Mitsubishi Electric MXZ-24UV - E1 User manual

SERVICE MANUAL
CONTENTS
1. PART NAMES AND FUNCTIONS······················2
2. INDOOR/OUTDOOR
CORRESPONDENCE TABLE ···························3
3. INDOOR UNITS COMBINATION·······················4
4. SPECIFICATION·················································6
5. NOISE CRITERIA CURVES······························ 7
6. OUTLINES AND DIMENSIONS ························ 8
7. WIRING DIAGRAM ············································9
8. REFRIGERANT SYSTEM DIAGRAM··············10
9. PERFORMANCE CURVES······························11
10. MICROPROCESSOR CONTROL ····················17
11. TROUBLESHOOTING······································23
12. DISASSEMBLY INSTRUCTIONS·····················34
13. PARTS LIST······················································37
14. OPTIONAL PARTS ······················BACK COVER
Inverter-controlled multi system
Model
MXZ-24UV - E1
No. OB287
This manual describes technical data of the outdoor unit.
For the indoor unit refer to the service manuals No. OB229, OB227 REVISED EDITION-B, OB252, OB212,
OB239 and OC165 of corresponding models.
Model indication
SPLIT-TYPE, HEAT PUMPAIR CONDITIONER
OB287--1.qxp 10/9/01 3:29 PM Page 1

OUTDOOR UNIT Air inlet
Air outlet
(back and side)
Model indication
MXZ-24UV- E1
2
PART NAMES AND FUNCTIONS
1
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3
2INDOOR / OUTDOOR CORRESPONDENCE TABLE
❈There is no combination other than this table.
MXZ-24UV- E1
OUTDOOR UNIT
Combination of the connectable indoor units
07+07
07+09
07+12
07+18
09+09
09+12
09+18
12+12
12+18
18+18
07+07+07
07+07+09
07+07+12
07+07+18
07+09+09
07+09+12
07+09+18
09+09+09
09+09+12
NOTE: MCFH-13NV, SEH-1.6AR is equivalent to class 12 (12000BTU).
SEH-2AR is equivalent to class 18 (18000BTU).
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4
07
09
12
18
07+07
07+09
07+12
07+18
09+09
09+12
09+18
12+12
12+18
18+18
07+07+07
07+07+09
07+07+12
07+07+18
07+09+09
07+09+12
07+09+18
09+09+09
09+09+12
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
3.62
4.35
6.96
11.11
7.44
7.83
11.01
14.40
9.18
13.19
14.40
14.40
14.40
14.40
8.94
10.05
10.05
10.05
10.05
10.05
10.05
10.05
10.05
2.2
(0.9-2.7)
2.8
(0.9-3.2)
4.0
(0.9-4.5)
5.0
(0.9-5.4)
4.4
(1.8-5.4)
5.0
(1.8-5.8)
6.2
(1.8-6.7)
7.1
(1.8-7.6)
5.6
(1.8-6.2)
6.8
(1.8-7.4)
7.1
(1.8-7.6)
7.1
(1.8-7.6)
7.1
(1.8-7.6)
7.1
(1.8-7.6)
6.6
(2.4-8.1)
7.1
(2.4-8.5)
7.1
(2.4-8.5)
7.1
(2.4-8.5)
7.1
(2.4-8.5)
7.1
(2.4-8.5)
7.1
(2.4-8.5)
7.1
(2.4-8.5)
7.1
(2.4-8.5)
750
(260-930)
900
(260-1040)
1440
(260-1700)
2300
(260-2980)
1540
(580-1960)
1620
(580-2050)
2280
(580-2540)
2980
(580-3450)
1900
(580-2180)
2730
(580-3230)
2980
(580-3450)
2980
(580-3450)
2980
(580-3450)
2980
(580-3450)
1850
(700-3650)
2080
(700-4070)
2080
(700-4070)
2080
(700-4070)
2080
(700-4070)
2080
(700-4070)
2080
(700-4070)
2080
(700-4070)
2080
(700-4070)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2.2
2.8
3.4
3.8
2.55
3.15
3.55
2.37
3.0
—
—
—
—
2.2
2.8
4.0
4.95
2.8
4.0
4.55
3.55
3.95
3.55
2.2
2.15
1.85
1.65
2.55
2.2
2.0
2.37
2.05
2.2
2.8
4.0
5.0
2.2
2.2
2.2
2.15
2.8
2.8
2.55
3.55
3.15
3.55
2.2
2.15
1.85
1.65
2.0
1.75
1.55
2.37
2.05
Indoor units
combination Unit A Unit B Unit C
Cooling capacity (kw) Total Outdoor unit
power consumption
(w) Current
(A) Power
factor
(%)
NOTE: Electrical data is for outdoor unit only.
