Page 1 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 Floor standing type Ceiling concealed type SRK20ZSX-S,-W SKM20ZSP-S SRF25ZMX-S SRR25ZM-S 25ZSX-S,-W 25ZSP-S 35ZMX-S 35ZM-S...
Page 3: Table Of Contents
'18 • SCM-T-251 CONTENTS 1. OUTDOOR UNITS ..................7 1.1 Specifications ..................7 1.2 Exterior dimensions ................. 9 1.3 Electrical wiring ..................10 1.4 Noise level ....................11 1.5 Application data ..................14 2. INDOOR UNITS ....................18 2.1 Specifications ..................18 (1) Wall mounted type (SRK) ...............
Page 4 3. PIPING SYSTEM ..................117 4. RANGE OF USAGE & LIMITATIONS ............118 5. TABLE OF INDOOR UNIT COMBINATIONS ..........119 (1) Model SCM50ZS-S1 ................119 (2) Model SCM60ZM-S1 ................122 6. SELECTION CHARTS ................126 7. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ....127 7.1 SRK,SRF and SRR series ..............
Page 5 '18 • SCM-T-251 (9) Thermostat operation ................172 (10) Filter sign ....................173 (11) Compressor inching prevention control ..........173 (12) Drain pump control ................174 (13) Drain motor (DM) control ............... 174 (14) Operation check/drain pump test run operation mode ......
Page 6 '18 • SCM-T-251 7.3.2 Outline of cooling operation ............. 185 (1) Summary ....................185 (2) Operation of major functional components in cooling mode ....186 7.3.3 Protective control function .............. 186 (1) Cooling overload protective control ............186 (2) Cooling high pressure control ..............
Page 7 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 13. TECHNICAL INFORMATION ............... 346 (1) Model SCM50ZS-S1 ................346 (2) Model SCM60ZM-S1 ................352...
Page 8 Duct connected Low/Middle ○ ○ ○ pressure type (FDUM) FDUM50VF static pressure type Outdoor unit to be combined (SCM) SCM50ZS-S1, 60ZM-S1 ■ How to read the model name How to read the model name ■ Outdoor unit Example: SCM 50 Z S-S1...
Page 9: Outdoor Units
'18 • SCM-T-251 1. OUTDOOR UNITS 1.1 Specifications Model SCM50ZS-S1 Item Power source 1 Phase, 220 - 240V, 50Hz / 220V, 60Hz Nominal cooling capacity (Range) 5.0 ( 1.8 (Min.) - 7.1 (Max.)) Nominal heating capacity (Range) 6.0 ( 1.4(Min.) - 7.5 (Max.)) −...
Page 10 '18 • SCM-T-251 Model SCM60ZM-S1 Item Power source 1 Phase, 220 - 240V, 50Hz / 220V, 60Hz Nominal cooling capacity (Range) 6.0 ( 1.8 (Min.) - 7.5 (Max.)) Nominal heating capacity (Range) 6.8 ( 1.5 (Min.) - 7.8 (Max.)) − Heating capacity (H2) Cooling 1.43 ( 0.50 - 2.39 )
Page 11: Exterior Dimensions
'18 • SCM-T-251 1.2 Exterior dimensions Models SCM50ZS-S1, 60ZM-S1 RWC000Z318...
Page 12: Electrical Wiring
'18 • SCM-T-251 1.3 Electrical wiring Models SCM50ZS-S1, 60ZM-S1 RWC000Z319...
Page 13: Noise Level
'18 • SCM-T-251 1.4 Noise level (1) Sound power level Model SCM50ZS-S1 Condition ISO5151 T1/H1 Noise Cooling 61 dB(A) Level Heating 63 dB(A) Mode Rated capacity value × ..Cooling, Heating 90.0 80.0 70.0 60.0 50.0 40.0 30.0 1000 2000...
Page 14 '18 • SCM-T-251 (2) Sound pressure level (a) Rated capacity value Model SCM50ZS-S1 Condition ISO5151 T1/H1 Cooling 48 dB(A) Noise Level Heating 50 dB(A) Mode Rated capacity value × ..Cooling, Heating 1000 2000 4000 8000 Mid octave band frequency (Hz)
Page 15 '18 • SCM-T-251 (b) Silent mode Model SCM50ZS-S1 Condition ISO5151 T1/H1 Cooling 43 dB(A) Noise Level Heating 44 dB(A) Mode Silent × ..Cooling, Heating 1000 2000 4000 8000 Mid octave band frequency (Hz) Model SCM60ZM-S1 Condition ISO5151 T1/H1 Cooling...
Page 16: Application Data
'18 • SCM-T-251 1.5 Application data RPC012A200A RPC012A200A Models SCM50ZS-S1, 60ZM-S1 INSTALLATION MANUAL FOR OUTDOOR UNIT Model SCM40,45,50,60 R410A REFRIGERANT USED • This installation manual deals with an outdoor unit installation only. For an indoor unit installation, refer to page 82. NOTE This model requires a minimum of 2 indoor units.
Page 17 '18 • SCM-T-251 2. OUTDOOR UNIT INSTALLATION 3. Installation space NOTE Do not step on a top and the service cover of the unit. • There must be 1 meter or larger space between the unit and the wall in at least 1 of the 4 sides. 1.
Page 18 '18 • SCM-T-251 4. CONNECTING PIPING WORK 1. Restrictions on unit installation 3.2. Connecting pipes (1) Connect pipes on both liquid and gas sides. Abide by the following restrictions on unit installation. Improper installation can cause compressor failure or performance degradation. <SCM40/45>...
Page 19 '18 • SCM-T-251 RPC012A200A 5. ELECTRICAL WIRING WORK 2.Connecting cable <SCM40/45> (1) Remove the service cover and the terminal cover. (2) Connect the cables according to the instructions and figures given below. View of terminal block (a) Connect the earth wire of power source cable. unit A unit B An earth wire must be connected before connecting the other wires of power source cable. Keep the earth wire longer than the remaining two wires of power source cable.
Page 20: Indoor Units
'18 • SCM-T-251 2. INDOOR UNITS 2.1 Specifications (1) Wall mounted type (SRK) (a) Models SRK20, 25, 35, 50, 60ZSX-S SRK20, 25, 35, 50, 60ZSX-W Adapted to RoHS directive Model SRK20ZSX-S, SRK20ZSX-W Item 1 Phase, 220 − 240 V, 50Hz/220V, 60Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range)
Page 21 '18 • SCM-T-251 Adapted to RoHS directive Model SRK25ZSX-S, SRK25ZSX-W Item 1 Phase, 220 − 240 V, 50Hz/220V, 60Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Operation data Heating Cooling dB(A) Hi: 39 Me: 33 Lo: 25 ULo: 19 Sound pressure level Heating Hi: 40 Me: 34 Lo: 27 ULo: 19...
Page 22 '18 • SCM-T-251 Adapted to RoHS directive Model SRK35ZSX-S, SRK35ZSX-W Item 1 Phase, 220 − 240 V, 50Hz/220V, 60Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Operation data Heating Cooling dB(A) Hi: 43 Me: 35 Lo: 26 ULo: 19 Sound pressure level Heating Hi: 41 Me: 35 Lo: 28 ULo: 19...
Page 23 '18 • SCM-T-251 Adapted to RoHS directive Model SRK50ZSX-S, SRK50ZSX-W Item 1 Phase, 220 − 240 V, 50Hz/220V, 60Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Operation data Heating Cooling dB(A) Hi: 44 Me: 39 Lo: 31 ULo: 22 Sound pressure level Heating Hi: 46 Me: 41 Lo: 33 ULo: 23...
Page 24 '18 • SCM-T-251 Adapted to RoHS directive Model SRK60ZSX-S, SRK60ZSX-W Item 1 Phase, 220 − 240 V, 50Hz/220V, 60Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Operation data Heating Cooling dB(A) Hi: 46 Me: 41 Lo: 33 ULo: 22 Sound pressure level Heating Hi: 46 Me: 42 Lo: 34 ULo: 23...
Page 25 '18 • SCM-T-251 (b) Models SRK20, 25, 35, 50ZS-S SRK20, 25, 35, 50ZS-W Adapted to RoHS directive Model SRK20ZS-S , SRK20ZS-W Item 1 Phase, 220 − 240 V, 50Hz/220V, 60Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Operation data...
Page 26 '18 • SCM-T-251 Adapted to RoHS directive Model SRK25ZS-S, SRK25ZS-W Item 1 Phase, 220 − 240 V, 50Hz / 220 V, 60Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Operation data Heating Cooling dB(A) Hi: 36 Me: 28 Lo: 23 ULo: 19 Sound pressure level...
Page 27 '18 • SCM-T-251 Adapted to RoHS directive Model SRK35ZS-S, SRK35ZS-W Item 1 Phase, 220 − 240 V, 50Hz / 220 V, 60Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Operation data Heating Cooling dB(A) Hi: 40 Me: 30 Lo: 26 ULo: 19 Sound pressure level...
Page 28 '18 • SCM-T-251 Adapted to RoHS directive Model SRK50ZS-S, SRK50ZS-W Item 1 Phase, 220 − 240 V, 50Hz / 220 V, 60Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Operation data Heating Cooling dB(A) Hi: 45 Me: 36 Lo: 28 ULo: 22 Sound pressure level...
Page 29 '18 • SCM-T-251 (c) Models SKM20, 25, 35ZSP-S Adapted to RoHS directive Model SKM20ZSP-S Item 1 Phase, 220 − 240V, 50Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Operation data Heating Cooling dB(A) Hi: 42 Me: 35 Lo: 24 Sound pressure level Heating...
Page 30 '18 • SCM-T-251 Adapted to RoHS directive Model SKM25ZSP-S Item 1 Phase, 220 − 240V, 50Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Operation data Heating Cooling dB(A) Hi: 43 Me: 35 Lo: 24 Sound pressure level Heating Hi: 41 Me: 35 Lo: 27...
