Mitsubishi Heavy Industries SCM50ZS-S1 User manual

Manual No.'18•SCM-T-251
TECHNICAL MANUAL
INVERTER MULTI-SPLIT SYSTEM
RESIDENTIAL AIR-CONDITIONERS
(Split system, air to air heat pump type)
(OUTDOOR UNIT)
SCM50ZS-S1
60ZM-S1
(INDOOR UNIT)
Wall mounted type
SRK20ZSX-S,-W
25ZSX-S,-W
35ZSX-S,-W
50ZSX-S,-W
60ZSX-S,-W
SRK20ZS-S,-W
25ZS-S,-W
35ZS-S,-W
50ZS-S,-W
SKM20ZSP-S
25ZSP-S
35ZSP-S
Floor standing type
SRF25ZMX-S
35ZMX-S
50ZMX-S
4-way ceiling cassette type
FDTC25VF
35VF
50VF
60VF
Ceiling concealed type
SRR25ZM-S
35ZM-S
50ZM-S
60ZM-S
Ceiling suspended type
FDE50VG
Duct connected Low/Middle static pressure type
FDUM50VF

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CONTENTS
1. OUTDOOR UNITS .......................................................................................... 7
1.1 Specifications .......................................................................................... 7
2. INDOOR UNITS .............................................................................................. 18
2.1 Specifications .......................................................................................... 18
(3) Ceiling concealed type (SRR)
(1) Wall mounted type (SRK) ....................................................................... 18
(2) Floor standing type (SRF) ...................................................................... 30
................................................................ 33
(1) Wall mounted type (SRK)
(4) 4-way ceiling cassette type (FDTC) ........................................................ 37
(5) Ceiling suspended type (FDE) ................................................................ 41
(6) Duct connected Low/Middle static pressure type (FDUM) ..................... 42
(5) Ceiling suspended type (FDE) ................................................................ 50
(6) Duct connected Low/Middle static pressure type (FDUM) ..................... 51
(5) Ceiling suspended type (FDE) ................................................................ 61
(6) Duct connected Low/Middle static pressure type (FDUM) ..................... 62
(2) Floor standing type (SRF) ...................................................................... 46
2.2 Exterior dimensions ................................................................................ 43
....................................................................... 43
1.2 Exterior dimensions ................................................................................. 9
1.3 Electrical wiring ....................................................................................... 10
1.4 Noise level ............................................................................................... 11
1.5 Application data ....................................................................................... 14
(3) Ceiling concealed type (SRR) ................................................................ 47
(4) 4-way ceiling cassette type (FDTC) ....................................................... 49
(1) Wall mounted type (SRK)
(2) Floor standing type (SRF) ...................................................................... 58
....................................................................... 55
(3) Ceiling concealed type (SRR) ................................................................ 59
(4) 4-way ceiling cassette type (FDTC) ........................................................ 60
(7) Remote control ....................................................................................... 52
2.3 Electrical wiring ...................................................................................... 55
(1) Wall mounted type (SRK)
(2) Floor standing type (SRF) ...................................................................... 69
....................................................................... 63
(3) Ceiling concealed type (SRR) ................................................................ 70
2.4 Noise level ............................................................................................... 63

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(4) 4-way ceiling cassette type (FDTC) ...................................................... 76
(5) Ceiling suspended type (FDE) ............................................................... 78
(6) Duct connected Low/Middle static pressure type (FDUM) ................... 79
(5) Ceiling suspended type (FDE) .............................................................. 108
(6) Duct connected Low/Middle static pressure type (FDUM) ................... 112
2.6 Application data .................................................................................... 82
2.5 Characteristics of fan ........................................................................... 80
(1) Wall mounted type (SRK)
5. TABLE OF INDOOR UNIT COMBINATIONS ............................................. 119
(1) Model SCM50ZS-S1 ............................................................................. 119
(2) Model SCM60ZM-S1 ............................................................................. 122
..................................................................... 82
.................................................................... 94
.............................................................. 98
6. SELECTION CHARTS ................................................................................ 126
...................................................... 102
(2) Floor standing type (SRF)
(3) Ceiling concealed type (SRR)
(4) 4-way ceiling cassette type (FDTC)
3. PIPING SYSTEM ......................................................................................... 117
4. RANGE OF USAGE & LIMITATIONS ........................................................ 118
7.1 SRK,SRF and SRR series ..................................................................... 127
7. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ............... 127
7.1.1 SRK-ZSX series ................................................................................. 127
7.1.2 SRK-ZS series ................................................................................... 137
7.1.3 SKM-ZSP series ............................................................................... 146
7.1.4 SRF, SRR series ............................................................................... 152
7.2 FDTC, FDE and FDUM series ................................................................. 162
.......................... 1677.2.3 Operation control function by the indoor control
7.2.2 Operation control function by the wired remote control ................ 164
7.2.1 Remote control (Option parts) .......................................................... 162
(1) Auto operation ........................................................................................ 167
(2) Operations of functional items during cooling/heating ........................... 168
(4) Timer operation ...................................................................................... 169
(5) Remote control display during the operation stop ................................... 170
(6) Hot start (Cold draft prevention at heating) ........................................... 170
(7) Hot keep ................................................................................................. 170
(3) Dehumidifying (DRY) operation ............................................................. 168
(8) Auto swing control (FDTC, FDE only) ................................................... 171