MXZ-24UV - E1
INDOOR UNITS COMBINATION
3
NOTE: MCFH-13NV, SEH-1.6AR is equivalent to class 12 (12000BTU).
SEH-2AR is equivalent to class 18 (18000BTU).
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5
NOTE: Electrical data is for outdoor unit only.
07
09
12
18
07+07
07+09
07+12
07+18
09+09
09+12
09+18
12+12
12+18
18+18
07+07+07
07+07+09
07+07+12
07+07+18
07+09+09
07+09+12
07+09+18
09+09+09
09+09+12
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
5.46
6.38
9.23
11.11
9.32
9.90
12.32
13.19
11.35
12.75
13.19
13.19
13.19
13.19
11.69
12.08
12.08
12.08
12.08
12.08
12.08
12.08
12.08
3.2
(0.9-4.1)
4.0
(0.9-4.8)
6.0
(0.9-7.2)
7.1
(0.9-7.8)
6.4
(1.8-7.2)
7.2
(1.8-8.7)
8.6
(1.8-10.6)
9.0
(1.8-10.9)
8.0
(1.8-10.1)
8.8
(1.8-10.8)
9.0
(1.8-10.9)
9.0
(1.8-10.9)
9.0
(1.8-10.9)
9.0
(1.8-10.9)
8.6
(2.1-10.6)
9.0
(2.1-10.9)
9.0
(2.1-10.9)
9.0
(2.1-10.9)
9.0
(2.1-10.9)
9.0
(2.1-10.9)
9.0
(2.1-10.9)
9.0
(2.1-10.9)
9.0
(2.1-10.9)
1130
(270-1600)
1320
(270-1700)
1900
(270-2570)
2300
(270-2830)
1930
(470-2300)
2050
(470-2680)
2550
(470-3800)
2730
(470-3880)
2350
(470-3560)
2640
(470-3850)
2730
(470-3880)
2730
(470-3880)
2730
(470-3880)
2730
(470-3880)
2420
(520-3000)
2500
(520-3180)
2500
(520-3180)
2500
(520-3180)
2500
(520-3180)
2500
(520-3180)
2500
(520-3180)
2500
(520-3180)
2500
(520-3180)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2.87
3.5
4.4
4.7
3.2
4.1
4.5
3.0
3.9
—
—
—
—
3.2
4.0
5.4
6.2
4.0
5.3
5.75
4.5
4.9
4.5
2.87
2.75
2.3
2.15
3.2
2.7
2.5
3.0
2.55
3.2
4.0
6.0
7.1
3.2
3.2
3.2
2.8
4.0
3.5
3.25
4.5
4.1
4.5
2.87
2.75
2.3
2.15
2.6
2.2
2.0
3.0
2.55
Indoor units
combination Unit A Unit B Unit C
Heating capacity (kw) Total Outdoor unit
power consumption
(w) Current
(A) Power
factor
(%)
NOTE: MCFH-13NV, SEH-1.6AR is equivalent to class 12 (12000BTU).
SEH-2AR is equivalent to class 18 (18000BTU).
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6
4SPECIFICATION
Outdoor model
Indoor units number
Indoor units total capacity (Connectable)
Indoor units total capacity (Simultaneous operation)
Piping total length
Connecting pipe length
Height difference (Indoor ~ Outdoor)
Height difference (Indoor ~ Indoor)
Function
Capacity
Dehumidification
Outdoor air flow
Power outlet
Running current
Power input
Auxiliary heater
Crankcase heater
Power factor
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding
resistance(at20:)
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Sound level (High)
Fan speed (High)
Fan speed regulator
Refrigerant filling
capacity(R22)
Refrigerating oil (Model)
Thermistor RT61
Thermistor RT62
Thermistor RT63
Thermistor RT65
Thermistor RT66,67
Thermistor RT68
kW
R/h
K/h
A
A
W
A(kW)
W
%
A
A
A
W
"


"
mm
kg
dB
rpm
kg
cc
k"
k"
k"
k"
k"
k"

Compressor Electrical
data
Fan motor
Special remarks
Capacity System
Coefficient of performance(C.O.P)
Outdoor unit power supply
MXZ-24UV - E1
Single phase
230V,50Hz
2 to 3
✽2 Total model name 34 (3 indoor units) / 36 (2 indoor units)
✽2 Total model name 34 (3 indoor units) / 36 (2 indoor units)
Max. 50
Max. 25
10
10
2520
25
—
—
90.0
12.08
0.6
THV247FBA (ROTARY)
2000
U-V 0.61
V-W 0.61 W-U 0.61
RA6V60-BA
WHT-BLK 78.7 BLK-YLW 26.9
YLW-BLU 11.7 BLU-RED 83.6
900o900o320 (+35)
79
550
3
3.9
870 (MS-56)
13.4 (at 100:)
10.0 (at 25:)
10.0 (at 25:)
17.0 (at 50:)
10.0 (at 25:)
10.0 (at 25:)
Cooling
7.1 (0.9~8.5)
—
10.05
2080 (260~4070)
8.7
2.68
46
Heating
9.0 (0.9~10.9)
—
12.08
2500 (270~3180)
9.1
3.35
47
TEST CONDITIONS COOLING INDOOR DB27.0°C WB19.0°C
OUTDOOR DB35.0°C WB24.0°C
HEATING INDOOR DB20.0°C
OUTDOOR DB 7.0°C WB 6.0°C
NOTE: Test conditions are based on ISO5151 (Refrigerant piping length (one way): 5m)
✽1 Electrical data is for only outdoor unit.