Page 31 '18 • SCM-T-251 Adapted to RoHS directive Model SKM35ZSP-S Item 1 Phase, 220 − 240V, 50Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Operation data Heating Cooling dB(A) Hi: 44 Me: 37 Lo: 24 Sound pressure level Heating Hi: 42 Me: 37 Lo: 29...
Page 32: Floor Standing Type (Srf)
'18 • SCM-T-251 (2) Floor standing type (SRF) Adapted to RoHS directive Model SRF25ZMX-S Item 1 Phase, 220 − 240 V, 50Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Operation data Heating Cooling dB(A) Hi: 40 Me: 32 Lo: 29 ULo: 26 Sound pressure level...
Page 33 '18 • SCM-T-251 Adapted to RoHS directive Model SRF35ZMX-S Item 1 Phase, 220 − 240 V, 50Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Operation data Heating Cooling dB(A) Hi: 41 Me: 34 Lo: 32 ULo: 28 Sound pressure level Heating Hi: 41 Me: 36 Lo: 35 ULo: 31...
Page 34 '18 • SCM-T-251 Adapted to RoHS directive Model SRF50ZMX-S Item 1 Phase, 220 − 240 V, 50Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Operation data Heating Cooling dB(A) Hi: 46 Me: 42 Lo: 35 ULo: 32 Sound pressure level Heating Hi: 47 Me: 41 Lo: 39 ULo: 33...
Page 35: Ceiling Concealed Type (Srr)
'18 • SCM-T-251 (3) Ceiling concealed type (SRR) Model SRR25ZM-S Item 1 Phase, 220 − 240 V, 50Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Heating Cooling Hi: 37 Me: 33 Lo: 30 ULo: 24 Sound pressure level ①...
Page 36 '18 • SCM-T-251 Model SRR35ZM-S Item 1 Phase, 220 − 240 V, 50Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Heating Cooling Hi: 38 Me: 34 Lo: 31 ULo: 25 Sound pressure level ① Operation data Heating Hi: 42 Me: 38 Lo: 35 ULo: 29...
Page 37 '18 • SCM-T-251 Model SRR50ZM-S Item 1 Phase, 220 − 240 V, 50Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Heating Cooling Hi: 41 Me: 37 Lo: 34 ULo: 29 Sound pressure level ① Operation data Heating Hi: 43 Me: 39 Lo: 37 ULo: 32...
Page 38 '18 • SCM-T-251 Model SRR60ZM-S Item 1 Phase, 220 − 240 V, 50Hz Power source Nominal cooling capacity (range) Nominal heating capacity (range) Cooling Sound power level Heating Cooling Hi: 44 Me: 38 Lo: 35 ULo: 30 Sound pressure level ① Operation data Heating Hi: 45 Me: 41 Lo: 38 ULo: 33...
Page 39: 4-Way Ceiling Cassette Type (Fdtc)
'18 • SCM-T-251 (4) 4-way ceiling cassette type (FDTC) Adapted to RoHS directive FDTC25VF Model Item Panel TC-PSA-25W-E 1 Phase, 220 − 240V, 50Hz Power source Operation data Cooling Heating Nominal capacity (1) Cooling : 56 Sound power level Heating : 56 dB(A) Cooling P-Hi : 38 Hi : 36 Me : 32 Lo : 29 Sound pressure level...
Page 40 '18 • SCM-T-251 Adapted to RoHS directive FDTC35VF Model Item Panel TC-PSA-25W-E 1 Phase, 220 − 240V, 50Hz Power source Operation data Cooling Heating Nominal capacity (1) Cooling : 58 Sound power level Heating : 58 dB(A) Cooling P-Hi : 41 Hi : 40 Me : 36 Lo : 30 Sound pressure level Heating P-Hi : 43 Hi : 42 Me : 35 Lo : 32 Exterior dimensions...
Page 41 '18 • SCM-T-251 Adapted to RoHS directive FDTC50VF Model Item Panel TC-PSA-25W-E 1 Phase, 220 − 240V, 50Hz Power source Operation data Cooling Heating Nominal capacity (1) Cooling : 60 Sound power level Heating : 60 dB(A) Cooling P-Hi : 47 Hi : 42 Me : 36 Lo : 30 Sound pressure level Heating P-Hi : 47 Hi : 42 Me : 36 Lo : 32 Exterior dimensions...
Page 42 '18 • SCM-T-251 Adapted to RoHS directive FDTC60VF Model Item Panel TC-PSA-25W-E 1 Phase, 220 − 240V, 50Hz Power source Operation data Cooling Heating Nominal capacity (1) Cooling : 60 Sound power level Heating : 60 dB(A) Cooling P-Hi : 47 Hi : 46 Me : 39 Lo : 30 Sound Pressure Level Heating P-Hi : 47 Hi : 46 Me : 39 Lo : 32 Exterior dimensions...
Page 43: Ceiling Suspended Type (Fde)
'18 • SCM-T-251 (5) Ceiling suspended type (FDE) Adapted to RoHS directive Model FDE50VG Item 1 Phase, 220 − 240V, 50Hz/220V, 60Hz Power source Operation data Cooling Heating Nominal capacity (1) Sound power level dB(A) Sound pressure level P-Hi : 46 Hi : 38 Me : 36 Lo : 31 Exterior dimensions 210 ×...
Page 44: Duct Connected Low/Middle Static Pressure Type (Fdum)
'18 • SCM-T-251 (6) Duct connected Low/Middle static pressure type (FDUM) Adapted to RoHS directive Model FDUM50VF Item 1 Phase, 220 − 240V, 50Hz/220V, 60Hz Power source Operation data Cooling Heating Nominal capacity (1) Sound power level dB(A) Sound pressure level P-Hi : 37 Hi : 32 Me : 29 Lo : 26 Exterior dimensions 280 ×...
Page 45: Exterior Dimensions
'18 • SCM-T-251 2.2 Exterior dimensions (1) Wall mounted type (SRK) Models SRK20ZSX-S, 25ZSX-S, 35ZSX-S, 50ZSX-S, 60ZSX-S SRK20ZSX-W, 25ZSX-W, 35ZSX-W, 50ZSX-W, 60ZSX-W RLF000Z201 RLF000Z202...
Page 46 '18 • SCM-T-251 Models SRK20ZS-S, 25ZS-S, 35ZS-S, 50ZS-S SRK20ZS-W, 25ZS-W, 35ZS-W, 50ZS-W RLF000Z101 RLF000Z103...
Page 47 '18 • SCM-T-251 Models SKM20ZSP-S, 25ZSP-S, 35ZSP-S RLC000Z003...
Page 48: Floor Standing Type (Srf)
'18 • SCM-T-251 (2) Floor standing type (SRF) Models SRF25ZMX-S, 35ZMX-S, 50ZMX-S RFB000Z006...
Page 49: Ceiling Concealed Type (Srr)
'18 • SCM-T-251 (3) Ceiling concealed type (SRR) Models SRR25ZM-S, 35ZM-S 660 （ Inlet dimension） Symbol Content φ9.52 （ 3／8"）（ Flare） Gas piping φ6.35 （ 1／4"）（ Flare） Liquid piping VP25 （ I.D.25 , O.D.32） Drain piping （Used with attached connector） VP25 （...
Page 50 '18 • SCM-T-251 Models SRR50ZM-S, 60ZM-S 860 （Inlet dimension） Symbol Content Gas piping φ12.7（1／2"）（Flare） Liquid piping φ6.35（1／4"）（Flare） VP25（I.D.25 , O.D.32） Drain piping （Used with attached connector） Drain piping VP25（I.D.25 , O.D.32） Air inlet （Used with attached connector）（Gravity drainage） 990 （Suspension bolts pitch） Hole for wiring φ25 x 2 （M10）...
Page 51: 4-Way Ceiling Cassette Type (Fdtc)
'18 • SCM-T-251 (4) 4-way ceiling cassette type (FDTC) Models FDTC25VF, 35VF, 50VF, 60VF PJA003Z338...
Page 52: Ceiling Suspended Type (Fde)
'18 • SCM-T-251 (5) Ceiling suspended type (FDE) Model FDE50VG PFA004Z025...
Page 53: Duct Connected Low/Middle Static Pressure Type (Fdum)
'18 • SCM-T-251 (6) Duct connected Low/Middle static pressurer type (FDUM) Model FDUM50VF Symbol Content Gas piping φ12.7(1／2")(Flare) Liquid piping φ6.35(1／4")(Flare）（Duct dimension） Drain piping VP25(I.D.25,O.D.32) Drain piping VP20(I.D.20,O.D.26) （Gravity drainage） Hole for wiring Drain hose piece Suspension bolts (M10) （Accessory）...
Page 54: Remote Control
'18 • SCM-T-251 (7) Remote control (a) Wireless remote control (3) Remote control Models SRK, SRF, SRR (Typical example) Unit : mm Models FDTC,FDE, FDUM (Option parts)
Page 55 '18 • SCM-T-251 (b) Wired remote control (Option parts) Interface kit (SC-BIKN2-E) is required to use the wired remote control. (Models SRK, SRF and SRR only) Model RC-EX3 Installation space Exterior appearance Pearl White white (Munsell color) (N8.5) near equivalent allen R/C cable：0.3mm ×...
Page 56 '18 • SCM-T-251 Model RC-E5 Wiring outlet Cut off the upper thin part of remote control lower case with a nipper or knife, and grind burrs with a file etc. Exposed mounting In case of pulling out In case of pulling out from upper left from center 0.3mm...
Page 57: Electrical Wiring
'18 • SCM-T-251 2.3 Electrical wiring (1) Wall mounted type (SRK) Models SRK20ZSX-S, 25ZSX-S, 35ZSX-S, 50ZSX-S, 60ZSX-S SRK20ZSX-W, 25ZSX-W, 35ZSX-W, 50ZSX-W, 60ZSX-W R W A 0 0 0 Z 4 1 2 R W A 0 0 0 Z 4 1 3...
