Mitsubishi Electric MSZ-A09RV User manual

SERVICE MANUAL
Wireless type
Models
No. OB230
REVISED EDITION-A
SPLIT-TYPE, HEAT PUMPAIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGES ···································2
2. PART NAMES AND FUNCTIONS······················4
3. SPECIFICATION·················································6
4. NOISE CRITERIA CURVES·······························8
5. OUTLINES AND DIMENSIONS ·························9
6. WIRING DIAGRAM ··········································10
7. REFRIGERANT SYSTEM DIAGRAM··············12
8. PERFORMANCE CURVES······························13
9. MICROPROCESSOR CONTROL ····················23
10. SERVICE FUNCTIONS·····································38
11. TROUBLESHOOTING······································40
12. DISASSEMBLY INSTRUCTIONS·····················57
13. PARTS LIST······················································61
MSZ-A09RV - (WH)●MUZ-A09RV -
MSZ-A12RV - (WH)●MUZ-A12RV - E1E1
E1E1
Revision:
●A number of drainage holes of MUZ-A09RV- and MUZ-A12RV- has been increased.
●Compressors of MUZ-A09RV- and MUZ-A12RV- has been changed.(SNB092FBA ➔SNB092FJAH)
●SPECIFICATION, OUTLINES AND DIMENSIONS and PARTS LIST have been partially modified.
● Please void OB230.
E1E1
E1E1
OB230-1.qxp 02.5.28 7:36 PM Page 1

1 TECHNICAL CHANGES
2
INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT
• This room air conditioner adopts R410A of HFC refrigerant which never destroys the ozone layer.
Pay attention following points.
1As R410A working pressure is 1.6 times higher than that of R22 of previous refrigerant, dedicated tools and piping are
required.
2R410A is more affected by water and contaminations than R22. Keep R410A away from water and contaminations during
storage and while installing.
3Use clean dedicated piping materials for R410A only which are strong enough against R410A pressure. Never use any
current pipes designed for R22.
4Composition change may occur in R410A since it is a mixed refrigerant. When charging, charge liquid refrigerant to prevent
composition change.
Lubricant Refrigerant
New refrigerant
R410A
HFC-32: HFC-125 (50%:50%)
Pseudo-azeotropic refrigerant
Not included
A1/A1
72.6
-51.4
1.557
64
Non combustible
0
1730
From liquid phase in cylinder
Possible
Incompatible oil
Non
Non
Previous refrigerant
R22
R22 (100%)
Single refrigerant
Included
A1
86.5
-40.8
0.94
44.4
Non combustible
0.055
1700
Gas phase
Possible
Compatible oil
Light yellow
Non
Refrigerant
Composition (Ratio)
Refrigerant handling
Chlorine
Safety group (ASHRAE)
Molecular weight
Boiling point (:)
Steam pressure [25:](Mpa)
Saturated steam density [25:](Kg/K)
Combustibility
ODP w1
GWP w2
Refrigerant charge method
Additional charge on leakage
Kind
Color
Smell
New Specification Current Specification
w1:Ozone Destruction Parameter : based on CFC-11
w2 :Global Warmth Parameter : based on CO2
The incompatible lubricant easily separates from refrigerant
and is in the upper layer inside the suction muffler.
Raising position of the oil back hole enables to back the
lubricant of the upper layer to the compressor.
Since refrigerant and lubricant are compatible each, lubricant
backs to the compressor through the lower position oil back
hole.
Compressor
Suction muffler
Oil back hole
Lubricant
Refrigerant
Compressor
Suction muffler
Oil back hole
Lubricant /Refrigerant
Compressor
NOTE : The unit of pressure has been changed to MPa on the international system of units(SI unit system).
The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/ff[Gauge])
OB230-1.qxp 02.5.28 7:36 PM Page 2

