Mitsubishi Electric MSC-07RV User manual

SERVICE MANUAL
SPLIT-TYPE,AIR CONDITIONERS
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················4
3. INDOOR/OUTDOOR
CORRESPONDENCE TABLE ···························7
4. INDOOR UNITS COMBINATION·······················8
5. SPECIFICATION···············································13
6. NOISE CRITERIA CURVES···························· 19
7. OUTLINES AND DIMENSIONS ······················ 22
8. WIRING DIAGRAM ··········································28
9. REFRIGERANT SYSTEM DIAGRAM··············35
10. PERFORMANCE CURVES······························46
11. MICROPROCESSOR CONTROL···················102
12. SERVICE FUNCTIONS···································120
13. TROUBLESHOOTING····································122
14. DISASSEMBLY INSTRUCTIONS···················148
15. PARTS LIST····················································166
16. OPTIONAL PARTS·········································184
Wireless type
Models
MSC-07RV - (WH) · MU-07RV -
MSC-09RV - (WH) · MU-09RV -
MSC-12RV - (WH) · MU-12RV -
MSC-07RV - (WH) · MUH-07RV -
MSC-09RV - (WH) · MUH-09RV -
MSC-12RV - (WH) · MUH-12RV -
Multi system type
MSC-07RV - (WH) · MUX-10RV -
MSC-09RV - (WH) · MUX-18RV -
MSC-12RV - (WH) · MUX-24RV -
Inverter controlled multi system type
· MXZ-18RV -
· MXZ-32RV -
E1
E1
E1E1
E1E1
E1E1
E1E1
E1E1
E1E1
E1E1
E1E1
E1E1
No. OB227
REVISED EDITION-B
MSC-07RV -
MSC-09RV -
MSC-12RV - E1
E1
E1
Revision:
• MUX-10/18/24RV -has been added.
• MXZ-18/32RV -has been added.
• Noise criteria curves has been added.
• Performance data has been added.
• Specification has been partially modified.
• Refrigerant system diagram has been partially
modified.
• Please void OB227 REVISED EDITION-A
E1
E1
NOTE: (Only MXZ-32RV -)
This manual describes technical data of MSC
type indoor unit .
For other indoor unit refer to the service manuals
No. OB229 REVISED EDITION-A of correspond-
ing models.
E1

2
TECHNICAL CHANGES
MS-07NV22-
MSH-07NV22-
MSX-05NV--
MS-09NV22-
MSH-09NV22-
MSX-09NV--
MS-12NV22-
MSH-12NV22-
MSX-12NV--
1. Switch SW2 has added on the indoor electronic control P.C. board.
•Indoor unit model has changed. Indoor units for COOL only type (MU and MUX) and COOL and HEAT type (MUH and
MXZ)are common specifications. Set switch SW2-2
according to the type of outdoor unit.
•Change switch SW2-1 for setting AUTO RESTART FUNCTION ON/OFF.
E1
E1
E1
E1
E1
E1
E1
E1
E1
1
}➔MSC-07RV - E1
}➔ MSC-09RV - E1
}➔ MSC-12RV - E1
1 2
SW2
1 2
AUTO RESTART
FUNCTION :OFF
AUTO RESTART
FUNCTION :ON
OUTDOOR UNIT
MU & MUX type
OUTDOOR UNIT
MUH & MXZ type
Set of switch SW2
1 2
SW2
1 2
When the units are shipped from the factory,
switch SW2 is as follows.
SW2-1: AUTO RESTART FUNCTION OFF
SW2-2: MUH type
2. SLEEP MODE function has been removed.
3. ECONO COOL operation has been added.
4. SWING button is removed, but SWING MODE function is available by VANE CONTROL button.
MU-07NV - ➔MU-07RV -
MUH-07NV - ➔MUH-07RV -
MU-09NV - ➔MU-09RV -
MUH-09NV - ➔MUH-09RV -
MU-12NV - ➔MU-12RV -
MUH-12NV - ➔MUH-12RV -
1. Outdoor model has changed.
E1E2
E1E2
E1E2
E1E2
E1E2
E1E2

