Mitsubishi Electronics MSY-A15NA, MSY-A24NA, MSY-A17NA Trouble criterion of main parts, MXZ type

Page 17

OPERATION INDICATOR Lighted

Blinking

Not lighted

·Flashing of OPERATION INDICATOR lamp (right-hand side lamp) indicates abnormality.

·OPERATION INDICATOR lamp (left-hand side lamp) is lighted.

No.

Abnormal

Operation indicator lamp

Symptom

 

point

 

 

 

MXZ type

Right lamp flash

Outdoor unit

1

Operation

 

operates but

 

indoor unit

mode

 

 

2.5-second OFF

does not

 

setting

 

 

 

operate.

Condition

The operation mode of the each indoor

unit is differently set to COOL(includes DRY) and HEAT at the same time, the operation mode of the indoor unit that has operated at first has the priority.

Correspondence

Unify the operation mode. Refer to outdoor unit service manual.

8-5. Trouble criterion of main parts

MSZ-A09NA MSZ-A17NA MSY-A15NA

MSZ-A12NA MSZ-A15NA MSZ-A24NA MSY-A17NA MSY-A24NA

Part name

Room temperature thermistor(RT11)

Indoor coil thermistor (RT12(MAIN), RT13(SUB))

Check method and criterion

Figure

Measure the resistance with a tester.

Refer to 8-7. "Test point diagram and voltage",

"Indoor electronic control P.C. board", the chart of thermistor.

Indoor fan motor(MF)

Check 8-6. A.

 

 

 

Horizontal vane

Measure the resistance between the terminals with a tester.

RED

 

(Part temperature 50° F ~ 86° F)

ROTOR

motor(MV)

 

 

YLW

 

MSZ-A09/12/15/17NA

Color of the lead wire

Normal

 

BRN

 

MSY-A15/17NA

 

BRN-other one

235 " ~ 255 "

 

 

 

ORN

GRN

 

 

 

Horizontal vane

Measure the resistance between the terminals with a tester.

RED

 

motor(MV1)

 

(Part temperature 50° F ~ 86° F)

ROTOR

Vertical vane

 

 

YLW

 

motor(MV2)

Color of the lead wire

Normal

 

BRN

 

MSZ-A24NA

BRN-other one

282 " ~ 306 "

 

 

MSY-A24NA

ORN

GRN

 

 

17

Image 17
Contents Revised EDITION-A ContentsTechnical Changes Part Names and Functions MSZ-A24NA MSY-A24NA AccessoriesMSZ-A09NA MSZ-A12NA MSZ-A15NA MSZ-A17NA MSY-A15NA MSZ-A24NA MSY-A17NA MSY-A24NASpecification Outlet AIR Speed and Coverage Range Operating RangeUnit inch Outlines and DimensionsMSZ-A09NA MSY-A15NA MSZ-A12NA MSY-A17NA MSZ-A15NA MSZ-A17NA MSZ-A24NA Wiring Diagram MSZ-A09NA MSZ-A12NA Refrigerant System DiagramMSZ-A15NA MSY-A15NA MSZ-A17NA MSY-A17NATimer Short Mode Service FunctionsHow to modify the remote controller P.C. board P.C. Board Modification for Individual OperationOperation TroubleshootingAuto Restart Function How to replace batteries Troubleshooting procedureInformation for Multi System AIR Conditioner Outdoor Unit MXZ seriesThose figures show about MSZ-A09/12/15/17 Failure mode recall functionIndoor unit failure mode table Operation Instruction of troubleshootingIndicates abnormalities Troubleshooting check tableMXZ type Trouble criterion of main partsCheck of indoor fan motor Troubleshooting flowCheck of remote controller and receiver P.C. board Indoor electronic control P.C.Board How to check mis-wiring and serial signal error Electromagnetic noise enters into TV sets or radios Power monitor receiver P.C. board Test point diagram and voltageIndoor electronic control P.C. board SW P.C. boardDisplay P.C. board Receiver Board MSZ-A24NA MSY-24NARemoving the panel Photo Disassembly InstructionsPhoto Removing the electrical box Operating Procedure PhotosRemoving the indoor fan motor and the line flow Photo Removing the horizontal vane motor unit PhotoFan Motor bandRemoving the front panel MSZ-A24NA MSY-A24NA Operating Procedure PhotosRemoving the electronic control P.C. board, the receiver Board and the display P.C. boardRemoving the line flow fan and the indoor fan motor Removing the vane motorAccessory and Remote Controller Parts ListSwitch Holder Nozzle AssemblyBearing Mount Sleeve BearingAIR Cleaning Filter ANTI-ALLERGY Enzyme Filter Catch Front Panel AssemblyScrew CAP GrilleIndoor Unit Functional Parts and Electrical Parts AIR Cleaning Filter ANTI-ALLERGY Enzyme Filter Catechin AIR Filter Right AIR Cleaning Filter MAC-415FT-E Qty/unit Part name RoHSE12 751 E12 A54 235E12 A56 RoHS Part name E12 A5411 G E12 A58 620 Indoor Heat Exchanger Symbol Wiring Qty/unit Remarks E1210 G E12 888 007 Lamp Panel Diagram 11 G E12 408 303 Vane Motor Horizontal E12 A58 300 Indoor FAN Motor Assembly W1MV2 MV1 Right & Left UP & DownAIR Cleaning Filter ANTI-ALLERGY Enzyme Filter Indoor Unit Display Section Microprocessor ControlDRY Operation Cool OperationHeat Operation MSZ FAN d Operation MSYFuzzy control Auto Change Over ··· Auto Mode Operation MSZMode selection MSZ-A09/12/15/17 MSY-A15/17 Auto Vane OperationMSZ-A24 MSY-A24 UpwardCOOL/DRY Heat 3 4 Swing 5Program Timer Timer OperationMade in Japan EMERGENCY/TEST Operation
Related manuals
Manual 48 pages 11.54 Kb Manual 27 pages 7.37 Kb

MSY-A15NA, MSZ-A09NA, MSZ-A17NA, MSZ-A12NA, MSZ-A24NA specifications

Mitsubishi Electronics is a renowned name in the HVAC (heating, ventilation, and air conditioning) industry, known for innovative, efficient air conditioning solutions. The MSY-A17NA, MSY-A24NA, MSZ-A15NA, MSZ-A24NA, and MSZ-A12NA models exemplify this legacy, offering advanced features and cutting-edge technology. These models cater to various room sizes and requirements, providing comfortable and reliable climate control.

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