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Page 1
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
Revision A:
● MUZ-A12YV- E1 and MUZ-A12YVH- E1
can be connected to MCFZ-A12WV- E1 .
● Some mistakes were corrected.
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
Please void OB328.
HFC
utilized
SERVICE MANUAL
No. OB328
REVISED EDITION-A
R410A
Wireless type
Models
MUZ-A09YV MUZ-A12YV MUZ-A09YVH MUZ-A12YVH E1
E1
E1
E1
CONTENTS
Indication of
model name
MUZ-A09YV - E1
MUZ-A12YV - E1
MUZ-A09YVH - E1
MUZ-A12YVH - E1
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················5
3. SPECIFICATION·················································5
4. NOISE CRITERIA CURVES ·······························7
5. OUTLINES AND DIMENSIONS ·························8
6. WIRING DIAGRAM ············································9
7. REFRIGERANT SYSTEM DIAGRAM ··············11
8. PERFORMANCE CURVES ······························12
9. ACTUATOR CONTROL····································21
10. SERVICE FUNCTIONS·····································22
11. TROUBLESHOOTING ······································22
12. DISASSEMBLY INSTRUCTIONS·····················34
13. PARTS LIST······················································38
NOTE:
This service manual describes technical data of the outdoor units.
•As for indoor units MSZ-A09YV- E1 and MSZ-A12YV- E1 , refer to the service manual OB327.
•As for indoor unit MCFZ-A12WV- E1 , refer to the service manual OB344.
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
Revision A:
•MUZ-A12YV- E1 and MUZ-A12YVH•Some mistakes were corrected.
1
E1
can be connected to MCFZ-A12WV-
E1
.
TECHNICAL CHANGES
INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT
• This room air conditioner adopts an HFC refrigerant (R410A) which never destroys the ozone layer.
• Pay particular attention to the following points, though the basic installation procedure is same as that for R22 air
conditioners.
1 As R410A has working pressure approximate 1.6 times as high as that of R22, some special tools and piping parts/
materials are required. Refer to the table below.
2 Take sufficient care not to allow water and other contaminations to enter the R410A refrigerant during storage and
installation, since it is more susceptible to contaminations than R22.
3 For refrigerant piping, use clean, pressure-proof parts/materials specifically designed for R410A. (Refer to 2. Refrigerant
piping.)
4 Composition change may occur in R410A since it is a mixed refrigerant. When charging, charge liquid refrigerant to prevent
composition change.
New refrigerant
Previous refrigerant
R410A
R22
Refrigerant
Composition (Ratio)
HFC-32: HFC-125 (50%:50%)
R22 (100%)
Refrigerant handling
Pseudo-azeotropic refrigerant
Single refrigerant
Not included
Included
Chlorine
A1/A1
A1
72.6
86.5
Boiling point (:)
-51.4
-40.8
Steam pressure [25:](Mpa)
1.557
0.94
Refrigerant
Safety group (ASHRAE)
Molecular weight
64
44.4
Non combustible
Non combustible
ODP w1
0
0.055
GWP w2
1730
1700
From liquid phase in cylinder
Gas phase
Possible
Possible
Kind
Incompatible oil
Compatible oil
Color
Non
Light yellow
Non
Non
Saturated steam density [25:](Kg/K)
Combustibility
Refrigerant charge method
oil
Refrigerating
Additional charge on leakage
Smell
w1 :Ozone Destruction Parameter : based on CFC-11
w2 :Global Warmth Parameter
: based on CO2
Compressor
New Specification
Current Specification
The incompatible refrigerating oil easily separates from
Since refrigerant and refrigerating oil are compatible each,
refrigerant and is in the upper layer inside the suction muffler. refrigerating oil backs to the compressor through the lower
Raising position of the oil back hole enables to back the
position oil back hole.
refrigerating oil of the upper layer to flow back to the
compressor.
Suction muffler
Suction muffler
Compressor
Oil back hole
Compressor
Refrigerating oil
Oil back hole
Refrigerant
Refrigerating oil /Refrigerant
NOTE : The unit of pressure has been changed to MPa on the international system of units(SI unit system).
f [Gauge])
The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/f
2
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
Conversion chart of refrigerant temperature and pressure
(MPa [Gauge])
4.0
Saturated liquid pressure
3.5
R410A
3.0
R22
2.5
2.0
NOTE : The unit of pressure has been changed to MPa on the
international system of units(SI unit system).
1.5
1.0
f [Gauge])
The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/f
0.5
0.0
-0.5
-30 -20 -10
0
10
20
40
30
50
60
(:)
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 stop valve in outdoor unit has been changed to prevent any other refrigerant being
charged into the unit. Cap size has been changed from 7/16 UNF with 20 threads to 1/2 UNF with 20 threads.
R410A tools
Description
Can R22 tools be used?
Gauge manifold
No
Charge hose
No
Gas leak detector
Torque wrench
R410A has high pressures beyond the measurement range of existing
gauges. Port diameters have been changed to prevent any other refrigerant
from being charged into the unit.
No
Hose material and cap size have been changed to improve the pressure
resistance.
Dedicated for HFC refrigerant.
Yes
6.35 mm and 9.52 mm
No
12.7 mm
Flare tool
Yes
Clamp bar hole has been enlarged to reinforce the spring strength in the tool.
Flare gauge
Vacuum pump
adapter
Electronic scale for
refrigerant charging
New
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
New
New
No : Not Substitutable for R410A
Yes : Substitutable for R410A
2.Refrigerant piping
1 Specifications
Use the refrigerant pipes that meet the following specifications.
Pipe
For liquid
For gas
Outside diameter
mm
Wall
thickness
6.35
0.8 mm
9.52
0.8 mm
12.7
0.8 mm
Insulation material
Heat resisting foam plastic
Specific gravity 0.045 Thickness 8 mm
• Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm. Never use any pipe with a thickness less
than 0.8mm, as the pressure resistance is insufficient.
3
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
2 Flaring work and flare nut
Flaring work for R410A pipe differs from that for R22 pipe.
For details of flaring work, refer to Installation manual “FLARING WORK”.
Dimension of flare nut
Pipe diameter
mm
R410A
R22
6.35
17
17
9.52
22
22
12.7
26
24
3.Refrigerant oil
Apply the special refrigeration oil (accessories: packed with indoor unit) to the flare and the union seat surfaces.
4.Air purge
• Do not discharge the refrigerant into the atmosphere.
Take care not to discharge refrigerant into the atmosphere during installation, reinstallation, or repairs to the refrigerant
circuit.
• 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. In this case, ability of the refrigerating cycle decreases or normal operation can be impossible. However,
charging the liquid refrigerant all at once may cause the compressor to be locked. Thus, charge the refrigerant slowly.
Union
Stop valve
Indoor unit
Liquid pipe
Gas pipe
Refrigerant gas
cylinder
operating valve
Outdoor unit
Service port
Gauge manifold
valve (for R410A)
Charge hose (for R410A)
Refrigerant gas cylinder
for R410A with siphon
Refrigerant (liquid)
Electronic scale for refrigerant charging
4
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
2
PART NAMES AND FUNCTIONS
MUZ-A09YV - E1
MUZ-A09YVH - E1
MUZ-A12YV - E1
MUZ-A12YVH - E1
ACCESSORIES
OUTDOOR UNIT
OUTDOOR UNIT
Air inlet
(back and side)
Piping
MUZ-A09YV MUZ-A12YV -
Drain hose
1
Drain socket
E1
E1
1
Air outlet
Drain outlet
3
SPECIFICATION
Outdoor model
Function
Electrical
Capacity
data
Power supply
Special
remarks
Fan
motor
Compressor
Capacity Rated frequency(Min.~Max.) kW
r/h
Dehumidification
K /h
Air flow
A
Starting current ✽1
A
Compressor motor current ✽1
A
Fan motor current
Coefficient of performance(C.O.P) ✽1
Model
W
Output
Winding
"
resistance(at 20:)
Model
Winding
"
resistance(at 20:)
mm
Dimensions WOHOD
kg
Weight
dB(A)
Sound level
rpm
Fan speed
Fan speed regulator
Refrigerant filling
kg
capacity(R410A)
cc
Refrigerating oil (Model)
k"
Thermistor RT61(at 0:)
k"
Thermistor RT62(at 100:)
Thermistor RT64(at 50:) k"
Thermistor RT65(at 25:) k"
MUZ-A12YV - E1
MUZ-A12YV - E1
MUZ-A09YV - E1
MUZ-A12YVH - E1
MUZ-A12YVH - E1
MUZ-A09YVH - E1
Indoor model
Indoor model
Indoor model
MSZ-A09YV - E1
MSZ-A12YV - E1
MCFZ-A12WV - E1
Cooling
Heating
Heating
Heating
Cooling
Cooling
Single phase
Single phase
Single phase
230V,50Hz
230V,50Hz
230V,50Hz
2.5 (0.9-3.2) 3.2 (0.9-5.0) 3.5 (1.0-4.1) 4.0 (0.9-6.0) 3.5 (1.0-4.1) 3.9 (0.9-5.9)
—
—
2.0
2.0
1.4
—
1900
1900
1900
3.90
5.00
5.00
2.89
4.57
4.46
3.49
0.24
0.24
0.24
3.70
3.61
3.21
3.21
3.73
3.81
KNB073FBVH
KNB092FAAH
KNB092FAAH
550
650
650
U-V 1.53
U-W 1.53
U-V 0.49
U-W 0.49
U-V 0.49
U-W 0.49
V-W 1.53
V-W 0.49
V-W 0.49
RA6V21-AA
RA6V21-AA
RA6V21-AA
WHT-BLK 347
WHT-BLK 347
WHT-BLK 347
BLK-RED 281
BLK-RED 281
BLK-RED 281
800o550o285
800o550o285
800o550o285
33
34
34
48
48
47
47
46
825
825
825
1
1
1
0.80
0.90
0.90
320 (NEO22)
32.6
13.4
17
10
320 (NEO22)
32.6
13.4
17
10
320 (NEO22)
32.6
13.4
17
10
NOTE : Test conditions are based on ISO 5151
Cooling : Indoor DB 27: WB 19:
Outdoor DB 35: WB(24:)
Heating : Indoor DB 20: WB 15:
Outdoor DB 7: WB 6:
Refrigerant piping length (one way): 5m
✽1 Measured under rated operating frequency
5
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
Specifications and rating conditions of main electric parts
OUTDOOR UNIT
Model
Item
MUZ-A09YV -
E1
MUZ-A09YVH -
MUZ-A12YV -
E1
(CT)
ETQ19Z53AY
Current transformer (CT761, CT781)
ETQ19Z71AY
Smoothing capacitor (C62A, C62B, C61B)
680+ 420V
(C65)
1.8+ 440V
Current transformer
Outdoor fan capacitor
Diode module
(DB61, DB65)
Fuse
(F61)
Fuse
(F71, F801)
(H)
Defrost heater
250V 20A
—
230V 130W
—
PS21244A
Expansion valve coil
(LEV)
CAD-MD12ME 12VDC
Reactor
(L61)
10A 23.0mH
Current-detecting resistor
(R61)
Current-detecting resistor
(R831)
25m" 5W
Current-limiting resistor (R64A, R64B)
5.1" 10W
45m" 5W
G3MB
(TB)
3P
Relay
(X63)
G5N-1a/G5NB-1a
Relay
(X64)
R.V. coil
(X66)
G4A-1A-PS
—
G5N-1a/G5NB-1a
—
Open 45:
(26H)
—
G5N-1a/G5NB-1a
—
Open 45:
LD30013
(21S4)
Heater protector
230V 130W
50m" 5W (2 elements)
(SR61)
Relay
E1
250V 3.15A
(IPM)
Terminal block
MUZ-A12YVH -
D25XB60
Power transistor module
Solid state relay
E1
Outdoor fan motor thermal fuse
Open 152:
6
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
4
NOISE CRITERIA CURVES
MUZ-A09YV - E1
MUZ-A09YVH - E1
SPEED
MUZ-A12YV - E1
MUZ-A12YVH - E1
FUNCTION
SPL(dB(A))
COOLING
46
HEATING
46
LINE
FAN SPEED FUNCTION
High
SPL(dB(A))
COOLING
47
HEATING
48
LINE
Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature (24:)
Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:
90
Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature (24:)
Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:
90
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
High
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63
125
NC-20
250
500
1000
2000
4000
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
8000
BAND CENTER FREQUENCIES, Hz
63
125
NC-20
250
500
1000
2000
4000
BAND CENTER FREQUENCIES, Hz
OUTDOORUNIT
1m
MICROPHONE
7
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
5
OUTLINES AND DIMENSIONS
MUZ-A09YV - E1
MUZ-A09YVH - E1
MUZ-A12YV - E1
MUZ-A12YVH - E1
Unit: mm
OUTDOOR UNIT
REQUIRED SPACE
Basically open 100mm or more
without any obstruction in front
and on both sides of the unit.
ore
Drain hole [42 (MUZ-A09/A12YV)
Drain hole [33 (MUZ-A09/A12YVH)
mm
or m
Bolt pitch for
installation
304~325
ore
44
Air in
40
2 holes 10o21
e
mm
200
or
or m
Open two sides of left,
right, or rear side.