3
MUX-10NV - ➔MUX-10RV -
1.Outdoor model name has changed.
2 Refrigerant filling capacity has changed. (1.15kg ➔1.0kg)
MUX-18NV - ➔MUX-18RV -
1.Outdoor model name has changed.
2 Capillary tube has changed.
([3.0O[1.4O1000 ➔[3.0O[1.4O1100)
([3.0O[1.4O600 ➔[3.0O[1.6O1100)
([3.0O[1.4O150 ➔[3.0O[1.6O300)
MUX-24NV - ➔MUX-24RV -
1.Outdoor model name has changed.
2 Refrigerant filling capacity has changed. (1.15+1.15kg ➔1.0+1.0kg))
MXZ-18NV - ➔MXZ-18RV -
1.Outdoor model name has changed.
2.Possibly connected indoor units combination was changed.
(MSH-09NV(2) - O2 ➔MSC-09RV - O2)
(MSH-07NV(2) - + MSH-12NV(2) - ➔MSC-07RV - + MSC-12RV - )
MXZ-32NV - ➔MXZ-32RV -
1.Outdoor model name has changed.
2.Possibly connected indoor units were changed.
(MSH-07NV(2) - ➔MSC-07RV - )
(MSH-09NV(2) - ➔MSC-09RV - )
(MSH-12NV(2) - ➔MSC-12RV - )
(MSH-18NV - ➔MSH-18NV - )
3.Control P.C. board has changed.
4.Compressor frequency controll has partly changed.
E4E3
E1E2
E1E2
E1E2
E1E2
E1E1E2E2
E1E2
E1E2
E1E1
E1E1
E1E1

4
PART NAMES AND FUNCTIONS
2
INDOOR UNIT
MSC-07RV -
MSC-09RV -
MSC-12RV - E1
E1
E1
Emergency operation switch
Operation section
Horizontal vane
Air filter
Deodorizing filter
(gray sponge type)
Vertical vanes
Air inlet
Grille
Remote control
receiving section
Remote controller
Display section
(when the front grille is open)
Operation indicator lamp
Receiving section
Air cleaning filter
(white bellows type)
Front panel
Air inlet
Piping
Drain hose
Air outlet
Drain outlet
(back and side)
OUTDOOR UNIT
MU-07RV -
MU-09RV -
MU-12RV - E1
E1
E1 MUH-07RV -
MUH-09RV -
MUH-12RV - E1
E1
E1

5
OUTDOOR UNIT
MUX-10RV- E1
MUX-24RV- E1
Air inlet
(back and side)
Piping
Drainage hose
Air outlet
Drain outlet
Air inlet
Air outlet
(back and side)
Model indication
Air inlet
Piping
Air outlet
Drain outlet
Drainage hose
(back and side)
MXZ-18RV- E1
MXZ-32RV- E1
MUX-18RV- E1

6
Signal transmitting section
Operation display section
OPERATE /STOP
(ON /OFF)button
OPERATION SELECT button
FAN SPEED CONTROL button
ECONO COOL button
ON-TIMER button
CLOCK SET button
HR. button
MIN. button
(TIME SET button)
TEMPERATURE buttons
VANE CONTROL button
OFF-TIMER button
RESET button
ON/OFF TOO
WARM TOO
COOL
HR. MIN.
CLOCK
RESET
CLOCK
6 00 1 1 00
MODE
FAN VANE
START STOP
ECONO COOL
AM PM
I FEELCOOL DRY FAN
MU-07RV -
MU-09RV -
MU-12RV -
MUX-10RV -
MUX-18RV -
MUX-24RV - E1
E1
E1
E1
E1
E1
MUH-07RV -
MUH-09RV -
MUH-12RV -
MXZ-18RV -
MXZ-32RV - E1
E1
E1
E1
E1
Signal transmitting section
Operation display section
OPERATE /STOP
(ON /OFF)button
OPERATION SELECT button
FAN SPEED CONTROL button
ON-TIMER button
CLOCK SET button
HR. button
MIN. button
(TIME SET button)
TEMPERATURE buttons
VANE CONTROL button
OFF-TIMER button
RESET button
ON/OFF TOO
WARM TOO
COOL
HR. MIN.
CLOCK
RESET
CLOCK
MODE
FAN VANE
START STOP
ECONO COOL button ECONO COOL
I FEELCOOL DRY HEAT
6 00 1 1 00
AM PM
WThe remote controller is packed with the outdoor unit (MU& MUH type).
WThe remote controller is packed with the outdoor unit (MUH& MXZ type).

