Mitsubishi Electric Mr.Slim SLZ-KA09NA Manuale operativo

TECHNICAL & SERVICE MANUAL

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

CONTENTS

1. PART NAMES AND FUNCTIONS....... 2

2. SPECIFICATIONS ............................... 5

3. OUTLINES AND DIMENSIONS........... 7

4. WIRING DIAGRAM.............................. 9

REFRIGERANT SYSTEM DIAGRAM

..... 10

6. TROUBLESHOOTING....................... 11

7. SPECIAL FUNCTION ........................ 23

8. 4-WAY AIR FLOW SYSTEM.............. 26

9. DISASSEMBLY PROCEDURE.......... 28

November 2010

No. OCH487

REMOTE CONTROLLER

(Option)

Indoor unit

[Model names] [Service Ref.]

SLZ-KA09NA SLZ-KA09NA.TH

SLZ-KA12NA SLZ-KA12NA.TH

SLZ-KA15NA SLZ-KA15NA.TH

INDOOR UNIT

Model name

indication

ON/OFF

TEMP.

Note:

• This manual describes only

service data of the indoor

units.

• RoHS compliant products

have <G> mark on the spec

name plate.

• For servicing RoHS compli-

ant products, refer to the

RoHS Parts List.

PARTS CATALOG (OCB487)

9700058

1PART NAMES AND FUNCTIONS

Auto Air Swing Vane

Disperses airflow up and

down and adjusts the angle

of airflow direction.

Grille

Filter

Removes dust and pollutants

from inhaled air.

Horizontal Air Outlet

Sets horizontal airflow automatically

during cooling or dehumidifying.

Air Intake

Intakes air from room.

Indoor Unit

SLZ-KA09NA.TH SLZ-KA12NA.TH SLZ-KA15NA.TH

Radio frequency interface RF thermostat Wired remote controller

Remote controller (Optional parts)

ON/OFF

TEMP.

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

Temperature setting buttons

Down

Timer Menu button

(Monitor/Set button)

Mode button (Return button)

Set Time buttons

Back

Ahead

Timer On/Off button

(Set Day button)

Opening the

cover

ON/OFF button

Fan Speed button

Filter button

(<Enter> button)

Test Run button

Check button (Clear button)

Airflow Up/Down button

Louver button

( Operation button)

To return operation

number

Ventilation button

( Operation button)

To go to next operation

number

Built-in temperature sensor

Wired remote controller (Option)

Once the controllers are set, the same operation mode can be repeated by simply pressing the ON/OFF button.

SLZ-KA09NA.TH SLZ-KA12NA.TH SLZ-KA15NA.TH

Wired remote controller (Option)

●

°F°C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

OFF

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

Note:

“PLEASE WAIT” message

This message is displayed for approximately 3 minutes when power is supplied to the indoor unit or when the unit is recovering from a power failure.

“NOT AVAILABLE” message

This message is displayed if an invalid button is pressed (to operate a function that the indoor unit does not have).

If a single remote controller is used to operate multiple indoor units simultaneously that are different types, this message will not be displayed as

far as any of the indoor units is equipped with the function.

Display Section

For purposes of this explanation,

all parts of the display are shown.

During actual operation, only

the relevant items will be lit.

Identifies the current operation

Shows the operating mode, etc.

*Multilanguage display is available.

“Centrally Controlled” indicator

Indicates that operation from the

remote controller has been prohib-

ited by a master controller.

“Timer is Off” indicator

Indicates that the timer is off.

Temperature Setting

Shows the target temperature.

Day-of-Week

Shows the current day of the week.

Time/Timer Display

Shows the current time, unless the simple or Auto Off

timer is set.

If the simple or Auto Off timer is set, the time to be

switched off is shown.

“Sensor” indication

Displays when the remote controller

sensor is used.

“Locked” indicator

Indicates that remote controller but-

tons have been locked.

“Clean The Filter” indicator

To be displayed on when it is time to

clean the filter.

Timer indicators

The indicator comes on if the corre-

sponding timer is set.

Up/Down Air Direction indica-

tor

Shows the direction of the

outcoming airflow.

“One Hour Only” indicator

Room Temperature display

Shows the room temperature. The room

temperature display range is 46~102°F.

The display blinks if the temperature

is less than

46°F or 102°F

or more.

Louver display

Indicates the action of the swing louver.

Does not appear if the louver is not

running.

(Power On indicator)

Indicates that the power is on.

Fan Speed indicator

Shows the selected fan speed.

Ventilation indicator

Appears when the unit is running in

Ventilation mode.

Displays if the airflow is set to

low or downward during COOL

or DRY mode. (Operation varies

according to model.)

The indicator goes off in one hour,

when the airflow direction also

changes.

SPECIFICATIONS

2-1. Operating range

(1) Power supply

Rated voltage Guaranteed voltage (V)

Indoor unit

208/230 V

1 phase

60 Hz

(2) Operation

Mode Condition

Intake air temperature (°F)

Indoor Outdoor

DB WB DB WB

Cooling

Standard temperature 80 67 95 —

Maximum temperature 95 71 115 —

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 -4 -5

2-2. Outlet air speed and coverage

Model Function Airﬂow

(CFM)

Air speed

(ft./s.)

