Mitsubishi OB455E Service Manual
OUTDOOR UNIT
Revision E:
• MUZ-GB50VA-E3 has been added.
Please void OB455 REVISED EDITION-D.
SERVICE MANUAL
Wireless type
Models
MUZ-GB50VA MUZ-GB50VA MUZ-GB50VA -
E1
E2
E3
HFC
utilized
R410A
No. OB455
REVISED EDITION-E
Indoor unit service manual
MSZ-GB·VA Series (OB454)
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 4
4. NOISE CRITERIA CURVES ······························ 6
5. OUTLINES AND DIMENSIONS ························ 6
6. WIRING DIAGRAM ············································ 7
7. REFRIGERANT SYSTEM DIAGRAM ··············· 9
8. PERFORMANCE CURVES ····························· 11
9. ACTUATOR CONTROL ··································· 16
10. SERVICE FUNCTIONS ···································· 17
11. TROUBLESHOOTING ····································· 18
12. DISASSEMBLY INSTRUCTIONS ···················· 42
13. RoHS PARTS LIST ·········································· 46
NOTE:
• This service manual describes technical data of the outdoor units.
Revision A:
• Compressor has been changed.
Model
Previous SNB130FLDH E12 851 900
New SNB130FLDH1 E12 939 900
RoHS PARTS LIST number
Revision B:
• REFRIGERANT SYSTEM DIAGRAM has been changed.
• Oil separator has been added.
• Capillary tube has been added. (ø1.8 × ø0.6 × 1000)
• MUZ-GB50VA-
• Check of outdoor thermistors (10-6.
E2
has been added.
) has been corrected.
Revision C:
• RoHS PARTS LIST has been changed.
Revision D:
• RoHS PARTS LIST has been changed.
Revision E:
• MUZ-GB50VA-E3 has been added.
2
1
TECHNICAL CHANGES
MUZ-GA50VA -E1 MUZ-GB50VA -
1. Refrigerant filling capacity has been changed.
2. Outdoor electronic control P.C. board has been changed.
MUZ-GB50VA -E1 MUZ-GB50VA -
1. Compressor has been changed. (SNB130FLDH1 SNB130FLEH1)
2. Outdoor electronic control P.C. board has been changed.
MUZ-GB50VA -E2 MUZ-GB50VA -
1. Compressor has been changed. (SNB130FLEH1 SNB130FGBH)
2. Outdoor electrical parts have been changed.
3. Refrigerant circuit has been changed.
E1
E2
E3
3
2
PART NAMES AND FUNCTIONS
MUZ-GB50VA
Air inlet
(back and side)
ACCESSORIES
Piping
Drain hose
Air outlet
Drain outlet
3
Capacity Rated frequency (Min.-Max.) kW 5.0 (0.9-5.8) 5.8 (0.9-7.8)
Electrical
Coeffi cient of performance (C.O.P) 1 3.03 3.41
Compressor
Fan motor
Dimensions W × H × D mm 840 × 850 × 330
Weight kg 53
Dehumidifi cation
Air fl ow 1 (High/Low) m3/h 2,940/1,650 2,940/2,210
Special
NOTE : Test conditions are based on ISO 5151.
Cooling : Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C Wet-bulb temperature 24°C