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(1) Summary ............................................................................................... 184
(3) Defrost operation .................................................................................. 184
(2) Operation of major functional components in heating mode ................. 184
7.3.1 Outline of heating operation ............................................................. 184
7.3 Outdoor units ........................................................................................ 184
....................................................................... 174
................................................................................ 174
................................................................... 175
........................... 174
.................................................. 175
................................................................................ 176
............................................................................ 176
............ 176
...... 177
(13) Drain motor (DM) control
(12) Drain pump control
(16) Heating overload protection
(14) Operation check/drain pump test run operation mode
(15) Cooling, dehumidifying frost protection
(19) High ceiling control
(17) Anomalous fan motor
(18)
Plural unit control - Control of 16 units group by one remote control
(20)
Abnormal temperature sensor (return air/indoor heat exchanger) broken wire/short-circuit detection
.............................. 181(24) Selection of cooling/heating external input function
................................................................ 182(25) Fan control at heating startup
................................................... 182(27) Return air temperature compensation
(26)
Room temperature detection temperature compensation during heating ......... 182
........................................ 177(21) External input/output control (CnT or CnTA)
................................................. 173(11) Compressor inching prevention control
(22) Operation permission/prohibition .......................................................... 179
(23) Temporary stop input ............................................................................ 181
.................................................... 182
........................................................ 182
............................................... 182
.......................................................... 182
........................................................ 183
(28) High power operation (RC-EX3 only)
(31) Home leave mode (RC-EX3 only)
(29) Energy-saving operation (RC-EX3 only)
(30) Warm-up control (RC-EX3 only)
(32) Auto temp. setting (RC-EX3 only)
................................................... 183(35) Auto fan speed control (RC-EX3 only)
................................................................ 183(37) Peak-cut time (RC-EX3 only)
(36) IU overload alarm (RC-EX3 only) .......................................................... 183
............................................... 183(33) Fan circulator operation (RC-EX3 only)
(34)
The operation judgment is executed every 5 minutes (RC-EX3 only) .... 183
(10) Filter sign ................................................................................................ 173
(9) Thermostat operation ............................................................................. 172

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.................................... 192
(11) Current safe ........................................................................................... 190
(16) Serial signal transmission error protection ............................................ 191
(15) Regulation of outdoor air flow ................................................................ 191
(14) Discharge pipe sensor disconnection protection control ....................... 191
(13) Outdoor unit failure ............................................................................... 191
(12) Current cut ............................................................................................ 191
(17) Rotor lock .............................................................................................. 191
(18) Outdoor fan motor protection ................................................................. 192
(20) Outdoor fan control at overload ............................................................. 193
(19) Outdoor fan control at low outdoor temperature
8.1 SRK, SKM, SRF and SRR series ............................................................ 194
8. MAINTENANCE DATA ................................................................................ 194
(1) Cautions ................................................................................................ 194
(2) Items to check before troubleshooting ................................................... 194
.......... 194
(4) Troubleshooting procedure (If the air-conditioner runs)
(3)
Troubleshooting procedure (If the air-conditioner does not run at all)
........................ 195
(5) Self-diagnosis table ............................................................................... 196
(6) Service mode (Trouble mode access function) ..................................... 197
...................... 205(7) Inspection procedures corresponding to detail of trouble
(8)
Phenomenon observed after shortcircuit, wire breakage on sensor ............. 210
(1) Cooling overload protective control ....................................................... 186
(10) Compressor overheat protection ........................................................... 190
(6) Heating low outdoor temperature protective control
.................................................................................. 189(8) Crankcase heater
.................................................................................. 189(9) Inching prevention
(7) Refrigeration cycle system protective control ....................................... 189
.............................. 188
................................................................ 186
(4) Heating high pressure control ................................................................ 187
(5) Heating overload protective control ....................................................... 188
(3) Cooling low outdoor temperature protective control
(2) Cooling high pressure control
.............................. 187
(1) Summary ............................................................................................... 185
(2) Operation of major functional components in cooling mode .................. 186
7.3.2 Outline of cooling operation ............................................................. 185
7.3.3 Protective control function .............................................................. 186

