Mitsubishi Electric MSZ-A09RV, MSZ-A12RV, MUZ-A09RV, MUZ-A12RV Service Manual

SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
Wireless type Models
No. OB230
REVISED EDITION-A
MSZ-A09RV -
MSZ-A12RV -
(WH)
MUZ-A09RV -
(WH)
MUZ-A12RV -
CONTENTS
2. PART NAMES AND FUNCTIONS······················4
3. SPECIFICATION·················································6
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
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
1 TECHNICAL CHANGES
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 CO
2
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
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.
1 As R410A working pressure is 1.6 times higher than that of R22 of previous refrigerant, dedicated tools and piping are
required.
2 R410A is more affected by water and contaminations than R22. Keep R410A away from water and contaminations during
storage and while installing.
3 Use clean dedicated piping materials for R410A only which are strong enough against R410A pressure. Never use any
current pipes designed for R22.
4 Composition change may occur in R410A since it is a mixed refrigerant. When charging, charge liquid refrigerant to prevent
composition change.
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])
2
-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
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 R410A with 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
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
1 Specifications
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.
2 Flaring 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”.
3
3 Optional extension pipe for R410A
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
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.
Gas cylinder
2
PART NAMES AND FUNCTIONS
MSZ-A09RV­MSZ-A12RV-
INDOOR UNIT
Air cleaning filter(white bellows type)
Deodorizing filter (gray sponge type)
Air filter
Front panel
Vertical vanes
Outdoor unit
Valve
Refrigerant gas cylinder for R410A with siphon
Electronic scale for refrigerant charging
E1 E1
Grille
Air inlet
to Breaker
Power supply cord
Remote control receiving section
Horizontal vane
Liquid
Operation section
(When the grille is opened)
Emergency operation switch
Remote controller
Display section
Power monitor lamp
Receiving section
4
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 FEEL
COOL DRY HEAT
6 00 1
1 00
AM
PM
SWING
SWING button
MUZ-A09RV­MUZ-A12RV-
E1 E1
OUTDOOR UNIT
Air inlet (back and side)
Piping
Drain hose
Air outlet
Drain outlet
MSZ-A09RV­MSZ-A12RV-
E1 E1
REMOTE CONTROLLER
5
3
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
SPECIFICATION
NOTE : Test conditions.
Cooling : Indoor DB27: WB19: Heating : Indoor DB 20: WB -:
Outdoor DB35: WB24: Outdoor DB 7: WB 6:
6
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
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
4
NOISE CRITERIA CURVES
8
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
367
495
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-A09RV­MSZ-A12RV-
INDOOR UNIT
E1 E1
MUZ-A09RV­MUZ-A12RV-
E1 E1
OUTDOOR UNIT
9
6 WIRING DIAGRAM
MSZ-A09RV- MSZ-A12RV- MODELS WIRING DIAGRAM
E1E1
INDOOR UNIT
TO OUTDOOR UNIT CONNECTING
12V
220-240V~
POWER SUPPLY CORD ~/N 220-240V 50Hz
PE
CIRCUIT BREAKER
TB
L
BRN
BRN
3
2
WHT
N
BLU
BLU
GRN/YLW
RED
F12
GRN/YLW
GREEN SIGN MONITOR P.C.BOARD
11
BLU BLU
1 2
BLU
CN
1J1
CN
151
CN201
3 2 1
LD101T
10
MV1
MV2
3
4
ELECTRONIC CONTROL P.C. BOARD
5
POWER MONITOR, RECEIVER P.C.BOARD
52C
HIC1
TRANS
F11
NR11
SR141
REMOTE CONTROLLER
C11
4 3 2
1
CN112
CN
121
1 2 3
CN211
CN 111
RT13 RT12
BLK
3
GRY YLW BRN WHT RED
1 2 3
MF
4 5 6
RT11
SYMBOL C11 F11 F12 HIC1 MF MV1 MV2
NOTE:1. About the outdoor side electric wiring refer to the outdoor unit electric wiring diagram for servicing.
INDOOR FAN CAPACITOR FUSE (3.15A) THERMAL FUSE (93:) DC/DC CONVERTER INDOOR FAN MOTOR VANE MOTOR (HORIZONTAL) VANE MOTOR (VERTICAL)
2. Use copper conductors only. (For field wiring)
3. Symbols below indicate. /: Terminal block, : Connector
NAME
SYMBOL NR11
RT11
RT12
RT13
NAME VARISTOR ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR (MAIN) INDOOR COIL THERMISTOR (SUB)
SYMBOL SR141 TB 52C
NAME SOLID STATE RELAY TERMINAL BLOCK CONTACTOR
10
MUZ-A09RV- MUZ-A12RV- MODELS WIRING DIAGRAM
E1E1
OUTDOOR UNIT
220-240V ~
SYMBOL CT61 C61,C62 C65 DSA61 F801 F901 IC950 IPM LEV L61
NOISE FILTER P.C BOARD
R65
X64
LDNF2
CT61
LD-E
GRN
DSA61
NR61
12V 3
TB1
RED
WHT
2
BLU
N
FROM INDOOR UNIT CONNECTING
TAB61
L61
TAB62
BLU
GRN/YLW
NAME CURRENT TRANSFORMER SMOOTHING CAPACITOR OUTDOOR FAN CAPACITOR SURGE ABSORBER FUSE (2A) FUSE (2A) DC/DC CONVERTER
INTELLIGENT POWER MODULE
EXPANSION VALVE COIL CMC COIL
BLU
TAB72
SSR61
CN913
21S4
L63
LDNF1
WHT
RELAY
TAB71
P.C BOARD
F901
C65
12
ORG
SYMBOL L63 L64 MC MF61 NR61 PFC RT61 RT62 RT64 R61,62
TAB68
TAB69
CN912
X61
X62
CN
WHT BLU
CN914
3 2
911
1
654321
4
4
CN771
LD62 LD61
R61
CN779CN778
3 2 1
CN726
R62
C61
C62
IC950
TRANS
ELECTRONIC CONTROL
BLK
RED
WHT
YLW
5
MF61
COIL REACTOR COMPRESSOR OUTDOOR FAN MOTOR (INNER FUSE) VARISTOR POWER FACTOR CONTROL MODULE DISCHARGE TEMPERATURE THERMIST OR DEFROST THERMISTOR FIN TEMPERATURE THERMIST OR CURRENT-DETECTING RESISTOR
P.C BOARD
CN601
231
NAME
PFC
+ +
F801
R64
6 5 4 3 2
CN641
1
-
1 2
CN642
SYMBOL R64 R65 SSR61 TB1, TB2 X61, X62 X64
21S4
6
GRY
TB2
BLK
LEV
GRY
1 2
BLK
WHT
RED
3
RED
P N
IPM
~
~
+
U
V W
RT64
RT61
RT62
CN724
TAB75
TAB76
LD65
LD66
LD67
V
MC
NAME CURRENT-DETECTING RESISTOR CURRENT-LIMITING RESISTOR SOLID STATE RELAY TERMINAL BLOCK RELAY RELAY R.V. COIL (COOLING TURN ON)
BLK
21
BLK
WHT
W
U
L64
NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.
2.Use copper conductors only. (For field wiring)
3. Symbols below indicate. /: Terminal block, : Connector
11
7
Refrigerant Piping Max. length A
Height difference should be within 5m regardless of which unit, indoor or outdoor position is high.
w Max. Height
difference 8m
Indoor unit
Outdoor unit
Indoor heat exchanger
Outdoor heat exchanger
Distributor
Flared connection
Room temperature thermistor RT11
Indoor coil thermistor RT13(sub)
Defrost thermistor RT62
Discharge thermistor RT61
Flared connection
Stop valve
Stop valve (with service port)
Capillary tube
Capillary tube (2 pcs)
Refrigerant flow in cooling
Compressor
Accumulator
Maffler
Muffler
4-way valve
Refrigerant flow in heating
Refrigerant pipe [9.52 (Option)
Refrigerant pipe [6.35 (Option)
Indoor coil thermistor RT12(main)
Expansion valve
[3.0o[2.0o200
[3.0o[2.0o300
REFRIGERANT SYSTEM DIAGRAM
MSZ-A09RV ­MSZ-A12RV -
Unit : mm
E1 E1
MUZ-A09RV ­MUZ-A12RV -
E1 E1
INDOOR UNIT
MAX. REFRIGERANT PIPING LENGTH
Additional piping
Model
MSZ-A09RV­MSZ-A12RV-
E1
E1
MAX. HEIGHT DIFFERENCE
Max. length :mm
A
12
OUTDOOR UNIT
Piping size O.D : mm
Gas Liquid Indoor unit Outdoor unit
9.52 6.35
Length of connecting pipe : m
Liquid: 0.5
Gas : 0.43
0
ADDITIONAL REFRIGERANT CHARGE (R410A:g)
Model
MSZ-A09RV­MSZ-A12RV-
E1
E1
Outdoor unit precharged
For additional charging, charge the refrigerant from liquid phase of the gas cylinder. If 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.
1100
Refrigerant piping length (one way)
7m
0
12
9m8m
30
60
Calculation : Xg=30g /m✕ (A-7)m
11m10m
12090
12m
150
PERFORMANCE CURVES8
MSZ-A09RV - MUZ-A12RV ­MSZ-A12RV - MUZ-A12RV -
The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions.
Since operating conditions vary according to the areas where these units are installed. The following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.
(1) GUARANTEED VOLTAGE
198 ~ 264V, 50Hz
(2) AIR FLOW
Air flow should be set at MAX.
(3) MAIN READINGS
(1) Indoor intake air wet-bulb temperature ::WB (2) Indoor discharge air wet-bulb temperature ::WB (3) Outdoor intake air dry-bulb temperature ::DB (4) Total input :W (5) Indoor intake air dry-bulb temperature ::DB (6) Outdoor intake air wet-bulb temperature ::WB (7) Total input :W
Indoor air wet-bulb temperature difference on the left side of the chart on page 14 and 15 shows the difference between the indoor intake air wet-bulb temperature and the indoor discharge air wet-bulb temperature for your reference at service.
How to measure the indoor air wet-bulb temperature difference
1. Attach at least 2 sets of wet-and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets of wet-and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air speed is high.
2. Attach at least 2 sets of dry-bulb thermometers to the outdoor air intake. Cover the thermometers to prevent direct rays of the sun.
3. Check that the air filter is cleaned.
4. Open windows and doors of room.
5. Press the EMERGENCY OPERATION switch once (twice) to start the EMERGENCY COOL (HEAT) MODE.
6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.
7. 10 minutes later, measure temperature again and check that the temperature does not change.
E1E1 E1E1
Cooling
}
Heating
}
INDOOR UNIT
OUTDOOR UNIT
13
7.4
6.9
6.3
5.8
5.3
4.8
MSZ-A09RV- E1
8.5
7.9
7.3
6.7
6.1
5.5
MSZ-A12RV- E1
0 50 100 150(Hz)
0.0
0.5
1.0
1.5
Correction of Cooling capacity
Capacity correction factors
The operational frequency of compressor
0 50 100 150(Hz)
0.0
0.5
1.0
1.5
Correction of Cooling capacity
Capacity correction factors
The operational frequency of compressor
Cooling capacity
MUZ-A09RV -
MUZ-A12RV -
E1
MUZ-A09RV -
E1
Correction of total input
2.0
1.5
1.0
0.5
Capacity correction factors
0 50 100 150(Hz)
The operational frequency of compressor
E1
MUZ-A12RV -
E1
Correction of total input
2.0
1.5
1.0
0.5
Capacity correction factors
0 50 100 150(Hz)
The operational frequency of compressor
14
27.1
25.1
23.0
20.9
18.8
16.7
14.6
12.5
30.4
28.1
25.8
23.4
21.1
18.7
16.4
14.1
MSZ-A12RV- E1
MSZ-A09RV- E1
0 50 100 150(Hz)
0.0
0.5
1.0
1.5
Correction of Heating capacity
Capacity correction factors
The operational frequency of compressor
0 50 100 150(Hz)
0.0
0.5
1.0
1.5
Correction of Heating capacity
Capacity correction factors
The operational frequency of compressor
Heating capacity
Correction of total input
Capacity correction factors
The operational frequency of compressor
0 50 100 150(Hz)
0.5
1.0
1.5
Correction of total input
Capacity correction factors
The operational frequency of compressor
0 50 100 150(Hz)
0.5
1.0
1.5
NOTE:The above curves are for the heating operation without any frost.
MUZ-A09RV -
MUZ-A12RV -
E1
E1
MUZ-A09RV -
MUZ-A12RV -
E1
E1
15
OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
18 32
62Hz
15 20
50
25 60
30 70(%)
35(:
0.6
0.7
0.8
0.9
1.0
1.1
62Hz
6
7
8
9
10
11
12
1.2
(MPa [Gauge])
(kgf/F [Gauge])
(Reference)
220V
240V
15 20
50
25 60
30
70(%)
35(:)
3
4
5
6
7
83Hz
32
18
:
15 20
50
25 6030 70(%)
35(:)
1
2
3
4
5
32
18
220V
240V
53Hz
How to operate with fixed operational frequency of the compressor.
1. Press the EMERGENCY OPERATION switch on the front of the indoor unit , and select either the COOL mode or the HEAT mode before starting to operate the air conditioner.
2. The compressor starts up. The operational frequency of the compressor is 83Hz in the COOL mode and 58Hz in the HEAT mode.
3. The fan speed of the indoor unit is High.
4. This operation continues for 30minutes.
5. In order to release this operation, press the EMERGENCY OPERATION switch again, press any button on the remote
controller.