Heating : Indoor Dry-bulb temperature 20°C Wet-bulb temperature 15°C
Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C
Refrigerant piping length (one way) : 5 m
1 Measured under rated operating frequency.
SPECIFICATION
Outdoor model MUZ-GB50VA
Function Cooling Heating
Power supply Single phase 230 V, 50 Hz
Breaker capacity A 20
Running current 1 A 7.23 7.43
Power input 1 W 1,610 1,660
data
Power factor
Starting current 1 A 7.46
Sound level 1 (High/Low) dB(A) 52/51 55/53
Fan speed (High/Low) rpm 800/480 800/620
Fan speed regulator 2
Refrigerant fi lling capacity (R410A) kg 1.50
remarks
Refrigeration oil (Model) NEO22
1% 97
E1
E1, E2
E3
E2
E3
W
/h 2.2 —
Model
Output
Compressor motor current 1 A 6.91 7.11
Model RC0J60-AA
Current
1 A 0.32
Drain socket 1
Drain cap ø33 2
SNB130FLDH or SNB130FLDH1
SNB130FLEH1
SNB130FGBH
850
900
44
Specifi cations and rating conditions of main electric parts
Item
Current transformer
Model
(CT1,2) 20 A
(CT61) 20 A
MUZ-GB50VAMUZ-GB50VA-
Smoothing capacitor (CB1,2,3) 560 μF 450 V
(F64) 250 V 2 A
Fuse
(F801) 250 V 3.15 A
(F911) 250 V 1 A
Expansion valve coil (LEV) DC 12 V
Intelligent power module
(IPM) 15 A 600 V
(HC930) 3 A 600 V
Reactor (L) 340 μH 20 A
Power factor controller (PFC) 20 A 600 V
(R64A,B) 10 Ω 10 W
Resistor
(R937A,B) 1.1 Ω 2 W 2%
(RS1~4) 0.04 Ω 7 W
Solenoid coil relay (SSR61) 0.5 A 600 V
Terminal block (TB1,TB2) 3 P
Relay (X64) 20 A 250 V
R.V. coil (21S4) AC 220 - 240 V
E1
E2
Item
Current transformer
Model
(CT) 20 A
(CT761, CT781) 15 A
MUZ-GB50VA-
Smoothing capacitor (C61, C62, C63) 620 μF 420 V
Diode module
Fuse
(F701, F801, F901) T3.15AL250V
(DB61) 25 A 600 V
(DB65) 25 A 600 V
(F61) T20AL250V
Intelligent power module (IPM) 20 A 600 V
Expansion valve coil (LEV) DC 12 V
Reactor (L61) 23.0 mH
(R61, R62) 180 mΩ 5 W (2 elements)
Current-detecting resistor
(R825) 25 mΩ 5 W
(R937A, R937B) 1.1 Ω 2 W
Current-limiting PTC thermistor (PTC64, PTC65) 33 Ω
Terminal block (TB1, TB2) 3 P
Relay
(X63) 3 A 250 V
(X64) 20 A 250 V
R.V. coil (21S4) AC 220 - 240 V
IGBT (TR821) 30 A 600 V
E3
55
4
NOISE CRITERIA CURVES
MUZ-GB50VA
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
5
NOISE
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
OUTLINES AND DIMENSIONS
MUZ-GB50VA
515
330
299
66
51
34
40
FAN SPEED
NC-70
NC-60
Test conditions
NC-50
NC-40
NC-30
NC-20
Cooling : Dry-bulb temperature 35°C
Wet-bulb temperature (24°C)
Heating : Dry-bulb temperature 7°C
Wet-bulb temperature 6°C
REQUIRED SPACE
100 mm or more
360
High
FUNCTION
COOLING
HEATING
OUTDOOR UNIT
MICROPHONE
Open as a rule
500 mm or more if
the front and both
sides are open
SPL(dB(A)) LINE
52
55
1m
Unit: mm
100 mm or more
200 mm or more if
there are obstacles
to both sides
850
430
121
500
840
80
Open as a rule
500 mm or more if the back,
both sides and top are open
350 mm or more
Service panel
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) ø6.35
30°
155
90
35°
Gas refrigerant
pipe joint
Refrigerant pipe
198
(flared) ø12.7
6
6
n
WIRING DIAGRAM
MUZ-GB50VAMUZ-GB50VA-
RED
W
CT2
PFC
R
S
E1
E2
CB3
CB2
CB1
W
V
V
MC
IPM
CN5
21
U
BLK
WHT
U
CT1
RS3
RS1
27
21
RS4
RS2
CN2
CN3
CN4
6543 1
RT64
POWER
BOARD
LD9
LD1LD2
12
GRN
WHT
RED
BLK
BLK
ORN
PNK
GRY
CN801
13
12
CN701
MF
YLW
BLU
CN931
F801
RED
R937A
T801
BLK
WHT
23134512
CN932
HC930
R937B
diagram for servicing.
refer to the indoor unit electric wiring
1.About the indoor side electric wiringNOTES:
NAME
:Terminal block :Connector
3.Symbols below indicate.