17.5
Service panel
Air out
23
22.3
Liquid refrigerant pipe joint
Refrigerant pipe (flared) [6.35
Handle
3569
Gas refrigerant pipe joint
Refrigerant pipe (flared) [9.52
99.5
10
164.5
280
150
43-
285
or m
1
100
550
344.5
400
Air in
m
00m
170.5
Service port
302.5
500 Bolt pitch for installation
800
8
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350
mm
or m
ore
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9
1
2
NAME
DB65
+
RT61RT62
RT65
CN641
1 2 3 4
NAME
SR61
FIN TEMPERATURE THERMISTOR 21S4
R.V. COIL
DISCHARGE TEMPERATURE THERMISTOR X63,X64 RELAY
POWER TRANSISTOR MODULE RT64
TRANSFORMER
C
N
7
2
4
6
LEV
CN61
RED
MC
WHT
W
BLK
V
U
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
RT64
1 2
CN642
SWITCHING POWER TRANSISTOR
INTELLIGENT POWER DEVICE RT62
T801
TR821
TERMINAL BLOCK
SOLID STATE RELAY
IPM
DEFROST THERMISTOR
VARISTOR
OUTDOOR FAN MOTOR (INNER FUSE) TB
COMPRESSOR
IC801
RT61
NR61
FUSE (20A)
F61
F71,F801 FUSE (3.15A)
MF
MC
SURGE ABSORBER
DSA
DB61,DB65 DIODE MODULE
W
V
LD-U BLK 1
CT761 LD-V WHT
2
RED 3
LD-W
IPM CT781
N
P
U
INVERTER P.C. BOARD
1 2
CN643
TR821
IC801
R61
T801
F801
AMBIENT TEMPERATURE THERMISTOR
3 2 1
CN601
R831
+
C62A C62B C61B
+
R64A,R64B CURRENT-LIMITING RESISTOR
RT65
SYMBOL
C
N
7
2
5
CN800
1
2
3
LD69
LD70
DB61
R61,R831 CURRENT-DETECTING RESISTOR
7
MF
21S4
BLU
BLU
BLK
REACTOR
EXPANSION VALVE COIL
C
N
7
2
6
CN771
1
2
3
CN721
X63
4
L61
OUTDOOR FAN CAPACITOR L62,L63 CMC COIL
L61
C65
3
SR61 C65
F71
CT
X64
R64A R64B
TAB63 BLK
POWER P.C. BOARD
L63
SYMBOL
NR61
DSA
C62A,C62B,C61B SMOOTHING CAPACITOR
LDE
TAB62
LEV
NAME
GRN
BLU
CT,CT761,CT781 CURRENT TRANSFORMER
SYMBOL
RED
3
GRN/YLW
BLU
N
L62
MUZ-A09YV - E1
MUZ-A12YV - E1
TO
INDOOR
UNIT
12V
CONNECTING
F61 WHT TAB61
OUTDOOR UNIT
230V~ 2 TB WHT
6
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BLK
OB328 A--1qxp
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
WIRING DIAGRAM
MODELS WIRING DIAGRAM
26H
H
BLU
12V
www.ilmalämpöpumput.com
10
BLK
YLW
RED
SYMBOL
REACTOR
EXPANSION VALVE COIL
C
N
7
2
5
+
IC801
R61
T801
F801
1 2 3 4
RT61RT62
1 2
RT65
NAME
RT64
1 2
CN642
TB
TRANSFORMER
SWITCHING POWER TRANSISTOR
FIN TEMPERATURE THERMISTOR 26H
AMBIENT TEMPERATURE THERMISTOR
INTELLIGENT POWER DEVICE RT64
POWER TRANSISTOR MODULE RT65
IC801
IPM
HEATER PROTECTOR
R.V. COIL
X63,X64,X66 RELAY
T801
TERMINAL BLOCK
SOLID STATE RELAY
R64A,R64B CURRENT-LIMITING RESISTOR
SR61
W
V
6
LEV
MC
WHT
W
RED
BLK
V
U
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
C
N
7
2
4
CN61
LD-U BLK 1
CT761 LD-V WHT
2
RED 3
LD-W
IPM CT781
N
P
U
INVERTER P.C. BOARD
CN641
TR821
CN643
R831
+
C62A C62B C61B
+
R61,R831 CURRENT-DETECTING RESISTOR
3 2 1
CN601
SYMBOL
DISCHARGE TEMPERATURE THERMISTOR 21S4
DEFROST THERMISTOR
VARISTOR
DB65
DB61
CN800
1
2
3
LD69
LD70
OUTDOOR FAN MOTOR (INNER FUSE) TR821
COMPRESSOR
7
BLK
DEFROST HEATER
RT62
NAME
C
N
7
2
6
MF
21S4
BLU
BLU
L61
H
RT61
NR61
FUSE (20A)
F61
F71,F801 FUSE (3.15A)
MF
SURGE ABSORBER
DSA
MC
1
2
3
CN721
1
2
4
CN771
POWER P.C. BOARD
X63
3
X64
R64A R64B
SR61 C65
OUTDOOR FAN CAPACITOR L62,L63 CMC COIL
DB61,DB65 DIODE MODULE
C65
X66
F71
NR61
L61
CN722
1
2
3
LDE
CT
DSA
LEV
NAME
1
2
1
2
GRN
TAB62
C62A,C62B,C61B SMOOTHING CAPACITOR
BLK
BLK
BLK BLK
BLK BLK
GRN/YLW
RED
BLU
TAB63 BLK
MODELS WIRING DIAGRAM
CT,CT761,CT781 CURRENT TRANSFORMER
3
N
L63
04.4.26 4:49 PM
SYMBOL
TO
INDOOR
UNIT
CONNECTING
L62
OUTDOOR UNIT
230V~ 2 TB WHT F61 WHT TAB61
MUZ-A09YVH - E1
MUZ-A12YVH - E1
BLK
OB328 A--1qxp
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OB328 A--1qxp
04.4.26 4:49 PM
Page 11
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
7
REFRIGERANT SYSTEM DIAGRAM
MUZ-A09YV - E1
MUZ-A09YVH - E1
MUZ-A12YV - E1
MUZ-A12YVH - E1
OUTDOOR UNIT
Unit:mm
4-way valve
Refrigerant pipe [9.52
(with heat insulator)
Muffler
Stop valve
(with service port)
Flared connection
Discharge
temperatuer
thermistor
RT62
Outdoor
heat
exchanger
Muffler
Compressor
Defrost
thermistor
RT61
Ambient
Temperature
Thermistor
RT65
Strainer
Expansion
valve
Flared connection
R.V. coil
heating ON
cooling OFF
Muffler
Refrigerant pipe
[6.35
(with heat insulator)
Capillary tube
[3.0✕[2.0✕200
Stop valve
(with strainer)
Refrigerant flow in cooling
Refrigerant flow in heating
MAX. REFRIGERANT PIPING LENGTH
Refrigerant piping
Model
Max. length : m
MUZ-A09YV MUZ-A09YVH - E1
MUZ-A12YV - E1
MUZ-A12YVH - E1
Piping size O.D : mm
A
Gas
Liquid
20
9.52
6.35
Length of connecting pipe : m
Indoor unit
Outdoor unit
E1
Gas 0.43
Liquid 0.5
MAX. HEIGHT DIFFERENCE
Indoor
unit
w Max. Height
difference 12m
Refrigerant Piping
Max. length
A
Outdoor unit
w Height difference should be within 12m regardless of which unit, indoor or outdoor position is high.
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ADDITIONAL REFRIGERANT CHARGE (R410A:g)
Refrigerant piping length (one way)
Model
Outdoor unit
precharged
5m
6m
7m
8m
9m
10m
11m
12m
13m
14m
15m
20m
MUZ-A09YV - E1
MUZ-A09YVH - E1
800
0
0
0
90
120
150
180
210
240
270
300
450
MUZ-A12YV - E1
MUZ-A12YVH - E1
900
0
0
0
90
120
150
180
210
240
270
300
450
Calculation : Xg=30g/mo(Refrigerant piping length(m) - 5)
8
PERFORMANCE CURVES
MUZ-A09YV - E1
MUZ-A09YVH - E1
MUZ-A12YV - E1
MUZ-A12YVH - E1
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 :
°C WB
(2) Indoor outlet air wet-bulb temperature :
°C WB
Cooling
(3) Outdoor intake air dry-bulb temperature :
°C DB
(4) Total input:
W
(5) Indoor intake air dry-bulb temperature :
°C DB
(6) Outdoor intake air wet-bulb temperature :
°C WB
Heating
(7) Total input :
W
Indoor air wet/dry-bulb temperature difference on the left side of the chart on next page shows the difference between the
indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service.
}
}
How to measure the indoor air wet-bulb / dry-bulb temperature difference
1.
2.
3.
4.
5.
6.
7.
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.
Attach at least 2 sets of wet and dry-bulb thermometers to the outdoor air intake.
Cover the thermometers to prevent direct rays of the sun.
Check that the air filter is cleaned.
Open windows and doors of room.
Press the EMERGENCY OPERATION switch once (twice) to start the EMERGENCY COOL (HEAT) MODE.
When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.
10 minutes later, measure temperature again and check that the temperature does not change.
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
INDOOR UNIT
OUTDOOR UNIT
MSZ type
MCFZ type
Air out
Wet and dry-bulb
thermometers
Air in
7.3
8.2
8.7
6.8
7.6
8.0
6.3
7.0
7.3
5.7
6.4
6.6
5.2
5.8
5.9
Wet and dry-bulb
thermometers
Indoo
r inta
MCFZ-A12WV - E1
MUZ-A12YV - E1
MUZ-A12YVH - E1
Rated frequency 69Hz
5.3
19.6
23.4
18.1
19.5
21.5
16.6
17.8
19.5
15.1
16.0
17.6
13.6
14.2
15.6
12.1
12.4
13.7
10.6
10.7
11.7
9.1
MCFZ-A12WV - E1
MUZ-A12YV - E1
MUZ-A12YVH - E1
Rated frequency 76Hz
25.4
21.3
MSZ-A12YV - E1
MUZ-A12YV - E1
MUZ-A12YVH - E1
Rated frequency 76Hz
ke air
Wetbu
peratu
re (:
)
Outdoor intake air Dry-bulb temperature (:)
e(
tur
ra
pe
lb
bu
ir
ea
ak
t
r in
yDr
et-bu
e air W
)
re (:
peratu
lb tem
lb tem
23.1
MSZ-A09YV - E1
MUZ-A09YV - E1
MUZ-A09YVH - E1
Rated frequency 75Hz
Indoor air Dry-bulb temperature
difference (degree)
5.3
MSZ-A12YV - E1
MUZ-A12YV - E1
MUZ-A12YVH - E1
Rated frequency 69Hz
4.7
MSZ-A09YV - E1
MUZ-A09YV - E1
MUZ-A09YVH - E1
Rated frequency 57Hz
Indoor air Wet-bulb temperature
difference (degree)
Wet and dry-bulb
thermometers
k
r inta
Indoo
Outdoor intake air Dry-bulb temperature (:)
:)
ture
pera
tem
ake
int
oor
(:)
u
ry-b
air D
m
lb te
Ind
oo
Ind
Outdoor intake air Wet-bulb temperature (:)
Outdoor intake air Wet-bulb temperature (:)
NOTE:The above curves are for the heating operation without any frost.