✽2 However, please refer to “INDOOR/OUTDOOR CORRESPONDENCE TABLE” of page 3 for the combination.
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7
NOISE CRITERIA CURVES5
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB = 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions.
Cooling :DB35: WB24:
Heating :DB 7:WB 6:
COOL
NOTCH
HEAT
46
SPL(dB(A))
47
LINE
MXZ-24UV - E1
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8
OUTLINES AND DIMENSIONS
6
MXZ-24UV -E1
Unit: mm
OUTDOOR UNIT
23
10 35320 900
88
460
50
900
250
381.8
531.3
317 23
33
Handle for
moving Air in
Indoor and
outdoor
connect wiring
23✕45 hole
Air in
C unit connection
B unit connection
A unit connection
6.35 (flared) 1/4
Liquid pipe
12.7 (flared) 1/2 (A , B unit)
9.52 (flared) 3/8 (C unit)
[
[
[
1.Installation space
2.Service space
More than
100
More than 200
More than 100
More than 500
More than 500
More than
100 More than
100
More than
350
Base bollt length
Less than
25
More than
350
More than
350
Service space
Air in
2-U-shape notched holes
(Base bolt M10)
(Base bolt M10)
Air in
Air out
200 200
387 355
27 40
(16) (16)
500
Veranda Base
Rubber cushion
More than 500
Note : Leave front and both sides
clearance fully. Note : Obsacle on front and rear sid only. The unit can be used by attaching an optional
outdoor outlet guide (MAC-855SG)
(but both sides and the top are opend.)
Note : Leave front and overhead
clearance fully.
Note : Leave front, overhead and
both clearance fully.
2-12 ✕ 36 Oval hole
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9
WIRING DIAGRAM
7
POWER SUPPLY
~/N 230V
50Hz
INDOOR
UNIT (A)
CIRCUIT BRAKER
TB1
TB2
TB3
TB4
BLU
RED
TB5
X64
GRN/YLW
GRN
CN720
CN601
0
4
X64
LD62
CN913
CN791
CN901
6 4
2
CN902
CN851 CN852
MF61
21S4
1 2
2 1
2 1
1 2
1 2
3 4
1 2 3 4 5 6
1 2 3 4 5 6 7
1 2 3 4 5 6
C65
LD63
LD64 LDB
LDB
LD61
LDE
L61
F911
SSR61
X63 X62 X61
1
6
L
N
3
N
INDOOR
UNIT (B) BLU
ORN
CN602
1 2
3
3
N
INDOOR
UNIT (C) BLU
YLW
CN603
1 2
N
BLK
BRN
GRY
BLK
BLK WHT
YLW
RED
RED
RED BRN BLU ORN YLW WHT
ORN WHT BLK BLU YLW
RED
ORN ORN RED RED
YLW
YLW
BLK
BLK
ORN
ORN
BRN
GRY
X65
X66 X67
63H2
CN552
CN553
BLK
RELAY
P.C. BOARD
WHT WHT
RED WHT
V
U W
AKL
WHT
NOISE FILTER
P.C.BOARD
RED DS61 DS62
C61
CT
61
C63 C62
++
–
+
–
+
–
-
BLKREDR
BLU
LEV A
CN792
1 2 3 4 5 6
RED BRN BLU ORN YLW WHT
LEV B
CN793
1 2 3 4 5 6
RED BRN BLU ORN YLW WHT
LEV C
CN722 CN663
63H1 RT63
CN662
1 2 3 4 5 6 7 81 2 1 23 4
RED RED BLK BLK
RT66 RT68
RT67
GRY GRY GRY GRY GRY GRY
CN661
CN705
7 6 5 4 3 2 1
CN515
1 2 3 4
4 3 2 1
CN801
CN501
TAB62 TAB63
T801
CT62
TAB66
TAB65
TAB64
I.P.M P.C. BOARD
F801
(1A)
CN704
CN514
CN554CN551
1 2 3 4 5 6 7 8
RT62
RT61
RT65
GRY GRY BLK BLK GRY GRY
ELECTRONIC CONTROL P.C. BOARD
MC
PE
(1A)
TO INDOOR UNIT CONNECTING 12V
SYMBOL
C61
C62,63
C65
CT61,62
DS61
DS62
F801
F911
L
L61
SYMBOL
LEV A~C
MC
MF61
R