7
3INDOOR / OUTDOOR CORRESPONDENCE TABLE
❈There is no combination other than this table.
MXZ-32RV- E1
MXZ-18RV- E1
OUTDOOR UNIT
Combination of the connectable indoor units
07+07+07
07+07+09
07+07+(12 or 13)
07+07+18
07+09+09
07+09+(12 or 13)
07+09+18
07+(12 or 13)+(12 or 13)
07+(12 or 13)+18
07+18+18
09+09+09
09+09+(12 or 13)
09+09+18
09+(12 or 13)+(12 or 13)
09+(12 or 13)+18
09+18+18
(12 or 13)+(12 or 13)+(12 or 13)
(12 or 13)+(12 or 13)+18
07+07+07+07
07+07+07+09
07+07+07+(12 or 13)
07+07+07+18
07+07+09+09
07+07+09+(12 or 13)
07+07+09+18
07+07+(12 or 13)+(12 or 13)
07+07+(12 or 13)+18
07+09+09+09
07+09+09+(12 or 13)
07+09+09+18
07+09+(12 or 13)+(12 or 13)
09+09+09+09
09+09+09+(12 or 13)
09+09+09+18
09+09+(12 or 13)+(12 or 13)
OUTDOOR UNIT
09+09
07+12
MXZ-18RV
MXZ-32RV

8
INDOOR UNITS COMBINATION
4
Outdoor unit
power consumption
(kW)
07
09
12
07+12
09+09
Indoor units
combination Unit B
Unit A
Cooling capacity (kW)
Total 220V 240V
Current
(A) Power
factor
(%)
2.3
2.5
3.4
2.0
2.25
-
-
-
2.5
2.25
2.3
(1.6 - 2.8)
2.5
(1.7 - 3.0)
3.4
(1.8 - 3.8)
4.5
(2.0 - 4.5)
4.5
(1.9 - 4.5)
1.02
(0.855 - 1.33)
1.05
(0.855 - 1.36)
1.45
(0.855 - 1.63)
2.00
(0.91- 2.00)
2.00
(0.91 - 2.00)
5.20
5.36
7.40
10.21
10.21
89 - 90
89 - 90
89 - 90
89 - 90
89 - 90
4.72
4.86
6.71
9.26
9.26
Outdoor unit
power consumption
(kW)
07
09
12
07+12
09+09
Indoor units
combination Unit B
Unit A
Heating capacity (kW)
Total 220V 240V
Current
(A) Power
factor
(%)
3.3
3.6
4.0
2.7
2.9
-
-
-
3.1
2.9
3.3
(2.0 - 4.0)
3.6
(2.0 - 4.5)
4.0
(2.2 - 4.7)
5.8
(2.1 - 5.8)
5.8
(2.0 - 5.8)
1.45
(0.69 - 1.60)
1.47
(0.69 - 1.62)
1.63
(0.69 - 1.69)
1.785
(0.69 - 1.785)
1.785
(0.69 - 1.785)
7.40
7.50
8.32
9.02
9.02
89 - 90
89 - 90
89 - 90
90 - 90
90 - 90
6.71
6.80
7.54
8.26
8.26
MXZ-18RV NOTE:Electrical data is for outdoor unit only.