2.Use copper conductors only (for field wiri
RED
1
L
2
RED
3X64
TAB1
BRN
TB1
CIRCUIT
BREAKER
POWER SUPPLY
~/N 230V 50Hz
YLW
R64B
R64A
F64
NF
L
4
3
BLK
YLW
TAB4
NR64
BLU
N
BLK
TAB2
PE
21
CN903
CT61
BLK
SSR61
F911
21
CN902
GRN/YLW
5123
CN901
12
CN912
LDE2
LDE1
13
CN61
NOISE
FILTER
BLU
BLU
GRN
GRN
P.C.BOARD
TO INDOOR
BLK
BLK
BLK
1 567
BLK
5321
BLK
BLK
BLK
BLK
21S4
ELECTRONIC
1
WHT
BLU
WHT
TB2
230V~
UNIT
CONNECTING
CN702
CN661
CN781
CN663
CONTROL
P.C.BOARD
CN601
3
BLU
S2
S1
12-24V
CN7954123 78
21
5
RED
S3
6
LEV
AMBIENT TEMPERATURE THERMISTOR
FIN TEMPERATURE THERMISTOR
RT65
RT64
SYMBOL
NAME
OUTDOOR HEAT EXCHANGER
RT68
TERMINAL BLOCK
TRANSFORMER
SOLENOID COIL RELAY
TEMPERATURE THERMISTOR
TB1
T801
SSR61
TERMINAL BLOCK
R.V. COIL
RELAY
X64
TB2
21S4
RT61 RT62 RT68
RT65
OUTDOOR FAN MOTOR
COMPRESSOR
VAR ISTO R
NOISE FILTER
NF
MF
MC
SYMBOL
NAME
NR64
FUSE (T2AL 250V)
CURRENT TRANSFORMER
SMOOTHING CAPACITOR
CURRENT TRANSFORMER
DEFROST THERMISTOR
DISCHARGE TEMPERATURE THERMISTOR
RESISTOR
POWER FACTOR CONTROLLER
RESISTOR
RESISTOR
PFC
R64A,B
FUSE (T1AL 250V)
FUSE (T3.15AL 250V)
RT62
RT61
RS1~4
R937A, B
EXPANSION VALVE COIL
INTELLIGENT POWER MODULE
REACTOR
INTELLIGENT POWER MODULE
F911
IPM
HC930
L
LEV
F64
F801
CT61
CT1, 2
CB1~3
SYMBOL
7
7
MUZ-GB50VA-
E3
8
7
REFRIGERANT SYSTEM DIAGRAM
MUZ-GB50VA-
Refrigerant pipe ø12.7
(with heat insulator)
Flared connection
Flared connection
Refrigerant pipe ø6.35
(with heat insulator)
E1
Muffler
4-way valve
Stop valve
(with service port)
Receiver
Stop valve
Strainer
#100
#100
Discharge
temperature
thermistor
RT62
Compressor
Capillary tube
ø3.6×ø2.4×50
LEV
Strainer
#100
Defrost
thermistor
RT61
Outdoor
heat
exchanger
Outdoor heat
exchanger
temperature
thermistor
RT68
R.V. coil
OFF
ON
Ambient
temperature
thermistor
RT65
Refrigerant flow in cooling
Refrigerant flow in heating
Unit:mm
MUZ-GB50VAMUZ-GB50VA-
Refrigerant pipe ø12.7
(with heat insulator)
Flared connection
Flared connection
Refrigerant pipe
(with heat insulator)
E1
E2
ø
Stop valve
6.35
Capillary tube
ø1.8×ø0.6×1000
4-way valve
Stop valve
(with service port)
Receiver
Strainer
#100
Oil separator
Compressor
Capillary tube
ø3.6×ø2.4×50
Strainer
LEV
#100
Discharge
temperature
thermistor
RT62
Strainer
#100
Defrost
thermistor
RT61
Refrigerant flow in cooling
Refrigerant flow in heating
Outdoor
heat
exchanger
Outdoor
heat
exchanger
temperature
thermistor
RT68
R.V. coil
heating ON
cooling OFF
Ambient
temperature
thermistor
RT65
Unit:mm
9
MUZ-GB50VA-
Refrigerant pipe ø12.7
(with heat insulator)
Flared connection
E3
Muffler
4-way valve
Stop valve
(with service port)
#100
Discharge
temperature
thermistor
RT62
Defrost
thermistor
RT61
Outdoor
heat
exchanger
Ambient
temperature
thermistor
RT65
Unit:mm
Flared connection
Refrigerant pipe ø6.35
(with heat insulator)
Receiver
Stop valve
(with strainer)
Compressor
Capillary tube
ø3.6×ø2.4×50
LEV
Strainer
#100
Outdoor heat
exchanger
temperature
thermistor
RT68
R.V. coil
OFF
ON
Refrigerant flow in cooling
Refrigerant flow in heating
MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE
Refrigerant piping : m
Max. Length
A
Max. Height difference
B
MUZ-GB50VA 30 15 12.7 6.35
Piping size O.D : mm
Gas Liquid
Indoor
unit
Max. Height
difference
B
Max. Length
A
Outdoor unit
ADDITIONAL REFRIGERANT CHARGE (R410A : g)
Model
MUZ-GB50VA 1,500
Outdoor unit
precharged
7 m 10 m 15 m 20 m 25 m 30 m
0 60 160 260 360 460
NOTE : Refrigerant piping exceeding 7 m requires additional refrigerant charge according to the calculation.