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])
COOL operation
1 Both indoor and outdoor unit are under the same temperature/humidity condition.
Dry-bulb temperature
20
25 30
2 Air flow should be set at High. 3 Operational frequency : 83Hz
Relative humidity(%)
50 60 70
(Reference) (kgf/F [Gauge])
Outdoor low pressure
MUZ-A09RV -
(MPa [Gauge])
1.3
13
1.2
12
1.1
11
1.0
10
0.9
9
0.8
8
0.7
7
Ambient temperature(:) Ambient humidity(%)
MUZ-A12RV -
Outdoor low pressure
Ambient temperature(:) Ambient humidity(%)
18 32
15 20
25
50
60
E1
62Hz
62Hz
MUZ-A09RV -
E1
Outdoor unit current (A)
30
35(
70(%)
Ambient temperature(:) Ambient humidity(%)
E1
MUZ-A12RV -
E1
Outdoor unit current (A)
Ambient temperature(:) Ambient humidity(%)
16
6.0
5.5
5.0
4.5
4.0
3.5
3.0 2 5 10 15 20 25
240V
220V
58Hz
HEAT operation
58Hz
220V
240V
6.0
5.5
5.0
4.5
4.0
3.5
3.0 2 5 10 15 20 25
Condition Indoor : Dry bulb temperature 20.0:
Wet bulb temperature 14.5:
Outdoor : Dry bulb temperature 2 7 15 20.0:
Wet bulb temperature 1 6 12 14.5:
MUZ-A09RV -
Outdoor unit current (A)
Ambient temperature(:)
E1
MUZ-A12RV -
E1
Outdoor unit current (A)
Ambient temperature(:)
17
PERFORMANCE DATA COOL operation
MSZ-A09RV - MUZ-A09RV -
CAPACITY : 2.6 kW INPUT : 800 W SHF : 0.74
INDOOR INDOOR
DB(:) WB(:) Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
21 21 22 22 22 23 23 23 24 24 24 24 25 25 25 25 26 26 26 26 26 27 27 27 27 27 28 28 28 28 28 29 29 29 29 29 30 30 30 30 30 31 31 31 31 31 32 32 32 32 32
18
3.06 1.71 0.56 640 2.93 1.64 0.56 672 2.81 1.57 0.56 704 2.70 1.51 0.56 736
20
3.19 1.40 0.44 672 3.06 1.34 0.44 712 2.96 1.30 0.44 728 2.86 1.26 0.44 760
18
3.06 1.83 0.60 640 2.93 1.76 0.60 672 2.81 1.68 0.60 704 2.70 1.62 0.60 736
20
3.19 1.53 0.48 672 3.06 1.47 0.48 712 2.96 1.42 0.48 728 2.86 1.37 0.48 760
22
3.32 1.19 0.36 696 3.20 1.15 0.36 740 3.12 1.12 0.36 760 2.99 1.08 0.36 792
18
3.06 1.96 0.64 640 2.93 1.87 0.64 672 2.81 1.80 0.64 704 2.70 1.73 0.64 736
20
3.19 1.66 0.52 672 3.06 1.59 0.52 712 2.96 1.54 0.52 728 2.86 1.49 0.52 760
22
3.32 1.33 0.40 696 3.20 1.28 0.40 740 3.12 1.25 0.40 760 2.99 1.20 0.40 792
18
3.06 2.08 0.68 640 2.93 1.99 0.68 672 2.81 1.91 0.68 704 2.70 1.84 0.68 736
20
3.19 1.78 0.56 672 3.06 1.71 0.56 712 2.96 1.66 0.56 728 2.86 1.60 0.56 760
22
3.32 1.46 0.44 696 3.20 1.41 0.44 740 3.12 1.37 0.44 760 2.99 1.32 0.44 792
24
3.48 1.11 0.32 728 3.35 1.07 0.32 768 3.28 1.05 0.32 792 3.17 1.02 0.32 832
18
3.06 2.20 0.72 640 2.93 2.11 0.72 672 2.81 2.02 0.72 704 2.70 1.95 0.72 736
20
3.19 1.91 0.60 672 3.06 1.83 0.60 712 2.96 1.78 0.60 728 2.86 1.72 0.60 760
22
3.32 1.59 0.48 696 3.20 1.54 0.48 740 3.12 1.50 0.48 760 2.99 1.44 0.48 792
24
3.48 1.25 0.36 728 3.35 1.21 0.36 768 3.28 1.18 0.36 792 3.17 1.14 0.36 832
18
3.06 2.32 0.76 640 2.93 2.22 0.76 672 2.81 2.13 0.76 704 2.70 2.06 0.76 736
20
3.19 2.04 0.64 672 3.06 1.96 0.64 712 2.96 1.90 0.64 728 2.86 1.83 0.64 760
22
3.32 1.72 0.52 696 3.20 1.66 0.52 740 3.12 1.62 0.52 760 2.99 1.55 0.52 792
24
3.48 1.39 0.40 728 3.35 1.34 0.40 768 3.28 1.31 0.40 792 3.17 1.27 0.40 832
26
3.59 1.00 0.28 768 3.48 0.98 0.28 808 3.43 0.96 0.28 832 3.33 0.93 0.28 856
18
3.06 2.44 0.80 640 2.93 2.34 0.80 672 2.81 2.25 0.80 704 2.70 2.16 0.80 736
20
3.19 2.17 0.68 672 3.06 2.08 0.68 712 2.96 2.02 0.68 728 2.86 1.94 0.68 760
22
3.32 1.86 0.56 696 3.20 1.79 0.56 740 3.12 1.75 0.56 760 2.99 1.67 0.56 792
24
3.48 1.53 0.44 728 3.35 1.48 0.44 768 3.28 1.44 0.44 792 3.17 1.40 0.44 832
26
3.59 1.15 0.32 768 3.48 1.11 0.32 808 3.43 1.10 0.32 832 3.33 1.06 0.32 856
18
3.06 2.57 0.84 640 2.93 2.46 0.84 672 2.81 2.36 0.84 704 2.70 2.27 0.84 736
20
3.19 2.29 0.72 672 3.06 2.20 0.72 712 2.96 2.13 0.72 728 2.86 2.06 0.72 760
22
3.32 1.99 0.60 696 3.20 1.92 0.60 740 3.12 1.87 0.60 760 2.99 1.79 0.60 792
24
3.48 1.67 0.48 728 3.35 1.61 0.48 768 3.28 1.57 0.48 792 3.17 1.52 0.48 832
26
3.59 1.29 0.36 768 3.48 1.25 0.36 808 3.43 1.24 0.36 832 3.33 1.20 0.36 856
18
3.06 2.69 0.88 640 2.93 2.57 0.88 672 2.81 2.47 0.88 704 2.70 2.38 0.88 736
20
3.19 2.42 0.76 672 3.06 2.32 0.76 712 2.96 2.25 0.76 728 2.86 2.17 0.76 760
22
3.32 2.12 0.64 696 3.20 2.05 0.64 740 3.12 2.00 0.64 760 2.99 1.91 0.64 792
24
3.48 1.81 0.52 728 3.35 1.74 0.52 768 3.28 1.70 0.52 792 3.17 1.65 0.52 832
26
3.59 1.44 0.40 768 3.48 1.39 0.40 808 3.43 1.37 0.40 832 3.33 1.33 0.40 856
18
3.06 2.81 0.92 640 2.93 2.69 0.92 672 2.81 2.58 0.92 704 2.70 2.49 0.92 736
20
3.19 2.55 0.80 672 3.06 2.44 0.80 712 2.96 2.37 0.80 728 2.86 2.29 0.80 760
22
3.32 2.25 0.68 696 3.20 2.17 0.68 740 3.12 2.12 0.68 760 2.99 2.03 0.68 792
24
3.48 1.95 0.56 728 3.35 1.88 0.56 768 3.28 1.83 0.56 792 3.17 1.78 0.56 832
26
3.59 1.58 0.44 768 3.48 1.53 0.44 808 3.43 1.51 0.44 832 3.33 1.46 0.44 856
18
3.06 2.93 0.96 640 2.93 2.81 0.96 672 2.81 2.70 0.96 704 2.70 2.60 0.96 736
20
3.19 2.68 0.84 672 3.06 2.57 0.84 712 2.96 2.49 0.84 728 2.86 2.40 0.84 760
22
3.32 2.39 0.72 696 3.20 2.30 0.72 740 3.12 2.25 0.72 760 2.99 2.15 0.72 792
24
3.48 2.09 0.60 728 3.35 2.01 0.60 768 3.28 1.97 0.60 792 3.17 1.90 0.60 832
26
3.59 1.72 0.48 768 3.48 1.67 0.48 808 3.43 1.65 0.48 832 3.33 1.60 0.48 856
18
3.06 3.06 1.00 640 2.93 2.93 1.00 672 2.81 2.81 1.00 704 2.70 2.70 1.00 736
20
3.19 2.80 0.88 672 3.06 2.69 0.88 712 2.96 2.61 0.88 728 2.86 2.52 0.88 760
22
3.32 2.52 0.76 696 3.20 2.43 0.76 740 3.12 2.37 0.76 760 2.99 2.27 0.76 792
24
3.48 2.23 0.64 728 3.35 2.15 0.64 768 3.28 2.10 0.64 792 3.17 2.03 0.64 832
26
3.59 1.87 0.52 768 3.48 1.81 0.52 808 3.43 1.78 0.52 832 3.33 1.73 0.52 856
NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
21 25 27 30
E1E1
OUTDOOR DB(:)
18
OUTDOOR DB(:)
INDOOR INDOOR
35 40 43
DB(:) WB(:) Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
21 18 2.55 1.43 0.56 784 2.34 1.31 0.56 832 2.25 1.26 0.56 848 21 20 2.68 1.18 0.44 816 2.50 1.10 0.44 856 2.41 1.06 0.44 880 22 18 2.55 1.53 0.60 784 2.34 1.40 0.60 832 2.25 1.35 0.60 848 22 20 2.68 1.29 0.48 816 2.50 1.20 0.48 856 2.41 1.15 0.48 880 22 22 2.83 1.02 0.36 848 2.65 0.95 0.36 896 2.56 0.92 0.36 912 23 18 2.55 1.63 0.64 784 2.34 1.50 0.64 832 2.25 1.44 0.64 848 23 20 2.68 1.39 0.52 816 2.50 1.30 0.52 856 2.41 1.25 0.52 880 23 22 2.83 1.13 0.40 848 2.65 1.06 0.40 896 2.56 1.02 0.40 912 24 18 2.55 1.73 0.68 784 2.34 1.59 0.68 832 2.25 1.53 0.68 848 24 20 2.68 1.50 0.56 816 2.50 1.40 0.56 856 2.41 1.35 0.56 880 24 22 2.83 1.25 0.44 848 2.65 1.17 0.44 896 2.56 1.13 0.44 912 24 24 2.99 0.96 0.32 880 2.81 0.90 0.32 920 2.73 0.87 0.32 940 25 18 2.55 1.83 0.72 784 2.34 1.68 0.72 832 2.25 1.62 0.72 848 25 20 2.68 1.61 0.60 816 2.50 1.50 0.60 856 2.41 1.44 0.60 880 25 22 2.83 1.36 0.48 848 2.65 1.27 0.48 896 2.56 1.23 0.48 912 25 24 2.99 1.08 0.36 880 2.81 1.01 0.36 920 2.73 0.98 0.36 940 26 18 2.55 1.94 0.76 784 2.34 1.78 0.76 832 2.25 1.71 0.76 848 26 20 2.68 1.71 0.64 816 2.50 1.60 0.64 856 2.41 1.54 0.64 880 26 22 2.83 1.47 0.52 848 2.65 1.38 0.52 896 2.56 1.33 0.52 912 26 24 2.99 1.20 0.40 880 2.81 1.12 0.40 920 2.73 1.09 0.40 940 26 26 3.15 0.88 0.28 912 2.96 0.83 0.28 952 2.87 0.80 0.28 972 27 18 2.55 2.04 0.80 784 2.34 1.87 0.80 832 2.25 1.80 0.80 848 27 20 2.68 1.82 0.68 816 2.50 1.70 0.68 856 2.41 1.64 0.68 880 27 22 2.83 1.59 0.56 848 2.65 1.49 0.56 896 2.56 1.43 0.56 912 27 24 2.99 1.32 0.44 880 2.81 1.24 0.44 920 2.73 1.20 0.44 940 27 26 3.15 1.01 0.32 912 2.96 0.95 0.32 952 2.87 0.92 0.32 972 28 18 2.55 2.14 0.84 784 2.34 1.97 0.84 832 2.25 1.89 0.84 848 28 20 2.68 1.93 0.72 816 2.50 1.80 0.72 856 2.41 1.73 0.72 880 28 22 2.83 1.70 0.60 848 2.65 1.59 0.60 896 2.56 1.54 0.60 912 28 24 2.99 1.44 0.48 880 2.81 1.35 0.48 920 2.73 1.31 0.48 940 28 26 3.15 1.13 0.36 912 2.96 1.07 0.36 952 2.87 1.03 0.36 972 29 18 2.55 2.24 0.88 784 2.34 2.06 0.88 832 2.25 1.98 0.88 848 29 20 2.68 2.04 0.76 816 2.50 1.90 0.76 856 2.41 1.83 0.76 880 29 22 2.83 1.81 0.64 848 2.65 1.70 0.64 896 2.56 1.64 0.64 912 29 24 2.99 1.55 0.52 880 2.81 1.46 0.52 920 2.73 1.42 0.52 940 29 26 3.15 1.26 0.40 912 2.96 1.19 0.40 952 2.87 1.15 0.40 972 30 18 2.55 2.34 0.92 784 2.34 2.15 0.92 832 2.25 2.07 0.92 848 30 20 2.68 2.14 0.80 816 2.50 2.00 0.80 856 2.41 1.92 0.80 880 30 22 2.83 1.93 0.68 848 2.65 1.80 0.68 896 2.56 1.74 0.68 912 30 24 2.99 1.67 0.56 880 2.81 1.57 0.56 920 2.73 1.53 0.56 940 30 26 3.15 1.38 0.44 912 2.96 1.30 0.44 952 2.87 1.26 0.44 972 31 18 2.55 2.45 0.96 784 2.34 2.25 0.96 832 2.25 2.16 0.96 848 31 20 2.68 2.25 0.84 816 2.50 2.10 0.84 856 2.41 2.02 0.84 880 31 22 2.83 2.04 0.72 848 2.65 1.91 0.72 896 2.56 1.84 0.72 912 31 24 2.99 1.79 0.60 880 2.81 1.68 0.60 920 2.73 1.64 0.60 940 31 26 3.15 1.51 0.48 912 2.96 1.42 0.48 952 2.87 1.38 0.48 972 32 18 2.55 2.55 1.00 784 2.34 2.34 1.00 832 2.25 2.25 1.00 848 32 20 2.68 2.36 0.88 816 2.50 2.20 0.88 856 2.41 2.12 0.88 880 32 22 2.83 2.15 0.76 848 2.65 2.02 0.76 896 2.56 1.95 0.76 912 32 24 2.99 1.91 0.64 880 2.81 1.80 0.64 920 2.73 1.75 0.64 940 32 26 3.15 1.64 0.52 912 2.96 1.54 0.52 952 2.87 1.49 0.52 972
CAPACITY : 2.6 kW INPUT : 800 W SHF : 0.74
PERFORMANCE DATA COOL operation
MSZ-A09RV - MUZ-A09RV -
NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
E1E1
19
PERFORMANCE DATA COOL operation
MSZ-A12RV - MUZ-A12RV -
CAPACITY : 3.4 kW INPUT : 1220 W SHF : 0.69
INDOOR INDOOR
DB(:) WB(:) Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
