Panasonic CS-MKS24NKU Noise Malfunction and Electromagnetic Interference, Trouble, Correction

Page 42

8-5. Noise Malfunction and Electromagnetic Interference

An inverter A/C operates using pulse signal control and high frequencies. Therefore, it is susceptible to the effects of external noise, and is likely to cause electromagnetic interference with nearby wireless devices.

A noise filter is installed for ordinary use, preventing these problems. However, depending on the installation conditions, these effects may still occur. Please pay attention to the points listed below.

(1) Noise malfunction

This refers to the application of high-frequency noise to the signal wires, resulting in abnormal signal pulses and malfunction.

Locations most susceptible to noise

 

Trouble

 

Correction

 

 

 

 

 

1.

Locations near broadcast stations where

Either of the following trouble may occur.

 

(The fundamental concept is to

 

there are strong electromagnetic waves

1.

The unit may stop suddenly during

make the system less susceptible to noise.)

 

 

 

- Insulate for noise or

2.

Locations near amateur radio (short wave)

 

operation.

 

 

stations

2.

Indicator lamps may flicker.

 

distance from the noise source. -

3.

Locations near electronic sewing machines

 

 

1.

Use shielded wires.

 

and arc-welding machines

 

 

2.

Move unit away from the noise source.

 

 

 

 

 

 

 

 

 

 

(2) Electromagnetic interference

This refers to noise generated by high-speed switching of the microcomputer and compressor. This noise radiates through space and returns to the electric wiring, affecting any wireless devices (televisions, radios, etc.) located nearby.

Locations most susceptible to noise

Trouble

 

Correction

 

 

 

 

1.

A television or radio is located near the

1. Noise appears in the television picture,

1. Select a separate power source.

 

A/C and A/C wiring.

or the picture is distorted.

2.

Keep the A/C and A/C wiring at least 1 meter

 

 

 

2.

The antenna cable for a television or

2. Static occurs in the radio sound.

 

away from wireless devices and antenna cables.

 

radio is located close to the A/C and A/C

 

3.

Change the wireless device’s antenna to a high-

 

wiring.

 

 

 

 

sensitivity antenna.

3.

Locations where television and radio

 

 

 

4.

Change the antenna cable to a BS coaxial cable.

 

signals are weak.

 

 

 

5.

Use a noise filter (for the wireless device).

 

 

 

 

 

 

6.

Use a signal booster.

 

 

 

 

 