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10. COMPONENT REPLACEMENT .................................................................. 271
11. CHECKING PROCEDURE .......................................................................... 283
12.1 Wired remote control ........................................................................... 288
12.2 Wireless kit ............................................................................................ 301
12.3 Simple wired remote control (RCH-E3) ............................................... 324
12.4 Interface kit (SC-BIKN2-E) .................................................................... 330
12.5 Superlink E board (SC-ADNA-E) ......................................................... 334
12.6 Ceiling concealed type (SRR) option parts ........................................ 336
12.7 OA spacer (FDTC only) ........................................................................ 339
12.8 Duct joint (FDTC only) .......................................................................... 343
12.9 Filter kit (FDUM only) ............................................................................. 344
12. OPTION PARTS ........................................................................................... 288
9.
TABLE OF FUNCTIONS CONNECTED WIRED REMOTE CONTROL (RC-E5) ............ 269
8.2.2 Troubleshooting flow ........................................................................ 226
..................................................................................... 227(2) Troubleshooting
(1) List of troubles ....................................................................................... 226
(6) Outdoor unit inspection points ............................................................... 225
(1) FDTC series (RCN-TC-24W-E2) .......................................................... 301
(2) FDE series (RCN-E-E2) ........................................................................ 309
................................................................ 316(3) FDUM series (RCN-KIT4-E2)
(11) Inspection procedure for blown fuse on the indoor and outdoor PCB .... 212
(12) Outdoor unit inspection points ............................................................... 213
....................................... 212(10) How to make sure of wireless remote control
8.2.1 Diagnosing of microcomputer circuit ............................................. 215
8.2 FDTC, FDE and FDUM series ............................................................... 215
(1) Selfdiagnosis function ........................................................................... 215
(2) Troubleshooting procedure .................................................................... 218
......................................................... 218
(5) Inverter checker for diagnosis of inverter output ................................... 225
(4) Check of anomalous operation data with the remote control
(3) Troubleshooting at the indoor unit
................ 223
(9) Checking the indoor electrical equipment ............................................. 211
13. TECHNICAL INFORMATION ....................................................................... 346
(1) Model SCM50ZS-S1 ............................................................................. 346
(2) Model SCM60ZM-S1 ............................................................................. 352

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■ How to read the model name
Example:
Outdoor unit
SCM 50 Z
Series code
Inverter type
Product capacity
Model name
S-S1
Capacity
Model
Floor standing type (SRF)
Outdoor unit to be combined (SCM)
20 25 35 50 60
○ ○ ○ ○ ○
○ ○ ○ ○
○ ○ ○
○ ○ ○
○ ○ ○
○
○
○
SCM50ZS-S1, 60ZM-S1
Ceiling concealed type (SRR)
■ Table of models
Wall mounted type (SRK＊＊ZSX-S,W)
Wall mounted type (SRK＊＊ZS-S,W)
Duct connected Low/Middle static
pressure type (FDUM)
4-way ceiling cassette type (FDTC)
Ceiling suspended type (FDE)
Example:
Indoor unit
SRK 20 Z
Series code
Inverter type
Product capacity
Model name SRK,SKM
SRF
SRR
FDTC
FDE
FDUM
SX-S
: Wall mounted type
: Floor standing type
: Ceiling concealed type
: 4-way ceiling cassette type
: Ceiling suspended type
: Duct connected Low/Middle
static pressure type
Indoor unit Outdoor unit to be combined
Type Model SCM50ZS-S1 SCM60ZM-S1
Wall mounted type
SRK20ZSX-S,-W ○ ○
25ZSX-S,-W ○ ○
35ZSX-S,-W ○ ○
50ZSX-S,-W ○ ○
60ZSX-S,-W － ○
SRK20ZS-S,-W ○ ○
25ZS-S,-W ○ ○
35ZS-S,-W ○ ○
50ZS-S,-W ○ ○
SKM20ZSP-S ○ －
25ZSP-S ○ －
35ZSP-S ○ －
Floor standing type
SRF25ZMX-S ○ ○
35ZMX-S ○ ○
50ZMX-S ○ ○
Ceiling concealed type
SRR25ZM-S ○ ○
35ZM-S ○ ○
50ZM-S ○ ○
60ZM-S － ○
4-way ceiling cassette type
FDTC25VF ○ ○
35VF ○ ○
50VF ○ ○
60VF － ○
Ceiling suspended type FDE50VG ○ ○
Duct connected Low/Middle
static pressure type FDUM50VF ○ ○
■Table of models
■How to read the model name