Refrigerant piping length (one way)
Calculation : X g = 20 g/m × (Refrigerant piping length (m) - 7)
10
PERFORMANCE CURVES8
MUZ-GB50VA
The standard specifications apply only to the operation of the air conditioner under normal conditions. Since operating condi-
tions 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 ~ 264 V, 50 Hz
(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]
(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]
(7) Total input : W
Indoor air wet/dry-bulb temperature difference on the left side of the following chart 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. 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 wet and 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.
}
}
Cooling
Heating
INDOOR UNIT
Wet and dry-bulb
thermometers
8-1. CAPACITY AND INPUT CURVES
14.1
12.9
11.8
10.7
9.6
8.6
difference (°C)
7.6
Indoor air Wet-bulb temperature
1.5
Indoor intake air Wet-bulb
1.4
temperature(
1.3
1.2
1.1
1.0
Capacity correction factors
0.9
-10-5 0 5 1015202530354043
Outdoor intake air Dry-bulb temperature(
Cooling capacity
°C
)
OUTDOOR UNIT
Wet and dry-bulb
thermometers
26
24
22
20
18
°C
)
at Rated frequency
MUZ-GB50VA
11
11.8
10.7
difference (°C)
Indoor air Wet-bulb temperature
1.3
1.2
1.1
9.6
8.6
1.0
0.9
7.6
0.8
6.6
Input correction factors
at Rated frequency
MUZ-GB50VA
Total input (Cooling)
26
Indoor intake air Wet-bulb
temperature(°C)
-10-5 0 5 10152025303540
Outdoor intake air Dry-bulb temperature (
°C
)
24
22
20
18
43
33.6
31.0
28.4
25.8
23.3
20.7
18.1
15.5
difference (°C)
12.9
Indoor air Dry-bulb temperature
10.3
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
Capacity correction factor
0.4
-15 -10 -5 0 5 10 15
at Rated frequency
MUZ-GB50VA
Heating capacity
)
°C
Indoor intake air Dry-bulb temperature (
Outdoor intake air Wet-bulb temperature (°C)
15
26
1.3
20
1.2
1.1
1.0
0.9
0.8
0.7
0.6
Input correction factor
0.5
0.4
-15 -10 -5 0 5 10 15
Indoor intake air Dry-bulb temperature (
Outdoor intake air Wet-bulb temperature (°C)
Total input(Heating)
)
°C
NOTE : The above broken lines are for the heating operation without any frost and defrost operation.
8-2. CAPACITY AND INPUT CORRECTION BY OPERATIONAL FREQUENCY OF COMPRESSOR
Correction of Cooling capacity
1.5
1.0
0.5
Capacity correction factors
0.0
0 50 100 150
The operational frequency
of compressor (Hz)
Correction of Cooling total input
1.5
1.5
1.0
1.0
0.5
0.5
Input correction factors
0.0
0.0
0 50 100 150
0 50 100 150
The operational frequency
of compressor (Hz)
Correction of Heating capacity
1.5
1.0
0.5
Capacity correction factors
0.0
0 50 100 150
The operational frequency
of compressor (Hz)
Correction of
2.0
1.5
1.0
0.5
Input correction factors
0.0
0 50 100 150
The operational frequency
of compressor (Hz)
26
20
15
Heating total input
8-3. TEST RUN OPERATION (How to operate fixed-frequency operation)
1. Press EMERGENCY OPERATION switch to start COOL or HEAT mode (COOL : Press once, HEAT : Press twice).
2. Test run operation starts and continues to operate for 30 minutes.
3. Compressor operates at rated frequency in COOL mode or 58 Hz 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 EMERGENCY OPERATION switch or any button on
remote controller.
12
8-4. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
COOL operation
Both indoor and outdoor unit are under the same temperature/
humidity condition.
Operation : TEST RUN OPERATION (Refer to 8-3.)
