Mitsubishi SLZ-A09AR Operating manual

TECHNICAL & SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. PART NAMES AND FUNCTIONS ········2
2. SPECIFICATIONS·································3
3. OUTLINES AND DIMENSIONS············5
4. WIRING DIAGRAM ·······························7
5. REFRIGERANT SYSTEM DIAGRAM ·········8
6. TROUBLESHOOTING ··························9
7. 4-WAY AIR FLOW SYSTEM···············16
8. DISASSEMBLY PROCEDURE ···········18
9. PARTS LIST········································21
No. OC302
INDOOR UNIT
REMOTE CONTROLLER
ON/OFF
RESET
TOO
WARM
TOO
COOL
MODE
AUTO COOL
DRY HEAT
FAN
VANE
SELECT
TIME
h
Ceiling Cassettes
Series SLZ
Indoor unit
[Model names] [Service Ref.]
SLZ-A09AR SLZ-A09AR.TH
SLZ-A12AR SLZ-A12AR.TH
SLZ-A18AR SLZ-A18AR.TH
•This manual does not cover
outdoor units. When servicing
them, please refer to the
service manual No.OC304
and this manual in a set.
R410A
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2
1PART NAMES AND FUNCTIONS
ON/OFF
RESET
TOO
WARM
TOO
COOL
MODE
AUTO COOL
DRY HEAT
FAN
VANE
SELECT
TIME
h
ON / OFF button
Pushing button starts
operation. Pushing again
stops operation.
●Avoid operation of buttons with fingernails or other sharp objects. Sharp objects may scratch remote controller.
Attention :
Auto Air Swing Vane
Disperses airflow up and
down and adjusts the angle
of airflow direction.
Grille
Filter
Remove dust and pollutants
from inhaled air
Horizontal Air Outlet
Sets airflow horizontal automatically
during cooling or dehumidifying.
Air Intake
Inhales air from room.
SET TEMPERATURE
button
SET TEMPERATURE
button sets and any
desired room temperature.
MODE SELECT button
This button is used to change
between auto, cooling,
heating and drying operation
modes. (SLZ)
This button is used to set
fan speed to low, medium
or high.
TIMER SELECT button
Used for selecting timed
starting or stopping.
FAN SPEED button
Used to change the airflow
direction.
VANE CONTROL button
Remote controller
Indoor Unit
SLZ-A09AR.TH
SLZ-A12AR.TH
SLZ-A18AR.TH
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3
SPECIFICATIONS
2
SLZ-A09AR.TH SLZ-A12AR.TH
Indoor model
Function
Power supply Single phase
230V, 50Hz
600/540/480
10
0.18
40
0.014
0.18
PK6V15-LA
4
38/35/32
650/580/530
3
10
10
10
MPPC
Cooling
91
Heating
92
Single phase
230V, 50Hz
660/600/540
10
0.23
52
0.014
0.23
PK6V20-LE
4
39/37/34
690/630/570
3
10
10
10
MPPC
Cooling
94
Heating
95
Air flow (High/Med./Low)
Power outlet
Running current ✽1
Power input Rated frequency
Dew prevention heater
Power factor ✽1
Fan motor current ✽1
Model
Winding
resistance (at20:)
Width
Height
Depth
Weight
Air direction
Sound level(High/Med./Low)
Fan speed(High/Med./Low)
Fan speed regulator
Thermistor RT11(at25:)
Thermistor RT12(at25:)
Thermistor RT13(at25:)
Remote controller model
K/h
A
A
W
(kW)
%
A
"
mm(in)
mm(in)
mm(in)
kg
dB(A)
rpm
k"
k"
k"
Electrical data
Fan motor
Special remarks
Capacity
Dimensions
WHT-BLK : 407 BLK-BLU : 55
BLU-YLW : 31 YLW-BRN : 30
BRN-RED : 165
UNIT : 570(22-7/16) PANEL : 650(25-9/16)
UNIT : 208(8-3/16) PANEL : 20(13/16)
UNIT : 570(22-7/16) PANEL : 650(25-9/16)
UNIT : 16.5 PANEL : 3
WHT-BLK : 384 BLK-BLU : 111
BLU-YLW : 49 YLW-BRN : 46
BRN-RED : 311
SLZ-A18AR.TH
Single phase
230V, 50Hz
660/600/540
20
0.24
53
0.014
0.24
PK6V20-LF
4
40/38/35
710/650/590
3
10
10
10
MPPC
Cooling
97
Heating
97
WHT-BLK : 317 BLK-BLU : 88
BLU-YLW : 52 YLW-BRN : 45
BRN-RED : 301
NOTE : Test conditions are based on ISO 5151
Cooling : Indoor D.B. 27:W.B. 19:
Outdoor D.B. 35:W.B. 24:
Heating : Indoor D.B. 20:W.B. 15:
Outdoor D.B. 7:W.B. 6:
Refrigerant piping length (one way): 5m
✽1 Measured under rated operating frequency.