3
-30 -20 -10 0 10 20 30 40 50 60
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
(MPa [Gauge])
R410A
R22
Conversion chart of refrigerant temperature and pressure
Saturated liquid pressure
(;)
NOTE : The unit of pressure has been changed to MPa on the
international system of units(SI unit system).
The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/ff[Gauge])
1.Tools dedicated for the air conditioner with R410A refrigerant
The following tools are required for R410A refrigerant. Some R22 tools can be substituted for R410A tools.
The diameter of the service port on the outdoor unit operation valve has been changed to prevent improper refrigerant
charging. Cap size has also been changed from 7/16 UNF with 20 threads to 1/2 UNF with 20 threads.
2.Refrigerant piping
1Specifications
Use the refrigerant pipes that meet the following specifications.
• Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.7 mm or less, as the pressure resistance is in
sufficient.
2Flaring work and flare nut
Flaring work for R410A pipes differs from that for the existing refrigerant pipes.
For details of flaring work, refer to Installation manual “6-1 FLARING WORK”.
R410A tools Can R22 tools be used?
Gas leak detector
R410A pressures beyonds the measurement range of R22
gauges. Port diameters have been changed to prevent other kinds of
refrigerant from being charged into the units.
Hose material and cap size have been changed to improve the pressure
resistance.
Dedicated for HFC refrigerant.
1/4 and 3/8 wrenches can be used for both R22 and R410A units.
Description
Clamp bar hole has been enlarged to reinforce the spring strength in the tool.
Provided for flaring work (to be used with R22 flare tool).
Provided to prevent the back flow of oil. This adapter enables you to use
vacuum pumps.
It is difficult to measure R410Awith a charging cylinder because the
refrigerant bubbles due to high pressure and high-speed vaporization
No
No
No
Yes
Yes
Newly required
Newly required
Newly required
Gauge manifold
Charge hose
Torque wrench
Flare tool
Flare gauge
Vacuum pump
adapter
Electronic scale for
refrigerant charging
No : Not Substitutable for R410A Yes : Substitutable for R410A
Wall
thickness
Outside diameter
Pipe mm inch
For liquid
For gas 6.35
9.52 1/4 3/8 0.8 mm
0.8 mm Heat resisting foam plastic
Specific gravity 0.045 Thickness 8 mm
Insulation material
OB230-1.qxp 02.5.28 7:36 PM Page 3

4
2PART NAMES AND FUNCTIONS
INDOOR UNIT
MSZ-A09RV-
MSZ-A12RV- E1
E1
Emergency operation switch
Display section
Power monitor lamp Receiving section
Grille
Air cleaning
filter(white bellows
type)
Deodorizing filter
(gray sponge type)
Air filter
Vertical vanes
Air inlet
to Breaker
Remote control
receiving section
Horizontal vane
Remote
controller
Operation section (When the grille is opened)
Power supply cord
Front panel
Electronic scale for refrigerant charging
Outdoor unit
Gas cylinder
Valve
Refrigerant gas cylinder
for R410A with siphon
Liquid
3Optional extension pipe for R410A
3.Refrigerant oil
Apply the special refrigeration oil (accessories) to the flare and the union seat surfaces.
4.Air purge
Use the vacuum pump for air purging for the purpose of environmental protection.
5.Additional charge
For additional charging, charge the refrigerant from liquid phase of the gas cylinder. If the refrigerant is charged from the
gas phase, composition change may occur in the refrigerant inside the cylinder and the outdoor unit. However, charging the
liquid refrigerant all at once may cause the compressor to be locked. Thus, charge the refrigerant slowly.
3m
5m
7m
10m
12m
([6.35/[9.52)
([6.35/[9.52)
([6.35/[9.52)
([6.35/[9.52)
([6.35/[9.52)
MAC-A00PI
MAC-A01PI
MAC-A02PI
MAC-A03PI
MAC-A04PI
OB230-1.qxp 02.5.28 7:36 PM Page 4

5
REMOTE CONTROLLER
Signal transmitting section
Operation display section
OPERATE /STOP
(ON /OFF)button
OPERATION SELECT button
FAN SPEED CONTROL button
ON-TIMER button
CLOCK SET button
HR. button
MIN. button
(TIME SET button)
TEMPERATURE buttons
VANE CONTROL button
OFF-TIMER button
RESET button
ON/OFF TOO
WARM TOO
COOL
HR. MIN.
CLOCK
RESET
CLOCK
MODE
FAN VANE
START STOP
ECONO COOL button
ECONO COOL
I FEELCOOL DRY HEAT
600 1 100
AM PM
SWING SWING button
MUZ-A09RV-
MUZ-A12RV- E1
E1
OUTDOOR UNIT Air inlet (back and side)
Air outlet
Drain outlet
Piping
Drain hose
MSZ-A09RV-
MSZ-A12RV- E1
E1
OB230-1.qxp 02.5.28 7:36 PM Page 5