Page 58 '18 • SCM-T-251 Models SRK20ZS-S, 25ZS-S, 35ZS-S, 50ZS-S SRK20ZS-W, 25ZS-W, 35ZS-W, 50ZS-W RWA000Z410 RWA000Z416...
Page 59 '18 • SCM-T-251 Models SKM20ZSP-S, 25ZSP-S, 35ZSP-S RWA000Z268...
Page 60: Floor Standing Type (Srf)
'18 • SCM-T-251 (2) Floor standing type (SRF) Models SRF25ZMX-S, 35ZMX-S, 50ZMX-S RWB000Z057...
Page 61: Ceiling Concealed Type (Srr)
'18 • SCM-T-251 (3) Ceiling concealed type (SRR) Models SRR25ZM-S, 35ZM-S, 50ZM-S, 60ZM-S RJJ000Z003...
Page 62: 4-Way Ceiling Cassette Type (Fdtc)
'18 • SCM-T-251 (4) 4-way ceiling cassette type (FDTC) Models FDTC25VF, 35VF, 50VF, 60VF PJA003Z340...
Page 63: Ceiling Suspended Type (Fde)
'18 • SCM-T-251 (5) Ceiling suspended type (FDE) Model FDE50VG PFA004Z028...
Page 64: Duct Connected Low/Middle Static Pressure Type (Fdum)
'18 • SCM-T-251 (6) Duct connected Low/Middle static pressure type (FDUM) Model FDUM50VF PJG000Z005...
Page 65: Noise Level
'18 • SCM-T-251 2.4 Noise level (1) Wall mounted type (SRK) Models SRK20ZSX-S, SRK20ZSX-W Condition ISO5151 T1/H1 Mike position Noise Cooling 38 dB(A) Level Heating 38 dB(A) 0.8m Unit Mike position (Center & low points) × ..Cooling, Heating N 7 0 N 6 0 Mike position: at highest noise level in position as mentioned belo Distance from front side 1m...
Page 66 '18 • SCM-T-251 Models SRK35ZSX-S, SRK35ZSX-W Condition ISO5151 T1/H1 Mike position Cooling 43 dB(A) Noise Level Heating 41 dB(A) 0.8m Unit Mike position (Center & low points) × ..Cooling, Heating N 70 N 60 Mike position: at highest noise level in position as mentioned belo Distance from front side 1m N 50 N 40...
Page 67 '18 • SCM-T-251 Models SRK60ZSX-S, SRK60ZSX-W Condition ISO5151 T1/H1 Cooling 46 dB(A) Mike position Noise Level Heating 46 dB(A) 0.8m Unit Mike position (Center & low points) × ..Cooling, Heating N 70 N 60 Mike position: at highest noise level in position as mentioned bel Distance from front side 1m N 50 N 40...
Page 68 '09•SRK-DB-087D Model SRK25ZJ-S '18 • SCM-T-251 (Indoor Unit) Models SRK25ZS-S, SRK25ZS-W Condition ISO5151 T1/H1 Mike position Noise Cooling 36 dB(A) Level Heating 39 dB(A) 0.8m Unit Mike position (Center & low points) × ..Cooling, Heating Mike position: at highest noise level in position as mentioned belo Distance from front side 1m '09•SRK-DB-087D 1000...
Page 69 '18 • SCM-T-251 Models SRK50ZS-S, SRK50ZS-W Condition ISO5151 T1/H1 Mike position 45 dB(A) Cooling Noise Level Heating 45 dB(A) 0.8m Unit Mike position (Center & low points) × ..Cooling, Heating Mike position: at highest noise level in position as mentioned belo Distance from front side 1m 1000 2000...
Page 70 '18 • SCM-T-251 Model SKM25ZSP-S Condition ISO5151 T1/H1 Mike position Cooling 43 dB(A) Noise ● Level Heating 41 dB(A) 0.8m Unit Mike position (Front & low points) × ..Cooling, Heating Mike position: at highest noise level in position as mentioned belo ●...
Page 71: Floor Standing Type (Srf)
'18 • SCM-T-251 (2) Floor standing type (SRF) Model SRF25ZMX-S Condition ISO-T1, JIS C 9612 Cooling 40 dB(A) Noise Mike position ● Level Heating 40 dB(A) Mike position Unit (Front points) × ..Cooling, Heating 1000 2000 4000 8000 Mid octave band frequency (Hz) Model SRF35ZMX-S Condition ISO-T1, JIS C 9612 Cooling...
Page 72: Ceiling Concealed Type (Srr)
'18 • SCM-T-251 Model SRF50ZMX-S Condition ISO-T1, JIS C 9612 Cooling 46 dB(A) Noise Mike position ● Level Heating 47 dB(A) Mike position Unit (Front points) × ..Cooling, Heating 1000 2000 4000 8000 Mid octave band frequency (Hz) (3) Ceiling concealed type (SRR) Condition ISO5151-T1, JIS C 9612 Model SRR25ZM-S...
Page 73 Mike position ● '18 • SCM-T-251 Unit 1.5m ・Sound pressure level ② Condition ISO5151-T1, JIS C 9612 Mike position ● Cooling 31 dB(A) Noise Level Heating 33 dB(A) Unit Supply duct Return duct 1.5m External staic pressure : 10Pa × ..Cooling, Mike position Heating ●...
Page 74 '18 • SCM-T-251 Model SRR35ZM-S Condition ISO5151-T1, JIS C 9612 ・Sound pressure level ① Mike position ● Noise Cooling 38 dB(A) Unit Level Heating 42 dB(A) 1.5m × ..Cooling, Mike position Heating ● Unit Supply duct Return duct 1.5m External staic pressure : 10Pa Mike position ●...
Page 75 Mike position ● '18 • SCM-T-251 Unit Supply duct Return duct 1.5m ・Sound pressure level ③ External staic pressure : 10Pa Condition ISO5151-T1, JIS C 9612 Mike position ● Cooling 40 dB(A) Noise Level Heating 45 dB(A) Unit Supply duct Return duct External staic pressure : 10Pa ×...
Page 76 Mike position ● '18 • SCM-T-251 Unit 1.5m ・Sound pressure level ② Condition ISO5151-T1, JIS C 9612 Cooling 35 dB(A) Mike position Noise ● Level Heating 38 dB(A) Unit Supply duct Return duct 1.5m External staic pressure : 10Pa × ..Cooling, Heating Mike position ●...
Page 77 '18 • SCM-T-251 Model SRR60ZM-S Condition ISO5151-T1, JIS C 9612 ・Sound pressure level ① Mike position ● Cooling 44 dB(A) Noise Unit Level Heating 45 dB(A) 1.5m × ..Cooling, Mike position Heating ● Unit Supply duct Return duct 1.5m External staic pressure : 10Pa Mike position ●...
Page 78: 4-Way Ceiling Cassette Type (Fdtc)
Mike position ● '18 • SCM-T-251 Unit Supply duct Return duct 1.5m ・Sound pressure level ③ External staic pressure : 10Pa Condition ISO5151-T1, JIS C 9612 Noise Cooling 42 dB(A) Mike position ● Level Heating 47 dB(A) Unit Supply duct Return duct External staic pressure : 10Pa ×...
Page 79 '18 • SCM-T-251 Model FDTC35VF Condition ISO-T1, JIS C 9612 Cooling 41 dB(A) Mike position Noise ● Level Heating 43 dB(A) 1.5m Mike position (Center & below unit) × ..Cooling, Heating 1000 2000 4000 8000 Mid octave band frequency (Hz) Model FDTC50VF Condition ISO-T1, JIS B 8616 Mike position...
Page 80: Ceiling Suspended Type (Fde)
'18 • SCM-T-251 Model FDTC60VF Condition ISO-T1, JIS B 8616 Cooling 47 dB(A) Mike position Noise ● Level Heating 47 dB(A) 1.5m Mike position (Center & below unit) × ..Cooling, Heating 1.4 NOISE LEVEL Notes(1) The data are based on the following conditions. Ambient air temperature: Indoor unit 27℃WB.
Page 81: Duct Connected Low/Middle Static Pressure Type (Fdum)
'18 • SCM-T-251 (6) Duct connected Low/Middle static pressure type (FDUM) Model FDUM50VF Condition ISO-T1, JIS B 8616 Cooling 37 dB(A) Noise Mike position ● Level Heating 37 dB(A) Return duct Supply duct 1.5m Mike position (Center & below unit) ×...
Page 82: Characteristics Of Fan
'18 • SCM-T-251 2.5 Characteristics of fan (1) Ceiling concealed type (SRR) Model SRR25ZM-S Cooling Heating Air flow (m /min) Air flow (m /min) Model SRR35ZM-S Cooling Heating Air flow (m /min) Air flow (m /min) Model SRR50ZM-S Cooling Heating Air flow (m /min) Air flow (m...
Page 83 '18 • SCM-T-251 (2) Duct connected Low/Middle static pressure type (FDUM) ・Characteristic FAN (1) shows air flow vs. External Static Pressure (E.S.P.) range where settings of E.S.P. are maximum E.S.P. (100Pa) , 　rated E.S.P., and minimum E.S.P. (10Pa). ・Characteristic FAN (2) shows air flow vs. E.S.P. curve when set fan tap is set P-Hi with each setting of E.S.P. by wired remote control. ・External Static Pressure (E.S.P.) can be set by wired remote control.
Page 84: Application Data
'18 • SCM-T-251 △ 2.6 Application data RLF012A202B Model SRK20,25,35,50,60ZSX (1) Wall mounted type (SRK) R32/R410A REFRIGERANT USED (a) Models SRK20ZSX, 25ZSX, 35ZSX, 50ZSX, 60ZSX • • This installation manual deals with an indoor unit installation only. For an outdoor unit installation, refer to page 14. •...
Page 85 '18 • SCM-T-251 △ 2. SELECTING INSTALLATION LOCATION After getting customer’s approval, select installation location according to following guidelines. 6.5 cm minimum from the ceiling (In the case of less than 10 cm, Installation example there is a possibility of performance 1.