1.5+ 440V
250V 3.15A
MSBPC20 12V 250"
POWER SUPPLY : 3P TO OUTDOOR UNIT : 4P
G4A-1A-E-PS 12V DC
145:i2:
240V AC 15W
INDOOR UNIT
Item Model
Indoor fan capacitor
Fuse
Vane motor
Terminal block
Contactor
Indoor fan motor thermal fuse
Cord Heater
SLZ-A09AR.TH SLZ-A12AR.TH SLZ-A18AR.TH
(C1)
(F11)
(MV)
(TB)
(52C)
(H2)
Specifications and rating conditions of main electric parts
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4
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD 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-A12AR.TH Hi
Me 39
SPL(dB)
37
LINE
<50Hz>
NOTCH
Lo 34
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD 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-A09AR.TH Hi
Me 38
SPL(dB)
35
LINE
<50Hz>
NOTCH
Lo 32
NOISE CRITERION CURVES
UNIT
1.5m
MICROPHONE
CEILING
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD 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-A18AR.TH Hi
Me 40
SPL(dB)
38
LINE
<50Hz>
NOTCH
Lo 35
NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound
may be bigger than displayed level under actual installation condition by surrounding echoes. The sound level
can be higher by about 2 dB than the displayed level during cooling and heating operation.
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5
OUTLINES AND DIMENSIONS
3
Unit : mm
SLZ-A09AR.TH
SLZ-A12AR.TH
SLZ-A18AR.TH
Suspension bolt M10 or 3/8 (procure locally)
1/4F
flared connection
[6.35mm
1/4F
flared connection
[6.35mm [9.52mm
flared connection
3/8F 1/2F
flared connection
SLZ-A18AR SLZ-A12AR
Refrigerent pipe (liquid)
Refrigerent pipe (gas)
Models
SLZ-A09AR
[6.35mm
flared connection
1/4F Refrigerent pipe (liquid) Refrigerent pipe
(gas)
[12.7mm [9.52mm
flared connection
3/8F
15~37 15~37
576~620
570
530
Grille
Fresh air intake
Drain pipe VP-25 connection (O.D.[32)
Vane motor
Drain hole
V/M
V/M
V/M
V/M
Air intake grille
55 35
35 55
Auto vane
Grille
Air intake hole
Air intake hole
Air outlet hole
Air outlet hole
301
301
Emergency operation switch(cooling)
Emergency operation switch(heating)
Operation lamp
(WIRELESS PANEL)
DEFROST/STAND BY lamp Receiver
Detail drawing of fresh air intake
Ceiling surface
Cut out hole
[73.4
Burring hole
3-[2.8 hole
[100
118
25
120°
120°
377
377
650
650
Suspension bolt lower edge
230
18248
Wiring entry
Terminal block Ceiling surface
235
208
27 +5
0
193
20
93
38~58
66121
17 202
56
57
72
31
Ceiling hole
Suspension bolt pitch
15~37
15~37
576~620
420
570
335
199
352 335
Suspension bolt pitch
Ceiling hole
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6
REMOTE CONTROLLER
Installation area
• Area in which the remote controller is not exposed direct sunshine.
• Area in which there is no nearby heating source.
• Area in which the remote controller is not exposed to cold (or hot) winds.
• Area in which the remote controller can be operated easily
• Area in which the remote controller is beyond the reach of children.
Installation method
1Attach the remote controller holder to the desired location using two tapping screws.
2Place the lower end of the controller into the holder.
AWireless remote controller (Accessory)
BWall
CRemote controller holder (Accessory)
DFixing screw (Accessory)
• The signal can travel up to approximately 7 meters (in a straight line) within 45
degrees to both right and left of the center line of the receiver.
In addition, the signal may not be received if there is interference of light of fluorescent
lights or strong sunlight.
A
C
B
D
ON/OFF
RESET
TOO
WARM
TOO
COOL
MODE
AUTO COOL
DRY HEAT
FAN
VANE
SELECT
TIME
h
57 17.5
140
Unit : mm
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7
WIRING DIAGRAM
4
SLZ-A09AR.TH
SLZ-A12AR.TH
SLZ-A18AR.TH
GRILLE
FOR A18 (1:1 SYSTEM)
OR MULTI SYSTEM
FOR A09/12
★
★
(1:1 SYSTEM)
TO OUTDOOR
UNIT
CONNECTING
CONDENSER/EVAPORATOR
TEMPERATURE THERMISTOR
RT13
RT13
3
12VDC
★The 12V DC is NOT always against the ground.