MUZ-GB50VA
(kgf/ [Gauge])
10
9
8
7
Outdoor low pressure
6
5
(MPa [Gauge])
1.0
0.9
0.8
0.7
0.6
0.5
15 2050256030
18 32
Ambient temperature(°C)
Ambient humidity(%)
35(°C)
70 (%)
8
7
6
5
Outdoor unit current(A)
4
15 2050256030
18 32
Ambient temperature(°C)
Ambient humidity(%)
70 (%)
35(°C)
Dry-bulb temperature (°C) Relative humidity (%)
20 50
25 60
30 70
NOTE: The unit of pressure has been changed to MPa based on the international system of units (SI unit system).
The conversion factor is: 1 (MPa [Gauge] = 10.2 (Kgf/cm2 [Gauge])
HEAT operation
Condition :
Dry bulb temperature (°C) 20.0 2 7 15 20.0
Wet bulb temperature (°C) 14.5 1 6 12 14.5
Operation : TEST RUN OPERATION (Refer to 8-3.)
8
Indoor Outdoor
7
6
5
Outdoor unit current (A)
4
0 5 10 15 20 25
2
Ambient temperature(°C)
13
PERFORMANCE DATA COOL operation at Rated frequency
MSZ-GB50VA : MUZ-GB50VA
CAPACITY : 5.0 kW SHF : 0.69 INPUT : 1650 W
INDOOR
DB (°C)
INDOOR
WB (°C)
21 18 5.88 3.00 0.51 1320 5.63 2.87 0.51 1386 5.40 2.75 0.51 1452 5.20 2.65 0.51 1518
21 20 6.13 2.39 0.39 1386 5.88 2.29 0.39 1469 5.70 2.22 0.39 1502 5.50 2.15 0.39 1568
22 18 5.88 3.23 0.55 1320 5.63 3.09 0.55 1386 5.40 2.97 0.55 1452 5.20 2.86 0.55 1518
22 20 6.13 2.63 0.43 1386 5.88 2.53 0.43 1469 5.70 2.45 0.43 1502 5.50 2.37 0.43 1568
22 22 6.38 1.98 0.31 1436 6.15 1.91 0.31 1526 6.00 1.86 0.31 1568 5.75 1.78 0.31 1634
23 18 5.88 3.47 0.59 1320 5.63 3.32 0.59 1386 5.40 3.19 0.59 1452 5.20 3.07 0.59 1518
23 20 6.13 2.88 0.47 1386 5.88 2.76 0.47 1469 5.70 2.68 0.47 1502 5.50 2.59 0.47 1568
23 22 6.38 2.23 0.35 1436 6.15 2.15 0.35 1526 6.00 2.10 0.35 1568 5.75 2.01 0.35 1634
24 18 5.88 3.70 0.63 1320 5.63 3.54 0.63 1386 5.40 3.40 0.63 1452 5.20 3.28 0.63 1518
24 20 6.13 3.12 0.51 1386 5.88 3.00 0.51 1469 5.70 2.91 0.51 1502 5.50 2.81 0.51 1568
24 22 6.38 2.49 0.39 1436 6.15 2.40 0.39 1526 6.00 2.34 0.39 1568 5.75 2.24 0.39 1634
24 24 6.70 1.81 0.27 1502 6.45 1.74 0.27 1584 6.30 1.70 0.27 1634 6.10 1.65 0.27 1716
25 18 5.88 3.94 0.67 1320 5.63 3.77 0.67 1386 5.40 3.62 0.67 1452 5.20 3.48 0.67 1518
25 20 6.13 3.37 0.55 1386 5.88 3.23 0.55 1469 5.70 3.14 0.55 1502 5.50 3.03 0.55 1568
25 22 6.38 2.74 0.43 1436 6.15 2.64 0.43 1526 6.00 2.58 0.43 1568 5.75 2.47 0.43 1634
25 24 6.70 2.08 0.31 1502 6.45 2.00 0.31 1584 6.30 1.95 0.31 1634 6.10 1.89 0.31 1716
26 18 5.88 4.17 0.71 1320 5.63 3.99 0.71 1386 5.40 3.83 0.71 1452 5.20 3.69 0.71 1518
26 20 6.13 3.61 0.59 1386 5.88 3.47 0.59 1469 5.70 3.36 0.59 1502 5.50 3.25 0.59 1568
26 22 6.38 3.00 0.47 1436 6.15 2.89 0.47 1526 6.00 2.82 0.47 1568 5.75 2.70 0.47 1634