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
MUZ-A09YV - E1
MUZ-A09YVH - E1
MUZ-A09YV - E1
MUZ-A09YVH - E1
Correction of Cooling total input
1.5
1.5
1.0
1.0
0.5
Correction of Heating total input
2.0
Correction of Heating capacity
2.0
Input correction factors
Input correction factors
Capacity correction factors
0.5
MUZ-A09YV - E1
MUZ-A09YVH - E1
Capacity correction factors
Correction of Cooling capacity
1.5
1.0
MUZ-A09YV - E1
MUZ-A09YVH - E1
0.5
1.5
1.0
0.5
0.0
0.0
0.0
0.0
0
50
100
150(Hz)
0
50
100
150(Hz) 0
50
100
150(Hz)
50
100
150(Hz) 0
The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor
)
(
Correction of Cooling capacity
)
(
Correction of Cooling total input
1.0
0.5
)
(
0.5
MUZ-A12YV - E1
MUZ-A12YVH - E1
Indoor unit :
MSZ-A12YV - E1
)
Correction of Heating total input
2.0
Capacity correction factors
1.0
MUZ-A12YV - E1
MUZ-A12YVH - E1
Indoor unit :
MSZ-A12YV - E1
Correction of Heating capacity
1.5
Input correction factors
Capacity correction factors
1.5
MUZ-A12YV - E1
MUZ-A12YVH - E1
Indoor unit :
MSZ-A12YV - E1
2.0
Input correction factors
(
MUZ-A12YV - E1
MUZ-A12YVH - E1
Indoor unit :
MSZ-A12YV - E1
1.5
1.0
0.5
1.5
1.0
0.5
0.0
0.0
0.0
0.0
0
50
100
150(Hz)
0
50
100
150(Hz) 0
0
50
100
150(Hz)
50
100
150(Hz)
The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor
Correction of Cooling capacity
1.0
0.5
Correction of Cooling total input
1.0
0.5
)
(
2.0
1.5
1.0
0.5
MUZ-A12YV - E1
MUZ-A12YVH - E1
Indoor unit :
MCFZ-A12WV - E1
)
Correction of Heating total input
Correction of Heating capacity
1.5
Input correction factors
Capacity correction factors
1.5
) (
MUZ-A12YV - E1
MUZ-A12YVH - E1
Indoor unit :
MCFZ-A12WV - E1
2.0
Input correction factors
) (
MUZ-A12YV - E1
MUZ-A12YVH - E1
Indoor unit :
MCFZ-A12WV - E1
Capacity correction factors
(
MUZ-A12YV - E1
MUZ-A12YVH - E1
Indoor unit :
MCFZ-A12WV - E1
1.5
1.0
0.5
0.0
0.0
0.0
0.0
0
50
100
150(Hz)
0
50
100
150(Hz) 0
0
50
100
150(Hz)
50
100
150(Hz)
The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor
OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
<How to operate fixed-frequency operation (Test run operation)>
1. Press the EMERGENCY OPERATION switch to COOL or HEAT mode (COOL : Press once, HEAT : Press twice).
2. Test run operation starts and continue to operate for 30 minutes.
3. Compressor operates at rated frequency in COOL mode or 58Hz in HEAT mode.
4. Indoor fan operates at High speed.
5. After 30 minutes, test run operation finishes and EMERGENCY OPERATION starts (Operation frequency of compressor
varies).
6. To cancel test run operation (EMERGENCY OPERATION), press the EMERGENCY OPERATION switch or any button on
remote controller.
NOTE : The unit of pressure has been changed to MPa on the international system of units (SI unit system).
f [Gauge])
The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/f
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OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
COOL operation
Dry-bulb temperature
Relative humidity(%)
20
50
25
60
30
70
1 Both indoor and outdoor unit are under the
same temperature/humidity condition.
2 Air flow : High speed
3 Operational frequency : 57Hz(MUZ-A09YV, MUZ-A09YVH)
69Hz(MUZ-A12YV, MUZ-A12YVH)
(
1.2
10
1.0
8
0.8
6
0.6
4
2
1.2
10
1.0
8
0.8
6
0.6
0.4
4
0.4
0.2
15
2
0.2
15
1.2
10
1.0
8
0.8
6
0.6
0.4
4
0.2
15
2
57Hz
25
30 32 35(˚C)
18 20
50
60
70
(%)
Ambient temperature(˚C) Ambient humidity(%)
(
4
MUZ-A12YV - E1
MUZ-A12YVH - E1
Indoor unit :
MSZ-A12YV - E1
(
)
Outdoor unit current(A)
57Hz
3
2.5
2
15
69Hz
5
4
3
MUZ-A12YV - E1
MUZ-A12YVH - E1
Indoor unit :
MCFZ-A12WV - E1
)
69Hz
5
4
3
2
15
2
15
25
30 32 35(˚C)
18 20
50
60
70
(%)
Ambient temperature(˚C) Ambient humidity(%)
69Hz
6
6
3.5
)
25
30 32 35(˚C)
18 20
50
60
70
(%)
Ambient temperature(˚C) Ambient humidity(%)
25
30 32 35(˚C)
18 20
50
60
70
(%)
Ambient temperature(˚C) Ambient humidity(%)
MUZ-A09YV - E1
MUZ-A09YVH - E1
Outdoor unit current(A)
69Hz
12
12
MUZ-A12YV - E1
MUZ-A12YVH - E1
Indoor unit :
MCFZ-A12WV - E1
(kgf/F [Gauge]) (MPa [Gauge])
14 1.4
Outdoor unit current(A)
12
(
)
(kgf/F [Gauge]) (MPa [Gauge])
14 1.4
Outdoor low pressure
Outdoor low pressure
(kgf/F [Gauge]) (MPa [Gauge])
14 1.4
MUZ-A12YV - E1
MUZ-A12YVH - E1
Indoor unit :
MSZ-A12YV - E1
Outdoor low pressure
MUZ-A09YV - E1
MUZ-A09YVH - E1
30 32 35(˚C)
25
18 20
70
(%)
50
60
Ambient temperature(˚C) Ambient humidity(%)
30 32 35(˚C)
25
18 20
70
(%)
50
60
Ambient temperature(˚C) Ambient humidity(%)
HEAT operation
Condition indoor: Dry bulb temperature 20.0°C
Wet bulb temperature 14.5°C
Condition outdoor: Dry bulb temperature 2,7,15,20.0°C
Wet bulb temperature 1,6,12,14.5°C
MUZ-A09YV - E1
MUZ-A09YVH - E1
(
2.0
1.5
1.0
0.5
2
5
10
15
20
Ambient temperature(˚C)
25(:)
3.5
3.0
2.5
2.0
1.5
1.0
MUZ-A12YV - E1
MUZ-A12YVH - E1
Indoor unit :
MCFZ-A12WV - E1
4.0
58Hz
2
5
10
15
20
Ambient temperature(˚C)
15
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25(:)
Outdoor unit current (A)
2.5
0.0
(
)
4.0
58Hz
Outdoor unit current (A)
Outdoor unit current (A)
3.0
MUZ-A12YV - E1
MUZ-A12YVH - E1
Indoor unit :
MSZ-A12YV - E1
)
58Hz
3.5
3.0
2.5
2.0
1.5
1.0
2
5
10
15
20
Ambient temperature(˚C)
25(:)
OB328 A--1qxp
04.4.26 4:49 PM
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
PERFORMANCE DATA COOL operation Rated frequency 57Hz
MSZ-A09YV - E1
CAPACITY:2.5(kW)
: MUZ-A09YV - E1 MUZ-A09YVH - E1
SHF:0.79
INPUT:670(W)
OUTDOOR
INDOOR INDOOR
DB(:) WB(:)
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
NOTE
21
Q SHC SHF INPUT
18
2.94 1.79 0.61 536
20
3.06 1.50 0.49 563
18
2.94 1.91 0.65 536
20
3.06 1.62 0.53 563
22
3.19 1.31 0.41 583
18
2.94 2.03 0.69 536
20
3.06 1.75 0.57 563
22
3.19 1.43 0.45 583
18
2.94 2.14 0.73 536
20
3.06 1.87 0.61 563
22
3.19 1.56 0.49 583
24
3.35 1.24 0.37 610
18
2.94 2.26 0.77 536
3.06 1.99 0.65 563
20
3.19 1.69 0.53 583
22
3.35 1.37 0.41 610
24
2.94 2.38 0.81 536
18
3.06 2.11 0.69 563
20
3.19 1.82 0.57 583
22
3.35 1.51 0.45 610
24
3.45 1.14 0.33 643
26
2.94 2.50 0.85 536
18
3.06 2.24 0.73 563
20
3.19 1.94 0.61 583
22
3.35 1.64 0.49 610
24
3.45 1.28 0.37 643
26
2.94 2.61 0.89 536
18
3.06 2.36 0.77 563
20
3.19 2.07 0.65 583
22
3.35 1.78 0.53 610
24
3.45 1.41 0.41 643
26
2.94 2.73 0.93 536
18
3.06 2.48 0.81 563
20
3.19 2.20 0.69 583
22
3.35 1.91 0.57 610
24
3.45 1.55 0.45 643
26
2.94 2.85 0.97 536
18
3.06 2.60 0.85 563
20
3.19 2.33 0.73 583
22
3.35 2.04 0.61 610
24
3.45 1.69 0.49 643
26
2.94 2.97 1.01 536
18
3.06 2.73 0.89 563
20
3.19 2.45 0.77 583
22
3.35 2.18 0.65 610
24
3.45 1.83 0.53 643
26
2.94 3.08 1.05 536
18
3.06 2.85 0.93 563
20
3.19 2.58 0.81 583
22
3.35 2.31 0.69 610
24
3.45 1.97 0.57 643
26
Q : Total capacity (kW)
SHC : Sensible heat capacity (kW)
25
Q SHC SHF INPUT Q
2.81 1.72 0.61 563 2.70
2.94 1.44 0.49 596 2.85
2.81 1.83 0.65 563 2.70
2.94 1.56 0.53 596 2.85
3.08 1.26 0.41 620 3.00
2.81 1.94 0.69 563 2.70
2.94 1.67 0.57 596 2.85
3.08 1.38 0.45 620 3.00
2.81 2.05 0.73 563 2.70
2.94 1.79 0.61 596 2.85
3.08 1.51 0.49 620 3.00
3.23 1.19 0.37 643 3.15
2.81 2.17 0.77 563 2.70
2.94 1.91 0.65 596 2.85
3.08 1.63 0.53 620 3.00
3.23 1.32 0.41 643 3.15
2.81 2.28 0.81 563 2.70
2.94 2.03 0.69 596 2.85
3.08 1.75 0.57 620 3.00
3.23 1.45 0.45 643 3.15
3.35 1.11 0.33 677 3.30
2.81 2.39 0.85 563 2.70
2.94 2.14 0.73 596 2.85
3.08 1.88 0.61 620 3.00
3.23 1.58 0.49 643 3.15
3.35 1.24 0.37 677 3.30
2.81 2.50 0.89 563 2.70
2.94 2.26 0.77 596 2.85
3.08 2.00 0.65 620 3.00
3.23 1.71 0.53 643 3.15
3.35 1.37 0.41 677 3.30
2.81 2.62 0.93 563 2.70
2.94 2.38 0.81 596 2.85
3.08 2.12 0.69 620 3.00
3.23 1.84 0.57 643 3.15
3.35 1.51 0.45 677 3.30
2.81 2.73 0.97 563 2.70
2.94 2.50 0.85 596 2.85
3.08 2.24 0.73 620 3.00
3.23 1.97 0.61 643 3.15
3.35 1.64 0.49 677 3.30
2.81 2.84 1.01 563 2.70
2.94 2.61 0.89 596 2.85
3.08 2.37 0.77 620 3.00
3.23 2.10 0.65 643 3.15
3.35 1.78 0.53 677 3.30
2.81 2.95 1.05 563 2.70
2.94 2.73 0.93 596 2.85
3.08 2.49 0.81 620 3.00
3.23 2.23 0.69 643 3.15
3.35 1.91 0.57 677 3.30
SHF : Sensible heat factor
INPUT : Total power input (W)
16
DB(:)
27
SHC SHF INPUT Q SHC
1.65 0.61 590 2.60 1.59
1.40 0.49 610 2.75 1.35
1.76 0.65 590 2.60 1.69
