Mitsubishi Electric Mr. Slim MSZ-A09NA User manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································4
4. OUTLINES AND DIMENSIONS ·························6
5. WIRING DIAGRAM ············································8
6. REFRIGERANT SYSTEM DIAGRAM················9
7. SERVICE FUNCTIONS ····································10
8. TROUBLESHOOTING······································11
9. DISASSEMBLY INSTRUCTIONS ····················25
10. PARTS LIST······················································30
10-1. PARTS LIST·············································30
10-2. RoHS PARTS LIST··································36
11. MICROPROCESSOR CONTROL·····················42
Wireless type
Models
MSZ-A09NA
MSZ-A12NA
MSZ-A15NA
MSZ-A17NA
MSZ-A24NA
MSY-A15NA
MSY-A17NA
MSY-A24NA
No. OB450
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MSZ-A09NA MSY-A15NA
MSZ-A12NA MSY-A17NA
MSZ-A15NA
MSZ-A17NA
INDOOR UNIT
Outdoor unit service manual
MUZ-A·NA Series (OB451)
MXZ-A·NA Series (OB444)
NOTE:
This service manual describes technical data of the intdoor units.
RoHS compliant products have <G> mark on the spec name plate.
For servicing of RoHS compliant products, refer to the PARTS
LIST (RoHS compliant).
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2
1TECHNICAL CHANGES
MSZ09UN ➔MSZ-A09NA
MSZ12UN ➔MSZ-A12NA
MSH15TN ➔MSZ-A15NA
MSH17TN ➔MSZ-A17NA
MSH24WN ➔MSZ-A24NA
MS15TN ➔MSY-A15NA
MS17TN ➔MSY-A17NA
MS24WN ➔MSY-A24NA
1.Control method between indoor and outdoor has been changed.
2.Indoor fan motor has been changed.
3.Signal of remote controller has been changed. (It is not available for conventional models.)
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3
PART NAMES AND FUNCTIONS
2
MSZ-A09NA MSY-A15NA
MSZ-A12NA MSY-A17NA
MSZ-A15NA
MSZ-A17NA
MSZ-A24NA
MSY-A24NA
MSZ-A09NA
MSZ-A12NA
MSZ-A15NA
MSZ-A17NA
MSY-A15NA
MSY-A17NA
Line flow fan
Air outlet
Vertical vane
Air inlet
Display section
Front panel
Panel Heat exchanger
Horizontal vane
Operation section
(When the front panel is opened)
Remote controller
Remote control
receiving section
Catechin air filter
Air cleaning filter
(Anti-Allergy Enzyme
Filter, Blue bellows
type)
Emergency operation switch
Emergency operation switch
Operation indicator lamp
Remote control
receiving section
Operation Indicator
lamp
MSZ-A24NA
MSY-A24NA
ACCESSORIES
1
2
3
4
5
6
7
8
Installation plate
Installation plate fixing screw 4 o25 mm
Remote controller holder
Fixing screw for 3o3.5 o1.6 mm (Black)
Battery (AAA) for remote controller
Wireless remote controller
Felt tape (Used for left or left-rear piping)
Conduit plate
1
7
1
2
2
1
1
–
1
8
1
2
2
1
1
1
MSZ-A24NA
MSY-A24NA
MSZ-A09NA MSZ-A17NA
MSZ-A12NA MSY-A15NA
MSZ-A15NA MSY-A17NA
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4
3SPECIFICATION
NOTE : Test conditions are based on ARI 210/240.
❈1 : Rating conditions(cooling) — Indoor : 80˚FDB, 67˚FWB, Outdoor : 95˚FDB, (75˚FWB)
(heating) — Indoor : 70˚FDB, 60˚FWB, Outdoor : 47˚FDB, 43˚FWB
❈2 : (heating) — Indoor : 70˚FDB, 60˚FWB, Outdoor : 17˚FDB, 15˚FWB
Item Model MSZ-A12NA
INDOOR UNIT MODEL
External finish
Power supply
Max. fuse size (time delay)/ Disconnect switch
Min. circuit ampacity
Fan motor
Airflow Low—Med.—High
Moisture removal
Sound level Low-Med.-High
Cond. drain connection O.D.
Dimensions
Weight
REMOTE CONTROLLER
Control voltage (by built-in transformer)
V, phase, Hz
A
A
F.L.A
CFM
CFM
pt./h
dB(A)
in.
in.
in.
in.
Ib.