26 24 6.70 2.35 0.35 1502 6.45 2.26 0.35 1584 6.30 2.21 0.35 1634 6.10 2.14 0.35 1716
26 26 6.90 1.59 0.23 1584 6.70 1.54 0.23 1667 6.60 1.52 0.23 1716 6.40 1.47 0.23 1766
27 18 5.88 4.41 0.75 1320 5.63 4.22 0.75 1386 5.40 4.05 0.75 1452 5.20 3.90 0.75 1518
27 20 6.13 3.86 0.63 1386 5.88 3.70 0.63 1469 5.70 3.59 0.63 1502 5.50 3.47 0.63 1568
27 22 6.38 3.25 0.51 1436 6.15 3.14 0.51 1526 6.00 3.06 0.51 1568 5.75 2.93 0.51 1634
27 24 6.70 2.61 0.39 1502 6.45 2.52 0.39 1584 6.30 2.46 0.39 1634 6.10 2.38 0.39 1716
27 26 6.90 1.86 0.27 1584 6.70 1.81 0.27 1667 6.60 1.78 0.27 1716 6.40 1.73 0.27 1766
28 18 5.88 4.64 0.79 1320 5.63 4.44 0.79 1386 5.40 4.27 0.79 1452 5.20 4.11 0.79 1518
28 20 6.13 4.10 0.67 1386 5.88 3.94 0.67 1469 5.70 3.82 0.67 1502 5.50 3.69 0.67 1568
28 22 6.38 3.51 0.55 1436 6.15 3.38 0.55 1526 6.00 3.30 0.55 1568 5.75 3.16 0.55 1634
28 24 6.70 2.88 0.43 1502 6.45 2.77 0.43 1584 6.30 2.71 0.43 1634 6.10 2.62 0.43 1716
28 26 6.90 2.14 0.31 1584 6.70 2.08 0.31 1667 6.60 2.05 0.31 1716 6.40 1.98 0.31 1766
29 18 5.88 4.88 0.83 1320 5.63 4.67 0.83 1386 5.40 4.48 0.83 1452 5.20 4.32 0.83 1518
29 20 6.13 4.35 0.71 1386 5.88 4.17 0.71 1469 5.70 4.05 0.71 1502 5.50 3.91 0.71 1568
29 22 6.38 3.76 0.59 1436 6.15 3.63 0.59 1526 6.00 3.54 0.59 1568 5.75 3.39 0.59 1634
29 24 6.70 3.15 0.47 1502 6.45 3.03 0.47 1584 6.30 2.96 0.47 1634 6.10 2.87 0.47 1716
29 26 6.90 2.42 0.35 1584 6.70 2.35 0.35 1667 6.60 2.31 0.35 1716 6.40 2.24 0.35 1766
30 18 5.88 5.11 0.87 1320 5.63 4.89 0.87 1386 5.40 4.70 0.87 1452 5.20 4.52 0.87 1518
30 20 6.13 4.59 0.75 1386 5.88 4.41 0.75 1469 5.70 4.28 0.75 1502 5.50 4.13 0.75 1568
30 22 6.38 4.02 0.63 1436 6.15 3.87 0.63 1526 6.00 3.78 0.63 1568 5.75 3.62 0.63 1634
30 24 6.70 3.42 0.51 1502 6.45 3.29 0.51 1584 6.30 3.21 0.51 1634 6.10 3.11 0.51 1716
30 26 6.90 2.69 0.39 1584 6.70 2.61 0.39 1667 6.60 2.57 0.39 1716 6.40 2.50 0.39 1766
31 18 5.88 5.35 0.91 1320 5.63 5.12 0.91 1386 5.40 4.91 0.91 1452 5.20 4.73 0.91 1518
31 20 6.13 4.84 0.79 1386 5.88 4.64 0.79 1469 5.70 4.50 0.79 1502 5.50 4.35 0.79 1568
31 22 6.38 4.27 0.67 1436 6.15 4.12 0.67 1526 6.00 4.02 0.67 1568 5.75 3.85 0.67 1634
31 24 6.70 3.69 0.55 1502 6.45 3.55 0.55 1584 6.30 3.47 0.55 1634 6.10 3.36 0.55 1716
31 26 6.90 2.97 0.43 1584 6.70 2.88 0.43 1667 6.60 2.84 0.43 1716 6.40 2.75 0.43 1766
32 18 5.88 5.58 0.95 1320 5.63 5.34 0.95 1386 5.40 5.13 0.95 1452 5.20 4.94 0.95 1518
32 20 6.13 5.08 0.83 1386 5.88 4.88 0.83 1469 5.70 4.73 0.83 1502 5.50 4.57 0.83 1568
32 22 6.38 4.53 0.71 1436 6.15 4.37 0.71 1526 6.00 4.26 0.71 1568 5.75 4.08 0.71 1634