21 18 4.00 2.04 0.51 976 3.83 1.95 0.51 1025 3.67 1.87 0.51 1074 3.54 1.80 0.51 1122 21 20 4.17 1.62 0.39 1025 4.00 1.56 0.39 1086 3.88 1.51 0.39 1110 3.74 1.46 0.39 1159 22 18 4.00 2.20 0.55 976 3.83 2.10 0.55 1025 3.67 2.02 0.55 1074 3.54 1.94 0.55 1122 22 20 4.17 1.79 0.43 1025 4.00 1.72 0.43 1086 3.88 1.67 0.43 1110 3.74 1.61 0.43 1159 22 22 4.34 1.34 0.31 1061 4.18 1.30 0.31 1129 4.08 1.26 0.31 1159 3.91 1.21 0.31 1208 23 18 4.00 2.36 0.59 976 3.83 2.26 0.59 1025 3.67 2.17 0.59 1074 3.54 2.09 0.59 1122 23 20 4.17 1.96 0.47 1025 4.00 1.88 0.47 1086 3.88 1.82 0.47 1110 3.74 1.76 0.47 1159 23 22 4.34 1.52 0.35 1061 4.18 1.46 0.35 1129 4.08 1.43 0.35 1159 3.91 1.37 0.35 1208 24 18 4.00 2.52 0.63 976 3.83 2.41 0.63 1025 3.67 2.31 0.63 1074 3.54 2.23 0.63 1122 24 20 4.17 2.12 0.51 1025 4.00 2.04 0.51 1086 3.88 1.98 0.51 1110 3.74 1.91 0.51 1159 24 22 4.34 1.69 0.39 1061 4.18 1.63 0.39 1129 4.08 1.59 0.39 1159 3.91 1.52 0.39 1208 24 24 4.56 1.23 0.27 1110 4.39 1.18 0.27 1171 4.28 1.16 0.27 1208 4.15 1.12 0.27 1269 25 18 4.00 2.68 0.67 976 3.83 2.56 0.67 1025 3.67 2.46 0.67 1074 3.54 2.37 0.67 1122 25 20 4.17 2.29 0.55 1025 4.00 2.20 0.55 1086 3.88 2.13 0.55 1110 3.74 2.06 0.55 1159 25 22 4.34 1.86 0.43 1061 4.18 1.80 0.43 1129 4.08 1.75 0.43 1159 3.91 1.68 0.43 1208 25 24 4.56 1.41 0.31 1110 4.39 1.36 0.31 1171 4.28 1.33 0.31 1208 4.15 1.29 0.31 1269 26 18 4.00 2.84 0.71 976 3.83 2.72 0.71 1025 3.67 2.61 0.71 1074 3.54 2.51 0.71 1122 26 20 4.17 2.46 0.59 1025 4.00 2.36 0.59 1086 3.88 2.29 0.59 1110 3.74 2.21 0.59 1159 26 22 4.34 2.04 0.47 1061 4.18 1.97 0.47 1129 4.08 1.92 0.47 1159 3.91 1.84 0.47 1208 26 24 4.56 1.59 0.35 1110 4.39 1.54 0.35 1171 4.28 1.50 0.35 1208 4.15 1.45 0.35 1269 26 26 4.69 1.08 0.23 1171 4.56 1.05 0.23 1232 4.49 1.03 0.23 1269 4.35 1.00 0.23 1305 27 18 4.00 3.00 0.75 976 3.83 2.87 0.75 1025 3.67 2.75 0.75 1074 3.54 2.65 0.75 1122 27 20 4.17 2.62 0.63 1025 4.00 2.52 0.63 1086 3.88 2.44 0.63 1110 3.74 2.36 0.63 1159 27 22 4.34 2.21 0.51 1061 4.18 2.13 0.51 1129 4.08 2.08 0.51 1159 3.91 1.99 0.51 1208 27 24 4.56 1.78 0.39 1110 4.39 1.71 0.39 1171 4.28 1.67 0.39 1208 4.15 1.62 0.39 1269 27 26 4.69 1.27 0.27 1171 4.56 1.23 0.27 1232 4.49 1.21 0.27 1269 4.35 1.18 0.27 1305 28 18 4.00 3.16 0.79 976 3.83 3.02 0.79 1025 3.67 2.90 0.79 1074 3.54 2.79 0.79 1122 28 20 4.17 2.79 0.67 1025 4.00 2.68 0.67 1086 3.88 2.60 0.67 1110 3.74 2.51 0.67 1159 28 22 4.34 2.38 0.55 1061 4.18 2.30 0.55 1129 4.08 2.24 0.55 1159 3.91 2.15 0.55 1208 28 24 4.56 1.96 0.43 1110 4.39 1.89 0.43 1171 4.28 1.84 0.43 1208 4.15 1.78 0.43 1269 28 26 4.69 1.45 0.31 1171 4.56 1.41 0.31 1232 4.49 1.39 0.31 1269 4.35 1.35 0.31 1305 29 18 4.00 3.32 0.83 976 3.83 3.17 0.83 1025 3.67 3.05 0.83 1074 3.54 2.93 0.83 1122 29 20 4.17 2.96 0.71 1025 4.00 2.84 0.71 1086 3.88 2.75 0.71 1110 3.74 2.66 0.71 1159 29 22 4.34 2.56 0.59 1061 4.18 2.47 0.59 1129 4.08 2.41 0.59 1159 3.91 2.31 0.59 1208 29 24 4.56 2.14 0.47 1110 4.39 2.06 0.47 1171 4.28 2.01 0.47 1208 4.15 1.95 0.47 1269 29 26 4.69 1.64 0.35 1171 4.56 1.59 0.35 1232 4.49 1.57 0.35 1269 4.35 1.52 0.35 1305 30 18 4.00 3.48 0.87 976 3.83 3.33 0.87 1025 3.67 3.19 0.87 1074 3.54 3.08 0.87 1122 30 20 4.17 3.12 0.75 1025 4.00 3.00 0.75 1086 3.88 2.91 0.75 1110 3.74 2.81 0.75 1159 30 22 4.34 2.73 0.63 1061 4.18 2.63 0.63 1129 4.08 2.57 0.63 1159 3.91 2.46 0.63 1208 30 24 4.56 2.32 0.51 1110 4.39 2.24 0.51 1171 4.28 2.18 0.51 1208 4.15 2.12 0.51 1269 30 26 4.69 1.83 0.39 1171 4.56 1.78 0.39 1232 4.49 1.75 0.39 1269 4.35 1.70 0.39 1305 31 18 4.00 3.64 0.91 976 3.83 3.48 0.91 1025 3.67 3.34 0.91 1074 3.54 3.22 0.91 1122 31 20 4.17 3.29 0.79 1025 4.00 3.16 0.79 1086 3.88 3.06 0.79 1110 3.74 2.95 0.79 1159 31 22 4.34 2.90 0.67 1061 4.18 2.80 0.67 1129 4.08 2.73 0.67 1159 3.91 2.62 0.67 1208 31 24 4.56 2.51 0.55 1110 4.39 2.41 0.55 1171 4.28 2.36 0.55 1208 4.15 2.28 0.55 1269 31 26 4.69 2.02 0.43 1171 4.56 1.96 0.43 1232 4.49 1.93 0.43 1269 4.35 1.87 0.43 1305 32 18 4.00 3.80 0.95 976 3.83 3.63 0.95 1025 3.67 3.49 0.95 1074 3.54 3.36 0.95 1122 32 20 4.17 3.46 0.83 1025 4.00 3.32 0.83 1086 3.88 3.22 0.83 1110 3.74 3.10 0.83 1159 32 22 4.34 3.08 0.71 1061 4.18 2.97 0.71 1129 4.08 2.90 0.71 1159 3.91 2.78 0.71 1208 32 24 4.56 2.69 0.59 1110 4.39 2.59 0.59 1171 4.28 2.53 0.59 1208 4.15 2.45 0.59 1269 32 26 4.69 2.21 0.47 1171 4.56 2.14 0.47 1232 4.49 2.11 0.47 1269 4.35 2.05 0.47 1305
NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
21 25 27 30
E1E1
OUTDOOR DB(:)
20
OUTDOOR DB(:)
INDOOR INDOOR
35 40 43
DB(:) WB(:) Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
21 18 3.33 1.70 0.51 1196 3.06 1.56 0.51 1269 2.94 1.50 0.51 1293 21 20 3.50 1.37 0.39 1244 3.26 1.27 0.39 1305 3.15 1.23 0.39 1342 22 18 3.33 1.83 0.55 1196 3.06 1.68 0.55 1269 2.94 1.62 0.55 1293 22 20 3.50 1.51 0.43 1244 3.26 1.40 0.43 1305 3.15 1.35 0.43 1342 22 22 3.71 1.15 0.31 1293 3.47 1.08 0.31 1366 3.35 1.04 0.31 1391 23 18 3.33 1.97 0.59 1196 3.06 1.81 0.59 1269 2.94 1.74 0.59 1293 23 20 3.50 1.65 0.47 1244 3.26 1.53 0.47 1305 3.15 1.48 0.47 1342 23 22 3.71 1.30 0.35 1293 3.47 1.21 0.35 1366 3.35 1.17 0.35 1391 24 18 3.33 2.10 0.63 1196 3.06 1.93 0.63 1269 2.94 1.85 0.63 1293 24 20 3.50 1.79 0.51 1244 3.26 1.66 0.51 1305 3.15 1.60 0.51 1342 24 22 3.71 1.45 0.39 1293 3.47 1.35 0.39 1366 3.35 1.31 0.39 1391 24 24 3.91 1.06 0.27 1342 3.67 0.99 0.27 1403 3.57 0.96 0.27 1434 25 18 3.33 2.23 0.67 1196 3.06 2.05 0.67 1269 2.94 1.97 0.67 1293 25 20 3.50 1.93 0.55 1244 3.26 1.80 0.55 1305 3.15 1.73 0.55 1342 25 22 3.71 1.59 0.43 1293 3.47 1.49 0.43 1366 3.35 1.44 0.43 1391 25 24 3.91 1.21 0.31 1342 3.67 1.14 0.31 1403 3.57 1.11 0.31 1434 26 18 3.33 2.37 0.71 1196 3.06 2.17 0.71 1269 2.94 2.09 0.71 1293 26 20 3.50 2.07 0.59 1244 3.26 1.93 0.59 1305 3.15 1.86 0.59 1342 26 22 3.71 1.74 0.47 1293 3.47 1.63 0.47 1366 3.35 1.57 0.47 1391 26 24 3.91 1.37 0.35 1342 3.67 1.29 0.35 1403 3.57 1.25 0.35 1434 26 26 4.11 0.95 0.23 1391 3.88 0.89 0.23 1452 3.76 0.86 0.23 1482 27 18 3.33 2.50 0.75 1196 3.06 2.30 0.75 1269 2.94 2.21 0.75 1293 27 20 3.50 2.21 0.63 1244 3.26 2.06 0.63 1305 3.15 1.98 0.63 1342 27 22 3.71 1.89 0.51 1293 3.47 1.77 0.51 1366 3.35 1.71 0.51 1391 27 24 3.91 1.52 0.39 1342 3.67 1.43 0.39 1403 3.57 1.39 0.39 1434 27 26 4.11 1.11 0.27 1391 3.88 1.05 0.27 1452 3.76 1.01 0.27 1482 28 18 3.33 2.63 0.79 1196 3.06 2.42 0.79 1269 2.94 2.32 0.79 1293 28 20 3.50 2.35 0.67 1244 3.26 2.19 0.67 1305 3.15 2.11 0.67 1342 28 22 3.71 2.04 0.55 1293 3.47 1.91 0.55 1366 3.35 1.84 0.55 1391 28 24 3.91 1.68 0.43 1342 3.67 1.58 0.43 1403 3.57 1.54 0.43 1434 28 26 4.11 1.28 0.31 1391 3.88 1.20 0.31 1452 3.76 1.16 0.31 1482 29 18 3.33 2.77 0.83 1196 3.06 2.54 0.83 1269 2.94 2.44 0.83 1293 29 20 3.50 2.49 0.71 1244 3.26 2.32 0.71 1305 3.15 2.23 0.71 1342 29 22 3.71 2.19 0.59 1293 3.47 2.05 0.59 1366 3.35 1.98 0.59 1391 29 24 3.91 1.84 0.47 1342 3.67 1.73 0.47 1403 3.57 1.68 0.47 1434 29 26 4.11 1.44 0.35 1391 3.88 1.36 0.35 1452 3.76 1.31 0.35 1482 30 18 3.33 2.90 0.87 1196 3.06 2.66 0.87 1269 2.94 2.56 0.87 1293 30 20 3.50 2.63 0.75 1244 3.26 2.45 0.75 1305 3.15 2.36 0.75 1342 30 22 3.71 2.33 0.63 1293 3.47 2.18 0.63 1366 3.35 2.11 0.63 1391 30 24 3.91 1.99 0.51 1342 3.67 1.87 0.51 1403 3.57 1.82 0.51 1434 30 26 4.11 1.60 0.39 1391 3.88 1.51 0.39 1452 3.76 1.47 0.39 1482 31 18 3.33 3.03 0.91 1196 3.06 2.78 0.91 1269 2.94 2.68 0.91 1293 31 20 3.50 2.77 0.79 1244 3.26 2.58 0.79 1305 3.15 2.48 0.79 1342 31 22 3.71 2.48 0.67 1293 3.47 2.32 0.67 1366 3.35 2.24 0.67 1391 31 24 3.91 2.15 0.55 1342 3.67 2.02 0.55 1403 3.57 1.96 0.55 1434 31 26 4.11 1.77 0.43 1391 3.88 1.67 0.43 1452 3.76 1.62 0.43 1482 32 18 3.33 3.17 0.95 1196 3.06 2.91 0.95 1269 2.94 2.79 0.95 1293 32 20 3.50 2.91 0.83 1244 3.26 2.71 0.83 1305 3.15 2.61 0.83 1342 32 22 3.71 2.63 0.71 1293 3.47 2.46 0.71 1366 3.35 2.38 0.71 1391 32 24 3.91 2.31 0.59 1342 3.67 2.17 0.59 1403 3.57 2.11 0.59 1434 32 26 4.11 1.93 0.47 1391 3.88 1.82 0.47 1452 3.76 1.77 0.47 1482
CAPACITY : 3.4 kW INPUT : 1220 W SHF : 0.69
PERFORMANCE DATA COOL operation
MSZ-A12RV - MUZ-A12RV -
NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
E1E1
21
OUTDOOR WB(:)
INDOOR
-10 -5 0 5 10 15 20
DB(:) Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT
15 3.02 1027 3.65 1232 4.27 1390 4.90 1501 5.52 1596 6.10 1643 6.72 1675 21 2.88 1106 3.46 1311 4.08 1454 4.66 1564 5.28 1643 5.86 1691 6.46 1754 26 2.59 1185 3.22 1390 3.79 1533 4.42 1643 5.04 1722 5.62 1770 6.24 1817
CAPACITY : 4.8 kW INPUT : 1580 W
PERFORMANCE DATA
OUTDOOR WB(:)
INDOOR
-10 -5 0 5 10 15 20
DB(:) Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT
15 2.27 644 2.74 772 3.20 871 3.67 941 4.14 1000 4.57 1030 5.04 1049 21 2.16 693 2.59 822 3.06 911 3.49 980 3.96 1030 4.39 1059 4.84 1099 26 1.94 743 2.41 871 2.84 960 3.31 1030 3.78 1079 4.21 1109 4.68 1139
CAPACITY : 3.6 kW INPUT : 990 W
HEAT operation
MSZ-A09RV - MUZ-A09RV -
PERFORMANCE DATA HEAT operation
MSZ-A12RV - MUZ-A12RV -
E1E1
E1E1
NOTE Q :Total capacity (kW) INPUT:Total power input (W) DB : Dry-bulb temperature WB: Wet-bulb temperature
22
MICROPROCESSOR CONTROL9
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 FEEL
COOL DRYHEAT
6 00 1
1 00
AM
PM
SWING
SWING button
GREEN SIGN
21 22 23 24 25 26 27 28 29 30
Blinking lamp shows the room temperature
Lighting lamp shows the set temperature
GREEN SIGN
21 22 23 24 25 26 27 28 29 30
Blinking lamp shows the room temperature
Lighting lamp shows the set temperature
MSZ-A09RV- MUZ-A09RV­MSZ-A12RV- MUZ-A12RV-
E1E1 E1E1
Once the controls are set, the same operation mode can be repeated by simply turning the OPERATE/STOP(ON/OFF) button
ON. Indoor unit receives the signal with a beep tone. When the system turns off, 3-minute time delay will operate to protect system from overload and compressor will not restart for
3 minutes.
WIRELESS REMOTE CONTROLLER
INDOOR UNIT DISPLAY SECTION
GREEN SIGN
GREEN SIGN shows the current room temperature and set temperature. The room temperature indicated on the temperature monitor lamp may not be exactly the same as the actual room temperature.
Available the set temperature range is 16:~31:, however, indication range of temperature monitor lamp is 21:~30:.
The set temperature (lighting) and room temperature (blinking) are displayed.
1.
When the room temperature or set temperature is out of the indication range
If the set temperature is lower than 21:, indicating lamp at 21: is lighting. And if the room temperature is lower than 21:, indicating lamp at 21: is blinking.
If the set temperature is higher than 30:, indicating lamp at 30: is lighting. And if the room temperature is higher than 30:, indicating lamp at 30: is blinking.
(Example) When the set temperature is 28:, indicating lamp at 28:
2.When the room temperature or set temperature is within the indication range
(Example) When the set temperature is 26:, indicating lamp at 26:
is lighting. When the room temperature is 30: or higher, indicating lamp at 30: is blinking.
is lighting.