Page 86 '18 • SCM-T-251 6. FORMING PIPING AND DRAIN HOSE 1. Forming piping Piping is possible in the right, rear, downward, left, left rear or left downward direction. Pipings Forming of pipings Taping of the exterior • Hold the bottom of the •...
Page 87 '18 • SCM-T-251 10. HOW TO OPEN, CLOSE, REMOVE AND INSTALL 13. INSTALLING TWO AIR-CONDITIONERS IN THE SAME ROOM THE AIR INLET PANEL 1. Open In case two air-conditioners are installed in the same room, apply this setting so that one unit can be Air inlet panel operated with only one wireless remote control.
Page 88 '18 • SCM-T-251 (b) Models SRK20ZS, 25ZS, 35ZS, 50ZS, 60ZS RLF012A105 INSTALLATION MANUAL FOR INDOOR UNIT Model SRK20,25,35,50ZS R32/R410A REFRIGERANT USED • This installation manual deals with an indoor unit installation only. For an outdoor unit installation, refer to page 14. •...
Page 89 '18 • SCM-T-251 2. SELECTING INSTALLATION LOCATION After getting customer’s approval, select installation location according to following guidelines. 10 cm minimum from the ceiling Installation example 1. Indoor unit Installation board • Where there is no obstruction to the airfl ow and where the cooled and heated air can be evenly distributed.
Page 90 '18 • SCM-T-251 6. FORMING PIPING AND DRAIN HOSE 1. Forming piping Forming of pipings. Taping of the exterior Piping is possible in the right, rear, downward, left, left rear or left downward direction. • Hold the bottom of the piping and fi x direction •...
Page 91 '18 • SCM-T-251 RLF012A105 10. HOW TO OPEN, CLOSE, REMOVE AND INSTALL 11. HOW TO REMOVE AND INSTALL THE BOTTOM AND THE AIR INLET PANEL FRONT PANEL 1. Open 1. Bottom panel Front panel Pull the air inlet panel at both ends of lower part 1.1.
Page 92 '18 • SCM-T-251 (c) Models SKM20ZSP-S, 25ZSP-S, 35ZSP-S RLC012A013A RLC012Z013A INSTALLATION MANUAL FOR INDOOR UNIT Model SKM20,25,35 R410A REFRIGERANT USED • This installation manual deals with an indoor unit installation only. For an outdoor unit installation, refer to page 14. SAFETY PRECAUTIONS • Before installation, read the “SAFETY PRECAUTIONS” carefully and strictly follow it during the installa- •...
Page 93 '18 • SCM-T-251 2. SELECTING INSTALLATION LOCATION After getting customer’s approval, select installation location according to following guidelines. 5 cm minimum 6.5 cm minimum from the ceiling from the wall 1. Indoor unit Installation board • Where there is no obstruction to the airflow and where the cooled and heated air can be evenly 10 cm minimum distributed.
Page 94 '18 • SCM-T-251 6. FORMING PIPING AND DRAIN HOSE 1. Forming piping 2. Drain change procedures Piping is possible in the right, rear, downward, left, left rear or left downward direction. (1) Remove the screw and drain hose. (2) Remove the drain cap by hand or pliers. (3) Insert the drain cap which was removed at procedure (2) securely using a hexagonal wrench etc.
Page 95 '18 • SCM-T-251 RLC012A013A 10. HOW TO REMOVE AND INSTALL FRONT PANEL 11. INSTALLING REMOTE CONTROL Removing Installing Mount the batteries Installing remote control holder (1) Remove the 2 screws. (1) Cover the unit with the front panel and fix 3 (1) Slide and take out the cover of backside. (1) Select the place where the unit can (2) Remove the 3 upper latches and then front upper latches.
Page 96: Floor Standing Type (Srf)
'18 • SCM-T-251...
Page 97 '18 • SCM-T-251...
Page 98 '18 • SCM-T-251...
Page 99 '18 • SCM-T-251...
Page 100: Ceiling Concealed Type (Srr)
'18 • SCM-T-251...
Page 101 '18 • SCM-T-251...
Page 102 '18 • SCM-T-251...
Page 103 '18 • SCM-T-251...
Page 104: 4-Way Ceiling Cassette Type (Fdtc)
'18 • SCM-T-251 PJA012D786 (4) 4-way ceiling cassette type (FDTC) ① INSTALLATION MANUAL FOR CEILING CASSETTE PJA012D786B PJA012D781 Models FDTC25VF, 35VF, 50VF, 60VF – 4 WAY COMPACT (600 x 600mm) –  Install  Conﬁr  Un This manual is for the installation of an indoor unit. This manual is for the installation of an indoor unit.
Page 105 '18 • SCM-T-251 D786 ① ③ Before installation Preparation before installation D781  Install correctly according to the installation manual.  If suspension bolt becomes longer, do reinforcement of earthquake resistant.  Conﬁrm the following points:  For grid ceiling ...
Page 106 '18 • SCM-T-251 Installation of indoor unit (continued) Refrigerant pipe (continued) ④ ⑤ ⑥ < > < > 4. Insulate 6. Make sure to install the indoor unit horizontally. Conﬁrm the The case of using thicness of insulation is 10mm The case of using reinfoced insulation levelness of the indoor unit with a level gauge or transparent ...
Page 107 '18 • SCM-T-251 Drain pipe (continued) Wiring-out position and wiring connection (continued) ⑥ ⑦ Descending stop greater than 1/100 4. Insulate the drain pipe.  Be sure to insulate the drain socket and rigid PVC pipe installed indoors otherwise it may cause site) Single spilit (PAC) series dew condensation and water leakage.
Page 108 '18 • SCM-T-251 PJA012D783 source...
Page 109 '18 • SCM-T-251 ⑥ ⑥ ⑥ Note : This function is not able to be set with wireless remote controls or simple remote control (RCH-H3). For setting the swing range of other louvers, return to 1 and proceed same procedure respectively.
Page 110: Ceiling Suspended Type (Fde)
'18 • SCM-T-251 INSTALLATION MANUAL FOR CEILING SUSPENDED PFA012D628 (5) Ceiling suspended type (FDE) TYPE (FDE) Model FDE50VG ①Be ①Be This manual is for the installation of an indoor unit. CAUTION Install c For wired remote control installation, refer to page 288. For wireless kit installa- tion, refer to page 309.
Page 111 '18 • SCM-T-251 2D628 ①Before installation ①Before installation ③Preparation before installation (continued) ※Pipes can be taken out in 3 directions (rear, right or Install correctly according to the installation manual. top). (mm) Con rm the following points: ・ Cut out holes using nippers, etc. Series type Unit type/Power source speci cation...
Page 112 '18 • SCM-T-251 ⑤Refrigerant pipe ⑥Drain pipe ⑦Wi ●The drain pipes may pull out either from back, right or left side. Caution FDE ( ●Be sure to use new pipes for the refrigerant pipes. Use the ﬂare nut attached to the product Caution or a nut compatible with JIS B 8607, Class 2.
Page 113 '18 • SCM-T-251 ⑪How to set the airflow direction ⑦Wiring-out position and wiring connection (continued) Clip It is possible to change the movable range of the louver on the air outlet from FDE (small) the wired remote control. Once the top and bottom position is set, the louver roperly.
Page 114: Duct Connected Low/Middle Static Pressure Type (Fdum)
'18 • SCM-T-251 (6) Duct connected Low / Middle static pressure type (FDUM) Model FDUM50VF PJG012D008C DUCT CONNECTED MIDDLE STATIC PRESSURE AIR (a) Indoor unit CONDITIONING UNIT INSTALLATION MANUAL ○This mode blow type This manual is for the installation of an indoor unit. CAUTION For wired remote control installation, refer to page 288.
Page 115 '18 • SCM-T-251 ○This model is middle static ducted type air-conditioning unit. Therefore, do not use this model for direct ③Preparation before installation blow type air-conditioning unit. ●If suspension bolt becomes longer, do reinforcement of earthquake resistant. ①Before installation 　○For grid ceiling 　　When the suspension bolt length is over 500mm, or the gap between the ceiling and roof is ●Install correctly according to the installation manual.
Page 116 '18 • SCM-T-251 ⑤Duct Work (continued) ⑤Duct Work ⑥Re ① A corrugated board (for preventing sputtering) is attached to the main body of the air-conditioner Connecting the air intake/vent ducts 4. Refr (on the outlet port). Do not remove it until connecting the duct. As f ①Fresh Air Intake ●An air ﬁlter can be provided on the main body of the air-conditioner (on the inlet port).
Page 117 '18 • SCM-T-251 ⑥Refrigerant pipe (continued) ⑦Drain pipe (continued) 4. Refrigerant is charged in the outdoor unit. 3. Make sure to make descending slope of greater than 1/100 and do not make up-down bend As for the additional refrigerant charge for the indoor unit and piping, refer to the installation and/or trap in the midway.
Page 118 '18 • SCM-T-251 (b) Replacement procedure of the fan unit Notes (1) The unit is a heavy item. It must be supported securely and handled with care not to drop when it is necessary toreplace. Notes (2) For the maintenance space, refer to page 113. (i) Remove the control box and the side panel, and remove the screws marked in the circles (2 places) in the ﬁgure.
Page 119: Piping System
'18 • SCM-T-251 3. PIPING SYSTEM Models SCM50ZS-S1, 60ZM-S1...
Page 120: Range Of Usage & Limitations
'18 • SCM-T-251 4. RANGE OF USAGE & LIMITATIONS Model SCM50ZS-S1 SCM60ZM-S1 Item Cooling Approximately 18 to 32℃ Indoor intake air temperature (Upper, lower limits) Heating Approximately 15 to 30℃ Cooling Approximately -15 to 43℃ Outdoor air temperature (Upper, lower limits) Heating Approximately -15 to 24℃...
