Mitsubishi Electric MSZ-D30NA Manual de usuario

SERVICE MANUAL

CONTENTS

1. TECHNICAL CHANGES ······························3

2. PART NAMES AND FUNCTIONS ··················4

3. SPECIFICATION ········································5

4. OUTLINES AND DIMENSIONS ·····················7

5. WIRING DIAGRAM ·····································8

6. REFRIGERANT SYSTEM DIAGRAM ·············9

7. SERVICE FUNCTIONS······························10

8. MICROPROCESSOR CONTROL·················12

9. TROUBLESHOOTING·······························19

10. DISASSEMBLY INSTRUCTIONS·················32

Models

MSZ-D30NA MSZ-D30NA -8

MSZ-D36NA MSZ-D36NA -8

MSY-D30NA MSY-D30NA -8

MSY-D36NA MSY-D36NA -8

No. OBH501

REVISED EDITION-D

INDOOR UNIT

Outdoor unit service manual

MUZ-D•NA Series (OBH502)

MUY-D•NA Series (OBH502)

PARTS CATALOG (OBB501)

OBH501 REVISED EDITION-C is void.

Revision D:

• 9-7. TEST POINT DIAGRAM AND

VOLTAGE has been modied.

Revision C:

• MSZ-D30/D36NA- 8and MSY-D30/D36NA- 8have been added.

Revision A:

• 3. SPECIFICATION has been corrected.

Revision B:

• 3. SPECIFICATION has been corrected.

Powerful has been added.

Revision D:

• 9-7. TEST POINT DIAGRAM AND VOLTAGE has been modied.

Use the specied refrigerant only

Never use any refrigerant other than that specified.

Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of.

Correct refrigerant is specified in the manuals and on the spec labels provided with our products.

We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to

follow the instructions.

Prepare the proper tools.

Prepare the proper protectors.

Provide adequate ventilation.

After stopping the operation of the air conditioner, turn off the power-supply breaker and pull the power plug.

Discharge the capacitor before the work involving the electric parts.

Do not perform the work involving the electric parts with wet hands.

Do not pour water into the electric parts.

Do not touch the refrigerant.

Do not touch the hot or cold areas in the refrigeration cycle.

When the repair or the inspection of the circuit needs to be done without turning off the power, exercise great caution not to

touch the live parts.

WARNING

• When the refrigeration circuit has a leak, do not execute pump down with the compressor.

• When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.

The compressor may burst if air etc. get into it.

• When opening or closing the valve below freezing temperatures, refrigerant may spurt out from the gap

between the valve stem and the valve body, resulting in injuries.

OBH501D

TECHNICAL CHANGES1

MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA

1. New model

MSZ-D30NA MSZ-D36NA - 8

1. Electronic control P.C. board has been changed.

MSZ-D36NA MSZ-D36NA - 8

1. Electronic control P.C. board has been changed.

MSY-D30NA MSY-D30NA - 8

1. Electronic control P.C. board has been changed.

MSY-D36NA MSY-D36NA - 8

1. Electronic control P.C. board has been changed.

OBH501D

2 PART NAMES AND FUNCTIONS

ACCESSORIES

MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA

Model

MSZ-D30NA

MSZ-D36NA

MSY-D30NA

MSY-D36NA

Installation plate 1

Installation plate screw 4 × 25 mm 7

Remote controller holder 1

Screw for 3.5 × 1.6 mm (Black) 2

Battery (AAA) for remote controller 2

Wireless remote controller 1

Felt tape (Used for left or left-rear piping) 2

L-Joint pipe 1

Conduit plate 1

Air cleaning lter 2

Remote controller

Operation indicator

lamp

Remote control

receiving section

Emergency operation

switch

Horizontal vane

Air outlet

Air ﬁlter

(Catechin air ﬁlter)

Air inlet

Front panel

Air cleaning ﬁlter

(Anti-Allergy Enzyme Filter)

OBH501D

SPECIFICATION3

Model MSZ-D30NA MSY-D30NA MSZ-D36NA MSY-D36NA

Power supply V, phase, Hz 208/230 , 1 , 60

Max. fuse size (time delay)/ Disconnect switch

A 15

Min. circuit ampacity A 1.0

Fan motor F.L.A 0.76

Airow

Low - Med. - High

- Powerful

COOL Dry

(Wet) CFM

389 - 639 - 848 - 887

(350 - 576 -763 - 798)

HEAT Dry 445 - 639 - 848 - 887 — 445 - 639 - 848 - 887 —

Moisture removal pt./h 9.9 11.3 11.9

Sound level

Low - Med. - High

- Powerful

Cooling

dB(A)

32 - 42 - 49 -51

Heating 34 - 42 - 49 - 50 — 34 - 42 - 49 - 50 —

Cond. drain connection O.D. in. 5/8

Dimensions

in.

46-1/16

D 11-5/8

H 14-3/8

Weight Ib. 40

External nish Munsell 1.0Y 9.2/0.2

Remote controller Wireless type

Control voltage (by built-in transformer) 12-24 V DC

NOTE : Test conditions are based on AHRI 210/240.