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Contents TECHNICAL & SERVICE MANUAL INDOOR UNIT CS-MKS7NKU CS-MKS9NKU CS-MKS12NKU CS-MKS18NKUCS-MKS24NKU DC INVERTER MULTI-SYSTEM AIR CONDITIONERSAFETY PRECAUTIONS If refrigerant gas leaks during the work, ventilate the room 4. REFRIGERANT FLOW DIAGRAM Table of Contents2. SPECIFICATIONS 8. TROUBLESHOOTING BEFORE CALLING FOR SERVICEAPPLICABLE MULTI-OUTDOOR UNITS Indoor Air Intake Temp 1. OPERATING RANGETemperature Outdoor Air Intake TempFeatures SPECIFICATIONSUnit Specifications Dimensions & WeightType FeaturesDimensions & Weight Voltage RatingType FeaturesDimensions & Weight Voltage RatingType FeaturesDimensions & Weight Voltage RatingType FeaturesDimensions & Weight Voltage RatingType FeaturesDimensions & Weight Voltage RatingType FeaturesDimensions & Weight Voltage RatingType FeaturesDimensions & Weight Voltage RatingType FeaturesDimensions & Weight Voltage RatingType Control PCB 2-2. Major Component Specifications2-2-1. Indoor Unit Fan MotorIndoor Unit CS-MKS9NKU Indoor Unit CS-MKS12NKU Indoor Unit CS-MKS18NKU Indoor Unit CS-MKS24NKU 2-3. Other Component Specifications Resistance k ohmTemperature F C 3. DIMENSIONAL DATA CS-MKS9NKU CS-MKS12NKUCS-MKS24NKU CS-MKS18NKU4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram5-1. Air Throw Distance Charts 5. PERFORMANCE DATACS-MKS9NKU Room air temp. 80F 26.7C Cooling Cooling Cooling ASSY 6-1. Electric Wiring Diagrams6. ELECTRICAL DATA LAMPEmergency operation 7. FUNCTIONS7-1. Operation Functions SENSOR DRYNIGHT SETBACK HIGH POWERTimer backup Lamp colors7-2. Protective Functions Freeze prevention8-2. Method of Self-Diagnostics 8. TROUBLESHOOTING BEFORE CALLING FOR SERVICE8-1. Precautions before Performing Inspection or Repair PROCEDUREDIAGNOSIS CONTENTS INDOOR UNIT 1 OPERATION lamp 2 TIMER lamp 3 QUIET lampOPERATION button REMOTE CONTROL receiver INDICATION ON INDOOR UNITCheck the power voltage Blown 2 If the self-diagnostics function fails to operateNo indicators illuminate and the indoor fan does not rotate Check the indoor unit Is the fuse blown?8-3. Checking the Indoor and Outdoor Units T-RUN Test run compressor and fan motor turn ON3 How to Identify a Serial Communication Error Timer3-2 Condition E12 8-4. Trouble Diagnosis of Fan Motor 8-4-1. Indoor Fan MotorTrouble 8-5. Noise Malfunction and Electromagnetic InterferenceLocations most susceptible to noise CorrectionPage APPENDIX A Operating Instructions CS-MKS7NKU CS-MKS9NKU CS-MKS12NKUCU-3KS19NBU CU-4KS24NBU CU-4KS31NBU Operating Instructions Split System Air ConditionerCS-MKS7NKU CS-MKS9NKU CS-MKS12NKU Model No Indoor UnitsSAFETY PRECAUTIONS FEATURESCONTENTS PRODUCT INFORMATIONINSTALLATION LOCATION SAFETY INSTRUCTIONSELECTRICAL REQUIREMENTS Refrigerant gas leakage may cause fire Remote Controller NAMES OF PARTSAir Intakes INDOOR UNIT Air Outlet Remote Controller Drain Hose Refrigerant Tubes OUTDOOR UNIT Air OutletUNIT DISPLAY AND OPERATION BUTTON REMOTE CONTROLLER DISPLAY REMOTE CONTROLLER REMOTE CONTROLLER CONTINUED SWEEPUSING THE REMOTE CONTROLLER USING THE REMOTE CONTROLLER CONTINUED OPERATION WITH THE REMOTE CONTROLLER 1. OperationOPERATION WITH THE REMOTE CONTROLLER CONTINUED 2. Adjusting the Fan Speed3. Fan Only In Cooling and DRY Mode and 4. Night Setback ModeSetting Night Setback Mode is used for saving energy6. HIGH POWER Mode 5. QUIET Mode‘‘DRY’’ Operation Remote ControllerSPECIAL REMARKS Cooling OperationSETTING THE TIMER 1. How to set the present timeSETTING THE TIMER CONTINUED REPEAT timerSetting procedure USING THE 1-HOUR OFF TIMERTIPS FOR ENERGY SAVING Cancellation procedureADJUSTING THE AIRFLOW DIRECTION OPERATION WITHOUT THE REMOTE CONTROLLER CARE AND CLEANINGfilter