Page 121: Table Of Indoor Unit Combinations
・Number of connectable indoor units SCM50ZS-S1,60ZM-S1 Note(1) In case of combination with SRK-ZMX-S, SRK71ZR-S, FDEN50VF only, 3 Indoor units can be connectable. (1) Model SCM50ZS-S1 In case of SRK71ZR-S＋SRK71ZR-S, 2 Indoor units can be connectable. (a) Indoor unit SRK ZSX type only <Cooling>...
Page 122 '18 • SCM-T-251 <Heating> Heating capacity (kW) Power consumption (W) Standard current (A) Indoor unit Indoor unit capacity (kW) Total capacity (kW) combination Min. Standard Max. 220V 230V 240V Min. Standard max. 20 + 20 + 20 2.00 2.00 2.00 1210 2580 20 + 20 + 25...
Page 123 '18 • SCM-T-251 (c) Indoor unit except SRK ZSX and SKM ZSP type <Cooling> Cooling capacity (kW) Power consumption (W) Standard current (A) Indoor unit Indoor unit capacity (kW) Total capacity (kW) combination Min. Standard Max. 220V 230V 240V Min. Standard max.
Page 124: Model Scm60Zm-S1
'18 • SCM-T-251 (2) Model SCM60ZM-S1 (a) Indoor unit SRK ZSX type only <Cooling> Cooling capacity (kW) Power consumption (W) Standard current (A) Indoor unit Indoor unit capacity (kW) Total capacity (kW) combination Min. Standard Max. 220V 230V 240V Min. Standard max.
Page 125 '18 • SCM-T-251 <Heating> Heating capacity (kW) Power consumption (W) Standard current (A) Indoor unit Indoor unit capacity (kW) Total capacity (kW) combination Min. Standard Max. 220V 230V 240V Min. Standard max. 1330 1510 1270 1790 unit 1730 2310 2040 2660 20 + 20 3.00...
Page 126 '18 • SCM-T-251 (b) Indoor unit except SRK ZSX type <Cooling> Cooling capacity (kW) Power consumption (W) Standard current (A) Indoor unit Indoor unit capacity (kW) Total capacity (kW) combination Min. Standard Max. 220V 230V 240V Min. Standard max. 1080 1150 1240 unit...
Page 127 '18 • SCM-T-251 <Heating> Heating capacity (kW) Power consumption (W) Standard current (A) Indoor unit Indoor unit capacity (kW) Total capacity (kW) combination Min. Standard Max. 220V 230V 240V Min. Standard max. 1330 1140 1510 1480 1790 unit 1960 2310 2250 2660 10.3...
Page 128: Selection Charts
1.00 How to obtain the cooling and heating capacity Example : The net cooling capacity of the model SCM50ZS-S1 (SRK25ZSX-S : 3 units) with the piping length of 10m, indoor wet-bulb temperature at 19.0℃ and outdoor dry-bulb temperature 35℃ is Net cooling capacity = ( 1.87 ×...
Page 129: Outline Of Operation Control By Microcomputer
'18 • SCM-T-251 7. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 7.1 SRK, SRF and SRR series 7.1.1 SRK-ZSX series (1) Operation control function by wireless remote control Transmission section Operation section ON/OFF (luminous) button OPERATION MODE select button Press to start operation, press again Each time the button is pressed, the to stop.
Page 130 '09•SRK-DB-087D '18 • SCM-T-251 '09•SRK-DB-087D (2) Unit ON/OFF button (2) Unit ON/OFF button wireless wireless (a) Operation (a) Operation (b) Details of operation room (b) Details of operation whether to go into the COOL, DRY or HEAT modes. Function Room temperature Fan speed Flap/Louver Timer switch setting Operation mode...
Page 131 '18 • SCM-T-251 Jumpre wire (J1) (5) Selection of the annual cooling function (a) The annual cooling control is valid from factory default setting. It is possible to disable by cutting jumper wire (J3), or changing the setting of dip switch (SW2-4) on the interface kit (option) PCB if it is connected.
Page 132 '18 • SCM-T-251 (8) Eco operation Pressing the HI POWER/ECONOMY button initiate a soft operation with the power suppressed in order to avoid an excessive cooling (a) Pressing the HI/ECO button initiates a soft operation with the power suppressed in order to avoid an excessive cooling or heating. (b) The remote control displays.
Page 133 Wireless remote Angle of flap from horizontal control display Wireless remote '18 • SCM-T-251 COOL, DRY, FAN Approx. 15° Approx. 20° Approx. 25° Approx. 30° Approx. 55° control display HEAT Approx. 30° Approx. 40° Approx. 45° Approx. 50° Approx. 55° Approx.
Page 134 AUTO Air flow selection Air flow selection < = Operation mode Operation mode Room temp. – Setting temp. >5°C Room temp. – Setting temp. 5°C Cooling AUTO AUTO HIGH POWER AUTO < = < = Room temp. – Setting temp. >5°C Room temp.
Page 135 '09•SRK-DB-087D '09•SRK-DB-087D '18 • SCM-T-251 (11) Timer operation (12) Silent operation (a) Comfort start-up (ON timer operation) (11) Timer operation When the silent operation is set, the unit operates by dropping the outdoor fan speed and the compressor speed. The unit starts the operation 5 to 60 minutes earlier so that the room can approach optimum temperature at ON timer. (a) Comfort start-up (ON timer operation) SCM50 SCM60...
Page 136 '18 • SCM-T-251 (15) Display brightness adjustment This function can be used when it is necessary to adjust the brightness of unit display. Brightness level Timer light Run light 100% 100% Note (1) When the unit displays self diagnosis or service mode, brightness level is always LV2. (16) AUTO OFF operation In order to prevent the air-conditioner from continuing to operate although the person(s) has already left the room, the air-conditioner automatically stops approximalely 1 hour (or 2 hours) after the sensor judges that there is no one in the room.
Page 137 12-50rps 12-58rps 12-74rps 12-86rps 12-110rps 12-34rps 12-38rps 12-54rps 12-70rps 12-90rps 12-30rps 12-34rps 12-42rps 12-50rps 12-66rps '18 • SCM-T-251 12-30rps 12-30rps 12-30rps 12-30rps 12-30rps 12-34rps 12-38rps 12-54rps 12-70rps 12-90rps (18) Outline of automatic operation (a) Determination of operation mode (a) Determination of operation mode Operation mode is determined by indoor air temperature and outdoor air temperature as following.
Page 138 Item Cooling Heating Model '18 • SCM-T-251 SRK20 - 35 20 rps 20 rps Lower limit speed SRK50 24 rps 24 rps When this control has continued for more than 30 minutes continuously,the following wind direction control is performed. '09•SRK-DB-087D a) When the vertical wind direction is set at other than the vertical swing,the flaps change to the horizontal position.
Page 139: Srk-Zs Series
'18 • SCM-T-251 7.1.2 SRK-ZS series (1) Operation control function by wireless remote control Transmission section Operation section ON/OFF (luminous) button Press to start operation, press again to stop. OPERATION MODE select button Each time the button is pressed, the FAN SPEED button mode changes.
Page 140 '09•SRK-DB-087D '18 • SCM-T-251 '09•SRK-DB-087D (2) Unit ON/OFF button (2) Unit ON/OFF button wireless wireless (a) Operation (a) Operation (b) Details of operation room (b) Details of operation whether to go into the COOL, DRY or HEAT modes. Function Room temperature Fan speed Flap/Louver Timer switch setting Operation mode...
Page 141 '18 • SCM-T-251 J1 用 J3 用 (5) Selection of the annual cooling function Jumper wire (J1) Jumper wire (J3) (a) The annual cooling control is valid from factory default setting. It is pos- sible to disable by cutting jumper wire (J3), or changing the setting of dip switch (SW2-4) on the interface kit (option) PCB if it is connected.
Page 142 '18 • SCM-T-251 (8) Economy operation Pressing the HI POWER/ECONOMY button initiate a soft operation with the power suppressed in order to avoid an excessive cooling or heating. The unit operate 1.5℃ higher than the setting temperature during cooling or 2.5℃ lower than that during heating.
Page 143 control display Left approx. 50° Left approx. 20° Center Right approx. 20° Right approx. 50° Center installation Right end installation Left approx. 50° Left approx. 45° Left approx. 30° Center Right approx. 20° '18 • SCM-T-251 Left approx. 20° Center Right approx.
Page 144 Cooling Heating '18 • SCM-T-251 Flap Up/down swing Louver Center (Fixed) Cooling Heating Flap Horizontal blowing (Fixed) Slant forwardl blowing (Fixed) Louver Wide (Fixed) room Operation mode Air flow direction contorol < = < = Room temp. – Setting temp. 2°C 2°C <...
Page 145 The OFF timer can be set at a specific time (in 10-minute units) within a 24-hour period. (c) OFF timer operation The OFF timer can be set at a specific time (in 10-minute units) within a 24-hour period. (d) Weekly timer operation '18 •...
Page 146 '18 • SCM-T-251 '09•SRK-DB-087D (16)　Outline of dehumidifying (DRY) operation (d) Countermeasure for excessive temperature rise If it feels excessive temperature rise in heating operation, setting temperature can be lower. (a) Purpose of DRY mode The purpose is "Dehumidification", and not to control the humidity to the target condition. Indoor/outdoor unit control the operation condition to reduce the humidity, and also prevent over cooling.
Page 147 '09•SRK-DB-087D '18 • SCM-T-251 (iii) Reset conditions: When either of the following condition is satisfied. The outdoor air temperature (TH2) becomes 6ºC ~ 11ºC. (18) Protective control function The compressor command speed is 0 rps. Dew prevention control [Cooling] Compressor overheat protection Prevents dewing on the indoor unit.
Page 148: Skm-Zsp Series
'18 • SCM-T-251 7.1.3 SKM-ZSP series (1) Operation control function by wireless remote control Operation section FAN SPEED button OPERATION MODE select button Each time the button is pressed, the Each time the button pressed, the display is switched over in turn. display is switched over in turn.