1.51 0.53 610 2.75 1.46
1.23 0.41 637 2.88 1.18
1.86 0.69 590 2.60 1.79
1.62 0.57 610 2.75 1.57
1.35 0.45 637 2.88 1.29
1.97 0.73 590 2.60 1.90
1.74 0.61 610 2.75 1.68
1.47 0.49 637 2.88 1.41
1.17 0.37 663 3.05 1.13
2.08 0.77 590 2.60 2.00
1.85 0.65 610 2.75 1.79
1.59 0.53 637 2.88 1.52
1.29 0.41 663 3.05 1.25
2.19 0.81 590 2.60 2.11
1.97 0.69 610 2.75 1.90
1.71 0.57 637 2.88 1.64
1.42 0.45 663 3.05 1.37
1.09 0.33 697 3.20 1.06
2.30 0.85 590 2.60 2.21
2.08 0.73 610 2.75 2.01
1.83 0.61 637 2.88 1.75
1.54 0.49 663 3.05 1.49
1.22 0.37 697 3.20 1.18
2.40 0.89 590 2.60 2.31
2.19 0.77 610 2.75 2.12
1.95 0.65 637 2.88 1.87
1.67 0.53 663 3.05 1.62
1.35 0.41 697 3.20 1.31
2.51 0.93 590 2.60 2.42
2.31 0.81 610 2.75 2.23
2.07 0.69 637 2.88 1.98
1.80 0.57 663 3.05 1.74
1.49 0.45 697 3.20 1.44
2.62 0.97 590 2.60 2.52
2.42 0.85 610 2.75 2.34
2.19 0.73 637 2.88 2.10
1.92 0.61 663 3.05 1.86
1.62 0.49 697 3.20 1.57
2.73 1.01 590 2.60 2.63
2.54 0.89 610 2.75 2.45
2.31 0.77 637 2.88 2.21
2.05 0.65 663 3.05 1.98
1.75 0.53 697 3.20 1.70
2.84 1.05 590 2.60 2.73
2.65 0.93 610 2.75 2.56
2.43 0.81 637 2.88 2.33
2.17 0.69 663 3.05 2.10
1.88 0.57 697 3.20 1.82
DB : Dry-bulb temperature
WB : Wet-bulb temperature
www.ilmalämpöpumput.com
30
SHF INPUT
0.61 616
0.49 637
0.65 616
0.53 637
0.41 663
0.69 616
0.57 637
0.45 663
0.73 616
0.61 637
0.49 663
0.37 697
0.77 616
0.65 637
0.53 663
0.41 697
0.81 616
0.69 637
0.57 663
0.45 697
0.33 717
0.85 616
0.73 637
0.61 663
0.49 697
0.37 717
0.89 616
0.77 637
0.65 663
0.53 697
0.41 717
0.93 616
0.81 637
0.69 663
0.57 697
0.45 717
0.97 616
0.85 637
0.73 663
0.61 697
0.49 717
1.01 616
0.89 637
0.77 663
0.65 697
0.53 717
1.05 616
0.93 637
0.81 663
0.69 697
0.57 717
OB328 A--1qxp
04.4.26 4:49 PM
Page 17
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
PERFORMANCE DATA COOL operation Rated frequency 57Hz
MSZ-A09YV - E1
CAPACITY:2.5(kW)
INDOOR INDOOR
DB (:) WB (:)
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
NOTE
Q
: MUZ-A09YV - E1 MUZ-A09YVH - E1
SHF:0.79
INPUT:670(W)
35
SHC SHF INPUT
18
2.45 1.49 0.61
20
2.58 1.26 0.49
18
2.45 1.59 0.65
20
2.58 1.36 0.53
22
2.73 1.12 0.41
18
2.45 1.69 0.69
20
2.58 1.47 0.57
22
2.73 1.23 0.45
18
2.45 1.79 0.73
20
2.58 1.57 0.61
22
2.73 1.34 0.49
24
2.88 1.06 0.37
2.45 1.89 0.77
18
2.58 1.67 0.65
20
2.73 1.44 0.53
22
2.88 1.18 0.41
24
2.45 1.98 0.81
18
2.58 1.78 0.69
20
2.73 1.55 0.57
22
2.88 1.29 0.45
24
3.03 1.00 0.33
26
2.45 2.08 0.85
18
2.58 1.88 0.73
20
2.73 1.66 0.61
22
2.88 1.41 0.49
24
3.03 1.12 0.37
26
2.45 2.18 0.89
18
2.58 1.98 0.77
20
2.73 1.77 0.65
22
2.88 1.52 0.53
24
3.03 1.24 0.41
26
2.45 2.28 0.93
18
2.58 2.09 0.81
20
2.73 1.88 0.69
22
2.88 1.64 0.57
24
3.03 1.36 0.45
26
2.45 2.38 0.97
18
2.58 2.19 0.85
20
2.73 1.99 0.73
22
2.88 1.75 0.61
24
3.03 1.48 0.49
26
2.45 2.47 1.01
18
2.58 2.29 0.89
20
2.73 2.10 0.77
22
2.88 1.87 0.65
24
3.03 1.60 0.53
26
2.45 2.57 1.05
18
2.58 2.39 0.93
20
2.73 2.21 0.81
22
2.88 1.98 0.69
24
3.03 1.72 0.57
26
Q : Total capacity (kW)
SHC : Sensible heat capacity
657
683
657
683
710
657
683
710
657
683
710
737
657
683
710
737
657
683
710
737
764
657
683
710
737
764
657
683
710
737
764
657
683
710
737
764
657
683
710
737
764
657
683
710
737
764
657
683
710
737
764
(kW)
OUTDOOR DB(:)
40
Q SHC SHF INPUT
Q
2.25 1.37 0.61 697 2.08
2.40 1.18 0.49 717 2.23
2.25 1.46 0.65 697 2.08
2.40 1.27 0.53 717 2.23
2.55 1.05 0.41 750 2.38
2.25 1.55 0.69 697 2.08
2.40 1.37 0.57 717 2.23
2.55 1.15 0.45 750 2.38
2.25 1.64 0.73 697 2.08
2.40 1.46 0.61 717 2.23
2.55 1.25 0.49 750 2.38
2.70 1.00 0.37 771 2.55
2.25 1.73 0.77 697 2.08
2.40 1.56 0.65 717 2.23
2.55 1.35 0.53 750 2.38
2.70 1.11 0.41 771 2.55
2.25 1.82 0.81 697 2.08
2.40 1.66 0.69 717 2.23
2.55 1.45 0.57 750 2.38
2.70 1.22 0.45 771 2.55
2.85 0.94 0.33 797 2.68
2.25 1.91 0.85 697 2.08
2.40 1.75 0.73 717 2.23
2.55 1.56 0.61 750 2.38
2.70 1.32 0.49 771 2.55
2.85 1.05 0.37 797 2.68
2.25 2.00 0.89 697 2.08
2.40 1.85 0.77 717 2.23
2.55 1.66 0.65 750 2.38
2.70 1.43 0.53 771 2.55
2.85 1.17 0.41 797 2.68
2.25 2.09 0.93 697 2.08
2.40 1.94 0.81 717 2.23
2.55 1.76 0.69 750 2.38
2.70 1.54 0.57 771 2.55
2.85 1.28 0.45 797 2.68
2.25 2.18 0.97 697 2.08
2.40 2.04 0.85 717 2.23
2.55 1.86 0.73 750 2.38
2.70 1.65 0.61 771 2.55
2.85 1.40 0.49 797 2.68
2.25 2.27 1.01 697 2.08
2.40 2.14 0.89 717 2.23
2.55 1.96 0.77 750 2.38
2.70 1.76 0.65 771 2.55
2.85 1.51 0.53 797 2.68
2.25 2.36 1.05 697 2.08
2.40 2.23 0.93 717 2.23
2.55 2.07 0.81 750 2.38
2.70 1.86 0.69 771 2.55
2.85 1.62 0.57 797 2.68
SHF : Sensible heat factor
INPUT : Total power input (W)
17
www.ilmalämpöpumput.com
46
SHC SHF INPUT
1.27 0.61 724
1.09 0.49 757
1.35 0.65 724
1.18 0.53 757
0.97 0.41 777
1.43 0.69 724
1.27 0.57 757
1.07 0.45 777
1.51 0.73 724
1.36 0.61 757
1.16 0.49 777
0.94 0.37 804
1.60 0.77 724
1.45 0.65 757
1.26 0.53 777
1.05 0.41 804
1.68 0.81 724
1.54 0.69 757
1.35 0.57 777
1.15 0.45 804
0.88 0.33 831
1.76 0.85 724
1.62 0.73 757
1.45 0.61 777
1.25 0.49 804
0.99 0.37 831
1.85 0.89 724
1.71 0.77 757
1.54 0.65 777
1.35 0.53 804
1.10 0.41 831
1.93 0.93 724
1.80 0.81 757
1.64 0.69 777
1.45 0.57 804
1.20 0.45 831
2.01 0.97 724
1.89 0.85 757
1.73 0.73 777
1.56 0.61 804
1.31 0.49 831
2.10 1.01 724
1.98 0.89 757
1.83 0.77 777
1.66 0.65 804
1.42 0.53 831
2.18 1.05 724
2.07 0.93 757
1.92 0.81 777
1.76 0.69 804
1.52 0.57 831
DB : Dry-bulb temperature
WB : Wet-bulb temperature
OB328 A--1qxp
04.4.26 4:49 PM
Page 18
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
PERFORMANCE DATA COOL operation Rated frequency 69Hz
MSZ-A12YV - E1 MCFZ-A12WV - E1
CAPACITY:3.5(kW)
SHF:0.76
: MUZ-A12YV - E1 MUZ-A12YVH - E1
INPUT:1090(W)
OUTDOOR
INDOOR INDOOR
DB(:) WB(:)
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
NOTE
21
Q SHC SHF INPUT
18
4.11 2.39 0.58 872
20
4.29 1.97 0.46 916
18
4.11 2.55 0.62 872
20
4.29 2.14 0.50 916
22
4.46 1.70 0.38 948
18
4.11 2.71 0.66 872
20
4.29 2.32 0.54 916
22
4.46 1.87 0.42 948
18
4.11 2.88 0.70 872
20
4.29 2.49 0.58 916
22
4.46 2.05 0.46 948
24
4.69 1.59 0.34 992
18
4.11 3.04 0.74 872
20
4.29 2.66 0.62 916
22
4.46 2.23 0.50 948
24
4.69 1.78 0.38 992
18
4.11 3.21 0.78 872
20
4.29 2.83 0.66 916
22
4.46 2.41 0.54 948
24
4.69 1.97 0.42 992
26
4.83 1.45 0.30 1046
18
4.11 3.37 0.82 872
20
4.29 3.00 0.70 916
22
4.46 2.59 0.58 948
24
4.69 2.16 0.46 992
26
4.83 1.64 0.34 1046
18
4.11 3.54 0.86 872
20
4.29 3.17 0.74 916
22
4.46 2.77 0.62 948
24
4.69 2.35 0.50 992
26
4.83 1.84 0.38 1046
18
4.11 3.70 0.90 872
20
4.29 3.34 0.78 916
22
4.46 2.95 0.66 948
24
4.69 2.53 0.54 992
26
4.83 2.03 0.42 1046
18
4.11 3.87 0.94 872
20
4.29 3.52 0.82 916
22
4.46 3.12 0.70 948
24
4.69 2.72 0.58 992
26
4.83 2.22 0.46 1046
18
4.11 4.03 0.98 872
20
4.29 3.69 0.86 916
22
4.46 3.30 0.74 948
24
4.69 2.91 0.62 992
26
4.83 2.42 0.50 1046
18
4.11 4.19 1.02 872
20
4.29 3.86 0.90 916
22
4.46 3.48 0.78 948
24
4.69 3.10 0.66 992
26
4.83 2.61 0.54 1046
Q : Total capacity (kW)
SHC : Sensible heat capacity (kW)
25
Q SHC SHF INPUT Q
3.94 2.28 0.58 916 3.78
4.11 1.89 0.46 970 3.99
3.94 2.44 0.62 916 3.78
4.11 2.06 0.50 970 3.99
4.31 1.64 0.38 1008 4.20
3.94 2.60 0.66 916 3.78
4.11 2.22 0.54 970 3.99
4.31 1.81 0.42 1008 4.20
3.94 2.76 0.70 916 3.78
4.11 2.39 0.58 970 3.99
4.31 1.98 0.46 1008 4.20
4.52 1.54 0.34 1046 4.41
3.94 2.91 0.74 916 3.78
4.11 2.55 0.62 970 3.99
4.31 2.15 0.50 1008 4.20
4.52 1.72 0.38 1046 4.41
3.94 3.07 0.78 916 3.78
4.11 2.71 0.66 970 3.99
4.31 2.32 0.54 1008 4.20
4.52 1.90 0.42 1046 4.41
4.69 1.41 0.30 1101 4.62
3.94 3.23 0.82 916 3.78
4.11 2.88 0.70 970 3.99
4.31 2.50 0.58 1008 4.20
4.52 2.08 0.46 1046 4.41
4.69 1.59 0.34 1101 4.62
3.94 3.39 0.86 916 3.78
4.11 3.04 0.74 970 3.99
4.31 2.67 0.62 1008 4.20
4.52 2.26 0.50 1046 4.41
4.69 1.78 0.38 1101 4.62
3.94 3.54 0.90 916 3.78
4.11 3.21 0.78 970 3.99
4.31 2.84 0.66 1008 4.20
4.52 2.44 0.54 1046 4.41
4.69 1.97 0.42 1101 4.62
3.94 3.70 0.94 916 3.78
4.11 3.37 0.82 970 3.99
4.31 3.01 0.70 1008 4.20
4.52 2.62 0.58 1046 4.41
4.69 2.16 0.46 1101 4.62
3.94 3.86 0.98 916 3.78
4.11 3.54 0.86 970 3.99
4.31 3.19 0.74 1008 4.20
4.52 2.80 0.62 1046 4.41
4.69 2.35 0.50 1101 4.62