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1. OUTDOOR UNITS
1.1 Specifications
Model
Item SCM50ZS-S1
Power source 1 Phase, 220 - 240V, 50Hz / 220V, 60Hz
Operation
data (1)
Nominal cooling capacity (Range) kW 5.0 ( 1.8 (Min.) - 7.1 (Max.))
Nominal heating capacity (Range) kW 6.0 ( 1.4(Min.) - 7.5 (Max.))
Heating capacity (H2) kW −
Power consumption
Cooling
kW
1.05 (0.60 - 2.15)
Heating 1.21 (0.55 - 2.58)
Heating (H2) −
Max power consumption 2.8
Running current Cooling
A
4.9 / 4.7 / 4.5 (220/ 230/ 240 V)
Heating 5.6 / 5.4 / 5.1 (220/ 230/ 240 V)
Inrush current, max current 5.0 Max. 14
Power factor Cooling ％98
Heating 98
EER Cooling 4.76
COP Heating 4.96
Heating (H2) −
Sound power level Cooling
dB(A)
61
Heating 63
Sound pressure level Cooling 48
Heating 50
Silent mode sound pressure level Cooling:43 / Heating:44
Exterior dimensions (Height x Width x Depth) mm 640 x 850(+65) x 290
Exterior appearance
(Equivalent color)
Stucco white
Munsell : (4.2Y 7.5/1.1), near equivalent
Net weight kg 49
Compressor type & Quantity RMT5113MFE2 (Twin rotary type) x 1
Compressor motor (Starting method) kW 1.4 (Line starting)
Refrigerant oil (Amount, type) 0.45 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 2.5 (Pre-charged up to the piping length of 40m)
Heat exchanger M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Device control Microcomputer control
Fan type & Quantity Propeller fan x 1
Fan motor (Starting method) W 34 x1 (Direct drive)
Air flow Cooling m3/min 41
Heating 41
Shock & vibration absorber Cushion rubber (for compressor)
Electric heater Crank case heater (220V 20W)
Safety equipments
Compressor overheat protection, Overcurrent protection,
Frost protection, Serial signal error protection, Outdoor fan motor error protection,
Heating overload protection( High pressure control ), Cooling overload protection
Installation
data
Refrigerant piping size ( O.D ) mm Liquid line:φ6.35 (1/4") x 3 Gas line:φ9.52 (3/8") x 3
Connecting method Flare connection
Insulation for piping Necessary (Both sides), independent
Refrigerant line (One way) length m Max. 25 (Length for one indoor unit)
Max. 40 (Total length for all rooms)
Vertical height diff. between O.U. and I.U. m Max. 15 (Outdoor unit is higher)
Max. 15 (Outdoor unit is lower)
Height difference of the indoor units m Max. 25
Recommended breaker size A 25
L.R.A. (Locked rotor ampere) A 5
Interconnecting wires Size x Core number 1.5mm2x 4 cores (Including earth cable)
Connecting method Terminal block (Screw fixing type)
IP number IPX4
Standard accessories Union : (φ9.52 →φ12.7 ) × 1, Installation sheet, Elbow, Grommet
Indoor unit to be combined
SRK20,25,35,50ZSX-S,-W
SRK20,25,35,50ZS-S,-W
SKM20,25,35ZSP-S, SRF25,35,50ZMX-S, SRR25,35,50ZM-S
FDTC25,35,50VF, FDE50VG, FDUM50VF
Number of connectable indoor units Min. 2−Max. 3
Total of indoor units kW Max. 8.5
Notes (1) The data are measured at the following conditions.
Item
Operation
Indoor air temperature Outdoor air temperature Standards
DB WB DB WB
Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1
Heating 20˚C — 7˚C 6˚C ISO5151-H1
Heating (H2) 20˚C — 2˚C 1˚C ISO5151-H2
(2) This air-conditioner is manufactured and tested in conformity with the ISO.
(3) Sound level indicates the value in an anechoic chamber.
During operation these values are somewhat higher due to ambient conditions.
(4) Select the breaker size according to the own national standard.
The pipe length is 5m.
RWC000Z314