32 24 6.70 3.95 0.59 1502 6.45 3.81 0.59 1584 6.30 3.72 0.59 1634 6.10 3.60 0.59 1716
32 26 6.90 3.24 0.47 1584 6.70 3.15 0.47 1667 6.60 3.10 0.47 1716 6.40 3.01 0.47 1766
Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
21 25 27 30
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
OUTDOOR DB (°C)
14
PERFORMANCE DATA COOL operation at Rated frequency
MSZ-GB50VA : MUZ-GB50VA
CAPACITY : 5.0 kW SHF : 0.69 INPUT : 1650 W
INDOOR
DB (°C)
INDOOR
WB (°C)
21 18 4.90 2.50 0.51 1617 4.50 2.30 0.51 1716 4.30 2.19 0.51 1749
21 20 5.15 2.01 0.39 1683 4.80 1.87 0.39 1766 4.60 1.79 0.39 1815
22 18 4.90 2.70 0.55 1617 4.50 2.48 0.55 1716 4.30 2.37 0.55 1749
22 20 5.15 2.21 0.43 1683 4.80 2.06 0.43 1766 4.60 1.98 0.43 1815
22 22 5.45 1.69 0.31 1749 5.10 1.58 0.31 1848 4.90 1.52 0.31 1881
23 18 4.90 2.89 0.59 1617 4.50 2.66 0.59 1716 4.30 2.54 0.59 1749
23 20 5.15 2.42 0.47 1683 4.80 2.26 0.47 1766 4.60 2.16 0.47 1815
23 22 5.45 1.91 0.35 1749 5.10 1.79 0.35 1848 4.90 1.72 0.35 1881
24 18 4.90 3.09 0.63 1617 4.50 2.84 0.63 1716 4.30 2.71 0.63 1749
24 20 5.15 2.63 0.51 1683 4.80 2.45 0.51 1766 4.60 2.35 0.51 1815
24 22 5.45 2.13 0.39 1749 5.10 1.99 0.39 1848 4.90 1.91 0.39 1881
24 24 5.75 1.55 0.27 1815 5.40 1.46 0.27 1898 5.25 1.42 0.27 1947
25 18 4.90 3.28 0.67 1617 4.50 3.02 0.67 1716 4.30 2.88 0.67 1749
25 20 5.15 2.83 0.55 1683 4.80 2.64 0.55 1766 4.60 2.53 0.55 1815
25 22 5.45 2.34 0.43 1749 5.10 2.19 0.43 1848 4.90 2.11 0.43 1881
25 24 5.75 1.78 0.31 1815 5.40 1.67 0.31 1898 5.25 1.31 0.25 1947
26 18 4.90 3.48 0.71 1617 4.50 3.20 0.71 1716 4.30 3.05 0.71 1749
26 20 5.15 3.04 0.59 1683 4.80 2.83 0.59 1766 4.60 2.71 0.59 1815
26 22 5.45 2.56 0.47 1749 5.10 2.40 0.47 1848 4.90 2.30 0.47 1881
26 24 5.75 2.01 0.35 1815 5.40 1.89 0.35 1898 5.25 1.21 0.23 1947
26 26 6.05 1.39 0.23 1881 5.70 1.31 0.23 1964 5.50 1.27 0.23 2013
27 18 4.90 3.68 0.75 1617 4.50 3.38 0.75 1716 4.30 3.23 0.75 1749
27 20 5.15 3.24 0.63 1683 4.80 3.02 0.63 1766 4.60 2.90 0.63 1815
27 22 5.45 2.78 0.51 1749 5.10 2.60 0.51 1848 4.90 2.50 0.51 1881
27 24 5.75 2.24 0.39 1815 5.40 2.11 0.39 1898 5.25 1.10 0.21 1947
27 26 6.05 1.63 0.27 1881 5.70 1.54 0.27 1964 5.50 1.49 0.27 2013
28 18 4.90 3.87 0.79 1617 4.50 3.56 0.79 1716 4.30 3.40 0.79 1749
28 20 5.15 3.45 0.67 1683 4.80 3.22 0.67 1766 4.60 3.08 0.67 1815
28 22 5.45 3.00 0.55 1749 5.10 2.81 0.55 1848 4.90 2.70 0.55 1881
28 24 5.75 2.47 0.43 1815 5.40 2.32 0.43 1898 5.25 1.00 0.19 1947
28 26 6.05 1.88 0.31 1881 5.70 1.77 0.31 1964 5.50 1.71 0.31 2013