Coverage

(ft.)

SLZ-KA09NA Dry 350 11.2 12.1

Wet 320 10.2 11.1

SLZ-KA12NA Dry 390 12.1 13.5

Wet 350 10.9 12.1

SLZ-KA15NA Dry 390 12.1 13.5

Wet 350 10.9 12.1

Indoor model SLZ-KA09NA SLZ-KA12NA SLZ-KA15NA

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

Max. fuse size (time delay)/Disconnect switch

A15

Min. circuit ampacity A 1.0

Fan motor F.L.A 0.23 0.28 0.28

Airﬂow

(Low - Med. - High)

Dry CFM 280-320-350 280-320-390 280-320-390

Wet CFM 250-290-320 250-290-350 250-290-350

Moisture removal pt/h 1.2 2.3 4.5

Sound pressure level (Low - Med. - High) dB(A) 29-32-38 30-34-39 31-35-40

External ﬁnish color Unit: Galvanized sheets with gray heat insulation

Grille: ABS resin Munsell 6.4Y 8.9/0.4

Dimensions unit <Grille> W in. 22-7/16 <25-19/32>

D in. 22-7/16 <25-19/32>

H in. 8-3/16 <25/32>

Weight unit <Grille> lb. 36 <7>

Field drainpipe O.D. in. 1-1/4

Control voltage (by buit-in transformer) 12 - 24 VDC

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

●The air coverage is the ﬁgure up to the position

where the air speed is 1 ft./s., when air is blown

out horizontally from the unit properly at the

High speed position.

The coverage should be used only as a general

guideline since it varies according to the size of

the room and furniture arraged inside the room.

Min. 187 208 Max. 253230

SLZ-KA12NA.TH

High

Medium

SPL(dB)

LINE

<60Hz>

NOTCH

Low 30

63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)

BAND CENTER FREQUENCIES, Hz

SLZ-KA09NA.TH

High

Medium

SPL(dB)

LINE

<60Hz>

NOTCH

Low 29

63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)

BAND CENTER FREQUENCIES, Hz

NOISE CRITERION CURVES

UNIT

5 ft

MICROPHONE

CEILING

SLZ-KA15NA.TH

High

Medium

SPL(dB)

LINE

<60Hz>

NOTCH

Low 31

63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)

BAND CENTER FREQUENCIES, Hz

NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound

may be bigger than the indicated level in actual use due to surrounding echoes. The sound level can be higher

by about 2 dB than the indicated level during cooling and heating operation.

OUTLINES AND DIMENSIONS

SLZ-KA15NA

SLZ-KA12NA

SLZ-KA09NA

Models

(W6.35mm)

flared connection

Refrigerent pipe

(liquid)

Refrigerent pipe

(gas)

(W9.52mm)

flared connection

3/8 inch

Detail drawing of fresh air intake

Ceiling surface

Cut out hole

:2-7/8(:73.4)

Burring hole

3-:1/8(:2.8)

:3-15/16(:100)

4-21/32(118)

1(25)

120



120

(27 )

+3/16

1-1/16

19/32~1-15/32(15~37) 19/32~1-15/32(15~37)

22-11/16~24-13/32(576~620)

22-7/16(570)

20-7/8(530)

Grille

Fresh air

intake

Drain pipe

VP-25 connection

(O.D.:1-1/4(:32))

Vane motor

Drain hole

Air intake grille

2-5/32(55) 1-3/8(35)

1-3/8(35) 2-5/32(55)

Auto vane

Grille

Air intake hole

Air outlet hole

11-27/32(301)

14-27/32(377)

25-19/32(650)

Suspension bolt M10 or W3/8

9-1/16(230)

7-5/32(182)1-7/8(48)

Wiring entry

Terminal block Ceiling surface

9-1/4(235)

8-3/16(208)

7-19/32(193)

25/32(20)

3-21/32(93)

1-1/2~2-9/32(38~58)

2-19/32(66)

4-3/4(121)

21/32(17) 7-15/16(202)

2-7/32(56)

2-1/14(57)

3-7/16(87)

1-7/32(31)

Ceiling hole

Suspension bolt pitch

19/32~1-15/32(15~37) 19/32~1-15/32(15~37)

22-11/16~24-13/32(576~620)

16-17/32(420)

22-7/16(570)

13-3/16(335)

7-27/32(199)

13-27/32(352)

13-3/16(335)

Suspension bolt pitch

Ceiling hole

25-19/32(650)

Brand label

V/M

1/4 inch

(W6.35mm)

flared connection

1/4 inch

(W6.35mm)

flared connection

1/4 inch

(W9.52mm)

flared connection

3/8 inch

(W12.7mm)

flared connection

1/2 inch

Refrigerant

pipe (gas)

Refrigerant

pipe (liquid)

Suspension bolt

lower edge

Unit : inch (mm)

SLZ-KA09NA.TH SLZ-KA12NA.TH SLZ-KA15NA.TH

WIRED REMOTE CONTROLLER Unit : inch (mm)

5-1/8 (130)

3/4 (19)

4-23/32 (120)

1-23/32 (43.5)

(Option)

WIRING DIAGRAM

The black square (

■)

indicates a switch position.