When the room temperature is 27.5: or higher and lower
than 28.5:, indicating lamp at 28: is blinking.
w When the set temperature and room temperature are the same, corresponding indicating lamp is lighting. NOTE: When the unit is not operating : Both POWER MONITOR lamp and green sign lamps are off. When ON- Timer is set : POWER MONITOR lamp is on. All green sign lamps are off. When OFF- Timer is set : The lamp indication is as same as ordinary operation.
23
Model
COOL mode of
"I FEEL CONTROL"
DRY mode of
"I FEEL CONTROL"
HEAT mode of
"I FEEL CONTROL"
Initial room temperature Initial set temperature
26:
26: or more
26: or less
23: or less
23: to 25:
24:
Initial room temperatureminus 2:
Initial room temperatureminus 2:
1
9-1. “I FEEL CONTROL” ( ) OPERATION
Mode
COOL mode of
"I FEEL CONTROL"
DRY mode of
"I FEEL CONTROL"
HEAT mode of
"I FEEL CONTROL"
Initial room temperature
more than 25:
23: to 25:
less than 23:
1. Press OPERATE/STOP(ON/OFF) button on the remote controller. POWER MONITOR lamp of the indoor unit will turn on with a beep tone.
2. Press OPERATION SELECT button to set “I FEEL CONTROL”( ) Then a beep tone is heard.
3. The operation mode is determined by the room temperature at start-up of the operation.
Once the mode is fixed, the mode will not change by room temperature afterwards.
Under the ON-TIMER ( ) operation, mode is determined according to the room temperature as the operation
starts.
When the system is stopped with the OPERATE/STOP(ON/OFF) button on the remote controller, and restarted within 2
hours in “I FEEL CONTROL” ( ) mode, the system operates in previous mode automatically regardless of the room temperature.
Example
Previous opera­tion
COOL mode of
Restart
COOL mode of “I FEEL CONTROL”
“I FEEL CONTROL”
When the system is restarted after 2 hours, the operation mode is determined by the initial room temperature at start-up
of the operation.
Example
Previous opera­tion COOL mode of
“I FEEL CONTROL” or COOL mode
Restart
COOL or DRY or HEAT mode of “I FEEL CONTROL” that determined by room temperature start-up of the operation.
4. The initial set temperature is decided by the initial room temperature.
1 When the system is restarted with the remote controller, the system operates with the previous set temperature regard-
less of the room temperature at restart.
The set temperature is calculated by the previous set temperature.
24
5. TEMPERATURE buttons In “I FEEL CONTROL” (h)mode, set temperature is decided by the microprocessor based on the room temperature.
In addition, set temperature is controlled by TOO WARM or TOO COOL buttons when you feel too cool or too warm. Pressing the TOO WARM or TOO COOL button emits a beep tone.
Fuzzy control
When the TOO COOL or TOO WARM button is pressed, the microprocessor changes the set temperature, considering the room temperature, the frequency of pressing TOO COOL or TOO WARM button and the user’s preference to heat or cold. So this is called “Fuzzy control”, and works only in “I FEEL CONTROL” mode. In DRY mode of “I FEEL CONTROL”, the set temperature doesn’t change.
TOO COOL… To raise the set temperature 1 ~ 2 degrees (: )
TOO WARM … To lower the set temperature 1 ~ 2 degrees (:)
9-1-1. Cool mode of “I FEEL CONTROL”
1. Following are the fan speed in AUTO.
Temperature difference
Fan speed
Difference between room temperature and set tempera­ture during operation.
Room temperature minus set temperature: 2 degrees or more·································High Room temperature minus set temperature: Room temperature minus set temperature: less than 1 degree·································Low
2. Time control
1 degree or more and less than 2 degrees ··········Med.
1 deg.
2 deg.
1.5 deg.
When the three conditions below have been satisfied for 1 hour and 45 minutes, compressor stops for 3 minutes. (1).Compressor has been continuously operating. (2).Indoor fan speed is Low or Med. (3).Room temperature is below 26:. When compressor turns off half way,.the accumulated time is cancelled. When compressor turns on again, time counting starts from the beginning. When the indoor fan speed becomes High or the room temperature exceeds 26:, time counting stops temporarily. After, when the above conditions are satisfied again, time counting restarts. The indoor fan operates at set speed.
3. Coil frost prevention mode
The operational frequency of the compressor is controlled based on the temperature of the indoor coil thermistor(RT12).
Temperature of indoor coil thermistor:Th
approx. 8°C or above
approx. 6°C to 8°C approx. 3°C to 6°C
Operation frequency
normal
fixed
lower at the rate of 3Hz/min
lower at the rate of 6Hz/min
approx. 3°C or below
Compressor is turned OFF for 5 minutes when temperature of indoor coil thermistor continues approx. 3°C or below for 5 minutes or more.
4 deg.
• The indoor fan maintains the actual speed of the moment.
9-1-2. DRY mode of “I FEEL CONTROL”
The system for dry operation uses the same refrigerant circuit as the cooling circuit. The compressor and the indoor fan are controlled by the temperature. By such controls, indoor flow amounts will be reduced in order to lower humidity without much room temperature decrease. The operation of the compressor and indoor fan is as follows.
Compressor operates by temperature control and time control.
1 Set temperature is controlled to fall 2°C as initial set temperature. 2 Indoor fan and outdoor fan operate in the same cycle as the compressor. 3 Operational frequency control of compressor is fixed 30Hz.
NOTE Coil frost prevention during DRY mode of “I FEEL CONTROL”
The operation is same as coil frost prevention during COOL mode of “I FEEL CONTROL” .
25
Defrosting in DRY mode
Released
Cold Air Prevention
18:RT12 22:
Fan speed
Set speed Very Low or stop
<Time condition>
<Indoor fan speed>
less than 2 minutes Low 2 minutes to 4 minutes Med. more than 4 minutes High
Compressor
OFF
ON
Fan
Very Low
Set speed
The operational frequency of the compressor is controlled based on the temperature of the indoor coil thermistor (RT12).
Temperature of indoor coil thermistor:RT12
approx. 8°C or above
approx. 6°C to 8°C approx. 3°C to 6°C
Operation frequency
normal
fixed
lower at the rate of 3Hz/min
lower at the rate of 6Hz/min
approx. 3°C or below
Compressor is turned OFF for 5 minutes when temperature of indoor coil thermistor continues approx. 3°C or below for 5 minutes or more.
The indoor fan maintains the actual speed of the moment. However, it changes to Low speed when the compressor stops.
9-1-3. HEAT mode of “I FEEL CONTROL”
1. Indoor fan speed control
(1) Indoor fan operates at the set speed by FAN SPEED CONTROL button.
In Auto the fan speed is as follows.
Set temperature minus room temperature: 2 degrees or more················································· High
Initial temperature difference
Set temperature minus room temperature: Between 1 and 2 degrees····································· Med. Set temperature minus room temperature: less than 1 degree················································· Low
(2) Cold air prevention control
1 When the compressor is not operating,
(1) if the temperature of indoor coil thermistor RT12 is 18°C or less, the fan stops. (2) if the temperature of indoor coil thermistor RT12 is more than 18°C, the fan operates at Very Low.
2 When the compressor is operating,
(1) if the temperature of RT12 is 22°C or more, the fan operates at set speed. (2) if the temperature of RT12 is less than 22°C and
(1) if the temperature of room temperature thermistor RT11 is 15°C or less, the fan stops. (2) if the temperature of room temperature thermistor RT11 is more than 15°C, the fan operates at Very Low.
Fan speed
Difference between room temperature and set tem­perature during operation
2 deg.
1 deg.
1.7 deg.
4 deg.
NOTE : At initial and after defrosting, when the RT12 is from 18: to 22:, Cold Air Prevention control works.
(3) Warm air control.
When the following any condition of 1(a. ~ d.) and the condition of 2 are satisfied at the same time, warm air control works.
1 a.) when the operation mode has been changed to HEAT mode
b.) when cold air prevention has been released c.) when defrosting has been finished d.) when the compressor starts in HEAT mode
2 When the temperature of indoor coil thermistor RT12 is less than 37°C. When warm air control works, the fan speed changes as follows to blow out warm air gradually.
Gradation of fan speed in initial
The upper limit of the fan speed in MANUAL is the set speed. The upper limit of the fan speed in AUTO is the speed decided by indoor fan speed control. When the temperature of RT12 has been 37°C or more, or when the set speed has been changed, this control is released and the fan speed is the set speed.
(4) Flow soft control
When the thermostat (compressor) is off, the indoor fan operates as follows.
NOTE : When the thermostat(compressor) turns on, the fan will operate
at set speed. But until cold air prevention and warm air control is released.
26
2. High pressure protection
Normal
Indoor fan
Compressor normal
Outdoor fan moter
4-way valve
ON ON
OFF
OFF
100Hz
Horizontal
Normal
Vertical vanes
Normal
Normal
Normal
Very Low (temperature of indoor coil thermistor > 18:)
30
seconds
30
seconds
30
seconds1second
5 seconds
1
second
1
second
STOP
5
seconds
MAX Hz
MAX Hz
In HEAT mode and manually-operated HEAT mode, the indoor coil thermistor detects the temperature at the indoor heat
exchanger and controls the compressor rotational frequency to prevent the condensing pressure from increasing excessive-
ly.
3. Overload starting
When the room temperature thermistor reads 18°C or above, the compressor runs with its maximum frequency regulated for
3 minutes after the start-up.
4. Defrosting in HEAT mode
(1) Starting conditions of defrosting
a) The defrost thermistor attached to the outdoor heat exchanger read -3°C or below.
b) The cumulative operation time of the compressor has reached any of the set values: 30, 40, 45, 55, 65, 75, 85, 95, 105,
115 minutes.
c) More than 5 minutes have passed since the start-up of the compressor.
When the above three conditions, a), b), and c), are satisfied, the defrosting starts.
wSet value of compressor operation time(hereinafter referred to as defrost interval)
The first defrost interval is 40 minutes long, and the second 45 minutes long.The third and subsequent intervals are set to be longer, and less frequent, depending on defrosting time. The third and subsequent defrost intervals follow any of the three patterns …5 or 10 minutes longer, the same, or 5 or 10 minutes shorter compared with the previous defrost interval … with the longest 115 minutes and the shortest 30 minutes.
(2) Releasing conditions of defrosting
Defrosting is released when any of the following condition is satisfied: a) The defrost thermistor reads 13°C or above. b) Defrosting time has exceeded 10 minutes. c) Some other mode than HEAT mode is set during defrosting.
Time chart of defrosting in HEAT mode (reverse type)
<outdoor unit>
27
9-2. COOL ( ) OPERATION
35
30
25
20
15
10
:
10 15 20 25 30 35
Set temperature
Initial room temperature
Set temperature and initial room temperature in dry mode
:
Med.
High
High
Low
(1) Press OPERATE/STOP(ON/OFF) button.POWER MONITOR lamp of the indoor unit turns on with a beep tone. (2) Select COOL mode with the OPERATION SELECT button. (3) Press TEMPERATURE buttons (TOO WARM or TOO COOL button)to select the desired temperature.
The setting range is 16 ~ 31°C
Indoor fan continues to operate regardless of thermostat’s OFF-ON.Coil frost prevention is same as COOL mode of “I FEEL CONTROL”.
9-3. DRY ( ) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
POWER MONITOR lamp of the indoor unit turns on with a beep
tone. (2) Select DRY mode with the OPERATION SELECT button. (3) The microprocessor reads the room temperature and determines
the set temperature. Set temperature is as shown on the right
chart. (4) DRY operation will not work when the room temperature is
13°C or below.
9-4. HEAT ( ) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
POWER MONITOR lamp of the indoor unit turns on with a beep
tone. (2) Select HEAT mode with the OPERATION SELECT button. (3) Press TEMPERATURE buttons (TOO WARM or TOO COOL button) to select the desired temperature.
The setting range is 16 ~ 31°C.
9-5. FAN MOTOR CONTROL
1. Rotational frequency feedback control The indoor fan motor is equipped with a rotational frequency sensor, and outputs signal to the microprocessor to feed­back the rotational frequency. Comparing the current rotational frequency with the target rotational frequency (High,Med.,Low) the microprocessor controls SR141 and adjusts fan motor electric current to make the current rotational frequency close to the target rotational frequency. With this control, when the fan speed is switched, the rotational fre­quency changes smoothly.
2. Fan motor lock-up protection When the rotational frequency feedback signal is not output for 12 seconds, (or when the microprocessor cannot detect the signal for 12 seconds) the fan motor is regarded locked-up. Then the electric current to the fan motor is shut off. 3 minutes later, the electric current is applied to the fan motor again. During the fan motor lock-up, the POWER MONITOR lamp flashes to show the fan motor abnormality. (See page 42.)
28
9-6. AUTO VANE OPERATION
1. Vane motor drive These models are equipped with a stepping motor for the horizontal vane. The rotating direction, speed, and angle of the motor are controlled by pulse signals (approx. 12V) transmitted from indoor microprocessor.
2. The horizontal vane angle and mode changes as follows by pressing the VANE CONTROL button.
3. Positioning
The vane is once pressed to the vane stopper below to confirm the standard position and then set to the desired angle. The positioning is decided as follows.
(a) When the OPERATE / STOP(ON / OFF) button is pressed.(POWER ON/OFF) (b) When the vane control is changed AUTO to MANUAL. (c) When the SWING is finished. (d) When the test run starts. (e) When the power supply turns ON.
4. VANE AUTO ( ) mode
In VANE AUTO mode, the microprocessor automatically determines the vane angle and operation to make the optimum room-temperature distribution.
(1) In COOL and DRY operation
Vane angle is fixed to Angle 1.
(2) In HEAT operation
Vane angle is fixed to Angle 4.
5. Dew prevention
During COOL or DRY operation with the vane angle at Angle 4 or 5 when the compressor cumulative operation time exceeds 1 hour, the vane angle automatically changes to Angle 1 for dew prevention.
6 SWING MODE ( )
By pressing the SWING button, vane swings horizontally. The remote controller displays “ ”. SWING MODE is cancelled when any of the following operations are performed.
The unit is turned off.
The vertical vanes will return to their positions just before the swing operation was started.
The operation mode(AUTO, COOL, DRY or HEAT)is changed.
The vertical vanes will return to their positions just before the swing operation was started.
The SWING button is pressed.
The vertical vanes stop at the position when the button is pressed.
29
COOL and DRY
HEAT
About 100-
About 150-
Horizontal AIR FLOW blowing range
7 Horizontal AIR FLOW ( )
Horizontal vane
Set position Angle 1
28:24:
Released
Cold Air Prevention
The vertical vane angle changes as follows by pressing the SWING button.
Press the SWING button.
The vertical vanes begin moving.
When the vertical vanes move to the desired position, press the SWING button again.
The vertical vanes stop moving.
NOTE
If the SWING button is not pressed again within 30 seconds in COOL or DRY mode or within 1 minute in HEAT mode after the vertical vanes start moving, the vertical vanes will automatically return to their original positions.
8. Cold air prevention in HEAT operation. When any of the following conditions occurs in HEAT operation, the vane angle changes to Angle 1 automatically to prevent cold air blowing on users.
Indoor coil thermistor RT12 temperature
Compressor is not operating.Defrosting is performed.Indoor coil thermistor RT12 reads 24: or below.Indoor coil thermistor RT12 temperature is raising from 24°C or
below, but it does not exceed 28:.
NOTE: If the temperature of RT12 reads from 24: to 28: at the air conditioner starting, this control works.
9. ECONO COOL ( ) operation (ECONOmical operation) When the ECONO COOL button is pressed in COOL mode, set temperature is automatically set 2°C higher than that in COOL mode. Also the horizontal vane swings in various cycle according to the temperature of indoor heat exchanger(RT12). SWING operation makes you feel cooler than set temperature. So, even though the set temperature is higher than that in COOL mode, the air conditioner can keep comfort. As a result, energy can be saved. ECONO COOL operation is cancelled when the ECONO COOL button is pressed once again or VANE CONTROL button is pressed or change to other operation mode.