6
3SPECIFICATION
Indoor model
Function
Power supply
Capacity
Air flow(High)
Dehumidification
Power outlet
Running current
Power input
Auxiliary heater
Power factor
Starting current
Fan motor current
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Air direction
Sound level (High)
Fan speed (High)
Fan speed regulator
RT11(at25:)
Thermistor RT12(at25:)
RT13(at25:)
Outdoor model
Outdoor air flow
Compressor motor current
Fan motor current
Model
Output
Winding
resistance(at20:)
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Sound level
Fan speed
Fan speed regulator
Refrigerant filling
capacity(R410A)
Refrigerating oil (Model)
RT61(at100:)
Thermistor RT62(at0:)
RT64(at50:)
kW
K/h
R/h
A
A
W
A(kW)
%
A
A
"
mm
kg
dB
rpm
k"
k"
k"
K/h
A
A
W
"
"
mm
kg
dB
rpm
kg
cc
k"
k"
k"
MSZ-A09RV - E1
Single phase
220-240V,50Hz
10
—
99
4.55 - 4.17
0.17
RC4V19-BA
WHT-BLK 292.4
BLK-RED 324.6
850O278O191
10
5
3
10
10
10
MUZ-A09RV - E1
0.27-0.25
SNB092FJAH
700
U-V 0.93 U-W 0.93
V-W 0.93
RA6V28-CA
WHT-BLK 197
BLK-RED 315 YLW-BLK 13
710(+69)o540o255
34
2
1.10
450 (NEO22)
13.4
32.6
17
Cooling
2.6 (0.9-3.3)
516
1.2
3.67-3.37
800 (250-1180)
36
920
1440
6.9
3.25
45
670
Heating
3.6 (0.9-4.8)
540
—
4.55-4.17
990 (250-1650)
35
950
1530
7.4
3.64
47
700
MSZ-A12RV - E1
Single phase
220-240V,50Hz
10
—
99
7.25 - 6.65
0.19
RC4V19-BA
WHT-BLK 292.4
BLK-RED 324.6
850O278O191
10
5
3
10
10
10
MUZ-A12RV - E1
0.27-0.25
SNB092FJAH
900
U-V 0.93 U-W 0.93
V-W 0.93
RA6V28-CA
WHT-BLK 197
BLK-RED 315 YLW-BLK 13
710(+69)o540o255
34
2
1.10
450 (NEO22)
13.4
32.6
17
Cooling
3.4 (0.9-3.8)
588
1.6
5.60 - 5.13
1220 (250 - 1580)
39
1020
1440
7.4
2.79
46
670
Heating
4.8 (0.9-6.1)
642
—
7.25 - 6.65
1580 (250 - 2050)
39
1100
1530
8.1
3.04
48
700
Electrical data
Fan motor
Special remarks
Compressor
Electrical
data
Fan motor
Special remarks
Coefficient of performance(C.O.P)
Capacity
Capacity
NOTE : Test conditions.
Cooling : Indoor DB27:WB19:
Outdoor DB35:WB24:
Heating : Indoor DB 20:WB -:
Outdoor DB 7:WB 6:
OB230-1.qxp 02.5.28 7:36 PM Page 6

7
1.5+ 440V
MP24GA 12V 300"
ERZV10D471
S201DH1Y
4P
JM1aN-ZTMP-DC12V
93.5:5A 250V
136:i3: 2A
250V 3.15A
500+ 450V
1.8+ 440V
RR-18
250V 2A
13A 1.0mH
EM43240
50m"5W
100"20W
4P
PS21101-AL / PS21204-A
G4U-1-E
G4U-1-E
LB6 250V AC
PMA10001
G4A-1A-P-PS
INDOOR UNIT
OUTDOOR UNIT
Item Model
Model
Item
Indoor fan capacitor
Vane motor
Varistor (NR11)
Semiconductor relay
Terminal block
Relay (compressor) (52C)
Terminal block thermal Fuse
Indoor fan motor thermal fuse
Fuse (F11)
Smoothing capacitor (C61,C62)
Outdoor fan capacitor (C65)
Current transformer (CT61)
Fuse (F801, F901)
Reactor (L64)
Noise filter
Current detecting resistor (R61, 62, 64)
Current limiting resistor (R65)
Terminal block
Intelligent power module
Relay (X61)
Relay (X62)
R.V. coil
Power factor controll module
Rush current limiting relay
MSZ-A09RV
MSZ-A12RV
MUZ-A09RV
MUZ-A12RV
Specifications and rating conditions of main electric parts
OB230-1.qxp 02.5.28 7:36 PM Page 7