29 18 4.90 4.07 0.83 1617 4.50 3.74 0.83 1716 4.30 3.57 0.83 1749
29 20 5.15 3.66 0.71 1683 4.80 3.41 0.71 1766 4.60 3.27 0.71 1815
29 22 5.45 3.22 0.59 1749 5.10 3.01 0.59 1848 4.90 2.89 0.59 1881
29 24 5.75 2.70 0.47 1815 5.40 2.54 0.47 1898 5.25 0.89 0.17 1947
29 26 6.05 2.12 0.35 1881 5.70 2.00 0.35 1964 5.50 1.93 0.35 2013
30 18 4.90 4.26 0.87 1617 4.50 3.92 0.87 1716 4.30 3.74 0.87 1749
30 20 5.15 3.86 0.75 1683 4.80 3.60 0.75 1766 4.60 3.45 0.75 1815
30 22 5.45 3.43 0.63 1749 5.10 3.21 0.63 1848 4.90 3.09 0.63 1881
30 24 5.75 2.93 0.51 1815 5.40 2.75 0.51 1898 5.25 0.79 0.15 1947
30 26 6.05 2.36 0.39 1881 5.70 2.22 0.39 1964 5.50 2.15 0.39 2013
31 18 4.90 4.46 0.91 1617 4.50 4.10 0.91 1716 4.30 3.91 0.91 1749
31 20 5.15 4.07 0.79 1683 4.80 3.79 0.79 1766 4.60 3.63 0.79 1815
31 22 5.45 3.65 0.67 1749 5.10 3.42 0.67 1848 4.90 3.28 0.67 1881
31 24 5.75 3.16 0.55 1815 5.40 2.97 0.55 1898 5.25 0.68 0.13 1947
31 26 6.05 2.60 0.43 1881 5.70 2.45 0.43 1964 5.50 2.37 0.43 2013
32 18 4.90 4.66 0.95 1617 4.50 4.28 0.95 1716 4.30 4.09 0.95 1749
32 20 5.15 4.27 0.83 1683 4.80 3.98 0.83 1766 4.60 3.82 0.83 1815
32 22 5.45 3.87 0.71 1749 5.10 3.62 0.71 1848 4.90 3.48 0.71 1881
32 24 5.75 3.39 0.59 1815 5.40 3.19 0.59 1898 5.25 0.58 0.11 1947
32 26 6.05 2.84 0.47 1881 5.70 2.68 0.47 1964 5.50 2.59 0.47 2013
Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
35 40 43
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
OUTDOOR DB (°C)
15
PERFORMANCE DATA HEAT operation at Rated frequency
MSZ-GB50VA : MUZ-GB50VA
CAPACITY : 5.8 kW INPUT : 1700 W
INDOOR
DB (°C)
15 3.65 1105 4.41 1326 5.16 1496 5.92 1615 6.67 1717 7.37 1768 8.12 1802
21 3.48 1190 4.18 1411 4.93 1564 5.63 1683 6.38 1768 7.08 1819 7.80 1887
26 3.13 1275 3.89 1496 4.58 1649 5.34 1768 6.09 1853 6.79 1904 7.54 1955
-10 -5 0 5 10 15 20
Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT
NOTE Q : Total capacity (kW) INPUT : Total power input (W) DB : Dry-bulb temperature WB : Wet-bulb temperature
OUTDOOR WB (°C)
9
ACTUATOR CONTROL
MUZ-GB50VA
9-1. OUTDOOR FAN MOTOR CONTROL
The fan motor turns ON/OFF, interlocking with the compressor.
[ON] The fan motor turns ON 5 seconds before the compressor starts up.
[OFF] The 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 valve reverses for 5 seconds right before start-up of the compressor.
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
ON
OFF
OFF
<COOL>
5 seconds
<HEAT>
5 seconds
Compressor
R.V.coil
Outdoor fan
motor
ON
OFF
ON
OFF
ON
OFF
ON or OFF
ON or OFF
16
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