9
07
09
12(13)
18
07+07
07+09
07+12(13)
07+18
09+09
09+12(13)
09+18
12(13)+12(13)
12(13)+18
18+18
07+07+07
07+07+09
07+07+12(13)
07+07+18
07+09+09
07+09+12(13)
07+09+18
07+12(13)+12(13)
07+12(13)+18
07+18+18
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
4.63
5.42
6.57
8.52
7.55
8.70
11.02
12.69
9.86
12.18
15.65
15.65
15.65
15.65
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
5.05
5.91
7.17
9.29
8.23
9.49
12.02
13.84
10.76
13.28
17.07
17.07
17.07
17.07
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
2.2
(1.8-2.7)
2.8
(1.8-3.2)
4.0
(2.2-4.5)
5.0
(2.2-5.4)
4.4
(3.0-5.4)
5.0
(3.0-6.0)
6.2
(3.0-7.2)
7.2
(3.0-7.6)
5.6
(3.0-6.4)
6.8
(3.0-7.6)
7.8
(3.0-8.6)
8.0
(3.0-8.8)
8.0
(3.0-8.8)
8.0
(3.0-8.8)
6.6
(3.7-8.1)
7.2
(3.7-8.5)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
7.8
(3.7-8.8)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
1.00
(0.96-1.14)
1.77
(0.96-1.36)
1.42
(1.00-1.63)
1.84
(1.00-1.99)
1.63
(1.30-2.03)
1.88
(1.30-2.23)
2.38
(1.30-3.60)
2.74
(1.30-3.60)
2.13
(1.30-3.60)
2.63
(1.30-3.60)
3.29
(1.30-3.60)
3.38
(1.30-3.60)
3.38
(1.30-3.60)
3.38
(1.30-3.60)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2.2
2.8
3.8
4.2
2.8
3.6
4.0
3.1
3.6
3.25
-
-
-
-
2.2
2.8
4.0
5.0
2.8
4.0
5.0
4.0
4.5
4.0
2.2
2.2
2.1
1.9
2.8
2.5
2.3
3.1
2.8
3.25
2.2
2.8
4.0
5.0
2.2
2.2
2.2
2.2
2.8
2.8
2.8
4.0
3.5
4.0
2.2
2.2
2.1
1.9
2.2
1.9
1.7
1.8
1.6
1.5
Indoor units
combination Unit A Unit B Unit C Unit D
Cooling capacity (kw)
Total
Outdoor unit
power consumption
(kw)
Current
(A) Power factor
(%)
220V 240V
NOTE: Electrical data is for outdoor unit only.
MXZ-32RV

10
Indoor units
combination Unit A Unit B Unit C Unit D
Cooling capacity (kw)
Total
Outdoor unit
power consumption
(kw)
Current
(A) Power factor
(%)
220V 240V
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
90
14.92
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
14.95
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
16.31
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
7.9
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
8.0
(3.7-9.0)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
3.23
(1.30-3.96)
-
-
-
-
-
-
-
-
2.0
2.4
2.9
3.5
2.2
2.8
3.2
2.6
3.0
2.1
2.7
3.1
2.45
2.0
2.6
3.0
2.35
2.67
3.4
3.8
3.0
3.4
3.1
2.67
3.1
2.0
1.83
1.7
1.5
2.2
2.0
1.8
2.6
2.4
2.1
1.9
1.75
2.45
2.0
1.8
1.67
2.35
2.67
2.3
2.1
2.0
1.9
1.8
2.67
2.45
2.0
1.83
1.7
1.5
1.8
1.6
1.5
1.4
1.3
1.7
1.5
1.4
1.35
2.0
1.8
1.67
1.65
2.67
2.3
2.1
3.0
2.7
3.1
2.67
2.45
2.0
1.83
1.7
1.5
1.8
1.6
1.5
1.4
1.3
2.1
1.9
1.75
1.75
2.0
1.8
1.67
1.65
09+09+09
09+09+12(13)
09+09+18
09+12(13)+12(13)
09+12(13)+18
09+18+18
12(13)+12(13)
+12(13)
12(13)+12(13)+18
07+07+07+07
07+07+07+09
07+07+07+12(13)
07+07+07+18
07+07+09+09
07+07+09+12(13)
07+07+09+18
07+07+12(13)
+12(13)
07+07+12(13)+18
07+09+09+09
07+09+09+12(13)
07+09+09+18
07+09+12(13)
+12(13)
09+09+09+09
09+09+09+12(13)
09+09+09+18
09+09+12(13)
+12(13)
NOTE: Electrical data is for outdoor unit only.