Terminal 3 has 12V DC against terminal N.
However, between 3 and 2, these terminals are NOT electrically insulated by the transformer or other device.
TO OUTDOOR
UNIT
CONNECTING 2
N
TB TERMINAL BLOCK
MV MV MV MV CNB BZ
LED2 LED1 SW1 SW2
RU
W.B
POWER SUPPLY
~/N
220-240V 220V
50Hz 60Hz
FAN MOTOR
CAPACITOR
C1
5
555H2
5
BLK
DC13.1V
TRANS
X5
X5
W.R
REMOTE
CONTROLLER
TB
: Connector
: Terminal block
(For field wiring)
2.Use copper conductors only.
3.Symbols below indicate.
PIPE TEMPERATURE
THERMISTOR / LIQUID
RT12
W.R WIRELESS REMOTE
CONTROLLER
RT11 ROOM TEMPERATURE
THERMISTOR
VANE MOTORMV
FAN MOTOR
MF
DEW PREVENTION
HEATER
H2
DRAIN SENSOR
DRAIN-UP
MACHINE
DP
DS
FUSE FUSE(3.15A)
wWHT
3
N
2
220-240V~
12VDC
L
3
4
52C
ZNR1
DP
MF
X1
X2
X3
X4 X4
X3
X2
X1
wRED
wBLU
GRN/YLW
wWHT
N
GRN/YLW
TB
CIRCUIT BREAKER
wBLU
1.About the outdoor side electric wiring refer to the outdoor unit electlic wiring diagram for servicing.
How to remove the terminals
shown at " w" mark.
" w" shows the terminals with a lock mechanism,
so they cannot be removed when you pull the
lead wire. Be sure to pull the wire by pushing
the locking lever (projected part) of the
terminal with a finger.
locking lever
1Slide the sleeve.
2Pull the wire
while pushing
the locking lever.
sleeve
NOTES:
9
BUZZER
ZNR1 VARISTOR
NAME
SYMBOLSYMBOL
NAME
SYMBOL NAME
X1
X2-X5
RELAY(D.PUMP
/D.HEATER)
RELAY
(FAN MOTOR)
COMPRESSOR
CONTACTOR
52C
BZ
LED1
LED2
SW1
SW2
I.B INDOOR
CONTROLLER
BOARD W.B
WIRELESS REMOTE
CONTROLLER
BOARD
RU
LED
(RUN INDICATOR)
LED
(HOT ADJUST)
SWITCH
(HEATING ON/OFF)
SWITCH
(COOLING ON/OFF)
RECEVING UNIT
[LEGEND]
FUSE
C1
I.B
RT11
RT12
DS
(2 PHASE) 1
2
BLK
CN29
1
31 3
BRN
RED
ORN
YLW
BLU
VLT
GRY
PINK
SKY BLU
YLW YLW RED
ORN
YLW
WHT
BLU
1745
10 89
ORN
RED
BRN
YLW
BLU
WHT
YLW
YLW
BLU
RED WHT
RED
GRN
WHT
WHT
1
3
5
7
1
3
1
3
5
5
3
1
CNP(PUMP)
CNC
CND(POWER)
RED
CN31
CN20
CN21
(DRAIN)
(INTAKE)
(LIQUID)
CN90
(WIRELESS)
CN6V
(VANE)
(HEATER)
1
2
3
1
1
2
2
12345 1
2
3
4
5
6
7
8
9
FAN2(FAN)
FAN1(FAN)
BLU
WHT
ORN
RED
YLW
6
WHT
WHT
SKY BLU
PINK
GRY
VLT
BLU
YLW
ORN
RED
BRN
YLW
YLW
236 123456789
w
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8
5REFRIGERANT SYSTEM DIAGRAM
Pipe temperature
thermistor/liquid
(RT12)
Distributor
with strainer
#50
Condenser/evaporator
temperature thermistor
(RT13)
Room temperature
thermistor (RT11)
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-A09AR.TH
SLZ-A12AR.TH
SLZ-A18AR.TH
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9
TROUBLESHOOTING
6
6-1. Cautions on troubleshooting
(1) Before troubleshooting, check the followings:
1Check the power supply voltage.
2Check the indoor/outdoor connecting wire for mis-wiring.
(2) Take care the followings during servicing.