NOTE : ECONO COOL operation not work in COOL mode of “I FEEL CONTROL”. SWING operation
In swing operation of ECONO COOL mode, the initial air flow direction is adjusted to “Horizontal”. According to the temperature of indoor coil thermistor RT12 at starting of this operation, next downward blow time is decided. Then when the downward blow has been finished, next horizontal blow time is decided. For initial 10 minutes the swing operation is performed in table G~H for quick cooling. Also, after 10 minutes when the difference of set temperature and room temperature is more than 2:, the swing operation is performed in table D~H for more cooling. The air conditioner repeats the swing operation in various cycle as follows.
Temperature of indoor
coil thermistor RT12
A B
C D
E F
G
H
15°C or less 15°C to 17°C
17°C to 18°C
18°C to 20°C
20°C to 21°C 21°C to 22°C 22°C to 24°C
more than 24°C
Downward blow time
(sec.)
2 5 8
11 14 17
20 23
30
Horizontal blow time
(sec.)
23 20 17 14 11
8
5
2
9-7. TIMER OPERATION
1. How to set the timer
(1) Press OPERATE/STOP(ON/OFF) button to start the air conditioner. (2) Check that the current time is set correctly. NOTE : Timer operation will not work without setting the current time. Initially “AM0:00” blinks at the current time display
of TIME MONITOR, so set the current time correctly with CLOCK SET button.
(3) Press ON or OFF TIMER buttons to select the operation.
” button... AUTO START operation (ON timer) “ ” button... AUTO STOP operation (OFF timer)
(4) Press HR. and MIN. button to set the timer. Time setting is 10-minute units.
HR. and MIN. button will work when “ ” or “ ” mark is flashing. These marks disappear in 1 minute. After setting the ON timer, check that POWER MONITOR lamp of the indoor unit lights.
NOTE1 : Be sure to place the remote controller at the position where its signal can reach the air conditioner even during
TIMER operation, or the set time may deviate within the range of about 10 minutes.
NOTE2 : Reset the timer in the following cases, or the set time may deviate and other malfunctions may occur.
A power failure occurs.
The circuit breaker functions.
2. Cancel
TIMER setting can be cancelled with the ON or OFF TIMER buttons. (“ ” or “ ”) To cancel the ON timer, press the “ ” button.
To cancel the OFF timer, press the “ ” button. TIMER is cancelled and the display of set time disappears.
PROGRAM TIMER
The OFF timer and ON timer can be used in combination.
” and “ ” display shows the order of the OFF timer and ON timer operation.
(Example 1) The current time is 8:00 PM.
The unit turns off at 11:00 PM, and on at 6:00 AM.
(Example 2) The current time is 11:00 AM.
The unit turns on at 5:00 PM, and off at 9:00 PM.
NOTE : TIMER setting will be cancelled by power failure or breaker functioning.
31
GREEN SIGN
21 22 23 24 25 26 27 28 29 30
GREEN SIGN
21 22 23 24 25 26 27 28 29 30
GREEN SIGN
21 22 23 24 25 26 27 28 29 30
Light up Blinking light
Press once < Cooling >
Press again < Heating >
Press once again < Stop >
EMERGENCY OPERATION switch
Blinking lamp shows the room temperature
Lighting lamp shows the set temperature
Color of the lamp
RED
ORANGE
GREEN
Operating condition The unit operates at high power. The unit operates at middle power. The unit operates with energy-saving.
9-8. EMERGENCY-TEST OPERATION
In case of test run operation or emergency operation, use the EMERGENCY OPERATION switch on the front of the indoor unit. Emergency operation is available when the remote controller is missing, has failed or the batteries of remote controller run down. The unit will start and the POWER MONITOR lamp will light. The first 30 minutes of operation is the test run operation. This operation is for servicing. The indoor fan speed runs at High speed and the system is in continuous operation. (The thermostat is ON.) After 30 minutes of test run operation the system shifts to EMERGENCY COOL/HEAT MODE with a set temperature of 24°C. The fan speed shifts to Med. speed. The coil frost prevention works even in emergency operation, and defrosting too. In the test run or emergency operation, the horizontal vane operates in VANE AUTO mode. Emergency operation continues until the EMERGENCY OPERATION switch is pressed once or twice or the unit receives any signal from the remote controller. In case of latter normal operation will start.
NOTE : Do not press the EMERGENCY OPERATION switch during normal operation.
9-9. POWER MONITOR LAMP
The color of POWER MONITOR lamp is GREEN in any of the following cases.
• When ON-timer is standby
• In DRY operation
• In EMERGENCY operation
• When defrosting of the outdoor unit is being done in HEAT operation
32
9-10. Operational frequency control of outdoor unit
Minimum
frequency
15 15
Model
MSZ-A09RV MSZ-A12RV
COOL (indoor fan speed : High)
Rating
frequency
53 82
Maximum frequency
80
88
Minimum
frequency
16 16
HEAT
Rating
frequency
67 98
Maximum frequency
98
115
DRY
22/27 22/27
1Hr
Time
Maximum frequency
frequency
Rating or under-rating frequency
1. Outline The operational frequency is decided by following the procedures below:
First, set the target operational frequency based on the difference between the room temperature and the set temperature. Second, regulate the target operational frequency by discharge temperature protection, high pressure protection, electric current protection and overload protection and also by the maximum/minimum frequency.
(1) maximum/ minimum frequency in each operation mode.
w The maximum frequency in COOL mode is limited according to operation hours, as shown below.
(2) Frequency change speed
During increasing frequency
Operational frequency MUZ-A09RV- E1 MUZ-A12RV- E1
10Hz to 14Hz 0.5 sec./Hz 15Hz to 79Hz 5 sec./Hz
80Hz to 150Hz 0.5 sec./Hz
During decreasing frequency
Operational frequency MUZ-A09RV- E1 MUZ-A12RV- E1
10Hz to 42Hz 1 sec./Hz
43Hz to 150Hz 0.5 sec./Hz
33
9-11 .Electronic expansion valve control (LEV control)
(1)Outline of LEV control
The LEV basic control is comprised of setting LEV opening degree to the standard opening degrees set for each opera­tional frequency of the compressor. However, when any change in indoor/outdoor temperatures or other factors cause air conditioning load fluctuation, the LEV control also works to correct LEV opening degree based on discharge temperature (Shell temperature) of the compressor, developing the unit’s performance.
(2)Specification of LEV control
Control range from min. 33 pulse to max. 500 pulse. Actuating speed LEV opens 40 pulse/sec. and close 90 pulse/sec. Opening degree adjustment LEV opening degree is always adjusted in opening direction.
standard
specification
Unit OFF LEV remains at max. opening degree (reaches max. opening
Remote controller ON LEV is positioned. (first full-closed at zero pulse and then
During 2 to 15 minutes after compressor starts Opening degree is adjusted according to standard opening
(When reducing the opening degree, LEV is once over­closed, and then adjusted to the proper degree by opening.
degree approx. 15 minutes after compressor stops)
positioned.)
degree. (Standard opening degree is set for each rotational frequen­cy of compressor)
More than 15 minutes have passed since compressor start-up
general operation
Thermostat OFF LEV starts to open every 3 pulse/sec.
Thermostat ON LEV is controlled in the same way as that is after the com-
Defrosting in HEAT mode LEV is adjusted to open 350 pulse.
LEV opening degree is corrected to get target discharge temperature of compressor. (For discharge temperature lower than target temperature, LEV is corrected in closing direction.) (For discharge temperature higher than target temperature, LEV is corrected in opening direction.) wIt may take more than 30 minutes to reach target tempera­ture, depending on operating conditions.
from the same opening degree as that when the Unit turned IFF (and becomes full-opened after approx. 15 minutes.)
pressor has started up.
34
(3) Time chart
OFF Time
Time
ON
The operational frequency of the compressor
Commanded to open
Standard opening degree
Opening degree is corrected according to discharge temperature
Positioning
Air conditioner ON
Air conditioner OFF (thirmostat off)
LEV opening degree
15 min.
06 05 04 03 02
01
LEV opening degree
A(target discharge temperature)
B
C
D
E
F
30 50 70
The operational frequency of the compressor
90 110 130
(Hz)
(4) Control data
(a) Reference value of target discharge temperature
(Cooling
:/Heating :)
A
58/49B60/58C68/67D70/70E72/72F72/72
In COOL mode, the two indoor coil thermistor (one main and one sub) sense temperature ununiformity (super heat) at the heat exchanger, and when temperature difference have developed, the indoor coil thermistors adjust LEV opening to get approximate 10 degrees lower temperature than the target temperature in the table above, thus diminishing super heat.
(b) Reference value of LEV standard degree opening
(COOL/HEAT pulse)
01
110/8002150/10003200/12004200/13005200/13006200/130
35
ON
OFF
ON
OFF
Outdoor fan
Compressor
5 sec. 15 sec.
9-12.Outdoor fan motor control
The AC fan motor turns ON/OFF, interlocking with the compressor. [ON] The AC fan motor turns on 5 seconds before the compressor starts up. [OFF] The AC fan motor turns off 15 seconds after the compressor stops running.
9-13. 4-way valve control
COOL&DRY mode
HEAT mode
w The 4-way valve does not turn ON before the compressor starts up.
. . . . . . . . .
. . . . . . . . . . . . . . .
ON(voltage applied)
The 4-way valve turns ON as soon as thermostat turns ON. The 4-way valve turns OFF 15 minutes after the thermostat turns OFF.
OFF(voltage not applied)
During normal HEAT operation the 4-way valve is OFF.
<COOL>
5 seconds
ON OFF
ON OFF
ON OFF
Compressor
4-way valve
Outdoor fan
<HEAT>
5 seconds
36
9-14. Indoor fan motor control
Microprocessor
controller board
220~240V AC
SSR output
Rotational frequency
every 100Hz pulse output
AC motor
actuator (SSR)
AC motor
Rotational frequency sensor part
Output Input
The detected rotational frequency of the fan motor is feed backed to the microprocessor and then the microprocessor works to keep the rotational frequency at a fixed value against load fluctuation.
(1) Circuit block diagram
(2) Control system
<Output side>
The microprocessor outputs pulse every 100Hz (every 50Hz in half wave). (Fan speed varies according to the time span between a Zero-cross point on the commercial wave and a pulse out put point.)
<Input side>
The microprocessor detects rotational frequency of AC fan motor, using Hall element in AC fan motor.
The microproces­sor drives SSR on relay P.C. board.
The microprocessor adjusts rotational frequency. If feed backed pulses are not detected for 12 seconds, fan motor becomes abnormal and indoor POWER MONITOR lamp flashes to show abnormality.
Controlled voltage is applied to AC fan motor.
37
10 SERVICE FUNCTIONS
Jumper wire Change point
Deforst finish temperature changes from 13: to 15:.
JP7
MSZ-A09RV - MUZ-A09RV ­MSZ-A12RV - MUZ-A12RV -
E1E1
E1E1
10-1. CHANGE IN DEFROST SETTING
<JP7> When the JP7 wire of the outdoor electronic control P.C. board is cut, the defrost temperature will be changed.
(Refer to page 55.)
10-2. TIMER SHORT MODE
For service, set time can be shortened by short circuit of JPG and JPS the electronic control P.C. board. The time will be shortened as follows. (Refer to page 54.) 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.)
10-3. 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 indoor unit number.
How to modify the remote controller P.C. board
Remove batteries before modification. The board has a print as shown below;
NOTE : Fore re-modelling, take out the batteries at first.
After finish re-modelling, put back the batteries then push the RESET-button.
The P.C. board has the print “J1” and “J2”. Jumper wires are mounted to each “J1” and “J2”.Cut “J1” and “J2” according to the number of indoor unit as shown in Table 1. After modification, push the RESET. button near the MIN-button on the remote controller.
Table1.
1 unit operation
No.1 unit
No modification No.2 unit No.3 unit No.4 unit
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 accepts 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.
2 unit operation
Same as at left
Cut J1
38
3 unit operation
Same as at left Same as at left
Cut J2
4 unit operation
Same as at left Same as at left Same as at left
Cut both J1 and J2
10-4. AUTO RESTART FUNCTION
C11
52C
CN201
CN112
CN121SW
CN111
IC101
CN211
CN151
JR07
When the indoor unit is controlled with the remote controller, the operation mode, the set temperature, and the fan speed are memorized by the indoor electronic control P.C.board. The “AUTO RESTART FUNCTION” sets to work the moment the power has restored after power failure, then, the unit will restart automatically. If the unit is operated in “I FEELCON­TROL.” mode before power failure, the operation is not memorized. In “I FEEL CONTROL.” mode, the operation is decid­ed by the initial room temperature at (re)start.
How to set “AUTO RESTART FUNCTION”
1Turn off the main power for the unit. 2Remove the indoor electronic control P.C. board and the display P.C.board.(See page 57.) 3Pull the indoor electronic control P.C. board forward and cut the RESISTOR JR07 on it.
Operation
1If the main power (220-240V AC) has been cut, the operation settings remain. 2After the power is restored, the unit restarts automatically according to the memory.(However, it takes at least 3 minutes
for the compressor to start running.)
NOTE:
The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote
controller.
If the main power is turned off or a power failure occurs while AUTO START/STOP timer is active, the timer setting is
cancelled.
If the unit has been off with the remote controller before power failure, the auto restart function does not work as the
power button of the remote controller is off.
To prevent breaker off due to the rush of starting current, systematize other home appliances not to turn on at the same
time.
When some air conditioners are connected to the same supply system, if they are operated before power failure, the
starting current of all the compressors may flow simultaneously at restart. Therefore, the special counter-measures are required to prevent the main voltage-drop or the rush of the starting current by adding to the system that allows the units to start one by one.
39
TROUBLESHOOTING11
Housing point
Insert the negative pole of the batteries first. Check if the polarity of the battereis is correct.
RESET button
Cover
Relay P.C. board
Electronic control P.C. board
MSZ-A09RV ­MSZ-A12RV -
E1
MUZ-A09RV -
E1
MUZ-A12RV -
E1
E1
11-1. Cautions on troubleshooting
1. Before troubleshooting, check the following:
1) Check the power supply voltage.
2) Check the indoor/outdoor connecting wire for mis-wiring.
2. Take care the following during servicing.
1) Before servicing the air conditioner, be sure to first turn off the remote controller to stop the unit, and then after con­firming the horizontal vane is closed, turn off the breaker and / or disconnect the power plug.
2) Be sure to unplug the power cord before removing the front panel, the cabinet, the top panel, and the P.C. boards.
3) When removing the P.C. board, hold the edge of the board with care NOT to apply stress on the components.
4) When connecting or disconnecting the connectors, hold the housing of the connector, DO NOT pull the lead wires.
Lead wiring
3. Caution for the outdoor unit repair service
1) Do not load on the P.C.board cover.
2) Since every P.C.board circuit links directly with power supply 220~240V AC, do not short the P.C.board and metal section on servicing. Also if touch the parts on the P.C.board, it may cause an electric shock.
3) When closing the P.C.board cover, prevent a foreign matter or dust from coming inside the P.C.board.
3. Troubleshooting procedure
1) First, check if the POWER MONITOR lamp on the indoor unit is flashing on and off to indicate an abnormality. To make sure, check how many times the abnormality indication is flashing on and off before starting service work.
2) Before servicing check that the connector and terminal are connected properly.
3) If the P.C. board is supposed to be defective, check the copper foil pattern for disconnection and the components for bursting and discoloration.
4) When troubleshooting, refer to the flow chart on page 41 and the check table on page 42 and 43.