3.94 4.02 1.02 916 3.78
4.11 3.70 0.90 970 3.99
4.31 3.36 0.78 1008 4.20
4.52 2.98 0.66 1046 4.41
4.69 2.53 0.54 1101 4.62
SHF : Sensible heat factor
INPUT : Total power input (W)
18
DB(:)
27
SHC SHF INPUT Q SHC
2.19 0.58 959 3.64 2.11
1.84 0.46 992 3.85 1.77
2.34 0.62 959 3.64 2.26
2.00 0.50 992 3.85 1.93
1.60 0.38 1036 4.03 1.53
2.49 0.66 959 3.64 2.40
2.15 0.54 992 3.85 2.08
1.76 0.42 1036 4.03 1.69
2.65 0.70 959 3.64 2.55
2.31 0.58 992 3.85 2.23
1.93 0.46 1036 4.03 1.85
1.50 0.34 1079 4.27 1.45
2.80 0.74 959 3.64 2.69
2.47 0.62 992 3.85 2.39
2.10 0.50 1036 4.03 2.01
1.68 0.38 1079 4.27 1.62
2.95 0.78 959 3.64 2.84
2.63 0.66 992 3.85 2.54
2.27 0.54 1036 4.03 2.17
1.85 0.42 1079 4.27 1.79
1.39 0.30 1134 4.48 1.34
3.10 0.82 959 3.64 2.98
2.79 0.70 992 3.85 2.70
2.44 0.58 1036 4.03 2.33
2.03 0.46 1079 4.27 1.96
1.57 0.34 1134 4.48 1.52
3.25 0.86 959 3.64 3.13
2.95 0.74 992 3.85 2.85
2.60 0.62 1036 4.03 2.50
2.21 0.50 1079 4.27 2.14
1.76 0.38 1134 4.48 1.70
3.40 0.90 959 3.64 3.28
3.11 0.78 992 3.85 3.00
2.77 0.66 1036 4.03 2.66
2.38 0.54 1079 4.27 2.31
1.94 0.42 1134 4.48 1.88
3.55 0.94 959 3.64 3.42
3.27 0.82 992 3.85 3.16
2.94 0.70 1036 4.03 2.82
2.56 0.58 1079 4.27 2.48
2.13 0.46 1134 4.48 2.06
3.70 0.98 959 3.64 3.57
3.43 0.86 992 3.85 3.31
3.11 0.74 1036 4.03 2.98
2.73 0.62 1079 4.27 2.65
2.31 0.50 1134 4.48 2.24
3.86 1.02 959 3.64 3.71
3.59 0.90 992 3.85 3.47
3.28 0.78 1036 4.03 3.14
2.91 0.66 1079 4.27 2.82
2.49 0.54 1134 4.48 2.42
DB : Dry-bulb temperature
WB : Wet-bulb temperature
www.ilmalämpöpumput.com
30
SHF INPUT
0.58 1003
0.46 1036
0.62 1003
0.50 1036
0.38 1079
0.66 1003
0.54 1036
0.42 1079
0.70 1003
0.58 1036
0.46 1079
0.34 1134
0.74 1003
0.62 1036
0.50 1079
0.38 1134
0.78 1003
0.66 1036
0.54 1079
0.42 1134
0.30 1166
0.82 1003
0.70 1036
0.58 1079
0.46 1134
0.34 1166
0.86 1003
0.74 1036
0.62 1079
0.50 1134
0.38 1166
0.90 1003
0.78 1036
0.66 1079
0.54 1134
0.42 1166
0.94 1003
0.82 1036
0.70 1079
0.58 1134
0.46 1166
0.98 1003
0.86 1036
0.74 1079
0.62 1134
0.50 1166
1.02 1003
0.90 1036
0.78 1079
0.66 1134
0.54 1166
OB328 A--1qxp
04.4.26 4:49 PM
Page 19
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
PERFORMANCE DATA COOL operation Rated frequency 69Hz
MSZ-A12YV - E1 MCFZ-A12WV - E1
CAPACITY:3.5(kW)
INDOOR INDOOR
DB (:) WB (:)
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
NOTE
SHF:0.76
: MUZ-A12YV - E1 MUZ-A12YVH - E1
INPUT:1090(W)
OUTDOOR
35
Q SHC SHF INPUT
18
3.43 1.99 0.58 1068
20
3.61 1.66 0.46 1112
18
3.43 2.13 0.62 1068
20
3.61 1.80 0.50 1112
22
3.82 1.45 0.38 1155
18
3.43 2.26 0.66 1068
20
3.61 1.95 0.54 1112
22
3.82 1.60 0.42 1155
18
3.43 2.40 0.70 1068
20
3.61 2.09 0.58 1112
22
3.82 1.75 0.46 1155
24
4.03 1.37 0.34 1199
18
3.43 2.54 0.74 1068
3.61 2.24 0.62 1112
20
3.82 1.91 0.50 1155
22
4.03 1.53 0.38 1199
24
3.43 2.68 0.78 1068
18
3.61 2.38 0.66 1112
20
3.82 2.06 0.54 1155
22
4.03 1.69 0.42 1199
24
4.24 1.27 0.30 1243
26
3.43 2.81 0.82 1068
18
3.61 2.52 0.70 1112
20
3.82 2.21 0.58 1155
22
4.03 1.85 0.46 1199
24
4.24 1.44 0.34 1243
26
3.43 2.95 0.86 1068
18
3.61 2.67 0.74 1112
20
3.82 2.37 0.62 1155
22
4.03 2.01 0.50 1199
24
4.24 1.61 0.38 1243
26
3.43 3.09 0.90 1068
18
3.61 2.81 0.78 1112
20
3.82 2.52 0.66 1155
22
4.03 2.17 0.54 1199
24
4.24 1.78 0.42 1243
26
3.43 3.22 0.94 1068
18
3.61 2.96 0.82 1112
20
3.82 2.67 0.70 1155
22
4.03 2.33 0.58 1199
24
4.24 1.95 0.46 1243
26
3.43 3.36 0.98 1068
18
3.61 3.10 0.86 1112
20
3.82 2.82 0.74 1155
22
4.03 2.50 0.62 1199
24
4.24 2.12 0.50 1243
26
3.43 3.50 1.02 1068
18
3.61 3.24 0.90 1112
20
3.82 2.98 0.78 1155
22
4.03 2.66 0.66 1199
24
4.24 2.29 0.54 1243
26
Q : Total capacity (kW)
SHC : Sensible heat capacity (kW)
DB(:)
40
Q SHC SHF INPUT Q
3.15 1.83 0.58 1134 2.91
3.36 1.55 0.46 1166 3.12
3.15 1.95 0.62 1134 2.91
3.36 1.68 0.50 1166 3.12
3.57 1.36 0.38 1221 3.33
3.15 2.08 0.66 1134 2.91
3.36 1.81 0.54 1166 3.12
3.57 1.50 0.42 1221 3.33
3.15 2.21 0.70 1134 2.91
3.36 1.95 0.58 1166 3.12
3.57 1.64 0.46 1221 3.33
3.78 1.29 0.34 1254 3.57
3.15 2.33 0.74 1134 2.91
3.36 2.08 0.62 1166 3.12
3.57 1.79 0.50 1221 3.33
3.78 1.44 0.38 1254 3.57
3.15 2.46 0.78 1134 2.91
3.36 2.22 0.66 1166 3.12
3.57 1.93 0.54 1221 3.33
3.78 1.59 0.42 1254 3.57
3.99 1.20 0.30 1297 3.75
3.15 2.58 0.82 1134 2.91
3.36 2.35 0.70 1166 3.12
3.57 2.07 0.58 1221 3.33
3.78 1.74 0.46 1254 3.57
3.99 1.36 0.34 1297 3.75
3.15 2.71 0.86 1134 2.91
3.36 2.49 0.74 1166 3.12
3.57 2.21 0.62 1221 3.33
3.78 1.89 0.50 1254 3.57
3.99 1.52 0.38 1297 3.75
3.15 2.84 0.90 1134 2.91
3.36 2.62 0.78 1166 3.12
3.57 2.36 0.66 1221 3.33
3.78 2.04 0.54 1254 3.57
3.99 1.68 0.42 1297 3.75
3.15 2.96 0.94 1134 2.91
3.36 2.76 0.82 1166 3.12
3.57 2.50 0.70 1221 3.33
3.78 2.19 0.58 1254 3.57
3.99 1.84 0.46 1297 3.75
3.15 3.09 0.98 1134 2.91
3.36 2.89 0.86 1166 3.12
3.57 2.64 0.74 1221 3.33
3.78 2.34 0.62 1254 3.57
3.99 2.00 0.50 1297 3.75
3.15 3.21 1.02 1134 2.91
3.36 3.02 0.90 1166 3.12
3.57 2.78 0.78 1221 3.33
3.78 2.49 0.66 1254 3.57
3.99 2.15 0.54 1297 3.75
SHF : Sensible heat factor
INPUT : Total power input (W)
19
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46
SHC SHF INPUT
1.68 0.58 1177
1.43 0.46 1232
1.80 0.62 1177
1.56 0.50 1232
1.26 0.38 1264
1.92 0.66 1177
1.68 0.54 1232
1.40 0.42 1264
2.03 0.70 1177
1.81 0.58 1232
1.53 0.46 1264
1.21 0.34 1308
2.15 0.74 1177
1.93 0.62 1232
1.66 0.50 1264
1.36 0.38 1308
2.27 0.78 1177
2.06 0.66 1232
1.80 0.54 1264
1.50 0.42 1308
1.12 0.30 1352
2.38 0.82 1177
2.18 0.70 1232
1.93 0.58 1264
1.64 0.46 1308
1.27 0.34 1352
2.50 0.86 1177
2.31 0.74 1232
2.06 0.62 1264
1.79 0.50 1308
1.42 0.38 1352
2.61 0.90 1177
2.43 0.78 1232
2.19 0.66 1264
1.93 0.54 1308
1.57 0.42 1352
2.73 0.94 1177
2.55 0.82 1232
2.33 0.70 1264
2.07 0.58 1308
1.72 0.46 1352
2.85 0.98 1177
2.68 0.86 1232
2.46 0.74 1264
2.21 0.62 1308
1.87 0.50 1352
2.96 1.02 1177
2.80 0.90 1232
2.59 0.78 1264
2.36 0.66 1308
2.02 0.54 1352
DB : Dry-bulb temperature
WB : Wet-bulb temperature
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
PERFORMANCE DATA HEAT operation
MSZ-A09YV - E1
CAPACITY:3.2(kW)
INDOOR
DB(:)
15
21
26
: MUZ-A09YV - E1 MUZ-A09YVH - E1
Rated frequency 75Hz
INPUT:840(W)
OUTDOOR WB(:)
-10
-5
0
5
10
15
20
Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT
2.02 546 2.43 655 2.85 739 3.26 798 3.68 848 4.06 874 4.48 890
1.92 588 2.30 697 2.72 773 3.10 832 3.52 874 3.90 899 4.30 932
1.73 630 2.14 739 2.53 815 2.94 874 3.36 916 3.74 941 4.16 966
NOTE Q:Total capacity (kW) INPUT:Total power input (W) DB : Dry-bulb temperature WB : Wet-bulb temperature
MSZ-A12YV - E1
CAPACITY:4.0(kW)
INDOOR
DB(:)
15
21
26
: MUZ-A12YV - E1 MUZ-A12YVH - E1
Rated frequency 76Hz
INPUT:1080(W)
OUTDOOR WB(:)
-10
-5
0
5
10
15
20
Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT
2.52 702 3.04 842 3.56 950 4.08 1026 4.60 1091 5.08 1123 5.60 1145
2.40 756 2.88 896 3.40 994 3.88 1069 4.40 1123 4.88 1156 5.38 1199
2.16 810 2.68 950 3.16 1048 3.68 1123 4.20 1177 4.68 1210 5.20 1242
NOTE Q:Total capacity (kW) INPUT:Total power input (W) DB : Dry-bulb temperature WB : Wet-bulb temperature
MCFZ-A12WV - E1 : MUZ-A12YV - E1 MUZ-A12YVH - E1
CAPACITY:3.9(kW)
INDOOR
DB(:)
15
21
26
Rated frequency 76Hz
INPUT:1080(W)
OUTDOOR WB(:)
-10
-5
0
5
10
15
20
Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT
2.46 702 2.96 842 3.47 950 3.98 1026 4.49 1091 4.95 1123 5.46 1145
2.34 756 2.81 896 3.32 994 3.78 1069 4.29 1123 4.76 1156 5.25 1199
2.11 810 2.61 950 3.08 1048 3.59 1123 4.10 1177 4.56 1210 5.07 1242
NOTE Q:Total capacity (kW) INPUT:Total power input (W) DB : Dry-bulb temperature WB : Wet-bulb temperature
20
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
9
ACTUATOR CONTROL
MUZ-A09YV - E1
MUZ-A09YVH - E1
MUZ-A12YV - E1
MUZ-A12YVH - E1
9-1. 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 has stopped running.
5 seconds
15 seconds
ON
Compressor
OFF
ON
Outdoor fan
motor
OFF
9-2. R.V. coil control
Heating . . . . .
Cooling. . . . . .
Dry . . . . . . . . .
NOTE: The 4-way
. . . . . . . . . . . ON
. . . . . . . . . . . OFF
. . . . . . . . . . . OFF
valve reverses for 5 seconds right before start-up of the compressor.