MSZ-A12NA
1.0
0.76
353-240-159
353(318)-240(215)-152(134)
3.2
22-34-42
23
MSZ-A09NA
1.0
0.76
307-222-159
307(275)-229(205)-152(134)
2.3
22-33-38
23
White
208/230, 1, 60
15
5/8
30-11/16
8-1/4
11-3/4
Wireless type
12-24V DC
MSZ-A09NA
HEAT Dry
COOL Dry (Wet)
W
D
H
Item Model MSZ-A17NA MSY-A17NA
INDOOR UNIT MODEL
External finish
Power supply
Max. fuse size (time delay)/ Disconnect switch
Min. circuit ampacity
Fan motor
Airflow Low—Med.—High
Moisture removal
Sound level Low-Med.-High
Cond. drain connection O.D.
Dimensions
Weight
REMOTE CONTROLLER
Control voltage (by built-in transformer)
V, phase, Hz
A
A
F.L.A
CFM
CFM
pt./h
dB(A)
in.
in.
in.
in.
Ib.
1.0
0.76
381(342)-328(293)-268(240)
5.1
23
1.0
0.76
381(342)-328(293)-268(240)
4.7
23
381-314-254
34-40-45/34-38-44
—
34-40-45/ —
381-314-254
34-40-46/34-38-44
—
34-40-46/ —
White
208/230, 1, 60
15
5/8
30-11/16
8-1/4
11-3/4
Wireless type
12-24V DC
MSZ-A15NA MSY-A15NA
HEAT Dry
COOL Dry (Wet)
W
D
H
HEAT Dry
COOL Dry (Wet)
W
D
H
Item Model MSY-A24NA
INDOOR UNIT MODEL
External finish
Power supply
Max. fuse size (time delay)/ Disconnect switch
Min. circuit ampacity
Fan motor
Airflow Low—Med.—High
Moisture removal
Sound level Low-Med.-High
Cond. drain connection O.D.
Dimensions
Weight
REMOTE CONTROLLER
Control voltage (by built-in transformer)
V, phase, Hz
A
A
F.L.A
CFM
CFM
pt./h
dB(A)
in.
in.
in.
in.
Ib.
MSY-A24NA
1.0
0.76
—
568(508)-431(385)-296(265)
7.3
34-40-49/ —
37
MSZ-A24NA
1.0
0.76
568-486-296
568(508)-431(385)-296(265)
7.3
34-40-49/34-40-48
37
White
208/230, 1, 60
15
5/8
43-5/16
10-1/4
12-13/16
Wireless type
12-24V DC
MSZ-A24NA
(Cooling/Heating)
(Cooling/Heating)
MSZ-A15NA MSY-A15NA MSZ-A17NA MSY-A17NA
-
-
-
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5
MSZ-A09NA
MSZ-A12NA
MSZ-A15NA
MSZ-A15NA
MSY-A15NA
MSZ-A17NA
MSZ-A17NA
MSY-A17NA
MSZ-A24NA
MSZ-A24NA
MSY-A24NA
Model Mode
HEAT
COOL
HEAT
COOL
HEAT
COOL
HEAT
COOL
HEAT
COOL
307
307
275
353
353
318
381
381
342
381
381
342
568
568
508
16.8
16.8
15.1
19.3
19.3
17.4
20.9
20.9
18.8
20.9
20.9
18.8
20.2
20.2
18.1
23.4
23.4
21.0
26.7
26.7
24.1
28.8
28.8
26.0
28.8
28.8
26.0
34.4
34.4
30.9
Air flow
(CFM) Air speed (ft./sec.) Coverage range (ft.)
Function
Dry
Dry
Wet
Dry
Dry
Wet
Dry
Dry
Wet
Dry
Dry
Wet
Dry
Dry
Wet
3-1. OPERATING RANGE
(1) POWER SUPPLY
MSZ-A09NA MSY-A15NA
MSZ-A12NA MSY-A17NA
MSZ-A15NA MSY-A24NA
MSZ-A17NA
MSZ-A24NA
Rated voltage Guaranteed VoltageModel
Min. 198V Max. 253V
208V 230V
208/230V 1phase 60Hz
3-2. OUTLET AIR SPEED AND COVERAGE RANGE
(2) OPERATION
78% —
Function
Cooling
Heating
Standard temperature
Maximum temperature
Minimum temperature
Maximum humidity
Standard temperature
Maximum temperature
Minimum temperature
DB (˚F)
80
95
67
70
80
70
WB (˚F)
67
71
57
60
67
60
Indoor
DB (˚F)
95
115
14
47
75
14
WB (˚F)
—
—
—
43
65
13
Outdoor
Condition
Intake air
temperature
●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
varies according to the size of the room
and furniture arranged inside the room.