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 re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions.
Cooling : DB27:WB19:
Heating : DB20:WB -:
MSZ-A09RV- E1
HEATING
NOTCH
35
COOLING 36
SPL(dB(A)) LINE
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 re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions.
Cooling :DB35:WB24:
Heating :DB 7:WB 6:
MUZ-A09RV- E1
HEATING
NOTCH
47
COOLING 45
SPL(dB(A)) LINE
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 re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions.
Cooling : DB27:WB19:
Heating : DB20:WB -:
MSZ-A12RV- E1
HEATING
COOLING
NOTCH
39
SPL(dB(A)) LINE
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 re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions.
Cooling :DB35:WB24:
Heating :DB 7:WB 6:
MUZ-A12RV- E1
HEATING
NOTCH
48
COOLING 46
SPL(dB(A)) LINE
4NOISE CRITERIA CURVES
8
OB230-1.qxp 02.5.28 7:36 PM Page 8

9
116.581.5
818
278
850
16562956
or more
100
41
2.5
42
271 4.5
231.5
82 169
326 326
5
189
56
160
17.5
Air in
Air out Insulation [28
Drain hose [16
(Connected part O.D)
Installation plate
Wall hole [65
Indoor unit
Installation plate
Power supply cord
Lead to right 1.0m
Lead to left 0.3m
Wireless remote controller
Liquid line [6.35-0.5m
Gas line [9.52-0.43m
Insulation [37 O.D
[21 I.D
78
67
7
{
OUTLINES AND DIMENSIONS5
Liquid refrigerant pipe joint
Refrigerant pipe (flared) [6.35
Service panel
Gas refrigerant pipe joint
Refrigerant pipe (flared) [9.52
Service port
Bolt pitch for installation
Handle
Air out
Air in Drainage hole [28
4 holes 10o21
18
500
710
265
105 69 138
20
40
If both sides or back
side is vacant. only
to be free 500mm in
front of a unit
Air in
265
REQUIRED SPACE
If a front side or both sides
is vacant. an upper side of
a unit has only to be vacant
100mm.
Drainage hole [28
127
32.4
92
367495
Drainage hole [28
33
32.5 255
35.4
285 320
155
90
43-
35-
540
270
10
350mm or more
500mm or more
100mm or more
100mm or more
Drainage hole [28
100mm or more
MSZ-A09RV-
MSZ-A12RV- E1
E1
MUZ-A09RV-
MUZ-A12RV- E1
E1
INDOOR UNIT
OUTDOOR UNIT
OB230-1.qxp 02.5.28 7:36 PM Page 9

10
6 WIRING DIAGRAM
INDOOR UNIT
MSZ-A09RV- MSZ-A12RV- MODELS WIRING DIAGRAM
E1E1
POWER
SUPPLY
CORD
~/N 220-240V
50Hz
GRN/YLW
BLK
GRY
YLW
BRN
WHT
RED
MF
1
2
3
4
5
6
3
SR141 3
2
1
CN
121
C11
HIC1
TRANS
MV2
RT13
4
3
2
1
CN112
151
CN
MV1
10
RT12
RT11
111
CN
CN211
NR11
ELECTRONIC CONTROL P.C. BOARD
F11
220-240V~
BRN
TB
L
3
2
N
BLU
BRN
WHT
BLU
F12RED
BLU
BLU 1
2
BLU 1
2
3
CN201 3
452C
PE
CIRCUIT BREAKER
12V
TO OUTDOOR
UNIT
CONNECTING
GREEN SIGN
MONITOR
P.C.BOARD
11 CN
1J1
REMOTE
CONTROLLER
POWER MONITOR,
RECEIVER
P.C.BOARD
5
LD101T
SYMBOL
C11
F11
F12
HIC1
MF
MV1
MV2
SYMBOL
NR11
RT11
RT12
RT13
SYMBOL
SR141
TB
52C
NAME
INDOOR FAN CAPACITOR
FUSE (3.15A)
THERMAL FUSE (93:)
DC/DC CONVERTER
INDOOR FAN MOTOR
VANE MOTOR (HORIZONTAL)
VANE MOTOR (VERTICAL)
NAME
VARISTOR
ROOM TEMPERATURE
THERMISTOR
INDOOR COIL
THERMISTOR (MAIN)
INDOOR COIL
THERMISTOR (SUB)
NAME
SOLID STATE RELAY
TERMINAL BLOCK
CONTACTOR
GRN/YLW
NOTE:1. About the outdoor side electric wiring refer to the outdoor unit electric wiring diagram for servicing.
2. Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
OB230-1.qxp 02.5.28 7:36 PM Page 10