<COOL>
<HEAT>
5 seconds
Compressor
ON
OFF
R.V.coil
ON
OFF
Outdoor fan
motor
ON
OFF
5 seconds
9-3. Relation between main sensor and actuator
Sensor
Discharge temperature thermistor
Purpose
Compressor
LEV
Protection
Indoor coil temperature thermistor Cooling : Coil frost prevention
Heating : High pressure protection
Defrost thermistor
Cooling : High pressure protection
Heating : Defrosting
Fin temperature thermistor
Ambient temperature thermistor
Protection
Cooling : Low ambient temperature operation
Heating : Defrosting (Heater)
21
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Actuator
Outdoor
fan motor R.V.coil
Indoor
fan motor
Defrost
heater
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
10
SERVICE FUNCTIONS
MUZ-A09YV - E1
MUZ-A09YVH - E1
MUZ-A12YV - E1
MUZ-A12YVH - E1
CHANGE IN DEFROST SETTING
<JS> When the JS wire of the outdoor Inverter P.C. board is cut/ soldered, the defrost finish temperature is changed.
(Refer to page 32.)
Defrost finish temperature
(Initial setting)
Jumper wire
none
(cut)
11
(Serial number 4000531~)
(Serial number 4000211~)
8:
MUZ-A09YVH MUZ-A12YVH -
5:
MUZ-A09YV - E1
MUZ-A12YV - E1
MUZ-A09YVH - E1 (Serial number ~4000530)
MUZ-A12YVH - E1 (Serial number ~4000210)
JS
soldered
Model
E1
E1
TROUBLESHOOTING
MUZ-A09YV - E1
MUZ-A09YVH - E1
MUZ-A12YV - E1
MUZ-A12YVH - 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 main unit, and then after
confirming the horizontal vane is closed, turn off the breaker and / or disconnect the power plug.
2) Be sure to turn OFF the power supply before removing the front panel, the cabinet, the top panel, and the
electronic control P.C. board.
3) When removing the electrical parts, be careful to the residual voltage of smoothing capacitor.
4) When removing the electronic control P.C. board, hold the edge of the board with care NOT to apply stress on the
components.
5) When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires.
Housing point
Lead wiring
3. Troubleshooting procedure
1) First, check if the OPERATION INDICATOR 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 electronic control 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 23 and check table on page 24.
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
11-2. Instruction of troubleshooting
Start
Indoor unit
operates.
Outdoor unit
doesn't
operate.
Outdoor unit
operates in
only Test Run
operation.
Outdoor unit
doesn't
operate
even in
Test Run
operation.
Indoor unit operates.
Outdoor unit doesn't
operate normally.
Unit doesn't
operate
normal
operation in
COOL or
HEAT mode.
Indoor unit
doesn't receive
the signal from
remote controller.
Indoor unit
doesn't operate,
when the
EMERGENCY
OPERATION
switch is pressed.
Indoor unit
operates, when
the EMERGENCY
OPERATION
switch is pressed.
Check room
temperature
thermistor.
Refer to
"Test point
diagram and
voltage".
Refer to A
"Check of
inverter/
compressor"
on page 26.
MSZ type
Both lamps
(Left and right)
Flash on and off
at 0.5-second
intervals
Cause:
Indoor unit
• The horizontal
vanes are not
installed
correctly.
Left lamp
Flash on and
off at
0.5-second
intervals
Cause:
Indoor/
Outdoor unit
• Mis-wiring or
trouble of
serial signal.
Left lamp
2-time flash
Cause:
Indoor unit
• Trouble of
room temperature/
indoor coil
thermistor
MSZ type
Left lamp
3-time flash
Cause:
Indoor unit
• Trouble of
indoor fan
motor
Refer to
"Check of
installation of
the horizontal
vanes".
Refer to N
"How to check
of mis-wiring
and serial
signal error
(When
outdoor unit
doesn't work)"
on page 31.
Check room
temperature
thermistor
and indoor
coil thermistor.
Refer to
"Test point
diagram and
voltage".
Refer to
"Check of
indoor fan
motor".
Refer to H
"Check of
R.V. coil"
on page 28.
Refer to
"Check of
remote controller
and receiver
P.C. board".
1. Check indoor / outdoor
connecting wire.
(Check if the power
is supplied to the
indoor unit.)
2. Refer to
"Check of indoor
electronic control
P.C. board".
Left lamp
4-time flash
Cause:
Indoor unit
• Trouble of
indoor unit
control
system
Replace the
indoor
electronic
control
P.C. board.
23
OPERATION INDICATOR
lamp on the indoor unit is
flashing on and off.
As for indoor unit MSZ type,
refer to service manual OB327.
As for indoor unit MCFZ type,
refer to service manual OB344.
Left lamp
5-time flash
Cause:
Outdoor unit
• Outdoor
power
system
abnormality
Left lamp
6-time flash
Cause:
Outdoor unit
• Trouble of
thermistor
in outdoor
unit
Left lamp
7-time flash
Cause:
Outdoor unit
• Trouble of
outdoor
control
system
Refer to A
"Check of
inverter/
compressor"
on page 26.
Refer to G
"Check of
outdoor
thermistors"
on page 28.
Replace the
inverter P.C.
board.
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
1. Troubleshooting check table
<Inverter P.C. board>
NOTE 1. The location of LED is illustrated at the right figure. Refer to page 32.
2. LED lights up during normal operation.
No.
1
Symptom
Outdoor unit
does not
operate
LED indication Abnormal point/ Condition
1-time flash every Outdoor power
2.5 seconds
system
NOTE:
For abnormality
location, refer to
'Indoor
troubleshooting
check table'.
Refer to service
manual OB327.
2
3
Outdoor control
system
Bus-bar voltage
4
5
Outdoor
thermistors
'Outdoor unit 2-time flash
2.5 seconds OFF
stops and
restarts 3
minutes later'
3-time flash
is repeated
2.5 seconds OFF
Overcurrent
protection
Detection method
LED
Flashing
Checkpoint
When compressor has stopped by overcurrent protection within · Check stop valve.
· Reconnect connectors.
1 minute 3 times in a row after compressor start-up, unit stops.
· Refer to A "How to check inverter/
compressor" on page 26.
When discharge temperature thermistor, fin temperature
· Refer to G "Check of outdoor
thermistor or defrost thermistor shorts or opens during
thermistors" on page 28.
compressor running, compressor stops and restarts 3 minutes
later.
Replace inverter P.C. board after
When nonvolatile memory data cannot be read properly,
check of A "How to check inverter/
compressor stops and restarts 3 minutes later.
compressor" on page 26 and G
"Check of outdoor thermistors" on
page 28.
Refer to A "How to check inverter/
When the bus-bar voltage of inverter cannot be detected
compressor" on page 26.
normally.
When 12A(MUZ-A09YV, MUZ-A09YVH)/ 20A(MUZ-A12YV,
MUZ-A12YVH) current flows into power transistor module,
compressor stops and restarts 3 minutes later.
· Check stop valve.
· Reconnect connectors.
· Refer to A "How to check inverter/
compressor" on page 26.
· Check refrigerant circuit and
refrigerant amount.
· Refer to G "Check of outdoor
thermistors" on page 28.
· Refer to L "Check of LEV" on page
30.
Fin temperature
4-time flash
When temperature at heat sink exceeds 83: or temperature of · Check around outdoor unit.
· Check outdoor unit air passage.
2.5 seconds OFF thermistor overheat inverter P.C. board exceeds 79:, compressor stops and
· Refer to I "Check of outdoor fan
protection
restarts 3 minutes later.
motor" on page 29.
6
7
Discharge
temperature
overheat
protection
When discharge temperature thermistor exceeds 116:,
compressor stops. Compressor can restart if discharge
temperature thermistor reads 100: or less 3 minutes later.
8
5-time flash
High pressure
2.5 seconds OFF protection
When indoor coil thermistor exceeds 70:.
When the defrost thermistor exceeds 70: in COOL mode.
· Check refrigerant circuit and
refrigerant amount.
· Check stop valve.
Compressor
8-time flash
sinusoidal current
2.5 seconds OFF
When the waveform of compressor current is distorted.
9
· Check stop valve.
· Reconnect connector.
· Refer to A "How to check inverter/
compressor" on page 26.
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
circulation is short cycled.
10
Outdoor unit
operates (at
low
frequency)
11
12
13
14
15
16
Outdoor unit
operates
Frequency drop by When current from power outlet exceeds 7A(MUZ-A09YV,
1-time flash
2.5 seconds OFF current protection MUZ-A09YVH)/ 9A(MUZ-A12YV, MUZ-A12YVH), compressor
frequency lowers.
Frequency drop by
3-time flash
2.5 seconds OFF high pressure
protection
Frequency drop by
defrosting in COOL
mode
4-time flash
Frequency drop by
2.5 seconds OFF discharge
temperature
protection
When indoor coil thermistor exceeds 55: in HEAT mode,
compressor frequency lowers.
5-time flash
Outdoor
2.5 seconds OFF thermistors
When ambient temperature thermistor shorts or opens during
compressor running.
· Refer to G "Check of outdoor
thermistors" on page 28.
Low discharge
7-time flash
2.5 seconds OFF temperature
protection
When discharge temperature has been 40: or less for 20
minutes.
PAM protection
8-time flash
2.5 seconds OFF
PAM:
Pulse
Amplitude
Modulation
When the overcurrent flows into IGBT(Insulated Gate Bipolar
transistor : TR821) or when the bus-bar voltage reaches 300V
or more, PAM stops and restarts.
Inverter check
9-time flash
2.5 seconds OFF mode
When the connector of compressor is disconnected, inverter
check mode starts.
· Refer to L "Check of LEV" on
page 30.
· Check refrigerant circuit and
refrigerant amount.
This is not malfunction.
PAM protection will be activated in
the following cases;
1Instantaneous power voltage drop
(Short time power failure)
2When the power supply voltage is
high.
Check if the connector is correctly
connected.
Refer to A "How to check inverter/
compressor" on page 26.
When indoor coil thermistor reads 6: or less in COOL mode,
compressor frequency lowers.
When discharge temperature thermistor exceeds 110:,
compressor frequency lowers.
The flashing frequency shows the number of times the LED blinks after every 2.5-second OFF.
(Example) When the flashing frequency is “2”.
0.5-second ON
ON
2.5-second OFF
2.5-second OFF
OFF
24
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0.5-second ON
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
2. Trouble criterion of main parts
MUZ-A12YV - E1
MUZ-A12YVH - E1
Part name
Discharge temperature
thermistor(RT62)
Fin temperature
thermistor(RT64)
Measure the resistance with a tester. (Part temperature –15˚C ~ 40˚C)
Normal
5 k" ~ 65 k"
Abnormal
Open or short-circuit
Measure the resistance with a tester.
Before measurement, hold the thermistor with your hands to warm it up.
(Part temperature 0˚C ~ 40˚C)
Normal
150 k" ~ 600 k"
Abnormal
Open or short-circuit
Measure the resistance with a tester.
Before measurement, hold the thermistor with your hands to warm it up.
(Part temperature 0˚C ~ 40˚C)
Normal
Abnormal
Open or short-circuit
30 k" ~ 180 k"
Measure the resistance between the terminals with a tester.
(Part temperature –15˚C ~ 40˚C)
Normal
MUZ-A09YV
MUZ-A12YV
MUZ-A09YVH
MUZ-A12YVH
Compressor(MC)
U-V
U-W
V-W
Outdoor fan motor(MF)
INNER FUSE
152i 05 : CUT OFF
1.31 " ~ 1.66"
0.42 " ~ 0.53 "
RED BLK
2
3
Abnormal
Open or
short-circuit
1
W
V
U
Measure the resistance between the terminals with a tester.
(Part temperature –15˚C ~ 40˚C)
Color of lead wire
WHT – BLK
BLK – RED
Normal
299 " ~ 374 "
242 " ~ 304 "
Abnormal
Open or
short-circuit
R.V. coil(21S4)
LEV(Expansion valve)
Measure the resistance with a tester.
(Part temperature : –15˚C ~ 40˚C)
Normal
Color of lead wire
WHT – RED
RED – ORN
39 " ~ 50 "
YLW – BRN
BRN – BLU
Measure the resistance with a tester.
(Part temperature -15˚C ~ 40˚C)
Normal
341 " ~ 427 "
Abnormal
Open or short-circuit
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FUSE
BLK
Measure the resistance between the terminals with a tester.
(Part temperature –15˚C ~ 40˚C)
Normal
Abnormal
Open or short-circuit
1.90 k" ~ 2.39 k"
Defrost heater(H)
WHT
RED WHT
WHT6
Abnormal
Open or
short-circuit
RED1
LEV
ORN4
BLU3
Ambient temperature
thermistor(RT65)
Figure
YLW5
Defrost thermistor
(RT61)
Check method and criterion
BRN2
MUZ-A09YV - E1
MUZ-A09YVH - E1
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
When OPERATION INDICATOR lamp flashes 5-time.
Outdoor unit does not operate.
A How to check inverter/ compressor
Disconnect the connector (CN61)
between compressor and power
transistor module (IPM).
Check the voltage
between terminals.
Are the voltages
balanced?
See B “Check of open phase” on page 26.
No
Check the resistance of power transistor
module.
See C 'Check of power transistor module' on page 26.
Yes
Check the
compressor.
See D “Check of compressor” on page 27.
Yes
Is the resistance
infinite?