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4OUTLINES AND DIMENSIONS
Unit : inch
11-3/4
424-9/16
30-11/16
8-1/4 3/16
2-1/8
3/4
6-1/4
2-5/16
Air in
Air out
Installation plate
Insulation [1-1/8
Drain hose [5/8
(Connected part O.D)
Liquid line [1/4 19-11/16
Gas line [3/8 16-15/16
Insulation [1-3/8 O.D
[3/4 I.D
{
6-1/8 6-1/8
7/8
1-3/4
13-3/16 12-5/8
1-5/8 8-7/16
10-1/8
1-11/16
8-7/16
1/8 11-5/16
2-3/4
2-3/16
2-3/16 2-3/16
8-7/8 8-7/8
9/1610-3/4
9-3/16
Wall hole [2-9/16
Indoor unit
Installation plate
7/16x13/16 Oblong hole
7/16x1 Oblong hole
7/8
hole
MSZ-A09NA MSY-A15NA
MSZ-A12NA MSY-A17NA
MSZ-A15NA
MSZ-A17NA
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10-1/4
6-1/4
3/4
2-5/16
1-7/8
5/16
12-3/8
10-1/161-7/8
1/8
3-7/8
6-13/16
3-7/8 6-13/16 16-5/16 16-5/16
3/16
9-15/16
31-1/8
2-3/16
42-1/16
43-5/16
12-13/16
Air out
Air in
Insulation [1-1/8
Drain hose [5/8
(Connected part O.D)
Installation plate
Wall hole [3
Wireless remote controller
Installation plate Indoor unit
{
Liquid line [1/4 19-11/16
Gas line [5/8 16-15/16
Insulation [1-15/16 O.D
[1-1/4 I.D
MSZ-A24NA
MSY-A24NA Unit : inch
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5WIRING DIAGRAM
MSZ-A09NA MSY-A15NA
MSZ-A12NA MSY-A17NA
MSZ-A15NA
MSZ-A17NA
MSZ-A24NA
MSY-A24NA
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REFRIGERANT SYSTEM DIAGRAM
6
MSZ-A09NA
MSZ-A12NA
Indoor
heat
exchanger
Flared connection
Room temperature
thermistor
RT11
Indoor coil
thermistor
RT13(sub)
Flared connection
Refrigerant pipe [3/8
(with heat insulator)
Refrigerant pipe [1/4
(with heat insulator)
Indoor coil
thermistor
RT12(main)
Refrigerant flow in cooling
Refrigerant flow in heating
MSZ-A15NA MSY-A15NA
MSZ-A17NA MSY-A17NA
Indoor
heat
exchanger
Room temperature
thermistor
RT11
Refrigerant pipe [1/2
(with heat insulator)
Flared connection
Flared connection
Indoor coil
thermistor
RT12(main)
Refrigerant pipe[1/4
(with heat insulator)
Distributor
MSZ-A24NA
MSY-A24NA
Indoor
heat
exchanger
Room temperature
thermistor
RT11
Refrigerant pipe [5/8
(with heat insulator)
Flared connection
Flared connection
Indoor coil
thermistor
RT12(main)
Refrigerant pipe [1/4
(with heat insulator)
Distributor
Unit:inch
Indoor coil
thermistor
RT13(sub)
Indoor coil
thermistor
RT13(sub)
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7SERVICE FUNCTIONS
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.
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 8-7.)
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.)
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.
How to modify the remote controller P.C. board
Remove batteries before modification.
The board has a print as shown below :
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.
NOTE : For remodelling, take out
the batteries and press the
OPERATE/STOP(ON/OFF)
button twice or 3 times at
first.
After finish remodelling,
put back the batteries then
press the RESET button.
J2
J1
MSZ-A09NA MSZ-A12NA MSZ-A15NA MSZ-A17NA MSZ-A24NA
MSY-A15NA MSY-A17NA MSY-A24NA
No. 1 unit
No. 2 unit
No. 3 unit
No. 4 unit
1 unit operation
No modification
–
–
–
2 units operation
Same as at left
Solder J1
–
–
3 units operation
Same as at left
Same as at left
Solder J2
–
4 units operation
Same as at left
Same as at left
Same as at left
Solder both J1 and J2
Table 1
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