OBH501D

3-1. OPERATING RANGE

(1) POWER SUPPLY

Rated voltage Guaranteed voltage (V)

Indoor unit

208/230 V

1 phase

60 Hz

Min. 187 208 230 Max. 253

(2) OPERATION

Mode Condition

Intake air temperature (°F)

Indoor Outdoor

DB WB DB WB

Cooling

Standard temperature 80 67 95 —

Maximum temperature 90 73 115 —

Minimum temperature 67 57 14 —

Maximum humidity 78% —

Heating

Standard temperature 70 60 47 43

Maximum temperature 80 67 75 65

Minimum temperature 70 60 14 13

3-2. OUTLET AIR SPEED AND COVERAGE RANGE

Model Mode Function Airow

(CFM)

Air speed

(ft./sec.)

Coverage

range (ft.)

MSZ-D30NA

MSZ-D36NA HEAT Dry 848 23.6 45.0

MSZ-D30NA

MSZ-D36NA

MSY-D30NA

MSY-D36NA

COOL

Dry 848 23.6 45.0

Wet 763 21.3 40.7

● The air coverage range is the figure up

to the position where the air speed is 1

ft./sec., when air is blown out horizon-

tally from the unit properly at the High

speed position.

The coverage range should be used

only as a general guideline since it var-

ies according to the size of the room

and furniture arranged inside the room.

OBH501D

OUTLINES AND DIMENSIONS4

Unit : inch

MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA

Wireless remote controller

Piping Insulation

Liquid line

Drain hose

Gas line

Indoor unit

Air out

Air in

45-1/2

46-1/16

14-3/8

2-15/16 33-11/16 9-1/2

2-11/16

2-3/16 20-7/8 17-11/16

Installation plate

Piping

Drain hose

Wall hole ø3

2-5/16 3/4

14-3/8

1-7/8

4-11/16

7/811-5/81-7/8

1/8

5-3/8

5-7/8

2-5/8

2-1/2

2-15/16

ø1-1/4 O.D

ø9/16 I.D

ø1-15/16 O.D

ø1-1/4 I.D

ø3/8 19-11/16

(Flared connection ø3/8)

ø5/8 16-7/8

(Joint connection ø5/8)

Joint ø1-15/16 O.D

ø1-1/4 I.D

ø5/8

(Flared connection ø5/8)

Insulation ø1-1/8 Connected part ø9/16 O.D

4-11/16 or more 8-11/16 or more

9-3/8 or more

4-3/16 or more

3/8 or more

2-3/16 or more

In case of left,left back,

or left under piping (using spacer) 5-1/8 or more

2-13/16 or more

14-1/2 or more

Required Space (Indoor Unit)

11-5/8 1/4

OBH501D

5 WIRING DIAGRAM

MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA

MSZ-D30NA- 8MSZ-D36NA- 8MSY-D30NA- 8MSY-D36NA- 8

OBH501D

REFRIGERANT SYSTEM DIAGRAM6

MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA Unit : inch

Refrigerant flow in cooling

Refrigerant flow in heating (MSZ-D30NA MSZ-D36NA only)

Indoor

heat

exchanger

Strainer

Room temperature

thermistor

T11

Refrigerant pipe ø5/8

(with heat insulator)

Flared connection

Indoor coil

thermistor

RT12 (Main)

Refrigerant pipe ø3/8

(with heat insulator)

Distributor

Indoor coil

thermistor

RT13 (Sub)

Joint

Flared connection

Joint connection

OBH501D

7 SERVICE FUNCTIONS

7-1. TIMER SHORT MODE

For service, set time can be shortened by short circuit of JPG and JPS the indoor electronic control P.C. board.

The time will be shortened as follows. (Refer to 9-7.)

Set time : 1-minute 1-second

Set time : 3-minute 3-second (It takes 3 minutes for the compressor to start operation. However, the starting time is

shortened by short circuit-of JPG and JPS.)

7-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION

A maximum of 4 indoor units with wireless remote controllers can be used in a room.

In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must be

modified according to the number of the indoor unit.

How to modify the remote controller P.C. board

Remove batteries before modification.

The board has a print as shown below :

NOTE : For modification, take out

the batteries and press the

OPERATE/STOP (ON/OFF)

button twice or 3 times at

first.

After finish modification,

put back the batteries then

press the RESET button.

The P.C. board has the print “J1” and “J2”. Solder “J1” and “J2” according to the number of indoor unit as shown in Table 1.

After modification, press the RESET button.

Table 1

1 unit operation 2 units operation 3 units operation 4 units operation

No. 1 unit No modication Same as at left Same as at left Same as at left

No. 2 unit — Solder J1 Same as at left Same as at left

No. 3 unit — — Solder J2 Same as at left

No. 4 unit — — — Solder both J1 and J2

How to set the remote controller exclusively for particular indoor unit

After you turn the breaker ON, the first remote controller that sends the signal to the indoor unit will be regarded as the remote

controller for the indoor unit.

The indoor unit will only accept the signal from the remote controller that has been assigned to the indoor unit once they are set.

The setting will be cancelled if the breaker has turned off, or the power supply has shut down.

Please conduct the above setting once again after the power has restored.

MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA

OBH501D

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