Page 149 Strictly prohibited • Do not go near high temperature • Do not leave the remote control ex- • Do not drop the remote control. places, such as an electric carpet posed to direct sunlight or other Handle with care. '18 • SCM-T-251 or stove.
Page 150 '18 • SCM-T-251 (5) High power operation Pressing the HI POWER/ECONO button intensifies the operating power and initiates powerful cooling and heating operation for 15 minutes continuously. The wireless remote control displays and the FAN SPEED display disappears. (a) During the HIGH POWER operation, the room temperature is not controlled. When it causes an excessive cooling and heating, press the HI POWER/ECONO button again to cancel the HIGH POWER operation.
Page 151 '18 • SCM-T-251 (b) Swing Flap moves in upward and downward directions continuously. In HEAT operation In COOL, DRY operation ◆ ◆ Approx. 20° Approx. 35° Approx. 59° Approx. 65° (c) Memory flap When you press the AIR FLOW (UP/DOWN) button once while the flap is operating, it stops swinging at an angle. Since this angle is memorized in the microcomputer, the flap will automatically be set at this angle when the next operation is started.
Page 152 '18 • SCM-T-251 (ii) Hot keep operation If the hot keep operation is selected during the heating operation, the indoor blower is controlled based on the temper- ature of the indoor heat exchanger (Th2) to prevent blowing of cool wind. However, if the fan speed setting is HI and room temperature is 19 ℃...
Page 153 '18 • SCM-T-251 (12) Outline of automatic operation (a) Determination of operation mode The unit checks the indoor air temperature and the outdoor air temperature, determines the operation mode, and then begins in the automatic operation. Cooling 27.5 25.5 Dehumidifying Indoor air temperature (˚C) 18.0 Heating...
Page 154: Srf, Srr Series
'18 • SCM-T-251 7.1.4 SRF, SRR series (1) Operation control function by wireless remote control Operation section Transmission section OPERATION MODE select button ON/OFF (luminous) button Each time the button is pressed, the mode changes. Press to start operation, press again to stop.
Page 155 '18 • SCM-T-251 Unit display section Models SRR25, 35, 50, 60ZM-S RUN (HOT KEEP) light (green) • Illuminates during operation. • Blinks when air flow stops due to the ‘HOT Wireless remote control signal receiver KEEP’ and ‘CLEAN operation’. 1.5 sec. Unit ON/OFF button HOT KEEP This button can be used for turning on/...
Page 156 '18 • SCM-T-251 (3) Auto restart function Auto restart function records the operational status of the air-conditioner immediately prior to be switched off by a power cut, and then automatically resumes operations after the power has been restored. The following settings will be cancelled: Timer settings (ii) HIGH POWER operations...
Page 157 '18 • SCM-T-251 (5) Selection of the annual cooling function (a) The annual cooling function can be enabled or disabled by means of the jumper wire (J172 or JA3) on the indoor unit PCB or the dip switch (SW2-4) on the interface kit (option) PCB. Interface kit Jumper wire (SC-BIKN2-E)
Page 158 '18 • SCM-T-251 (6) High power operation Pressing the HI POWER/ECONO button intensifies the operating power and initiates powerful cooling and heating operation for 15 minutes continuously. The wireless remote control displays and the FAN SPEED display disappears. (a) During the HIGH POWER operation, the room temperature is not controlled. When it causes an excessive cooling and heating, press the HI POWER/ECONO button again to cancel the HIGH POWER operation.
Page 159 '18 • SCM-T-251 Swing Swing flap Flap moves in upward and downward directions continuously. In HEAT operation In COOL, DRY, FAN operation Approx.60° Approx.44° Approx.12° Approx.5° Approx. Memory flap (Flap stopped) 5° When you press the AIR FLOW button once while the flap is operating, it stops swinging at the position. Since this angle Approx.
Page 160 '18 • SCM-T-251 (10) Timer operation Comfortable timer setting (ON timer) If the timer is set at ON when the operation select switch is set at the cooling or heating, or the cooling or heating in auto mode operation is selected, the comfortable timer starts and determines the starting time of next operation based on the initial value of 15 minutes and the relationship between the room temperature at the setting time and the set- ting temperature.
Page 161 '18 • SCM-T-251 (ii) Control B If the float switch detects any anomalous drain condition, the drain motor is turned ON for 5 minutes, and at 10 seconds after the drain motor OFF it checks the float switch. If it is normal, the unit is stopped under the normal mode or, if there is any anomalous condition, displayed by the flashing of display lights and the drain motor is turned ON.
Page 162 (ii) '18 • SCM-T-251 (iii) Signals of wireless remote control (Display) ±0 –6 –5 –4 –3 –2 –1 Cooling Setting Dehumidifying temperature Heating When the unit is operated automatically with the wired remote control connected, the cooling operation is controlled according to the display temperatures while the setting temperature is compensated by +1°C during dehumidifying or by +2°C during heating.
Page 163 '18 • SCM-T-251 (b) Control of input signal Control of input signal (switch input, timer input) connectors (CnT) are provided on the printed circuit board of indoor unit. However, when the operation of air-conditioner is under the “ CENTER ” mode, the wired remote control by CnT is invalid. Level input If the factory settings (Jumper wire J1 EXTERNAL INPUT on the PCB of indoor unit) are set, or “LEVEL IN- PUT”...
Page 164: Fdtc, Fde And Fdum Series
'18 • SCM-T-251 7.2 FDTC, FDE and FDUM series 7.2.1 Remote control (Option parts) Model RC-EX3 ⑤ LCD (With backlight) ③ F2 switch ④ Operation ⑥ USB port (mini-B) ① Run/Stop switch ② F1 switch Touch panel system, which is operated by tapping the LCD screen with a finger, is employed for any operations other than the ①Run/Stop, ②F1 and ③F2 switches.
Page 165 '18 • SCM-T-251 Wired remote control Model RC-E5 The figure below shows the remote control with the cover opened. Note that all the items that may be displayed in the liquid crystal display area are shown in the figure for the sake of explanation Characters displayed with dots in the liquid crystal display area are abbreviated.
Page 166: Operation Control Function By The Wired Remote Control
'18 • SCM-T-251 7.2.2 Operation control function by the wired remote control Model RC-EX3 (1) Switching sequence of the operation mode switches of remote control (a) Tap the change operation mode button on the TOP screen. (b) When the change operation mode screen is displayed, tap the button of desired mode. (c) When the operation mode is selected, the display returns to the TOP screen.
Page 167 '18 • SCM-T-251 ●Content memorized with the power failure compensation are as follows. Note (1) Items (f) and (g) are memorized regardless whether the power failure compensation is effective or not while the setting of silent mode is cancelled regardless whether the power failure compensation is effective or not. At power failure –...
Page 168 '18 • SCM-T-251 Model RC-E5 Switching sequence of the operation mode switches of remote control COOL HEAT AUTO CPU reset This functions when “CHECK” and “ESP” buttons on the remote control are pressed simultaneously. Operation is same as that of the power source reset. Power failure compensation function (Electric power source failure) •...
Page 169: Operation Control Function By The Indoor Control
'18 • SCM-T-251 7.2.3 Operation control function by the indoor control (1) Auto operation (a) If “Auto” mode is selected by the remote control, the heating and the cooling are automatically switched according to the difference between outdoor air temperature and setting temperature and the difference between setting temperature and return air temperature.
Page 170: Operations Of Functional Items During Cooling/Heating
'18 • SCM-T-251 　 (ii) Regardless of the setting temperature, the cooling or heating operation mode is judged according to the "Judgment based on Room temperature/Cooling or Heating and Outdoor temperature/Cooling or Heating". 1) I n case of "Room temperature/Cooling < Indoor return air temperature" and "Outdoor temperature/Cooling < Out- door air temperature"...
Page 171: Timer Operation
'18 • SCM-T-251 Timer operation (a) RC-EX3 (i) Sleep timer Set the time from the start to stop of operation. The time can be selected in the range from 30 to 240 minutes (in the unit of 10-minute). Note (1) Enable the “Sleep timer” setting from the remote control. If the setting is enabled, the timer operates at every time. (ii) Set OFF timer by hour Set the time to stop the unit after operation, in the range from 1 to 12 hours (in the unit of hour).
Page 172: Remote Control Display During The Operation Stop
'18 • SCM-T-251 Remote control display during the operation stop When the operation is stopped (the power source is turned ON), it displays preferentially the “Room temperature”, “Center/ Remote”, “Filter sign”, “Inspection” and “Timer operation”. Hot start (Cold draft prevention at heating) (a) Operating conditions When either one of following conditions is satisfied, the hot start control is performed.
Page 173: Auto Swing Control (Fdtc, Fde Only)
'18 • SCM-T-251 Auto swing control (FDTC, FDE only) Note Even if [Auto Swing] is selected, the louver position with anit draft function is fixed to position 1. (a) RC-EX3 Louver control To operate the swing louver when the air-conditioner is operating, press the “Direction” button on the TOP screen of remote control.
Page 174: Thermostat Operation
'18 • SCM-T-251 Thermostat operation (a) Cooling (i) Thermostat is operated with the room temperature control. (ii) Thermostat is turned ON or OFF relative to the set room temperature as shown below. Thermostat ON Temperature drop Thermostat OFF Temperature rise Set room temperature (iii) Thermostat is turned ON when the room temperature is in the range of -1 <...
Page 175: Filter Sign
'18 • SCM-T-251 (d) Fan control during cooling thermostat OFF (i) Following fan controls during the cooling thermostat OFF can be selected with the indoor function setting of the wired remote control. ① Low fanspeed, ② Set fan speed (Factory default), ③ Intermittence, ④ Fan OFF (ii) When the “Low fan speed”...
Page 176: Drain Pump Control
'18 • SCM-T-251 (12) Drain pump control This control is operated when the inverter frequency is other than 0 Hz during the cooling operation and automatic cooling and dehumidifying operations. (b) Drain pump ON condition continues for 5 minutes even when it enters the OFF range according to (i) above after turning the drain pump ON, and then stops.