4. How to replace batteries
Weak batteries may cause the remote controller malfunction. In this case, the remote controller can not be repaired only by the battery replacement. To operate the remote controller normally, replace the batteries in the following order. This remote controller has the RESET button. After refilling new batteries, press the RESET button with tip end of ball point pen or the like, and then use the remote controller.
1 Remove the back lid and replace batteries.
Then re-attach the back lid.
2 Press the RESET button.
40
11-2. Troubleshooting procedure
The following procedure facilitates identifying defective points. The abnormalities in
Indoor unit dose not respond to remote controller.
Refer to G ‘Check of indoor electronic control P.C. board’ on page 49.
can be located in the Troubleshooting check table on page 42~43.
Power monitor lamp flashes.
Operation start
Indoor unit does not respond to remote controller. In addition, operation Power monitor lamp dose not light up, with emer­gency operation switch ON.
Refer H ‘Check of indoor electronic P.C. board’ on page 50.
3 time flash
2.5 seconds OFF
Indoor fan motor dose not run.
1-time flash
2.5 seconds or
0.5 seconds OFF
Cause:indoor/outdoor unit
Mis-wiring
· Serial signal error
·
Refer to ‘Checking serial signal error’ on page 44.
Inverter/Compressor
2 time flash
2.5 seconds OFF
Cause: in Indoor unit
Main indoor coil ther-
· mistor abnormality
Room temperature
· thermistor abnormality
Sub indoor coil thermis-
· tor abnormality
Check : indoor/outdoor Mis-wiring on page 44.
5-time flash
2.5 seconds OFF 6-time flash
2.5 seconds OFF 12-time flash
2.5seconds OFF
Check :
· Main indoor coil thermistor
· Room temperature thermistor
· Sub indoor coil
thermistor
Cause: in outdoor unit
Outdoor power sys-
· tem abnormality Outdoor unit temper-
· ature thermistor abnormality
·Outdoor converter power system abnor­mality.
Refer to I ‘Check of out­door thermistors’ on page 50.
Refer to F ‘Check of indoor fan motor’ on
page 49.
7 time flash
2.5 seconds OFF
Cause: in outdoor unit
Outdoor control system
· error
Check : Outdoor electronic control P.C. board.
Refer to A ~ E ‘Compressor’ on page 47 and 48.
wIn case of serial signal
error, the mis-wiring indication will appear by turning the power off and then turning it back on.
Refer to A ~ E ‘Transistor module’ on page 47 and 48.
Refer to L 'Check
of power supply' on page 52.
Outdoor electronic
control P.C. board.
Refer to J ‘Check of R.V. coil’ on page
51.
Refer to N ‘Check of elec­tronic control P.C. board in the outdoor unit’ on page 52.
41
Refer to K ‘Check of outdoor fan motor’ on page 51.
Refer to P ‘Check of linear expansion valve (LEV)’ on page 53.
1. Troubleshooting check table (Indoor unit troubleshooting check table)
No.
1
w2
w3
5
6
7
Symptom
POWER MONITOR lamp
Abnormal point Detection method Checkpoint
Outdoor unit does not operate
repeated flashes every 0.5 seconds
1-time flash
2.5 seconds OFF
2-time flash
2.5 seconds OFF
5-time flash
2.5 seconds OFF
Mis-Wiring
Serial signal
Outdoor power system
6-time flash
2.5 seconds OFF
Outdoor thermistors
7-time flash
2.5 seconds OFF
Outdoor control system
Main indoor coil thermistor Sub indoor coil thermistor Room temperature thermistor
When indoor electronic control P.C. board does not receive serial signals for 4 to 5 seconds with OPERATION/STOP(ON/OFF) button of remote controller ON and 52C relay ON for the first time, NOTE: In case of serial signal error, mis-wiring
indication will appear by turning power off and then turning it back on.
When indoor electronic control P.C. board does not receive serial signals from outdoor unit for 4 to 5 seconds.
Indoor electronic control P.C. board constantly detects resistance every 8 seconds. When thermistor shorts or opens.
When compressor has stopped due to overcurrent protection or start-up failure protection 3 times in a row within 1 min. after start-up.
<Thermistor short> Thermistors are abnormal when they short after compressor start-up. <Thermistor open> Thermistors are abnormal when they open after compressor start-up. However, discharge temperature thermistor is abnormal when open circuit is detected more than 10 min. after compressor start-up.
When nonvolatile memory data cannot be read properly on outdoor electronic control P.C. board, outdoor unit stops and restarts 3 minutes later,
· Shortage of refrigerant
· Outdoor electronic control P.C. board
Refer to I "Check
of outdoor thermistors" on page 50.
Refer to the characteristics of main indoor coil thermistor, sub indoor coil thermistor and room temperature on page
54.
Refer to "How to check inverter/compressor" on page 47.
Replace outdoor electronic control P.C. board.
Refer to 'Checking serial signal error' on page 44.
w4
3-time flash
2.5 seconds OFF
Indoor fan motor
When rotational frequency feedback signal is not emit during 12-second indoor fan operation.
Refer to F "Check of indoor fan motor" on page 49.
8
12-time flash
2.5 seconds OFF
Converter power system
When the converter protective suspension within 1 minute after start-up of the converter is operated 5 times successively. Also bus-bar voltage malfunction (140V or less or 400V or more) within 1 minute after start-up of the converter has happened 5 times successively.
Refer to N "Check of outdoor electronic control P.C.board" on page 52.
MSZ-A09RV -
MSZ-A12RV -
· Flashing of the POWER MONITOR lamp indicates possible abnormalities.
· The POWER MONITOR lamp is lighting during normal operation.
E1 E1
flash
wWhen the indoor unit has started operation and the above detection method has detected an abnormality (the first detection
after the power ON), the electronic control P.C. board turns OFF the 52C and the indoor fan motor with the operation indica­tor lamp lighting.
When the 52C and the indoor fan motor are turned ON again 3 minutes later and the same abnormality is detected (a sec-
ond detection of the above abnormality after the power ON), the control P.C. board turns OFF the 52C and the indoor fan motor with the operation indicator lamp flashing.
However, the first detection is cleared in case the power is turned OFF after the first detection.
42
(Outdoor LED indication table)
MUZ-A09RV ­MUZ-A12RV -
E1 E1
NOTE 1. The location of LED is illustrated at the right figure.
2. LED lights up during normal operation.
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Symptom
Outdoor unit does not operate
'Outdoor unit stops and restarts 3 min. later' is repeated
Outdoor unit operates (at low frequency)
Outdoor unit operates
LED indication
1-time flash every
2.5 seconds
NOTE: For abnormality location, refer to 'Indoor troubleshooting check table' on page 43.
2-time flash
2.5 seconds OFF 3-time flash
2.5 seconds OFF
4-time flash
2.5 seconds OFF
5-time flash
2.5 seconds OFF
7-time flash
2.5 seconds OFF
8-time flash
2.5 seconds OFF
1-time flash
2.5 seconds OFF 3-time flash
2.5 seconds OFF
4-time flash
2.5 seconds OFF
5-time flash
2.5 seconds OFF
7-time flash
2.5 seconds OFF
8-time flash
2.5 seconds OFF
9-time flash
2.5 seconds OFF
Abnormal point
Converter power system
Outdoor power system
Outdoor thermistors
Outdoor control system
Over current protection
Discharge temperature overheat protection
Fin temperature thermistor overheat protection
High pressure protection
Mis-start up protection
Position detection protection
Frequency drop by current protection
Frequency drop by high pressure protection
Frequency drop by defrosting in COOL mode
Frequency drop by, discharge temperature protection
Outdoor thermistors Defrost thermistor
low discharge temperature protection
Converter protection
Inverter check mode
When the converter protective suspension within 1 minute after start-up of the converter is operated 5 times successively. Also bus-bat voltage malfunction (140V or less or 400V or more) within 1 minute after- start-up of the converter has happened 5 times successively.
When compressor has stopped by overcurrent protection or start-up failure protection within 1 min. after compressor start­up 3 times in a row, compressor stops and then restarts 3 min. later.
When discharge temperature thermistor or fin temperature thermistor shorts or opens during compressor running, compressor stops and restarts 3 min. later.
When nonvolatile memory date cannot be read properly, compressor stops and restarts 3 min. later.
When 19A current flows into power transistor, compressor stops and restarts 3 min. later,
When discharge temperature thermistor exceeds 116:, compressor stops and restarts 3 min. later. (Compressor restarts when discharge temperature thermistor reads 100: or below.)
When temperature at heat sink exceeds 88: or outdoor electronic control P.C. board exceeds 67:, compressor stops and restarts 3 min. later.
When indoor coil thermistor exceeds 75:, compressor stops and restarts 3 min. later.
When switching from forced drive to normal drive (synchronised operation by a position detectable signal) failed 5 times successively at compressor start-up. Restart-up after suspension when miss start-up or abnormal position detecting within 10 seconds after start-up.
When the position detectable signal is not input during normal starting up (synchronised operation by a position detectable signal) after 10 seconds of compressor operation.
When current from power outlet exceeds 10. A, compressor frequency lowers.
When indoor coil thermistor exceeds 55: in HEAT mode, compressor frequency lowers.
When indoor coil thermistor reads 8: or below in COOL mode, compressor frequency lowers.
When discharge temperature thermistor exceeds 111:, compressor frequency lowers.
When defrost thermistor short or open. w In this case, compressor continues running.
When discharge temperature has been 50: or below for 20 min.
When the converter suspends for protection
•Response abnormal suspension
•Bus-bar voltage abnormal suspension
•Converter overcurrent/ over voltage protective suspension
•Converter current detection abnormal suspension
•Converter zero cross abnormal suspension When disconnecting the compressor connector, going to
inverter check mode.
<Outdoor electronic control P.C. board>
IPM
PFC
Flashing
LED
Detection method Checkpoint
· Refer to N 'Check of electronic control P.C. board on page 52.
· Refer to 'Checking inverter/ compressor on page 47.
· Refer to I 'Check of outdoor thermistors' on page 50.
Replace outdoor electronic control P.C. board.
Refer to A-E in 'How to check inverter/ compressor' on page 47~ 48.
· Check refrigerant circuit and refrigerant amount.
· Refer to I'Check of outdoor thermistor' on page 50.
· Check around outdoor unit.
· Check outdoor unit air passage.
· Check refrigerant circuit and refrigerant amount.
· Check stop valve.
Check and replace as follows. 1 Check the compressor connecting lead
wire between connector and transistor module.
2 Check outdoor electronic control
P.C. board. (Position detecting circuit IPM, Micro computer, etc)
3 Compressor replacement
Refer to A~E Inverter Compressor simple check method on page 47 and 48.
The unit is normal, but check the following.
· Check if indoor filters are clogged
· Check if refrigerant is short.
· Check if indoor/outdoor unit air outlets are short cycled.
Refer to I 'Check of outdoor thermistors' on page 50.
Refer to I 'Check of outdoor thermistors' on page 50.
· Refer to P 'Check of LEV' on page 53.
· Check refrigerant circuit and refrigerant amount.
· Refer to N 'Check of electronic
control P.C. board on page 52.
· Refer to A~E Inverter Compressor simple check method on page 47 and 48.
43
2. Checking mis-wiring and serial signal error.
1. Turn OFF power supply.
2. Turn ON power supply.
3. Press the EMERGENCY OPERATION switch.
Is the self-check function of indoor unit indicated when relay 52C turns ON 3min. later? wShort circuit of JPS (one-hour short circuit jumber cable) and JPG (GND
resistance) enables self-check function to be indicated within 3 min.
Is there indoor-outdoor mis-wiring, poor contact, or disconnection?
Is there approx. 220-240V AC between outdoor terminal block 2 and 1 ?
Is mis-wiring or serial signal error indicated when relay 52C turns ON 3 min. later?
Is there 370V DC between both ends of smoothing capacitor(C62) on the electronic control P.C. board?
Replace in-out connecting wire.
Does Power monitor lamp (on the right-hand side) flash on and off when OPERATE/STOP(ON/OFF) button on remote controller is pressed?
w1 If there is any error in
serial signal system, the mis-wiring indication will appear by turning the power off and then turning it back
w2 Mis-wiring may damage the electronic
control P.C. board during the operation in the left. Be sure to confirm the wiring is correct before the operation starts.
w3 Replace indoor
electronic control P.C. board.
w3 Be sure to release the
failure-mode recall function after checking.
w The serial signal indication on the Power
monitor lamp (right side) facilitates checking abnormality, based on the failure-mode
Mis-wiring indication
No
No
Yes
Correct wiring
Replace outdoor electronic control P.C. board.
· Main circuit
· Reactor
· Noise filter P.C. board
· Connection of connector
Yes
A
B
Turn off power supply and confirm that indoor-outdoor wiring is correct. Short-circuit indoor terminal block N and 3. While pressing OPERATE-STOP(ON/OFF) button on remote controller, press RESET button. (The above procedure allows Power monitor lamp to indicate the failure-mode) w2
Open-circuit indoor terminal block N and 3, Check if there is amplitude of 5 to 10VDC between outdoor terminal block N and 3 (for confirmation of serial signal) and if there is 220-240V AC between 2 and N.
1. Unplug the power cord.
2. Disconnect the connector between compressor and IPM.
3. Plug the power cord.
4. Press EMERGENCY OPERATION switch.
2.5 seconds OFFON ON
Serial signal error indication
defective
Yes
No
Yes
Yes
No
Yes
No
(light up or OFF)
· Turn off inverter­controlled lighting equipment.
· Plug the power cord.
· Press EMERGENCY OPERATION switch.
A
B
· Keep the unit away from fluorescent light.
· Attach a filter to light­intercepting part.
Green Sign
flash
21
22 24 30292827
262523
Outdoor unit does not operate. When the POWER MONITOR lamp (on the left-hand side) flashes on and off continuously or only once.
44
3. Trouble shooting procedure of main parts
23
W
U
V
1
WHT
Compressor motor
RED BLK
2 3
1
WHT
RED
BLK
(Simple check method of main parts)
MSZ-A09RV - MUZ-A09RV ­MSZ-A12RV - MUZ-A12RV -
Checking method and criterionPart name
Room temperature thermistor(RT11)
Indoor coil ther­mistor (RT12,RT13)
Defrost thermistor (RT62)
Discharge temperature thermistor (RT61)
Disconnect the connector and measure the resistance with a tester. (Part temperature : 10:~30:)
Disconnect the connector and measure the resistance with a tester. (Part temperature : -10:~40:)
Disconnect the connector and measure the resistance with a tester. Before measurement, hold the thermistor with your hands to warm it up. (Part temperature : 20:~40:)
E1E1 E1E1
Normal Abnormal
8k"~20K" Open or short circuit
Normal Abnormal
5k"~55K" Open or short circuit
Normal Abnormal
100k"~250K" Open or short circuit
Fin temperature thermistor (RT64)
Compressor (MC)
Indoor fan motor(MF)
Disconnect the connector and measure the resistance with a tester. (Part temperature : -10:~80:)
Normal Abnormal
5k"~30K" Open or short circuit
Disconnect the connector and measure the resistance between the terminals with a tester. (Winding temperature : -10:~40:)
Normal Abnormal
0.82"~1.01" Open or short circuit
Measure the resistance between the terminals with a tester. (Winding temperature : 10:~30:)
Terminal
(CN211)
Normal Abnormal
WHT-BLK 280"~304"
BLK-RED 311"~338"
Open or short circuit
45
Outdoor fan
WHT
RED
BLK
P
YLW
ORN
LEV
WHT6
RED1
ORG4
YLW5
BRN2
BLU3
ORN
BLUYLW
RED
PNK
ROTOR
motor(MF61)
Checking method and criterionPart name Measure the resistance between the terminals with a tester.