RT61
RT62
RT63
RT65
RT66,67
RT68
NAME
POWER FACTOR CAPACITOR
SMOOTHING CAPACITOR
OUTDOOR FAN CAPACITOR
CURRENT TRANSFORMER
DIODE MODULE
DIODE STACK
FUSE (1A)
FUSE (1A)
REACTOR
COMMON MODE CHOKE COIL
NAME
EXPANSION VALVE
COMPRESSOR
FAN MOTOR (INNER PROTECTOR)
RESISTOR
DISCHARGE TEMPERATURE THERMISTOR
DEFROST TEMPERATURE THERMISTOR
EVAPORATION TEMPERATURE THERMISTOR
FIN TEMPERATURE THERMISTOR
GUS PIPE TEMPERATURE THERMISTOR
GUS PIPE TEMPERATURE THERMISTOR
SYMBOL
SSR61
T801
TB1,2,3,4,5
X61,62,63
X64,65
X66,67
21S4
63H1
63H2
NAME
SOLENOID COIL RELAY
TRANSFORMER
TERMINAL BLOCK
FAN MOTOR RELAY
RELAY
RELAY
R.V. COIL
HIGH PRESSURE SWITCH
HIGH PRESSURE SWITCH
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.Symboles below indicate. : Terminal block : Connector
MODELS MXZ-24UV- E1
OUTDOOR UNIT
SG79A845H01
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10
REFRIGERANT SYSTEM DIAGRAM
8
Unit:mm
MXZ-24UV -E1
Ball valve with
service port
Muffler
Ball valve with
service port
Distributor
Strainer
Strainer
LEV
Oil
separator
Compressor
High pressure
switch 1
Accumulator
Capillary tube
Reversing valve
Discharge
temperature
thermistor
Evaporation
temperature
thermistor
(RT67)
Defrost
thermistor
Strainer Distributor
Outdoor
heat
exchanger
High pressure
switch 2
Indoor unit
C
Unit C gas pipe temperature thermistor
[9.52
[6
Indoor unit
B
Unit B gas pipe temperature
thermistor [12
Indoor unit
A
Indoor unit
A
Strainer LEV [6
Indoor unit
B
Strainer LEV [6
Indoor unit
C
Unit A gas pipe
temperature thermistor
[12
[16 [16
[9.52
[16
Capillary tube
[2.5✕[0.6✕750
[2.5✕[0.6✕1000
Capillary tube
[4.0✕[2.4✕400
Capillary tube
Capillary tube
Capillary tube
[3.0✕[2.0✕200
[3.0✕[2.0✕200
[3.0✕[2.0✕200
Refrigerant flow in cooling
Refrigerant flow in heating
Reversing valve coil
heating ON
cooling OFF
●Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes,refer to the
tables below.
●When diameter of refrigerant pipe is different from that of outdoor unit union, use optional Different-diameter pipe.
For further information on Different-diameter pipe,see page BACK COVER.
Indoor unit
Extension pipe diameter
class Pipe diameter
Liquid 6.35(1/4) Liquid 6.35(1/4)
07/09 Gas 9.52(3/8) Gas 9.52(3/8)
Liquid 6.35(1/4) Liquid 6.35(1/4)
12 Gas 12.7(1/2) Gas 12.7(1/2)
Liquid 6.35(1/4) Liquid 6.35(1/4)
18 Gas 15.88(5/8) Gas 15.88(5/8)
Outdoor unit union diameter
For Liquid 6.35(1/4)
Indoor unit A Gas 12.7(1/2)
Liquid 6.35(1/4)
Indoor unit B Gas 12.7(1/2)
Liquid 6.35(1/4)
Indoor unit C Gas 9.52(3/8)
Unit : mm (inch)
Piping length each indoor unit (a, b, c) 25m
Total piping length (a+b+c) 50m
Height difference between units (H) 10m
Bending point for each unit 25
Total bending point 50
❋It does not matter which unit is higher.
a
b
c
Outdoor
unit
Indoor
units
H
H
H
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