Page 177: Cooling, Dehumidifying Frost Protection
'18 • SCM-T-251 Operation check mode There is no communication with the outdoor unit but it allows performing operation in respective modes by operating the remote control. (d) Drain pump test run mode As the drain pump test run is established, the drain pump only operates and during the operation protective functions by the microcomputer of indoor unit become ineffective.
Page 178: Anomalous Fan Motor
'18 • SCM-T-251 (17) Anomalous fan motor After starting the fan motor, if the fan motor speed is 200 min or less is detected for 30 seconds continuously and 4 times within 60 minutes, then fan motor stops with the anomalous stop (E16). (b) If the fan motor fails to reach at -50 min less than the required speed, it stops with the anomalous stop (E20).
Page 179: Abnormal Temperature Sensor (Return Air/Indoor Heat Exchanger) Broken Wire/Short-Circuit Detection
'18 • SCM-T-251 (20) Abnormal temperature sensor (return air/indoor heat exchanger) broken wire/short-circuit detection Broken wire detection When the return air temperature sensor detects -55°C or lower or the heat exchanger temperature sensor detect -55°C or lower for 5 seconds continuously, the compressor stops. After a 3-minute delay, the compressor restarts but, if it is detected again within 60 minutes after the initial detection for 6 minutes continuously, stops again (the return air temperature sensor: E7, the heat exchanger temperature sensor: E6).
Page 180 '18 • SCM-T-251 (b) Input for external control The external input for the indoor unit can be selected from the following input. Input name Content 1 Run/Stop Refer to [(21) (c) Remote operation input] 2 Premission/Prohibition Refer to [(22) Operation permission/prohibition] 3 Cooling/Heating Refer to [(24) Selection of cooling/heating external input function] 4 Emergency stop...
Page 181: Operation Permission/Prohibition
'18 • SCM-T-251 Individual operation (Factory default) All units operation (Local setting) Only the unit Only the unit All units in one All units in one directly connected CnT-6 or directly connected remote control remote control to the remote CnTA to the remote control system can be system can be...
Page 182 '18 • SCM-T-251 (a) In case of CnT ① Operation stop level > CnTA ③ Operation permission/prohibition level Operation Operation Operation Stop Stop Stop Level input Operation permission CnTA Operation prohibition Operation permission/ prohibition setting Operation Operation( ) Operation Stop Stop Stop Actual operation...
Page 183: Temporary Stop Input
'18 • SCM-T-251 (23) Temporary stop input In case of temporary stop, operation lamp of remote control lights, but indoor/outdoor unit stop the operation. (a) In case of “level input” setting (Factory default) Input signal to CnT-6 or CnTA is OFF → ON : Temporary stop Input signal to CnT-6 or CnTA is OFF → ON : Normal operation CnT-6 or CnTA input Actual operation Temporary stop Temporary stop Remote control...
Page 184: Fan Control At Heating Startup
'18 • SCM-T-251 (25) Fan control at heating startup Starting conditions At the start of heating operation, if the difference of setting temperature and return air temperature is 5°C or higher after the end of hot start control, this control is performed. (b) Contents of control (i) Sampling is made at each minute and, when the indoor unit heat exchanger temperature (detected with Thi-R) is 37°C or higher, present number of revolutions of indoor unit fan speed is increased by 10 min...
Page 185: Auto Temp. Setting (Rc-Ex3 Only)
'18 • SCM-T-251 (32) Auto temp. setting (RC-EX3 only) Setting temperature is adjusted automatically at the adequate temperature the center setting temperature. is 24°C by correcting the outdoor air temperature. (33) Fan circulator operation (RC-EX3 only) When the fan is used for circulation, the unit is operated as follows depending on the setting with the remote control. (a) If the invalid is selected with the remote control, the fan is operated continuously during the fan operation.
Page 186: Outdoor Units
'18 • SCM-T-251 7.3 Outdoor units 7.3.1 Outline of heating operation (1) Summary (a) Capacity control (i) Indoor unit SRK ** ZSX models only Model SCM50ZS-S1 SCM60ZM-S1 1.4 7.5 kW 1.5 7.8 kW Capacity (ii) Indoor unit SKM**ZSP-S models only Model...
Page 187: Outline Of Cooling Operation
※ Depends on an operation condition, the time can be longer than 7 minutes. 7.3.2 Outline of cooling operation (1) Summary (a) Capacity control (i) Indoor unit SRK ** ZSX models only Model SCM50ZS-S1 SCM60ZM-S1 Capacity 1.8 7.1 kW 1.8 7.5 kW (ii) Indoor unit SKM ** ZSP-S models only...
Page 188: Operation Of Major Functional Components In Cooling Mode
'18 • SCM-T-251 (b) Outdoor compressor speed control Indoor compressor total speed value Decision speed 0 rps 0 rps A rps A rps or less More than A rps, but B rps or less A rps to B rps More than B rps B rps Values of A, B Model...
Page 189: Cooling Low Outdoor Temperature Protective Control
'18 • SCM-T-251 (3) Cooling low outdoor temperature protective control (a) Operating conditions When the outdoor air temperature (Tho-A) is 22°C or lower continues for 20 seconds while compressor speed is other than 0 rps. (b) Detail of operation (i) The lower limit of compressor speed is set to B or D rps and even if the speed becomes lower than B or D rps, the speed is kept to B or D rps.
Page 190: Heating Overload Protective Control
'18 • SCM-T-251 (5) Heating overload protective control (a) Operating conditions Tho-A (b) Detail of operation A, C or E (ii) B, D or F B, D or F when the thermostat OFF, the speed is (iii) D or F. (c) Reset conditions (model SCM60 : 11 ) Tho-A...
Page 191: Refrigeration Cycle System Protective Control
'18 • SCM-T-251 (7) Refrigeration cycle system protective control (a) Starting condition This control starts when the following conditions are satisfied. (i) 　 When it has elapsed 30 minutes after the compressor was changed from OFF to ON in the cooling operation mode for more than 5 minutes. (ii) 　...
Page 192: Compressor Overheat Protection
'18 • SCM-T-251 (10) Compressor overheat protection (a) Purpose (b) Detail of operation Tho-D (Example) Fuzzy 3 minutes 3 minutes 3 minutes Discharge pipe temperature (˚C) 105 115 95 105 3 minutes 95 105 3 minutes Item (4) Lower limit speed Cooling Heating Model...
Page 193: Current Cut
'18 • SCM-T-251 (12) Current cut (a) Purpose (b) Detail of operation (13) Outdoor unit failure compressor (23) Indoor fan motor protection (14) Discharge pipe sensor disconnection protection control (SRF:150) (a) When the compressor speed is other than 0 rps. (i) Tho-D(10)-Tho-D(0) <...
Page 194: Outdoor Fan Motor Protection
(ii) (ii) (17) Rotor lock '18 • SCM-T-251 (17) Rotor lock (18) Outdoor fan motor protection (18) Outdoor fan motor protection (19) Outdoor fan control at low outdoor temperature (19) Outdoor fan control at low outdoor temperature Cooling Cooling Operating conditions Operating conditions Tho-A Tho-A...
Page 195: Outdoor Fan Control At Overload
'18 • SCM-T-251 (20) Outdoor fan control at overload Cooling (i) Starting condition When the outdoor air temperature (Tho-A) has risen higher than 41°C for 30 seconds continuously while the com- pressor is operating. Under control Normal operation Outdoor air temperature(ºC) (ii) Contents of control Under control The outdoor fan is stepped up by 3 speed.
Page 196: Maintenance Data
'18 • SCM-T-251 8. MAINTENANCE DATA 8.1 SRK, SKM, SRF and SRR series (1) Cautions (1) Cautions (2) Items to check before troubleshooting (2) Items to check before troubleshooting source source (3) Troubleshooting procedure (If the air-conditioner does not run at all) (3) Troubleshooting procedure (If the air-conditioner does not run at all) satisfied satisfied...
Page 197: Troubleshooting Procedure (If The Air-Conditioner Runs)
'18 • SCM-T-251 (4) Troubleshooting procedure (If the air-conditioner runs) 196. 197−203. 197−203.
Page 198: Self-Diagnosis Table
'18 • SCM-T-251 (5) Self-diagnosis table Wired Indoor unit display panel remote Description Cause Display (ﬂashing) condition control TIMER of trouble display light light When a heat exchanger sensor 1 wire disconnection is detected while • Broken heat exchanger sensor 1-time Heat exchanger 1 wire, poor connector...
Page 199: Service Mode (Trouble Mode Access Function)
'18 • SCM-T-251 (6) Service mode (Trouble mode access function) (a) Explanation of terms Explanation Term The service mode is the mode where service data are displayed by flashing of the display lights Service mode when the operations in item (b) below are performed with the indoor control. These are the contents of error displays and protective stops which occurred in the past in the air- conditioner system.
Page 200 '09•SRK-DB-087D '18 • SCM-T-251 4-time flash 2-time flash. wireless mode mode Self-diagnosis data data? wireless mode mode Wireless remote control setting Contents of output data Operation mode Fan speed mode wireless Indicates the number of Wireless remote control setting occasions previous to the present Temperature setting the error display data are from.
Page 201 '09•SRK-DB-087D '18 • SCM-T-251 (Example) Wireless remote control setting Operation Displayed data Fan speed Temperature mode mode setting Displays the reason for the stop (error code) the previous time an error was displayed. 21ºC Displays the reason for the stop (error code) 2 times previous when an error was displayed. 22ºC Cooling 23ºC...
Page 202 '18 • SCM-T-251 (c) Error code, stop code table Number of ﬂashes when in service mode Stop coad Error Auto TIMER Error content Cause Occurrence conditions display recovery light light Error coad (10's digit) (1's digit) Normal The wired remote control wire Y is open. The wired remote 1-time Error of wired remote control Broken wired remote control wire,...