CARE AND CLEANING CONTINUEDHow to remove the filter 1. Grasp both ends of the air Groove Pin Air intake grilleWIRED REMOTE CONTROLLER When using a footstool or the like, be careful not to let it tip overWashing the grille with water Trouble TROUBLESHOOTING BEFORE CALLING FOR SERVICEOPERATING RANGE Possible CauseIndoor Unit SPECIFICATIONSModel No Outdoor UnitAPPENDIX B Operating Instructions CS-MKS18NKU CS-MKS24NKUModel No CS-MKS18NKUCS-MKS24NKU Indoor UnitsSAFETY PRECAUTIONS FEATURESCONTENTS Simple One-touch Remote ControllerINSTALLATION LOCATION SAFETY INSTRUCTIONSELECTRICAL REQUIREMENTS Refrigerant gas leakage may cause fire NAMES OF PARTS Air Intakes INDOOR UNIT Air Outlet Remote Controller Drain HoseRemote Controller Refrigerant Tubes OUTDOOR UNIT Air OutletUNIT DISPLAY AND OPERATION BUTTON REMOTE CONTROLLER DISPLAY REMOTE CONTROLLER REMOTE CONTROLLER CONTINUED USING THE REMOTE CONTROLLER REMOTE CONTROLLER CONTINUEDUSING THE REMOTE CONTROLLER CONTINUED OPERATION WITH THE REMOTE CONTROLLER 1. OperationOPERATION WITH THE REMOTE CONTROLLER CONTINUED 2. Adjusting the Fan Speed3. Fan Only OPERATION WITH THE REMOTE CONTROLLER CONTINUED 4. Night Setback ModeOPERATION WITH THE REMOTE CONTROLLER CONTINUED 6. HIGH POWER Mode5. QUIET Mode ‘‘DRY’’ Operation Remote ControllerSPECIAL REMARKS Cooling OperationSETTING THE TIMER 1. How to set the present timeSETTING THE TIMER CONTINUED REPEAT timerCancellation procedure USING THE 1-HOUR OFF TIMERSetting procedure 2. Operation together with the DAILY ON/OFF REPEAT TimerADJUSTING THE AIRFLOW DIRECTION OPERATION WITHOUT THE REMOTE CONTROLLER Groove Pin Air intake grille Air intake grille WIRED REMOTE CONTROLLER CARE AND CLEANING CONTINUEDTrouble TROUBLESHOOTING BEFORE CALLING FOR SERVICEOPERATING RANGE Possible CauseIndoor Unit APPENDIX C INSTALLATION INSTRUCTIONS CS-MKS7NKU CS-MKS9NKU CS-MKS12NKU CS-MKS18NKU CS-MKS24NKUNOTE External diameter of service port R410A 5/16 INSTALLATION INSTRUCTIONS Split System Air ConditionerContents For Indoor UnitWhen Installing… SPECIAL PRECAUTIONSWhen Transporting In Case of Improper InstallationWhen Servicing Others‡ &KHFNFDUHIXOO\IRUOHDNVEHIRUHVWDUWLQJWKHWHVWUXQ 1-2. Accessories Supplied with Unit Table 1. General1-1. Tools Required for Installation not supplied obtaining wire. Also, check2-1. Indoor Unit 2. Installation Site Selection1-5. Additional Materials Required for Installation AVOID2-2. Embedding the Tubing and Wiring 3-1. Remove the Rear Panel from the Unit 3. How to Install the Indoor Unittrical wiring or conduits are 3-2. Make a Holeb If Block, Brick, Concrete or Similar Type Wall 3-3. Install the Rear Panel on the Walla If Wooden Wall Fig. 13a3-4. Removing and Installing the Grille 3-4-1. Indoor unit types Fig. 16a-1 Fig. 16b-1 3-4-2. Indoor unit types CS-MKS18NKU, CS-MKS24NKUFig. 19b-1 Fig. 17a-1 Fig. 17b-13-6. Wiring Instructions General precautions on wiring 3-5. Shape the Indoor Side Tubing3-7. Wiring Instructions for Inter-unit Connections Fig. 26aFig. 26b b For Outdoor Unit  For solid core wiring or F-cable WARNING Loose wiring may cause the terminal to overheat or resultHow to connect wiring to the terminal a For Indoor Unit  For stranded wiringFig. 37a 3-8. Mounting Right-side tubing Fig. 37bDrain hose Switching drain hose and drain cap Left-side tubing Drain capTo unmount indoor unit Do not supply power to thetubing and wiring to the out 3-9. Drain Hose4. How to Test Run the Air Conditioner Fig. 59a Fig. 59bFig. 59c 5. Remote Controller Installation Position 6. Address Switch 6-1. Address Setting of the Remote Controller7. Connecting a Home Automation Device 8. Installation Check SheetPage DC1111-0
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