(Winding temperature : -10:~40:)
Terminal Normal Abnormal WHT-BLK 173.7'~212.6' BLK-RED 277.8'~339.9' Open or short circuit
YLW-BLK 11.4'~14.1'
Horizontal vane motor(MV1) Vertical vane motor(MV2)
R.V. coil (21S4)
Linear expan­sion valve (LEV)
Measure the resistance between the RED terminal and the other ones. (Winding temperature : 20:~30:)
Normal Abnormal
approx. 300' in each phase
Open or short circuit.
Measure the resistance between the terminals with a tester. (Part temperature : -10:~40:)
Normal Abnormal
882'~1079'
Open or short circuit.
Measure the resistance with a tester. (Part temperature : -10:~40:)
Terminal (CN724)
Normal Abnormal
WHT-RED RED-ORN
YLW-BRN
42'~52' Open or short circuit
BRN-BLU
46
(How to check inverter/compressor)
Check of open phase
A
Be sure to use the analog voltmeter for measurement
Disconnect the connector between compressor and IPM , activate
the inverter and measure the balance of voltage between terminals.
Output voltage : 120V
<< Operation method>> Start heating opration by pressing the Emergency operation switch on the indoor unit. (test-run mode) <<Measurement point>>
at 3 points BLK-WHT BLK-RED WHT-RED
NOTE Measure AC voltage, at 3 points more than one minute ofter
the outdoor fan motor starts running.
Check of IPM
B
Disconnect the connector between compressor and IPM, and measure resistance between terminals on the IPM.
<<Measurement point>> at 6 points BLK-WHT, WHT-BLK BLK-RED, RED-BLK WHT-RED, RED-WHT at 6 points <<Judgment>> Infinite ["]···········normal 0~dozens of ······abnormal (short)
w Measure resistance between the lead wires at 3 points
ohmmeter indication
Normal (infinite)
Abnormal (0~dozens of ")
X1
"
X1
"
2.5 seconds OFF9 flashes
<Outdoor electronic control P.C. board>
LED
IPM
PFC
Note1.Output voltage changes depending power supply
voltage. (Max. i10%)
2. Measure by analogue tester.
3. During the measurement, LED in the outdoor electronic control P.C. board flashes 9 times.
flash
Start
Check voltage between terminals.
Are voltages
balanced?
Yes
Check compressor.
Disconnect the connector between compressor and IPM.
See A 'Check of open phase.'
No
Check resistance of IPM.
Is resistance infinite?
See C 'Check of compressor.'
See B 'Check of IPM.'
Yes
No (0~several
")
Outdoor electronic control P.C. board is defective.
Replace outdoor elec­tronic control P.C. board and IPM.
IPM is defective.
47
Check of compressor winding
D
Check of compressor
C
Disconnect the connector between compressor and IPM, and measure resistance between the compressor terminals.
<<Measurement point>>
at 3 points BLK-WHT BLK-RED WHT-RED
<<Judgment>>
0.82 to 1.01" at -10: to 40: of part temperature. 0["] ···············abnormal [short] Infinite["] ·······abnormal [open] NOTE 1.Be sure to zero the ohmmeter before measurement.
2.Winding resistance for each phase is 0.45" at 20:.
Check of compressor operation time
E
Connect the compressor and activate the inverter. Then measure the time until the inverter stops due to overcurrent.
<<Operation method>>
Start heating or cooling operation by pressing the emergency operation switch on the indoor unit. (Test-run mode)
<<Measurement>> Measure the time from the start of outdoor fan running till the
stop of the inverter due to overcurrent.
<<Judgment>>
For reference 0~10 seconds·····················abnormal (short) 10~60 seconds···················abnormal (compressor lock-out) 60 seconds~5 minutes·······abnormal (refrigerant circuit defect) more than 5 minutes···········normal
w Measure resistace between the lead wires at 3 points.
Outdoor fan starts Abnormal (Compressor short circuit or layer short)
Abnormal (Compressor lock-out)
Abnormal (refrigerant circuit defect, etc.)
Normal
0 sec.
10 sec.
60 sec.
5 min.
Normal (1~several ")
Abnormal (0" ····· short)
Abnormal (infinite····· open)
Ohmmeter indication
Check resistance of compressor.
Check compressor operation time.
Ok
Compressor is short or open.
Replace compressor.
See D 'Check of compressor winding'.
Is resistance
1~several " at -10:
~ 40: of winding
temperature?
Does compressor run
continuously?
See E ' Check of compressor operation time,'
No
Compressor is layer short or lock-out. Refrigerant circuit is defective.
Replace compressor. Check refrigerant circuit.
No
Yes
X1
"
X1
"
X1
"
23
W
U
V
1
WHT
Compressor motor
RED BLK
Yes
48
Re-install the unit away from the lights.
Attach a filter to light­intercepting part.
Check of remote controller and indoor electronic control P.C. board.
G
Check of indoor fan motor
F
Turn off power supply and check connector CN 211 visually.
Are lead wires disconnected?
No
No
Yes
Yes
No
No
Yes
Yes
Ok
Disconnect lead wires from CN 211 on indoor electronic control P.C. board. Measure resistance between lead wire 1 and 3 and then 2 and 3.
Yes
Yes
No
No
(not clear)
No
Yes
(How to check main parts)
Indoor fan does not operate.
Indoor unit operates by pressing the emergency operation switch.
Is soldered point abnormal?
Re-connect lead wires.
Is LCD display on remote controller visible?
Does the unit operate with remote controller?
Is noise heard from the radio?
Are there any fluorescent lights of inverter or radio start type within 1 meter?
Is resistance 0" (short) or " (open) ?
Re-solder it.
Replace batteries and then press RESET button. See page 40.
Replace indoor fan motor.
Replace indoor electronic control P.C. board.
CN211
3 2 1
fan
motor
Indoor electronic control P.C. board
Check the model name of remote controller.
Remove batteries, then set them back and press the reset button.
Tune a radio in to AM and press OPERATE/STOP (ON/OFF)button on remote controller.
Replace remote controller.
Model name and part No. are witten here.
Back side of remote controller
()
LD101 1 2 3 4 5
1 2 3 4 5
Remote controller
Indoor electronic control P.C. board
light-interception ihdication board
Replace the indoor electronic control P.C. board with power monitor, receiver P.C. board.
49
Check of outdoor thermistors
I
Check of indoor electronic P.C. board
H
Measure resistance between CN 6411 and 2
.
Measure resistance between CN 6421 and 2
.
No
Yes
The unit does not operate with the remote controller. The POWER MONITOR lamp does not light up either, with the Emergency operation switch on.
Thermistors in the outdoor unit are abnormal.
Re-connect the connector.
Indoor electronic control P.C. board
Varistor (NR11)
Indoor electronic control P.C. board
Fuse (F11)
1 3
N 2 3
Thermal fuse connector
Disconnect the connectors CN 641 and CN 642 from the outdoor electronic control P.C. board. (Check the characteristics of each thermistor.)
1 Connect CN 641 and
CN 642.
2 Disconnect the
connector between compressor and IPM.
(Defrost thermistor)
Measure resistance between CN 6413 and 4
.
Turn on power supply to indoor unit and press emergency operation switch.
Discharge temperature thermistor
()
Fin temperature thermistor
()
Does the unit operate 10 minutes or more?
No
Yes
Terminal
block
Is LED in the outdoor electronic control P.C. board flashing 5 minutes?
Replace the outdoor electronic control P.C. board.
No
Yes
Does the resistance of thermistor have the characteristics on page 55?
Replace the thermistor.
Check both “parts side” and “pattern side” of indoor electronic control P.C. board visually.
Replace the fuse.
Is fuse(F11) blown?
Be sure to check both fuse and varistor in any case.
Replace the fan motor.
Replace the indoor electronic control P.C. board.
Is winding resistance of fan motor 0 "?
Is winding resistance of vane motor 0 "?
No
Yes
Replace the vane motor.
No
Yes
Yes
Is varistor(NR11) burnt?
Replace the varistor.
Yes
Turn off the power supply. Remove indoor fan motor connector CN211 and vane motor connector CN151 from the indoor electronic control P.C. board and turn on the power supply.
No
No
Does the unit operate with the remote controller? Does the POWER MONITOR lamp light up by pressing the emergency operation switch?
Yes
No
Be sure to check both resistance.
50
Check of outdoor fan motor
K
Check of R.V. coil
J
Disconnect connector between compressor and IPM.
Turn on power supply to indoor unit, and press emergency operation switch to heating operation.
Heating operation works when cooling is expected.
Outdoor fan motor does not work.
· Press emergency operation switch again to check if 52C relay works.
· Re-connect connecting wire of indoor and outdoor unit.
· Replace the indoor electronic control P.C. board.
· Replace the lead wires of outdoor fan motor.
· Re-connect connector CN 771
· Replace the outdoor fan motor.
Replace the R.V. coil.
Replace the relay P.C. board.
• If the connector CN 913 is connected or the R.V. coil is open, the voltage occurs between the terminals even when the control is OFF.
3 min. after power turns on, is there voltage of 220-240V AC between CN 913 1 and 2 on relay P.C. board ?
3 minutes after power turns on, is there voltage of 220-240V AC between outdoor terminal block 2 and N?
Is there voltage of approx. 220-240V AC either between 2 and 3 or between 2 and 4 or between 2 and 5 at CN 771?
Indoor -outdoor connecting wire
Outdoor terminal block TB1
N 2 3
Disconnect connector CN 771 on relay P.C. board. Disconnect connector between compressor and IPM.
Turn on power supply to indoor unit, and press emergency operation switch.
3 minites after power turns on, measure voltage between terminals of CN 771.
1
CN913
Relay P.C. board
2
4-way valve
AC 220-240V
Yes
Yes
Yes
No
No
No
CN771
Relay P.C. board
1
23
4
56
Fan
motor
Indoor-outdoor connecting wire
Outdoor terminal block TB1
N 2 3
Cooling operation works when heating is expected.
•First, measure resistance of the R.V. coil to check if it is defective or not.
• If the connector CN 913 is connected or the R.V. coil is open, the voltage occurs between the terminals even when the control is OFF.
Replace the relay P.C. board.
Is there voltage of 0V between CN 912 1 (+)and 2 (-) on relay P.C. board?
Approx. 1V DC voltage occurs.
Yes
Replace the outdoor electrinic control P.C. board.
Disconnect connector between compressor and IPM.
Turn on power to indoor unit, and press emergency operation switch to cooling opeation.
3 min. after power turns on, is there voltage of 220­240V AC between CN 913 1 and 2 on relay P.C.
Yes
No
Replace the relay P.C. board.
Is there voltage of 1V DC between CN 912 1 (+)and 2 (-) on relay P.C. board?
No The voltage is 0V
Yes
· Replace the lead wires of R.V. coil.
· Re-connect connector.
· Replace the 4-way valve.
Replace the outdoor electrinic control P.C. board.
51
Check of thermal fuse
M
Check of power supply
L
3 minutes after power turns on, is there voltage of approx. 220-240V AC between outdoor terminal block 2and N?
Unplug the power cord. Replace thermal fuse.
Inverter does not work.
· Press emergency operation switch again to check if 52C relay works.
· Re-connect connecting wire of indoor and outdoor unit.
· Replace the indoor electronic control P.C. board.
Repair according to the LED indication.
Replace the outdoor electronic control P.C. board.
Ok
Ok
Is there approx. 370V DC between both ends of smoothing capacitor (C62) on outdoor electronic control P.C. board?
Dose LED light up or flash on outdoor electronic control P.C. board.?
Is resistance between connector CN 201 1 on indoor electronic control P.C. board and terminal block N?
Yes
No
No
No
Flash
(How to check power supply and others)
Yes
No
CN201
Indoor electronic control P.C. board.
Check the applicable parts by LED indication.
Check of outdoor electronic control P.C. board
N
Cooling/heating does not operate. (Speed of compressor rotation does not inclease.)
Replace the outdoor electronic control P.C. board.
Does the outdoor unit fan operate nomally?
Check the connecting CN911 in the relay P.C. board and CN726 in the outdoor electronic control P.C. board.
Turn on power supply to indoor unit, and press emergency operation switch.
Check LED indication in the outdoor electronic control P.C. board.
No
Check the outdoor fan motor. (Refer to page 46.)
Yes
Except 8-time flashing
8-time flashing
Converter protect suspension.
· Main circuit
· Reactor
· Noise filter P.C. board
· Connection of connector
defective
Yes
Dose LED flash or light up on outdoor electronic control P.C. board.?
Yes
Light up
LED
Outdoor electronic control P.C. board
C62
(+)
(-)
370V DC
Disconnect connector between compressor and IPM. Turn on power supply to indoor unit and press emergency operation switch.
· Press emergency operation switch again to check if 52C relay works.
· Re-connect connecting wire of indoor and outdoor unit.
· Replace the indoor electronic control P.C. board.
52
Replace LEV. (coil defect)
Replace LEV.
Check of linear expansion valve (LEV)
P
• Press RESET button, while pressing OPERATION SELECT button on remote controller. (All displays on operational display section are ON.)
• With remote controller set toward the indoor unit, press OPERATE/STOP(ON/OFF) button and confirm one beep tone.
• With remote controller set toward the indoor unit, OPERATE/STOP(ON/OFF) button and confirm two beep tones.
Confirm again that LEV is operating.
Replace outdoor electronic control P.C. board.
LEV operates in full-opening direction.
· Is LEV connector connected?
· Is LEV coil properly fixed to the body?
Heating/Cooling do not operate.
Ok
Do you hear LEV "click, click·······"? Do you touch LEV and feel it vibrate?
Does the resistance of LEV coil have the characteristics?
Do you hear LEV "click, click·········"?
No
Yes
Yes
Yes
Ok
Yes
Yes
No
No
LEV (CN 724) WHT(6)–RED(1) RED(1)–ORE(4) YLW(5)–BRN(2) BRN(2)–BLU(3)
resistance
39"~56"
Characteristics of LEV coil
After you have followed the entire flow chart of "Check of linear expansion valve (LEV)", be sure to follow the procedure below.
Replace current limiting resistor.
Check of rush current limiting circuit
O
Outdoor unit does not operate or stops immediately due to overcurrent.
NOTE : When the current limiting resistor is open, the rush current limiting relay may not be working properly. There fore confirm the limiting resistor works properly after replacing it.
Ok
Does current limiting resistor detect 10"?
No
Yes
Start
· Re-connect the connector.
· Properly fix LEV coil to the body.
No
1Press EMERGENCY OPERATION switch. 2Unplug the power cord and then plug it again. 3Press RESET button on remote controller.
53
TEST POINT DIAGRAM AND VOLTAGE
0
0
10
20
30
40
10 20 30 40 50 60
MSZ-A09RV ­MSZ-A12RV -
E1
E1
Indoor electronic control P.C. board
12V DC
Varistor (NR11)
--
{
+
Fuse 250V AC 3.15A
Fan motor power supply
}
}
Room temperature thermistor (RT11)
Timer short mode point
Main indoor coil thermistor (RT12)
Sub indoor coil thermistor (RT13)
Power supply input 220­240V AC
How to set “Auto restart function” Cut the Resistor JR07.(Refer page 39.)
54
Emergency operation switch
+
5V DC
}
--
Indoor coil thermistor (RT12, 13) Room temperature thermistor (RT11)
)
''
Resistance (k
;;
Temperature (
)
-20 -10 0 10 20 30 40
0
10
20
30
40
50
60
70
80
90
100
Temperature(:)
Defrost thermistor(RT62)
Temperature(:)
Discharge temperature thermistor(RT61)
0 102030405060708090100110120
0
100
200
300
400
500
600
700
0 1020304050607080
0
20
40
60
80
100
120
140
160
180
200
Temperature(:)
Fin temperature thermistor(RT64)
Resistance(k")
Resistance(k")
Resistance(k")
Outdoor electronic control P.C.board MUZ-A09RV ­MUZ-A12RV -
E1
E1
220-240V AC
BACK
15V DC
12V DC
5V DC
370V DC (C62)
LED monitor lamp
Power supply zero crossing signal 220­240V AC (CN726)
Connector for indoor/out­door commu­nication
LEV connector (CN724)
FRONT
Fin temperature thermistor(RT64) CN642
55
Defrost thermistor (RT62)
Discharge temperature thermistor(RT61)
CN641
Jumper wire for change in defrost setting(JP7). (Refer to page 38.)
