Logitech OB450 REVISED EDITION-B, MSZ-A09NA Electromagnetic noise enters into TV sets or radios

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E Electromagnetic noise enters into TV sets or radios

Is the unit grounded?

Yes

Is the distance between the antennas and the indoor unit within 9.91 ft., or is the distance between the antennas and the outdoor unit within 9.91 ft.?

No

Is the distance between the TV sets or radios and the indoor unit within 3.28 ft., or is the distance between the TV sets or radios and the outdoor unit within 9.91 ft.?

No

No

Yes

Yes

Ground the unit.

Extend the distance between the antennas and the indoor unit, and/or the antennas and the

outdoor unit.

Extend the distance between the TV sets and/or radios and the indoor unit, or the TV sets or

radios and the outdoor unit.

Are the antennas damaged? Is the coaxial cable damaged?

Is there any poor contact in the anten- Yes na wiring?

No

 

Is the indoor/outdoor connecting wire of

 

the air conditioner and the wiring of the

Yes

antennas close?

No

 

Replace or repair the antenna.

Replace or repair the coaxial cable.

Extend the distance between the indoor/outdoor connecting wire of the air conditioner and the wir-

ing of the antennas.

Even if all of the above conditions are fulfilled, the electromagnetic noise may enter, depending on the electric field strength or the installation condition (combination of specific conditions such as antennas or wiring).

Check the followings before asking for service.

1.Devices affected by the electromagnetic noise TV sets, radios (FM/AM broadcast, shortwave)

2.Channel, frequency, broadcast station affected by the electromagnetic noise

3.Channel, frequency, broadcast station unaffected by the electromagnetic noise

4.Layout of ;

indoor/outdoor unit of the air conditioner, indoor/outdoor wiring, grounding wire, antennas, wiring from antennas, receiver

5.Electric field intensity of the broadcast station affected by the electromagnetic noise

6.Presence or absence of amplifier such as booster

7.Operation condition of air conditioner when the electromagnetic noise enters in

1)Turn OFF the power supply once, and then turn ON the power supply. In this situation, check for the electromagnetic noise.

2)Within 3 minutes after turning ON the power supply, press OPERATE/STOP (ON/OFF) button on the remote controller for power ON, and check for the electromagnetic noise.

3)After a short time (3 minutes later after turning ON), the outdoor unit starts running. During operation, check for the elec- tromagnetic noise.

4)Press OPERATE/STOP (ON/OFF) button on the remote controller for power OFF, when the outdoor unit stops but the indoor/outdoor communication still runs on. In this situation, check for the electromagnetic noise.

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Contents Contents Revised EDITION-CMSZ-A24NA MSY-A24NAMSZ-A09NA MSZ-A12NA MSZ-A15NA MSZ-A17NA MSY-A15NA MSY-A17NA AccessoriesPart Names and Functions MSZ-A24NA MSY-A24NASpecification Operating Range Outlet AIR Speed and Coverage RangeMSZ-A12NA MSY-A17NA MSZ-A15NA MSZ-A17NA Outlines and DimensionsMSZ-A09NA MSY-A15NA Unit inchMSZ-A24NA Wiring Diagram MSZ-A15NA MSY-A15NA Refrigerant System DiagramMSZ-A09NA MSZ-A12NA MSZ-A17NA MSY-A17NAHow to modify the remote controller P.C. board Service FunctionsTimer Short Mode P.C. Board Modification for Individual OperationAuto Restart Function TroubleshootingHow to release Auto Restart Function OperationInformation for Multi System AIR Conditioner Troubleshooting procedureHow to replace batteries Outdoor Unit MXZ seriesFailure Mode Recall Function Indoor unit failure mode table Instruction of Troubleshooting StartTroubleshooting Check Table 15/17Trouble Criterion of Main Parts MXZ typeTroubleshooting Flow Check of indoor fan motorMSZ-A24NA MSY-A24NA MSZ-A09/12/15/17NA MSY-A15/17NAIndoor electronic control P.C.Board How to check miswiring and serial signal error Electromagnetic noise enters into TV sets or radios Indoor electronic control P.C. board Test point diagram and voltagePower monitor receiver P.C. board SW P.C. boardMSZ-A24NA MSY-24NA Display P.C. board Receiver BoardDisassembly Instructions Removing the panel PhotoOperating Procedure Photos Removing the electrical box PhotoRemoving the horizontal vane motor unit Photo Removing the indoor fan motor and the line flow fan PhotoRemoving the electronic control P.C. board, the receiver MSZ-A24NA MSY-A24NA Operating Procedure PhotosRemoving the front panel Board and the display P.C. boardRemoving the vane motor Removing the line flow fan and the indoor fan motorParts List Accessory and Remote ControllerRoom Temperature Nozzle AssemblyPower Monitor Receiver Board Holder Switch HolderUnion GAS AIR Cleaning Filter ANTI-ALLERGY Enzyme FilterIndoor Heat Exchanger Union LiquidSee Indoor Unit Functional Parts and Electrical Parts MAC-2300FT Remote KM06C Catechin AIR Filter Right AIR Cleaning MAC-415FT-EMSZ-A MSY-A Controller KM07LControl P.C CoverElectronic Indoor CoilE12 815 Indoor HeatExchanger E12 155 Ø1/2 E12 151Catechin AIR Filter CatchScrew CAP PC/ SETVane Motor Vertical AssemblyRemote Controller KM06D Vane Motor HorizontalAIR Cleaning Filter ANTI-ALLERGY Enzyme Filter Microprocessor Control Indoor Unit Display SectionHeat Operation MSZ Cool OperationDRY Operation FAN Operation MSYMode selection Auto Change Over ··· Auto Mode Operation MSZFuzzy control MSZ-A24 MSY-A24 Auto Vane OperationMSZ-A09/12/15/17 MSY-A15/17 UpwardVertical vane MSZ-A24, MSY-A24 3 4 Swing 5Timer Operation Program TimerMSZ-ANA- MSY-ANA Changing temperature indication F/CEMERGENCY/TEST Operation Made in Japan

MSZ-A09NA, OB450 REVISED EDITION-B specifications

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