Replace the inverter P.C.
board.
No
(0~several ")
Replace the inverter P.C.
board and compressor.
B Check of open phase
●With the connector between compressor and power transistor
module disconnected, activate the inverter and check if the inverter
is normal by measuring the balance of voltage between terminals.
Output voltage [V]
115V
<< Operation method>>
Start cooling or heating operation by pressing the EMERGENCY OPERATION
switch on the indoor unit. (test-run mode : refer to page 14)
<<Measurement point>>
at 3 points
BLK (U)-WHT (V)
w Measure AC voltage between
BLK (U)-RED (W)
the lead wires at 3 points.
WHT(V)-RED (W)
NOTE 1. Output voltage varies according to power supply voltage.
2. Measure the voltage by analog type tester.
3. During this check, LED of inverter P.C. board flashes 9 times.
Inverter P.C. board
LED
Flashing
9-time flash
2.5-second OFF
C Check of power transistor module
●Disconnect the connector (CN61) between compressor and
power transistor module, and measure the resistance between
terminals on the power transistor module.
<<Measurement point>>
at 6 points
BLK-WHT, WHT-BLK
BLK-RED, RED-BLK
WHT-RED, RED-WHT
ohmmeter indication
"
X1
Normal
(infinite)
"
<<Judgement>>
Infinite ["]···········Normal
0~dozens of ······Abnormal (short)
X1
26
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Abnormal
(0~dozens of ")
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Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
D Check of compressor
Start
E "Check of compressor
winding" on page 27.
Is the compressor normal?
No
Replace the compressor.
Yes
F "Check of compressor
operation time" on page
27. Does the compressor
operate continuously?
Yes
Is the compressor
operation time more than
10 seconds?
No
No
Replace the compressor.
Yes
Ok
Check the refrigerant circuit.
E Check of compressor winding
● Disconnect the connector (CN61) between compressor and power
transistor module, and measure the resistance between the
compressor terminals.
<<Measurement point>>
at 3 points
BLK-WHT
w Measure the resistance between the
BLK-RED
lead wires at 3 points.
WHT-RED
<<Judgement>>
Refer to page 25.
0["] ···············Abnormal [short]
Infinite["] ·······Abnormal [open]
NOTE 1. Be sure to zero the ohmmeter before measurement.
2. Winding resistance for each phase at 20:.
Refer to page 5.
WHT
Ohmmeter indication
RED BLK
2
3
1
W
"
X1
Normal
(1~several " )
V
U
Compressor motor
"
X1
Abnormal
(0" ····· short)
X1
Abnormal
(infinite····· open)
"
F Check of compressor operation time
●Connect the compressor and activate the inverter. Then measure
the time until the inverter stops due to over current.
<<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 to the
stop of compressor due to over current.
<<Judgement>>
For reference
0~10 seconds·····················Abnormal (compressor short)
10~60 seconds···················Abnormal (compressor lock-out)
60 seconds~5 minutes·······Abnormal (refrigerant circuit defect)
more than 5 minutes···········Normal
27
0 second
10 seconds
Outdoor fan starts
Abnormal
(Compressor winding short or layer short)
Abnormal
(Compressor lock-out)
60 seconds
www.ilmalämpöpumput.com
Abnormal
(Refrigerant circuit defect, etc.)
5 minutes
Normal
OB328 A--1qxp
04.4.26 4:49 PM
Page 28
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
When OPERATION INDICATOR lamp flashes 6-time.
The thermistors in the outdoor unit are abnormal.
G Check of outdoor thermistors
Defrost thermistor RT61
Disconnect the connectors CN641, CN642 and CN643 from the inverter P.C. board.
(Check the characteristics of each thermistor.)
Measure the
resistance
between CN641
1 and 2.
1 Reconnect the
connectors CN641,
CN642 and CN643.
2 Disconnect the
connector between
the compressor and
power transistor
module.
Discharge
temperature
thermistor RT62
Measure the
resistance
between CN641
3 and 4.
Fin temperature
thermistor RT64
Measure the
resistance
between CN642
1 and 2.
Ambient
temperature
thermistor RT65
Measure the
resistance
between CN643
1 and 2.
Replace the inverter
P.C. board.
Does the
resistance of the
thermistor have the
characteristics on
page 32?
No
Turn ON the
power supply and
press the
EMERGENCY
OPERATION
switch.
Yes
Replace the
thermistor
except RT64.
In case of RT64,
replace the
inverter P.C.
board.
Since RT64 is
combined with
inverter P.C.
board.
No
Does the unit
operate 10 minutes
or more?
Yes
Is LED of the
inverter P.C. board
flashes 5 times?
Yes
No
Reconnect the
connector or
connecting wire.
H Check of R.V. coil
w First of all, measure the resistance of R.V. coil to check if the coil is defective (refer to page 25).
w In case CN721 is not connected or R.V. coil is open, voltage is generated between the
terminal pins of the connector although any signal is not being transmitted to R.V. coil.
Check if CN721 is connected.
Unit operates COOL mode even if it is set to HEAT mode.
Disconnect connector (CN61) between
compressor and power transistor
module.
Turn ON the power supply and press the
EMERGENCY OPERATION switch
twice (HEAT mode).
Is there 230V AC between CN7211 and
2 on the power P.C.board 3 minutes after
the power supply is turned ON?
No
Replace the
power P.C. board.
Yes
Replace the 4-way valve.
CN721
Power P.C. board
(soldered side)
Unit operates HEAT mode even if it is set to COOL mode.
Disconnect connector (CN61) between
compressor and power transistor
module.
Turn ON the power supply and press the
EMERGENCY OPERATION switch once
(COOL mode).
Is there 230V AC between CN7211 and
2 on the power P.C.board 3 minutes after
the power supply is turned ON?
No
•Defective R.V. coil
•Defective 4-way valve
28
www.ilmalämpöpumput.com
Yes
Replace the
power P.C. board.
OB328 A--1qxp
04.4.26 4:49 PM
Page 29
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
Outdoor fan motor does not operate.
I Check of outdoor fan motor
Check the resistance of fan motor. (Refer to page 25.)
Is the resistance of fan
motor normal?
No
Replace the outdoor
fan motor.
Yes
Disconnect the connector CN771 on the power P.C.
board.
Disconnect the connector (CN61) between
compressor and power transistor module.
Turn ON the power supply and press the
EMERGENCY OPERATION switch.
Rectify indoor/ outdoor
connecting wire.
Yes
3 minutes after
power ON, is there voltage
230V AC between outdoor
terminal block 2 and N?
Is there voltage 230V
AC between indoor
terminal block 2 and
N?
No
No
Replace the indoor
electronic control
P.C. board.
Yes
Fan
motor
Outdoor terminal block
Indoor/ outdoor
connecting
wire
Is there voltage 230V
AC between CN771 2
and 3 on the power
P.C. board?
3
N
2
No
Replace the
power P.C. board.
Yes
1 2 3
Replace the
outdoor fan motor.
CN771
Power P.C. board
Inverter does not operate.
J Check of power supply
Outdoor terminal block
Disconnect the connector
(CN61) between compressor and
power transistor module.
Turn ON power supply and press
the EMERGENCY OPERATION
switch.
Indoor/ outdoor
connecting
wire
Rectify indoor/ outdoor
connecting wire.
3
N
2
Yes
3 minutes after power
ON, is there voltage of
230V AC between
outdoor terminal block 2
and N?
Yes
Is there voltage
280V ~ 370V DC
between LD61A (+)
and LD66A (–) on the
inverter P.C. board?
(Refer to page 32.)
No
Check the electric
parts in main circuit.
No
Yes
Is there voltage 230V AC
between indoor terminal
block 2 and N?
No
Dose LED on the inverter
P.C. board light up or
flash? (Refer to page 32.)
No
Replace the indoor
electronic control
P.C. board.
Replace the inverter
P.C. board.
Yes
280V~370V DC
Ok.
If flash, refer to
page 24.
LD66A (–)
LD61A (+)
Inverter P.C. board
(Pattern side)
29
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04.4.26 4:49 PM
Page 30
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
Outdoor unit does not operate at all or stops immediately due to over current.
K Check of current-limiting resistor
When the current-limiting resistor is open, the rush current limiting relay (X64) may not work properly.
Start
Does current-limiting resistor (R64) detect 10"?
No ∞
Replace the power P.C. board.
Yes
Ok
Heating/Cooling does not work sufficiently.
L Check of LEV (Expansion valve)
Turn ON the power supply.
1 During pressing both the OPERATION SELECT
button and the TOO COOL button on the
remote controller at the same time,
press the RESET button.
2 First, release the RESET button.
And release the other two buttons since all LCD
in operation display section of the remote controller
is displayed after 3 seconds.
1 During pressing both the OPERATION SELECT
button and the TOO COOL button on the
remote controller at the same time,
press the RESET button.
2 First, release the RESET button.
And release the other two buttons since all LCD
in operation display section of the remote controller
With remote controller set toward the indoor unit, press
the OPERATE/ STOP(ON/ OFF) button and confirm one
beep tone.
is displayed after 3 seconds.
:
CLOCK
AMPM
LEV operates in full-opening
direction.
Do you hear the expansion
valve "click, click·······"?
Do you feel the expansion
valve vibrate on touching it ?
AMPM
Yes
Ok
No
Is LEV properly fixed to the
expansion valve?
No
NOTE : After check of LEV, do the undermentioned
operations.
1. Turn OFF the power supply and
turn ON again.
2. Press the RESET button on the remote
controller.
Properly fix the LEV to the
expansion valve.
Yes
Does the resistance of LEV
have the characteristics on
page 25?
Yes
No
Replace the LEV.
Measure each voltage between connector pins
of CN724 on the inverter P.C. board.
1.Pin3(-)
Pin1(+)
2.Pin4(-)
Pin1(+)
3.Pin5(-)
Pin1(+)
4.Pin6(-)
Pin1(+)
Is there about 3~5V AC between each?
NOTE: Measure the voltage by an analog tester.
No
Replace the
inverter P.C. board.
Yes
Replace the
expansion valve.
Outdoor base gets frozen.
M Check of defrost heater
<MUZ-A09YVH MUZ-A12YVH>
Check the following points before checking electric continuity.
1) Does the resistance of ambient temperature thermistor have the characteristics? (Refer to page 32.)
2) Is the resistance of defrost heater normal? (Refer to page 25.)
3) Does the heater protector remain conducted (not open)?
4) Are both ambient temperature thermistor and circuit of defrost heater securely connected to connectors?
In HEAT mode, for more than 5 minutes, let the ambient temperature thermistor continue to read 5: or less, and let the
defrost thermistor continue to read -1: or less.
Yes
No problem of the
power P.C. board.
Yes
Replace the power
P.C. board.
No
Is the voltage between CN726 6(+)-3(-) on the
power P.C. board 0V DC? (Refer to page 33.)
6
CN726
230V AC
3
2
1
CN722
1
2
Is there 230V AC between CN722 1 and 3 on the
power P.C. board?
3
1
2
NOTE: In case both thermistors are more than the above
temperature, cool them with cold water etc...
No
Replace the inverter P.C. board.
26H
H
30
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OB328A --2qxp
04.4.26 4:50 PM
Page 31
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
When OPERATION INDICATOR lamp flashes ON and OFF in every 0.5-second.
Outdoor unit doesn’t operate.
N How to check mis-wiring and serial signal error (when outdoor unit does not work)
Start
• Turn ON the power supply.
• Press once EMERGENCY OPERATION switch.
w Short circuit of JPG and JPS on the indoor
electronic control P.C. board enables
self-check to be displayed in 3 seconds.
After 3 minutes, mis-wiring is indicated
(0.5-second ON, 0.5-second OFF)
on OPERATION INDICATOR
lamp on indoor unit.w
Yes
Make them sure.
Is there any mis-wiring, poor contact,
or wire disconnection? w2
No
A
B
:
CLOCK
AMPM
AMPM
•The following indication
applies regardless of shape
of the indicator.
Turn OFF the power supply.
Disconnect the indoor/ outdoor connecting wire.
Short-circuit indoor terminal block N and 3.
Turn ON the power supply.
During pressing both the OPERATION SELECT button
and TOO COOL button on the remote controller at the
same time, press the RESET button.
At first, release the RESET button.
And release the other two buttons since all LCD in
operation display section of the remote controller is
displayed after 3 seconds.
Transmit the signal of remote controller, pressing
OPERATE/STOP (ON/OFF) button on the remote
controller.
(The above procedure allows OPERATION INDICATOR
lamp to indicate the failure-mode.)
w2 Mis-wiring may damage indoor electronic
control P.C. board during the operation.
Be sure to confirm the wiring is correct
before the operation starts.
Blinking
Does the right side of OPERATION INDICATOR
lamp blink quickly?
Operation Indicator
No
(light up or OFF)
Replace the indoor
electronic control
P.C. board.
Yes
Release the failure mode. w3
Remove the short-circuit between indoor terminal block N
and 3.
