor Unit )
CS-VG120KE / CU-VG120KE 14.4. CU-VG120KE ( OUTDOOR UNIT ) CU-VG120KE CAPACITOR (ORG)TR+ OUTDOOR (WHT)TR- DC about 280V UNIT DIODE 400V A54S25VB60 µ 1100 (RED) (RED) 31137 (XH-3) (XH-3) REACTOR 240V CWA30199 CN-U CN-U CWA42135 µ 42134 5.6K µ DIODE µ... - Page 68 CS-VG120KE / CU-VG120KE...
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Page 69: Printed Circuit Board
CS-VG120KE / CU-VG120KE 15 Printed Circuit Board 15.1. CS-VG120KE ( INDOOR UNIT ) - Page 70 CS-VG120KE / CU-VG120KE...
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Page 71: Cu-Vg120Ke ( Outdoor Unit )
CS-VG120KE / CU-VG120KE 15.2. CU-VG120KE ( OUTDOOR UNIT ) POWER SUPPLY... - Page 72 CS-VG120KE / CU-VG120KE MAIN INDICATOR...
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Page 73: Exploded View & Replacement Parts List
CS-VG120KE / CU-VG120KE 16 Exploded View & Replacement Parts List 16.1. CS-VG120KE 16.1.1. Exploded View... - Page 74 CS-VG120KE / CU-VG120KE 16.1.2. Replacement Parts List CS-VG120KE DESCRIPTION & NAME Q’TY Remarks CWD50C202 CHASSY COMPLETE G G G G CWA98244 FAN MOTOR CWH02C053 CROSS-FLOW FAN COMPLETE CWH4580304 SCREW-CROSSFLOW FAN CWH64K007 BEARING ASS’Y CWB30C211 EVAPORATOR CWT01C2103 TUBE ASS’Y COMPLETE G G G G CWT25086 FLARE NUT (1/4”)
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Page 75: Cu-Vg120Ke
CS-VG120KE / CU-VG120KE 16.2. CU-VG120KE 16.2.1. Exploded View... - Page 76 CS-VG120KE / CU-VG120KE 16.2.2. Replacement Parts List Ref. No. CU-VG120KE DESCRIPTION & NAME Q’TY Remarks CWD50K620AX CHASSY COMPLETE CWD54189 FAN MOTOR BRACKET G G G G CWA92269 MOTOR CWH03K021X PROPELLER FAN CWH56053 G G G G CWB092028 COMPRESSOR CWB13038 ACCUMLATOR...
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Page 77: Electronic Parts List
CS-VG120KE / CU-VG120KE 17 Electronic Parts List ( Model:CWA742140 ) POWER PCB ( Model:CWA742134 ) OUTDOOR PCB SYMBOL PART NO. DESCRIPTION & REMA SYMBOL PART NO. DESCRIPTION & REMA NAME NAME BZ101 A48004 BUZZER A40178 CURRENT TRANSFORMER D101 A54MA165T5 DIODE... - Page 78 MEMO :...
- Page 79 MEMO :...
- Page 80 Printed in Japan MS1299SO...
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