MUZ-A09RV ­MUZ-A12RV -
E1
E1
Noise filter P.C board
BACK
220-240V AC
FRONT
Relay P.C board
220-240V AC
FRONT BACK
Outdoor fan motor 220-240V AC
R.V. coil 220-240V AC
Power supply zero crossing signal 220-240V AC (CN911)
56
DISASSEMBLY INSTRUCTIONS12
<"Terminal with lock mechanism" Detaching points>
In case of terminal with lock mechanism, detach the terminal as shown below. There are two types ( Refer to (1) and (2)) of the terminal with lock mechanism. The terminal with no lock mechanism can be removed by pulling it out. Check the shape of the terminal and work.
(1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector is a terminal
Sleeve
with lock mechanism.
1Slide the sleeve. 2Pull the terminal while
Locking lever
12-1. MSZ-A09RV - MSZ-A12RV -
pushing the locking lever.
E1E1
INDOOR UNIT
OPERATING PROCEDURE PHOTOS
1. Removing the front panel
(1) Remove the screw caps of the front panel.
Remove the screws.
(2) Pull the panel down to your side slightly and unhook the
catches at the top.
Photo 1
1Hold the sleeve, and pull out the terminal slowly.
Connector
Front panel
Screws
2. Removing the electronic control P.C. board and the display P.C. board.
(1) Remove the front panel. (Refer to 1) (2) Remove the screw of the electrical cover.
Remove the electrical cover.
(3) Remove the terminal cover.
Remove the screw of the terminal block. (4) Remove the cord clamp. (5) Remove the screw of the ground wire. (6) Disconnect all the connectors and all the lead wires on the
electronic control P.C. board.
(7) Remove the electronic control P.C. board and the display
P.C. board.
Photo 2
Ground
Fan motor connector
Terminal block cover
Room temperature thermistor connector
Indoor electronic control P.C.board
Vane motor connector
Cord clamp
Terminal block cover screw
57
OPERATING PROCEDURE PHOTOS
3. Removing the electrical box
(1) Remove the front panel. (Refer to 1) (2) Remove the electrical cover. (3) Disconnect the connector of the indoor coil thermistor. (4) Disconnect the motor connector (CN211) and the vane
motor connector (CN151) on the electronic control P.C. board.
(5) Remove the screw fixing the electrical box, remove the
electrical box.
4. Removing the vane motor
(1) Remove the front panel. (2) Remove the screws (both upper and lower) of the vane
motor, disconnect the connector.
(3) Remove the vane motor.
Photo 3
Electrical box screw
Photo 4
Vane motor screws
Drain hose
5. Removing the line flow fan and the indoor fan motor
(1) Remove the front panel. (Refer to 1) (2) Remove the electrical box. (3) Pull out the drain hose from the nozzle assembly, remove
the nozzle assembly. (4) Remove the screws fixing the fan motor. (5) Remove the screws fixing the left side of the heat
exchanger. (6) Lifting the left side of the heat exchanger. (7) Remove the hexagon socket set screws. (8) Remove the fan motor, and remove the line flow fan.
Vane motor
Photo 5
The screws fixing the left side of the heat exchanger
Indoor coil thermistor
Fan motor screws
58
12-2. MUZ-A09RV - MUZ-A12RV -
OUTDOOR UNIT
E1E1
OPERATING PROCEDURE
1. Removing the cabinet
(1) Remove the screws fixing the top panel and top panel. (2) Remove the screws fixing the service panel. (3) Pull down the service panel and remove it from the cabinet. (4) Remove the screws fixing the cabinet.
Photo 2
2. Removing the inverter assembly
(1) Remove the top panel, the service panel and the cabinet. (2) Disconnect the connectors (CN641),(CN642),(CN601) and
(CN724) on the electronic control P.C. board.
(3) Remove the connectors (CN771) and (CN913) on the relay
P.C. board. (4) Remove the lead wires from the reactor(L64) on the TB2. (5) Remove the screws fixing the relay panel.
3. Removing the electronic control P.C. board
(1) Remove the top panel, service panel and the cabinet.
(Refer to 1) (2) Remove the cover. (3) Remove all the connectors and the terminals on the control
P.C. board. (4) Remove the connector from the compressor. (5) Remove the screws fixing the PFC and IPM. (6) Remove the electronic control P.C. board from the heat
sink.
4. Removing the relay P.C. board
(1) Remove the top panel, the service panel and the cabinet.
(Refer to 1)
(2) Remove all the connectors and the terminals on relay P.C.
board.
(3) Remove the relay P.C. board.
Screws
Hook
Photo 1
Screws
Photo 3
Photo 4
PHOTOS
Screws
Screws
Cover screw
Screws
Connector
Electronic control P.C. board
5. Removing the noise filter P.C. board
(1) Remove the top panel, the service panel and the cabinet.
(Refer to 1)
(2) Remove the electronic control P.C. board and relay P.C.
board.
(3) Remove all the connectors and the terminals on noise filter
P.C. board. (4) Remove the ground wire screwed down on the relay panel. (5) Remove the noise filter P.C. board.
Relay P.C. board
Screws
Screws
Heat sink
Noise filter P.C. board
59
OPERATING PROCEDURE
6. Removing the outdoor fan motor
(1) Remove the top panel, the service panel and the cabinet.
(Refer to 1)
(2) Disconnect the connector remove the clamp of fan motor
lead wire.
(3) Remove the propeller fan nut and remove the propeller fan. (4) Remove screws fixing the fan motor.
7. Removing the compressor
(1) Remove the top panel, the service panel and the cabinet.
(Refer to 1) (2) Remove the soundproof felt. (3) Remove the terminal cover on the compressor. (4) Remove the electrical assembly. (Refer to 2) (5) Recover gas from the refrigerant circuit. (6) Disconnect the welded part of the discharge pipe. (7) Disconnect the welded part of the suction pipe. (8) Remove nuts fixing the compressor. (9) Remove the compressor.
NOTE
Before using a burner, reclaim gas from the pipes until the pressure gauge shows 0 kg/cm
Use the burner under the condition that gas can be recovered even when the inner pressure rises by heat.
2
(0MPa).
Photo 5
Propeller fan
PHOTOS
Set screws for outdoor fan motor
Propeller fan nut
Compressor nuts
Lead clamps
Welded sections
60
PARTS LIST13
E02 408 970 E02 411 234 E02 409 976 E02 409 000 E02 409 067 E02 408 142 E02 409 010 E02 410 100 E02 409 975
-
-
INSTALLATION PLATE BOX (WH) CORNER BOX LEFT (WH) FRONT PANEL (WH) SCREW CAP (WH) CATCH GRILLE (WH) AIR FILTER CORNER BOX RIGHT (WH) DEODORIZING FILTER AIR CLEANING FILTER
Symbol
in Wiring
Diagram
Q'ty/unit
2PCS/SET 3PCS/SET
See page 65. (MAC-1800DF) See page 65. (MAC-1300FT)
RemarksPart No.
NO.
Part Name
1 1 1 1 2 3 1 2 1 1 1
MSZ-A09RV-
E1
(WH)
1 2 3 4 5 6 7 8
9 10 11
(WH)
1 1 1 1 2 3 1 2 1 1 1
MSZ-A12RV-
E1
E02 448 620 E02 151 666 E02 151 667
INDOOR HEAT EXCHANGER UNION (GAS) UNION (LIQUID)
{9.52 {6.35
1 1 1
1 1 1
12 13 14
MSZ-A09RV - (WH) MSZ-A12RV - (WH)
E1
E1
13-1. INDOOR UNIT STRUCTURAL PARTS
1 2
3 4
5
SCREW CAP
6
CATCH
9
7
8
13-1. INDOOR UNIT STRUCTURAL PARTS
13-2. INDOOR UNIT HEAT EXCHANGER
12
13
14
11 10
13-2. INDOOR UNIT HEAT EXCHANGER
61
MSZ-A09RV - (WH)
22 23
E02 448 426 E02 141 083
REMOTE CONTROLLER REMOTE CONTROLLER HOLDER
1 1
1 1
E02 408 509 E02 001 504 E02 408 302 E02 408 702 E02 448 235 E02 409 040 E02 409 041 E02 127 382 E02 336 385 E02 408 034 E02 408 303 E02 448 303 E02 151 300 E02 151 505 E02 448 452 E02 449 452 E02 408 329 E02 408 308 E02 448 375 E02 448 307 E02 448 034 E02 408 381
1 2 3 4 5 6 7 8
9 10 11 12 13 14
15
16 17 18 19 20 21
BEARING MOUNT SLEEVE BEARING LINE FLOW FAN DRAIN HOSE NOZZLE (WH) VANE UPPER (WH) VANE LOWER (WH) FUSE VARISTOR VANE CRANK SET VANE MOTOR (HORIZONTAL) VANE MOTOR (VERTICAL) INDOOR FAN MOTOR FAN MOTOR RUBBER MOUNT ELECTRIC CONTROL P.C.BOARD ELECTRIC CONTROL P.C.BOARD GREEN SIGN P.C.BOARD ROOM TEMPERATURE THERMISTOR TERMINAL BLOCK INDOOR COIL THERMISTOR VANE MOTOR SUPPROT SET THERMAL FUSE
Symbol
in Wiring
Diagram
Q'ty/unit
3.15A
UP & DOWN UP & DOWN RIGHT & LEFT RC4V19 ­2PES/SET
3P
RIGHT & LEFT 93;
RemarksPart No.
NO.
Part Name
F11
NR11
MV1 MV2
MF
RT11
TB
RT12, 13
F12
1 1 1 1 1 1 1 1 1 1 1 1 1 2 1
1 1 1 1 1 1
MSZ-A09RV-
E1
(WH)
1 1 1 1 1 1 1 1 1 1 1 1 1 2
1 1 1 1 1 1 1
MSZ-A12RV-
E1
(WH)
AUTO RESTART I
ncluding RECEIVER P.C. BOARD AUTO RESTART Including RECEIVER P.C. BOARD
MSZ-A12RV - (WH)
E1
E1
13-3. INDOOR UNIT ELECTRICAL PARTS
12
19
14
13
11
1
2
SLEEVE BEARING
3
4
5 6
7
10
13-4. ACCESSORY AND
18
17
ROOM TEMPERATURE THERMISTOR
16
REMOTE CONTROLLER PARTS
22 23
9
8
FUSE
13-3. INDOOR UNIT ELECTRICAL PARTS
Part numbers that are circled are not shown in the illustration.
13-4. ACCESSORY AND REMOTE CONTROLLER PARTS
VARISTOR
15
62
M21 75K 297 T2W E56 515 T2W E57 630 T2W E56 521 T2W E45 232 M21 21J 501 T2W E93 290 T92 510 280 M21 69A 662 M21 69A 661 M21 40L 245 T2W E56 531 T2W E56 645 M21 68V 961 M21 20A 523 T2W E56 293 T2W E56 301 M21 K89 936 T2W E56 943 T2W E57 943
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16 17 18 19 20
TOP PANEL MOTOR SUPPORT OUTDOOR HEAT EXCHANGER GRILLE FRONT PANEL PROPELLER FAN BASE COMPRESSOR STOP VALVE (LIQUID) STOP VALVE (GAS) SERVICE PANEL BACK PANEL PIPE ASSEMBL Y 4-WAY VALVE CONDENSER NET SEPARATOR OUTDOOR FAN MOTOR CAPILLARY TUBE MUFFLER MUFFLER SPECIAL
Symbol
in Wiring
Diagram
Q'ty/unit
SNB092FJAH
{6.35 {9.52
EXP. VALVE, CAPILLARY
RA6V28-
2PC/SET{3.0{2.0300
RemarksPart No.
NO.
Part Name
MC
MF61
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1
MUZ-A09RV-
E1
MUZ-A12RV-
E1
13-5. OUTDOOR UNIT STRUCTURAL PARTS
MUZ-A09RV ­MUZ-A12RV -
1
2
3
E1
E1
17
16
15
14 13
12
11
4
Part numbers that are circled are not shown in the illustration.
When servicing , cut the tube to the proper length as shown in the REFRIGERANT SYSTEM DIAGRAM. See page 12.
5
7
6
63
8
9
10
M21 90A 308 T2W E56 331 T2W E56 424 T2W E45 376 T2W E56 389 T2W E56 309 T2W E56 441 T2W E56 451 T2W E57 451 T2W E56 376
1 2 3 4 5 6 7
8 9
FIN TEMPERATURE THERMISTOR REACTOR NOISE FILTER P.C BOARD TERMINAL BLOCK R.V. COIL THERMISTOR SET RELAY P.C BOARD ELECTRIC CONTROL P.C BOARD ELECTRIC CONTROL P.C BOARD TERMINAL BLOCK
Symbol
in Wiring
Diagram
Q'ty/unit
RemarksPart No.
NO.
Part Name
RT64
L64
TB1
21S4
RT61,62
TB2
1 1 1 1 1 1 1 1
1
1 1 1 1 1 1 1
1 1
MUZ-A09RV-
E1
MUZ-A12RV-
E1
DISCHARGE, DEFROST
T2W E71 704
10
DRAIN SOCKET ASSY
Symbol
in Wiring
Diagram
Q'ty/unit
RemarksPart No.
NO.
Part Name
11
MUZ-A09RV-
E1
MUZ-A12RV-
E1
DRAIN SOCKET 1ps DRAI N CAP 3pcs
13-6. OUTDOOR UNIT
ELECTRICAL PARTS
MUZ-A09RV ­MUZ-A12RV -
1
E1
E1
8
7
6
5
2
Part number that is circled is not shown in the illustration.
13-7. ACCESSORY
3
10
4
64
13-8. AIR CLEANING FILTER
AIR CLEANING FILTER removes fine dust of 0.01 micron from air by means of static electricity.
Normal life of AIR CLEANING FILTER is 4 months. However, when it becomes dirty, replace it as soon as possible.
Clogged AIR CLEANING FILTER may reduce the air conditioner capacity or cause frost on the air outlet.
DO NOT reuse AIR CLEANING FILTER even if it is washed.
DO NOT remove or attach AIR CLEANING FILTER during unit operation.
Model Part No.
MSZ-A09RV ­MSZ-A12RV -
E1
E1
MAC-1300FT
13-9. DEODORIZING FILTER
DEODORIZING FILTER removes ammonia and hydrogen sulfide emitted from tobacco, and odors of pets.
Clean DEODORIZING FILTER every two weeks. If the filter is particularly dirty, clean the filter more often.
For cleaning, soak the filter in warm water for a while, and then wash and rinse it. Dry the filter in the shade thoroughly.
When the filter color is still dark even after cleaning, replace the filter with a new one.
Replace the filter at least once a year.
Model Part No.
MSZ-A09RV ­MSZ-A12RV -
E1
E1
MAC-1800DF
DEODORIZING FILTER and AIR CLEANING FILTER can be attached on either side.
65
HEAD OFFICE: MITSUBISHI DENKI BLDG.,2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN
CC
Copyright 1999 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in May 2002. No.OB230 REVISED EDITION-A Distributed in Mar. 1999. MEE No. OB230 244 Made in Japan
New publication, effective May 2002 Specifications subject to change without notice.
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