Mitsubishi Electronics MSZ-A09NA, MSY-A24NA, MSY-A15NA Instruction of troubleshooting, Operation

Page 15

8-3. Instruction of troubleshooting

Start

Indoor unit operates. Outdoor unit doesn't operate.

Indoor unit operates. Outdoor unit doesn't operate normally.

Indoor unit doesn't receive the signal from remote controller.

OPERATION INDICATOR lamp on the indoor unit is flashing on and off.

Outdoor unit

 

Outdoor unit

operates only

 

doesn't

in Test Run

 

operate

operation.

 

even in

 

w

 

Test Run

 

 

 

operation.

 

 

 

 

w

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check room

 

Refer to

temperature

 

"How to check

thermistor.

 

inverter/

Refer to 8-7.

 

compressor".

"Test point

 

 

 

diagram and

 

 

 

voltage".

 

 

 

 

 

 

 

 

Unit doesn't

 

Indoor unit

 

operates, when

operate

 

 

EMERGENCY

normal

 

 

OPERATION

operation in

 

 

switch is pressed.

COOL or

 

 

 

 

HEAT mode.

 

 

 

 

 

 

 

 

 

 

 

 

 

Refer to

 

Refer to 8-6.B

"Check of

 

"Check of

R.V. coil".

 

remote controller

 

 

and receiver

 

 

P.C. board".

 

 

 

Indoor unit doesn't operate, when

EMERGENCY

OPERATION switch is pressed.

1.Check indoor / outdoor connecting wire. (Check if the power is supplied to the indoor unit.)

2.Refer to 8-6.C"Check of indoor electronic control P.C. board and indoor fan motor".

If blinking of OPERATION INDICATOR lamp cannot be checked, it can be checked with failure mode recall function.

w

"Test Run operation" means the operation within 30 minutes after EMERGENCY OPERATION switch is pressed.

Refer to outdoor unit service manual.

Left lamp

 

Left lamp

Flash on and off

 

2-time flash

at 0.5-second

 

Cause:

intervals

 

Indoor unit

Cause:

 

• Trouble of

Indoor/

 

room temp-

Outdoor unit

 

erature/

Mis-wiring

 

indoor coil

or trouble

 

thermistor

of serial signal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Refer to 8-6.

 

Check room

D "How to

 

temperature

check of

 

thermistor

mis-wiring

 

and indoor

and serial

 

coil thermis-

signal error".

 

tor.

 

 

 

Refer to 8-7.

 

 

 

"Test point

 

 

 

diagram and

 

 

 

voltage".

 

 

 

 

 

Left lamp

 

Left lamp

 

Left lamp

 

Left lamp

 

Left lamp

 

Left lamp

3-time flash

 

4-time flash

 

5-time flash

 

6-time flash

 

7-time flash

 

14-time flash

Cause:

 

Cause:

 

Cause:

 

Cause:

 

Cause:

 

Cause:

Indoor unit

 

Indoor unit

 

Outdoor unit

 

Outdoor unit

 

Outdoor unit

 

Outdoor unit

• Trouble of

 

• Trouble of

 

• Outdoor

 

• Trouble of

 

• Trouble of

 

• Other

indoor fan

 

indoor unit

 

power

 

thermistor

 

outdoor

 

abnormality

motor

 

control

 

system

 

in outdoor

 

control

 

 

 

 

 

 

system

 

abnormality

 

unit

 

system

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Refer to 8-6.

 

Replace the

 

Refer to

 

Refer to

 

Replace the

 

Check

A "Check of

 

indoor

 

"How to check

 

"Check of

 

inverter P.C.

 

"Flow chart of

indoor fan

 

electronic

 

inverter/

 

outdoor

 

board or

 

the detailed

motor".

 

control

 

compressor".

 

thermistors".

 

the outdoor

 

outdoor unit

 

 

P.C. board.

 

 

 

 

 

electronic

 

failure mode

 

 

 

 

 

 

 

 

control P.C.

 

recall function."

 

 

 

 

 

 

 

 

board.

 

 

 

 

 

 

 

 

 

 

 

 

 

15

Image 15
Contents Revised EDITION-B ContentsTechnical Changes Part Names and Functions Specification Outlet AIR Speed and Coverage Range Operating RangeOutlines and Dimensions MSZ-A09NA MSY-A15NA MSZ-A12NA MSY-A17NA MSZ-A15NA MSZ-A17NAUnit inch MSZ-A24NA Wiring Diagram MSZ-A17NA MSY-A17NA Refrigerant System DiagramMSZ-A09NA MSZ-A12NA MSZ-A15NA MSY-A15NAP.C. Board Modification for Individual Operation Service FunctionsTimer Short Mode How to modify the remote controller P.C. boardTroubleshooting Auto Restart FunctionOperation Outdoor Unit MXZ series Troubleshooting procedureHow to replace batteries Information for Multi System AIR ConditionerThose 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 Board Test point diagram and voltagePower monitor receiver P.C Indoor electronic control P.C. boardDisplay P.C. board Receiver Board MSZ-A24NA MSY-24NADisassembly Instructions Removing the panel PhotoMSZ-A09/12/15/17NA MSY-A15/17NA Photo Removing the electrical box Operating Procedure PhotosMotor band Removing the horizontal vane motor unit PhotoRemoving the indoor fan motor and the line flow Photo FanBoard and the display P.C. board MSZ-A24NA MSY-A24NA Operating Procedure PhotosRemoving the front panel Removing the electronic control P.C. board, the receiverRemoving the line flow fan and the indoor fan motor Removing the vane motorAccessory and Remote Controller Parts ListSleeve Bearing Nozzle AssemblySwitch Holder Bearing MountAIR Cleaning Filter ANTI-ALLERGY Enzyme Filter Grille Front Panel AssemblyCatch Screw CAPIndoor Unit Functional Parts and Electrical Parts AIR Cleaning Filter ANTI-ALLERGY Enzyme Filter Remote Controller KM07J Remote Controller KM07LE12 897 702 Qty/unit RoHSE12 751 509 E12 001 504E12 A56 RoHS Part name E12 A544PCS/ SET 3PCS/ SET11 G E12 A58 620 Indoor Heat Exchanger 11 G E12 408 303 Vane Motor Horizontal E12 A58 300 Indoor FAN Motor Assembly W1Remote Controller KM07K Remote Controller KM07MAIR Cleaning Filter ANTI-ALLERGY Enzyme Filter Indoor Unit Display Section Microprocessor ControlFAN d Operation MSY Cool OperationDRY Operation Heat Operation MSZAuto Change Over ··· Auto Mode Operation MSZ Mode selectionFuzzy control Upward Auto Vane OperationMSZ-A09/12/15/17 MSY-A15/17 MSZ-A24 MSY-A24COOL/DRY Heat 3 4 Swing 5Program Timer Timer OperationMade in Japan Changing temperature indication F/CEMERGENCY/TEST Operation MSZ-ANA MSY-ANA
Related manuals
Manual 48 pages 59.2 Kb Manual 27 pages 7.37 Kb

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

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