1Before servicing the air conditioner, be sure to first turn off the remote controller to stop the main unit, and then turn
off the breaker.
2When removing the indoor controller board, hold the edge of the board with care NOT to apply stress on the
components.
3When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires.
Operation lamp
6-2. Trouble display
Blinking frequency of operation lamp shows the details of trouble of the indoor and the outdoor units.
Mis-wiring1
blinking
2
blinking
Indoor-outdoor
signal error
Wiring between the indoor and
outdoor is coming off.
Difference of wiring polarity
between the indoor and outdoor.
Trouble of the outdoor inverter
P.C. board.
Check the wiring out between the indoor and
outdoor.
Check the outdoor inverter P.C. board. Refer to the
TECHNICAL & SERVICE MANUAL of outdoor unit.
Trouble of the Indoor controller
board. Exchange the Indoor controller board.
Pipe temperature thermistor
/ Liquid. Mis-connecting of the pipe temperature thermistor / Liquid. Reinsert the connector (CN21).
Trouble of the pipe temperature
thermistor / Liquid.
Trouble of the Indoor controller
board. Exchange the Indoor controller board.
Check the resistance value of the thermistor.
Room temperature
thermistor Mis-connecting of the room temperature thermistor. Reinsert the connector (CN20).
Trouble of the room temperature
thermistor.
Trouble of the Indoor controller
board. Exchange the Indoor controller board.
Check the resistance value of the thermistor.
Condenser / evaporator
temperature thermistor Mis-connecting of the condenser / evaporator temperature thermistor. Reinsert the connector (CN29).
Trouble of the condenser / evaporator
temperature thermistor.
Trouble of the Indoor controller
board. Exchange the Indoor controller board.
Check the resistance value of the thermistor.
Drain sensor Mis-connecting of the indoor drain
sensor Reinsert the connector (CN31).
Trouble of the indoor drain sensor
Trouble of the Indoor controller
board. Exchange the Indoor controller board.
Check the resistance value of the thermistor.
Phenomenon
Blinking
frequency
Cause Countermeasure
(1) Incase of being indicated irregularity on the self diagnoses.
To be continued on the next page.
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10
(2) Other case
3
blinking
5,7,10
blinking
6
blinking
9
blinking
Freezing protection is
working. 1) Short cycle of air cycle
2) Dirty air filter
3) Damaged fan
4) Abnormal refrigerant
1) Clear obstructions from air cycle.
2) Clean the air filter
3) Check the fan
4) Check the refrigerant temperature.
Malfunction of outdoor unit Malfunction of outdoor unit Refer to the TECHNICAL & SERVICE MANUAL
of outdoor unit.
Malfunction of drain pump 1) Malfunction of drain pump
2) Damaged drain sensor 1) Check the drain pump. 2) Check the drain sensor.
(Check the drop of water is on.)
If the resistance is normal, replace the indoor
controller board.
Outdoor thermistor Mis-connecting of the outdoor
thermistor. Reinsert the connector.
Trouble of the outdoor thermistor.
Trouble of the outdoor inverter P.C.
board. Exchange the outdoor inverter P.C. board.
Check the resistance value of the thermistor.
Phenomenon
Blinking
frequency
Cause Countermeasure
Not working of remote
controller switch ON/OFF
Short circuit the protecting parts in the
Indoor controller board.
Trouble of the Indoor controller board. Check the Indoor controller board out.
Trouble of the remote controller.
Check the varistor (ZNR1) and fuse (FUSE) out in
the Indoor controller board.
Exchange the remote controller.
Wiring between the indoor and outdoor is
coming off.
Working the Indoor units
and not working the outdoor
units.
Check the wiring out between the indoor and
outdoor.
Difference of wiring polarity between the
indoor and outdoor.
Trouble of the outdoor inverter P.C. board.
Trouble of the contactor (52C). Exchange the contactor.
Check the outdoor inverter P.C. board.
Malfunction of outdoor unit. Refer to the TECHNICAL & SERVICE MANUAL of
outdoor unit.
Fan motor connector is coming off.
Not rotating the fan in the
indoor unit.
Trouble of the Indoor controller board.
Check the fan motor output of the Indoor controller
board.
Check the connector out.
Trouble of the fan motor. Check the resistance value between the each tap
of fan motor.
A connector attaching the panel to the body
is not connected.
Horizontal vane doesn't work.
Check if the connector for vane motor is connected.
Connect it.
A connector attaching the panel to the body
is not connected.
Fixing of horizontal vane.
Connect it.
Phenomenon Cause Countermeasure
From the preceding page.
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