Reconnect the indoor/ outdoor connecting wire.
Turn ON the power supply.
Press the EMERGENCY OPERATION switch.
Is there amplitude of 5 to 10V DC between outdoor
terminal block N and 3 after 3 minutes (for confirmation of
serial signal)?
Yes
Is there 230V AC between outdoor terminal
block 2 and N?
Yes
1. Turn OFF the power supply.
2. Disconnect the connector (CN61) between the
compressor and the power transistor module.
3. Turn ON the power supply.
4. Press the EMERGENCY OPERATION switch.
w4 Replace the inverter P.C.
board.
Yes
Yes
Is there voltage approximate 280V DC between
LD61A (+) and LD66A (–) on the inverter P.C.
board arter 3 minutes?
No
Turn OFF the power supply and then turn ON
again.
Press EMERGENCY OPERATION switch.
After 3 minutes, is there approximate 230V AC
between outdoor terminal block 2 and N?
No
Replace the indoor/ outdoor connecting wire.
w4 Be careful to the residual voltage of smoothing capacitor.
As for indoor unit MSZ type, refer to service manual OB327.
As for indoor unit MCFZ type, refer to service manual OB344.
No
Replace the
indoor/ outdoor
connecting wire.
No
Replace the
indoor/ outdoor
connecting wire.
w3 Be sure to release the failure-mode
recall function after checking.
Procedure of release of failure-mode.
1 Press the EMERGENCY
OPERATION switch.
2 Turn OFF the power supply.
3 Press the RESET button on the
remote controller.
A
· Turn OFF inverter-controlled lighting
equipment.
· Turn OFF the power supply and then
turn ON again.
· Press the EMERGENCY
OPERATION switch.
Is mis-wiring
indicated when
the contactor
(52C) on the
indoor electronic
control P.C.
board turns ON
3 minutes later?
Yes
B
31
www.ilmalämpöpumput.com
No
· Reinstall
either the
unit or the
light each
other away.
· Attach a filter
on receiving
section of
the indoor
unit.
OB328A --2qxp
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Page 32
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
MUZ-A09YV - E1
MUZ-A12YV - E1
MUZ-A09YVH - E1 MUZ-A12YVH - E1
Inverter P.C. board
(Refer to page 29.)
Back side of unit
LD66A LD61A
280V ~ 370V DC 230V AC Jumper wire for change in defrost setting (JS)
(Refer to page 22.)
LED monitor
lamp
Front side of unit
Connecting
wire with
power P.C.
board
(CN725)
LEV
Connector
connector for indoor/
(CN724) outdoor
communication
(CN601)
100
180
90
160
80
140
70
700
60
600
100
80
60
50
40
30
40
20
20
10
0
0
10 20 30 40 50 60 70 80
Temperature(:)
Discharge temperature thermistor(RT62)
Resistance(k")
120
Zero cross
signal
connector
(CN800)
Defrost thermistor(RT61)
Ambient temperature thermistor(RT65)
Fin temperature thermistor(RT64)
Resistance(k")
Resistance(k")
200
(CN643)
Ambient temperature
thermistor (RT65)
(CN642)
Fin temperature
thermistor (RT64)
(CN641)
Discharge temperature
thermistor (RT62)
Defrost thermistor (RT61)
Output to drive
compressor
(LDU,LDV,LDW)
0
-20
500
400
300
200
100
0
-10
0
10 20 30
Temperature(:)
32
40
www.ilmalämpöpumput.com
0
10
20
30
40
50
60
70
80
90 100 110 120
Temperature(:)
OB328A --2qxp
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Page 33
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
MUZ-A09YV - E1
MUZ-A09YVH - E1
Power P.C. board
MUZ-A12YV - E1
MUZ-A12YVH - E1
Connecting wire with
inverter P.C. board
(CN726)
(Refer to page 30.)
Back side of unit
R.V. coil
(CN721)
Front side of unit
230V AC
Output to drive
outdoor fan
motor (CN771)
230V AC
230V AC
Heater connector 230V AC
(CN722)
}
MUZ-A09YVH
MUZ-A12YVH
33
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OB328A --2qxp
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Page 34
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
12
DISASSEMBLY INSTRUCTIONS
<"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
with lock mechanism
Sleeve
Locking lever
MUZ-A09YV - E1
MUZ-A09YVH - E1
OUTDOOR UNIT
1Slide the sleeve.
2Pull the terminal while
pushing the locking
lever.
1Hold the sleeve, and
pull out the terminal
slowly.
Connector
MUZ-A12YV - E1
MUZ-A12YVH - E1
PHOTOS
OPERATING PROCEDURE
1. Removing the cabinet.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
Photo 1
Remove the screws fixing the top panel. (Photo 1)
Remove the top panel. (Photo 1)
Remove the screw fixing the service panel. (Photo 2)
Pull down the service panel and remove it. (Photo 2)
Remove the screws fixing the cabinet.
Remove the cabinet.
Disconnect the indoor/outdoor connecting wire.
Remove the screws fixing the back panel.
Remove the back panel.
Screws of
the top panel
Screws of
the top panel
Photo 2
Back
panel
Screw of the
service panel
Screws of
the cabinet
Direction to
remove
Hooks
Screws of
the cabinet
34
www.ilmalämpöpumput.com
Service
panel
OB328A --2qxp
04.4.26 4:50 PM
Page 35
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
OPERATING PROCEDURE
PHOTOS
2. Removing the inverter assembly, inverter P.C. board
and power P.C. board
(1) Remove the top panel, cabinet and service panel.
(Refer to 1.)
(2) Disconnect the indoor/outdoor connecting wire and remove
the back panel. (Refer to 1.)
(3) Disconnect the ground wire, the lead wire to the reactor
and the following connectors;
<Power P.C. board>
CN721 (4-way valve)
CN722 (Defrost heater) MUZ-A09/A12YVH- E1
CN771 (Fan motor)
<Inverter P.C. board>
CN641 (Defrost thermistor and discharge temperature
thermistor)
CN643 (Ambient temperature thermistor)
CN724 (LEV)
(4) Remove the compressor connector (CN61).
(5) Remove the screws fixing the relay panel. (Photo 3)
(6) Remove the inverter assembly. (Photo 3)
(7) Disconnect all connectors and lead wires on the inverter
P.C. board. (Photo 4)
(8) Remove the inverter P.C. board from the inverter assembly.
(9) Remove the screw fixing the power P.C. board. (Photo 4)
(10) Disconnect all connectors and lead wires on the power P.C.
board.
(11) Remove the power P.C. board from the inverter assembly.
Photo 3
Screws of the relay panel
Screw of
the ground
wire
Photo 4
Heat sink
Inverter
P.C. board
Power
P.C. board
3. Removing R.V. coil
(1) Remove the top panel, cabinet and service panel.
(Refer to 1.)
(2) Disconnect the indoor/outdoor connecting wire and remove
the back panel. (Refer to 1.)
(3) Remove the inverter assembly. (Refer to 2.)
(4) Remove the R.V. coil. (Photo 5)
35
www.ilmalämpöpumput.com
Screw of the power
P.C. board
OB328A --2qxp
04.4.26 4:50 PM
Page 36
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
OPERATING PROCEDURE
PHOTOS
4. Removing the defrost thermistor and discharge temperature thermistor
Photo 5
R.V. coil
(1) Remove the top panel, cabinet and service panel.
(Refer to 1.)
(2) Disconnect the indoor/outdoor connecting wire and remove
the back panel. (Refer to 1.)
(3) Remove the inverter assembly. (Refer to 2.)
(4) Pull out the defrost thermistor from its holder. (Photo 6)
(5) Pull out the discharge temperature thermistor from its
holder. (Photo 5)
Discharge temperature thermistor
Photo 6
Defrost
thermistor
36
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Page 37
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
OPERATING PROCEDURE
PHOTOS
5. Removing outdoor fan motor
(1) Remove the top panel, cabinet and service panel.
(Refer to 1.)
(2) Disconnect the indoor/outdoor connecting wire and remove
the back panel. (Refer to 1.)
(3) Remove the inverter assembly. (Refer to 2.)
(4) Remove the propeller.
(5) Remove the screws fixing the fan motor. (Photo 7)
(6) Remove the fan motor. (Photo 7)
6. Removing the compressor and 4-way valve
(1) Remove the top panel, cabinet and service panel.
(Refer to 1.)
(2) Disconnect the indoor/outdoor connecting wire and remove
the back panel. (Refer to 1.)
(3) Remove the inverter assembly. (Refer to 2.)
(4) Recover gas from the refrigerant circuit.
(5) Detach the welded part of the suction and the discharge
pipe connected with compressor.
(6) Remove the nuts of compressor legs.
(7) Remove the compressor.
(8) Detach the welded part of pipes conneced with 4-way
valve. (Photo 8)
Photo 7
Propeller
Screws of
outdoor
fan motor
Photo 8
NOTE
● Before using a burner, reclaim gas from the pipes until the
pressure gauge shows 0 kg/cm2 (0MPa).
● Use the burner under the condition that gas can be recovered
even when the inner pressure rises by heat.
37
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Welded parts of 4-way valve
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Page 38
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
13
PARTS LIST
MUZ-A09YV - E1
MUZ-A12YV - E1
E1
MUZ-A09YVH MUZ-A12YVH - E1
13-1. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS
10 9
16 15 14
17
20
18
19
21
13
1
11
12
3
2
4
5
6
8
7
Part number that is circled is not shown in the illustration.
No.
Part No.
Part Name
Symbol
Q'ty/unit
in Wiring
MUZMUZMUZMUZA09YV- A09YVH- A12YV- A12YVH-
Diagram
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
838
838
838
838
840
838
839
065
838
838
838
838
838
838
838
838
840
838
838
838
838
839
838
840
840
282
232
521
501
290
290
900
900
506
661
662
245
233
640
493
961
293
293
515
523
297
630
630
301
526
381
937
CABINET
GRILLE
PROPELLER
BASE
BASE
COMPRESSOR
COMPRESSOR
COMPRESSOR RUBBER SET
STOP VALVE (GAS)
STOP VALVE (LIQUID)
SERVICE PANEL
BACK PANEL
EXPANSION VALVE
EXPANSION VALVE COIL
4-WAY VALVE
SEPARATOR
SEPARATOR
MOTOR SUPPORT
CONDENSER NET
TOP PANEL
OUTDOOR HEAT EXCHANGER
OUTDOOR HEAT EXCHANGER
OUTDOOR FAN MOTOR
DEFROST HEATER
HEATER PROTECTOR
CAPILLARY TUBE
MC
MC
LEV
E1
E1
E1
E1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
MF
H
26H
1
1
38
www.ilmalämpöpumput.com
1
1
1
3
1
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Remarks
1
1
1
1
3
1
1
1
1
1
1
1
KNB073FBVH
KNB092FAAH
3RUBBERS/SET
{9.52
{6.35
1
1
1
1
1
1
1
1
1
RA6V21-
{3.0✕{2.0✕200
OB328A --2qxp
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Page 39
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
MUZ-A09YV - E1
MUZ-A09YVH - E1
MUZ-A12YV - E1
MUZ-A12YVH - E1
13-2. OUTDOOR UNIT
ELECTRICAL PARTS
9
8
7
6
2
3
1
4
5
No.
Part No.
1 E02
E02
2
E02
3 E02
4 E02
5 E02
6 E02
7 E02
8 E02
E02
9
E02
838
838
840
838
838
838
735
735
838
838
839
337
444
444
490
306
308
241
382
374
451
451
Part Name
Q'ty/unit
Symbol
MUZMUZMUZin Wiring MUZDiagram A09YV- A09YVH- A12YV- A12YVH-
REACTOR
L61
POWER P.C. BOARD
POWER P.C. BOARD
R.V. COIL
21S4
THERMISTOR SET
RT61,RT62
AMBIENT TEMPERATURE THERMISTOR RT65
FUSE HOLDER
F61
FUSE
TERMINAL BLOCK
TB
INVERTER P.C. BOARD
INVERTER P.C. BOARD
39
E1
E1
E1
E1
1
1
1
1
1
1
1
1
1
1
1
1
1
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1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Remarks
DEFROST, DISCHARGE
250V/20A
3P
Including heat sink and RT64
Including heat sink and RT64
OB328A --2qxp
04.4.26 4:50 PM
Page 40
Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy
MUZ-A09YV - E1
MUZ-A12YV - E1
13-3. DRAIN SOCKET
Outdoor unit {42 drain hole
1
Soft vinyl chloride hose of
25mm inside diameter.
No.
Parts No.
Parts Name
Q'ty/unit
Symbol
in Wiring
MUZ-A09YV- E1 MUZ-A12YVDiagram
1 E02 838 704 DRAIN SOCKET
1
E1
Remarks
1
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN
C Copyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD
Distributed in Apr. 2004. No. OB328 REVISED EDITION-A 6
Distributed in Jan. 2004. No. OB328 6
Made in Japan
New publication, effective Apr. 2004
Specifications subject to change without notice.
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