CN30

LED3 LED2 LED1

FUSE

135 79

3RED

(D·HEATER)

CNC

X6 X5 X4 X7

RED

(

POWER

BOARD)

CNDK

WHT

(

POWER

BOARD)

CN2D

RED

(INTAKE)

CN20 BLU

(REMOCON)

CN22

WHT

(LIQUID)

CN21

WHT

(DRAIN)

CN31

GRN

(VANE)

CN6V

BLU

WHT

YLW

ORN

RED

CN2L BLK

(2 PHASE)

CN29

ORN

(

POWER

)

CND

BLU

(D·U·M)

CNP BLU

(CONTROL)

CN3C

CNSK

(RED)

CN2S

(WHT)

DC13.1V

WHT

(FAN)

FAN

31 15

CN24

CN32 CN51 CN41

12 15

31 31 31

BLU

WHT

YLW

BLK

BRN

BLU

WHT

YLW

RED

GRILLE

ORN

RED

WHT

BLK

RED

YLW

RED

ORN

RED

BLU

ORN

CN90

12 12

12 1

OFF

SWE

OFF

SW2

See Fig:+1

12345

I.B

P. B

TB4

OUTDOOR

UNIT

TB15

TB6

TH5 TH1 TH2

SW2

MODELS

SLZ-

KA09NA

SLZ-

KA12NA

SLZ-

KA15NA

OFF

12345

OFF

12345

OFF

12345

RED

CN105

RFI

R.B

+For details on how to operate self-diagnosis refer to the technical manuals etc.

SYMBOL NAME SYMBOL NAME

I.B

INDOOR CONTROLLER BOARD

INDOOR POWER BOARD

FUSE (T6.3AL250V)

CONNECTOR (LOSSNAY)

CONNECTOR (REMOTE SWITCH)

CONNECTOR (HA TERMINAL-A)

CENTRALLY CONTROL

POWER SUPPLY (I.B)

TRANSMISSION (INDOOR-OUTDOOR)

DRAIN PUMP/DEW PREVENTION HEATER

SWITCH (EMERGENCY OPERATION)

SWITCH (CAPACITY CODE)

FAN MOTOR (WITH THERMAL FUSE)

VANE MOTOR

DRAIN PUMP

DRAIN SENSOR

TERMINAL BLOCK

(INDOOR/OUTDOOR CONNECTING LINE)

TERMINAL BLOCK (

REMOTE CONTROLLER

TRANSMISSION LINE

)

TERMINAL BLOCK (

REMOTE CONTROLLER

TRANSMISSION LINE

)

ROOM TEMP. THERMISTOR

(32°F / 15kΩ, 77°F / 5.4kΩDETECT)

PIPE TEMP. THERMISTOR/LIQUID

(32°F / 15kΩ, 77°F / 5.4kΩDETECT)

COND. / EVA. TEMP. THERMISTOR

(32°F / 15kΩ, 77°F / 5.4kΩDETECT)

DEW PREVENTION HEATERH2

FUSE

CAPACITOR (FAN MOTOR)

CN2L

CN32

P.B

CN41

CONNECTOR (RADIO FREQUENCY INTERFACE)

RADIO FREQUENCY INTERFACE FOR

RF THERMOSTAT

CN105

CONNECTOR (BACK-UP HEATING)

CONNECTOR (LLC)

CN24

CN30

CN51

TB4

LED1

TB15

RFI

LED2

TH1

LED3

RELAY (FAN MOTOR LL)

RELAY (FAN MOTOR Lo)

RELAY (FAN MOTOR Hi)

RELAY (FAN MOTOR Me)

TH2

SW2

TH5

TB6

SWE

[LEGEND]

NOTES: 1. Since the outdoor side electric wiring may change be sure to check the

outdoor unit electric wiring for servicing.

2. Indoor and outdoor connecting wires are made with poIarities, make wiring

matching terminal numbers (S1, S2, S3).

3. Use copper supply wires.

SymboIs used in wiring diagram above are, : Connector, : Terminal (block).

R.B

OPTION PART

WIRED REMOTE CONTROLLER BOARD

<Fig: +1>

SLZ-KA09NA.TH SLZ-KA12NA.TH SLZ-KA15NA.TH

5REFRIGERANT SYSTEM DIAGRAM

Pipe temperature

thermistor/liquid

(TH2)

Distributor

with strainer

#50

Condenser/evaporator

temperature thermistor

(TH5)

Room temperature

thermistor (TH1)

Refrigerant flow in cooling

Refrigerant flow in heating

Strainer

#50

Strainer

#50

Heat exchanger

Refrigerant GAS pipe connection

(Flare)

Refrigerant LIQUID pipe connection

(Flare)

SLZ-KA09NA.TH SLZ-KA12NA.TH SLZ-KA15NA.TH

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