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Model
Item SCM60ZM-S1
Power source 1 Phase, 220 - 240V, 50Hz / 220V, 60Hz
Operation
data (1)
Nominal cooling capacity (Range) kW 6.0 ( 1.8 (Min.) - 7.5 (Max.))
Nominal heating capacity (Range) kW 6.8 ( 1.5 (Min.) - 7.8 (Max.))
Heating capacity (H2) kW −
Power consumption
Cooling
kW
1.43 ( 0.50 - 2.39 )
Heating 1.45 ( 0.60 - 3.00 )
Heating (H2) −
Max power consumption 3.3
Running current Cooling
A
6.6 / 6.3 / 6.0 (220/ 230/ 240 V)
Heating 6.7 / 6.4 / 6.1(220/ 230/ 240 V)
Inrush current, max current 5.0 Max. 17
Power factor Cooling ％99
Heating 99
EER Cooling 4.20
COP Heating 4.69
Heating (H2) −
Sound power level Cooling
dB(A)
63
Heating 65
Sound pressure level Cooling 50
Heating 52
Silent mode sound pressure level Cooling:43 / Heating:44
Exterior dimensions (Height x Width x Depth) mm 640 x 850(+65) x 290
Exterior appearance
(Equivalent color)
Stucco white
Munsell : (4.2Y 7.5/1.1), near equivalent
Net weight kg 49.5
Compressor type & Quantity RMT5118MDE2 (Twin rotary type) x 1
Compressor motor (Starting method) kW 1.4 (Line starting)
Refrigerant oil (Amount, type) 0.675 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 2.5 (Pre-charged up to the piping length of 40m)
Heat exchanger M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Device control Microcomputer control
Fan type & Quantity Propeller fan x 1
Fan motor (Starting method) W 34 x1 (Direct drive)
Air flow Cooling m3/min 42
Heating 42
Shock & vibration absorber Cushion rubber (for compressor)
Electric heater Crank case heater (220V 20W)
Safety equipments
Compressor overheat protection, Overcurrent protection,
Frost protection, Serial signal error protection, Outdoor fan motor error protection,
Heating overload protection( High pressure control ), Cooling overload protection
Installation
data
Refrigerant piping size ( O.D ) mm Liquid line:φ6.35 (1/4") x 3 Gas line:φ9.52 (3/8") x 3
Connecting method Flare connection
Insulation for piping Necessary (Both sides), independent
Refrigerant line (One way) length m Max. 25 (Length for one indoor unit)
Max. 40 (Total length for all rooms)
Vertical height diff. between O.U. and I.U. m Max. 15 (Outdoor unit is higher)
Max. 15 (Outdoor unit is lower)
Height difference of the indoor units m Max. 25
Recommended breaker size A 25
L.R.A. (Locked rotor ampere) A 5
Interconnecting wires Size x Core number 1.5mm2x 4 cores (Including earth cable)
Connecting method Terminal block (Screw fixing type)
IP number IPX4
Standard accessories Union : (φ9.52→φ12.7) × 2, Installation sheet, Elbow, Grommet
Indoor unit to be combined
SRK20,25,35,50,60ZSX-S,-W
SRK20,25,35,50ZS-S,-W
SRF25,35,50ZMX-S, SRR25,35,50,60ZM-S
FDTC25,35,50,60VF, FDE50VG, FDUM50VF
Number of connectable indoor units Min. 2−Max. 3
Total of indoor units kW Max. 11
Notes (1) The data are measured at the following conditions.
Item
Operation
Indoor air temperature Outdoor air temperature Standards
DB WB DB WB
Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1
Heating 20˚C — 7˚C 6˚C ISO5151-H1
Heating (H2) 20˚C — 2˚C 1˚C ISO5151-H2
(2) This air-conditioner is manufactured and tested in conformity with the ISO.
(3) Sound level indicates the value in an anechoic chamber.
During operation these values are somewhat higher due to ambient conditions.
(4) Select the breaker size according to the own national standard.
The pipe length is 5m.
RWC000Z314