Page 203 '18 • SCM-T-251 4-time flash 2-time flash. (d) Operation mode, Fan speed mode information tables (i) Operation mode (ii) Fan speed mode Display pattern when Display pattern when Fan speed in service mode in service mode Operation mode mode when when there is an there is an RUN light...
Page 204 '09•SRK-DB-087D '18 • SCM-T-251 (e) Temperature information Room temperature sensor, indoor heat exchanger sensor, outdoor air temperature sensor, outdoor heat exchanger sensor temperature Unit: °C TIMER light (1’s digit) RUN light (10’s digit) Buzzer sound (sounds for 0.1 second) (does not sound) temperature information Sensor value displayed when the error code is normal Sensor name...
Page 205 '09•SRK-DB-087D '18 • SCM-T-251 (ii) Discharge pipe sensor temperature Unit: °C TIMER light (1’s digit) RUN light (10’s digit) Buzzer sound (sounds for 0.1 second) (does not sound) temperature information Sensor value displayed when the error code is normal -64ºC data 0.1 sec.
Page 206 '09•SRK-DB-087D '18 • SCM-T-251 Service data record form Wireless r Operation mode Fan speed mode Wireless r Wireless r Wireless r Wireless r Wireless r wireless Refer 198)
Page 207: Inspection Procedures Corresponding To Detail Of Trouble
'18 • SCM-T-251 (7) Inspection procedures corresponding to detail of trouble Sensor error Broken sensor wire, connector poor connection Discharge pipe and power transistor sensor Sensor temperature characteristics Room temp., indoor heat exchanger temp., out- temperature characteristics door heat exchanger temp., outdoor air temp.
Page 208 '18 • SCM-T-251 Limit switch anomaly (SRK20, 25, 35, 50ZSX-S, -W only) Defective limit switch, defective indoor control PCB, Defective air inlet panel set Is the air inlet panel set correctly? Correction, re-set Are limit switch OK ? Defective limit switch Note(1) Check if the limit switch functions properly or not by seeing whether the lamp continues to blink or can be reset by pressing the limit swit- -ch by hand while the air inlet panel is removed.
Page 209 '18 • SCM-T-251 Over heat of compressor Gas shortage, defective discharge pipe sensor 205) main Error of signal transmission Wiring error including power cable, defective indoor/ outdoor PCB ② ③ indoor ② ③ indoor ① ② outdoor sub...
Page 210 '18 • SCM-T-251 Trouble of outdoor unit Insufﬁcient refregerant amount, Faulty power transistor, Broken compressor wire Service valve close, Defective EEV, Defective outdoor PCB source source source source − − − ◆ main operation − Notes (1) 214.
Page 211 '18 • SCM-T-251 Rotor lock Defective compressor, defective outdoor PCB main See page 206. Drain abnormality (SRR only) [Drain piping defective,pump defect, float switch, indoor PCB] Indoor PCB is Has an overflow developed? Is the float switch operating? defective. Inspect float switch. Is the drain piping clogged or at the wrong gradient? Is there output for drain motor driver?
Page 212: Phenomenon Observed After Shortcircuit, Wire Breakage On Sensor
'18 • SCM-T-251 (8) Phenomenon observed after shortcircuit, wire breakage on sensor (a) Indoor unit Phenomenon Operation Sensor mode Shortcircuit Disconnected wire Cooling Room temperature sensor Heating Freezing cycle system protection trips and stops the compressor. Cooling Heat exchanger sensor Heating Cooling Humidity sensor...
Page 213: Checking The Indoor Electrical Equipment
Cooling Heat exchanger sensor Heating Defrosting is performed for 10 minutes at approx. 40 minutes. Cooling Ourdoor air '18 • SCM-T-251 temperature sensor Defrosting is performed for 10 minutes at approx. 40 minutes. Heating Discharge pipe All modes sensor (9) Checking the indoor electrical equipment (a) Indoor PCB check procedure Is there voltage between terminal Inspect power source...
Page 214: How To Make Sure Of Wireless Remote Control
Operation SW ON Measure in this section '18 • SCM-T-251 (10) How to make sure of wireless remote control wireless wireless wireless wireless wireless wireless Simplified check method of wireless remote control It is normal if the signal transmission section of the wireless remote control emits a whitish light at each transmission on the monitor of digital camera.
Page 215: Outdoor Unit Inspection Points
'18 • SCM-T-251 (12) Outdoor unit inspection points Models SCM50ZS-S1,60ZM-S1 Color marks Mark Color Black ◆Power source and serial signal inspection CAUTION- HIGH VOLTAGE Blue ① to ②: AC 220/230/240V Brown High voltage is produced in the control box. Don't touch ②...
Page 216 '18 • SCM-T-251 (a) Inspection of electronic expansion valve (ii) (iii) (iv) • Inspection of electronic expansion valve as a separate unit Measuring point Resistance when normal (b) Outdoor fan motor check procedure main (i) Outdoor main PCB output check ...
Page 217: Fdtc, Fde And Fdum Series
'18 • SCM-T-251 8.2 FDTC, FDE and FDUM series 8.2.1 Diagnosing of microcomputer circuit Selfdiagnosis function (a) Check indicator table Whether a failure exists or not on the indoor unit and outdoor unit can be know by the contents of remote control error code, indoor/outdoor unit green LED (power pilot lamp and microcomputer normality pilot lamp) or red LED (check pilot lamp).
Page 218 '18 • SCM-T-251 (ii) Outdoor unit Remote control Indoor control PCB Reference Location of trouble Description of trouble Repair method Green Error code Red LED Red LED page Installation, operation status • Higher outdoor heat exchanger temperature Repair Replacement, repair Outdoor heat exchanger Keeps •...
Page 219 '18 • SCM-T-251 (iii) Display sequence of error codes or inspection indicator lamps ■ Occurrence of one kind of error Displays are shown respectively according to errors. ■ Occurrence of plural kinds of error Section Category of display Error code on remote •...
Page 220: Troubleshooting Procedure
'18 • SCM-T-251 ■ Error log and reset Error indicator Memorized error log Reset • Stop the unit by pressing the ON/OFF Remote control display • Higher priority error is memorized. switch of remote control. • If the unit has recovered from anomaly, it Red LED on indoor control PCB •...
Page 221 '18 • SCM-T-251 (i) FDTC series △ PSB012D976C 1) Control PCB Replace and set up the PCB according to this instruction. Replace and set up the PCB according to this instruction. a) Set to an appropriate address and function using switch on PCB. 　...
Page 222 '18 • SCM-T-251 This PCB is a general PCB. Replace the PCB according to this instruction. 2) Power PCB △ PSB012D953A This PCB is a general PCB. Replace the PCB according to this instruction. a) Replace the PCB a) Replace the PCB i) Unscrew terminal of the wiring(yellow/green) soldered to PCB from the box.
Page 223 '18 • SCM-T-251 (ii) FDE, FDUM series △ PSB012D990B 1) Control PCB Replace and set up the PCB according to this instruction. Replace and set up the PCB according to this instruction. a) Set to an appropriate address and function using switch on PCB. 　...
Page 224 '18 • SCM-T-251 2) Power PCB △ PSB012D992 This PCB is a general PCB. Replace the PCB according to this instruction. This PCB is a general PCB. Replace the PCB according to this instruction. a) Replace the PCB a) Replace the PCB i) Unscrew terminal of the wiring(yellow/green) connected to terminal block (CNWO) from the box.
Page 225: Check Of Anomalous Operation Data With The Remote Control
'18 • SCM-T-251 (4) Check of anomalous operation data with the remote control (a) In case of RC-EX3 remote control [Operating procedure] ➀ On the TOP screen, touch the buttons in the order of “Menu” ➝ “Service setting” ➝ “Service & Maintenance” ➝...
Page 226 '18 • SCM-T-251 (b) In case of RC-E5 remote control Number Data Item Operation data can be checked with remote control unit operation. (Operation Mode) (Set Temperature) ➀ Press the button. (Return Air Temperature) The display change “ ” (Remote Control Sensor Tempeature) ➁...
Page 227: Inverter Checker For Diagnosis Of Inverter Output
'18 • SCM-T-251 Inverter checker for diagnosis of inverter output 　 ●Checking method (a) Setup procedure of checker. Power OFF (Turn off the breaker). (ii) Remove the terminal cover of compressor and disconnect the wires (U, V, W) from compressor. (iii) Connect the wires U (Red) , V (White) and W (Black) of the checker to the terminal of disconnected wires (U, V, W) from compressor respectively.
Page 228: Troubleshooting Flow
'18 • SCM-T-251 8.2.2 Troubleshooting flow (1) List of troubles Remote control display Description of trouble Reference page None Operates but does not cool None Operates but does not heat None Earth leakage breaker activated None Excessive noise/vibration (1/3) None Excessive noise/vibration (2/3) None Excessive noise/vibration (3/3)
Page 229: Troubleshooting
'18 • SCM-T-251 Troubleshooting Green Content Error code Keeps flashing Stays OFF Indoor None Operates but does not cool Remote control: – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Check the indoor unit fan operation. Check the temperature differnce between return and supply air.
Page 230 '18 • SCM-T-251 Green Content Error code Keeps flashing Stays OFF Indoor None Operates but does not heat Remote control: Outdoor – Stays OFF 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Check the indoor unit fan operation. Check the temperature differnce between return and supply air.
Page 231 '18 • SCM-T-251 Green Error code Content Stays OFF Stays OFF Indoor None Earth leakage breaker activated Remote control: Outdoor – Stays OFF 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Are OK the insulation resistance and Replace compressor. coil resistance of compressor? 2.
Page 232 '18 • SCM-T-251 Green Error code Content – – Indoor None Excessive noise/vibration (1/3) Remote control: – – Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure If excessive noise/vibration persists when sufficient Does time has elapsed after noise/vibration stopping the unit, it is occur during or soon considered that the air-...
Page 233 '18 • SCM-T-251 Green Error code Content – – Indoor None Excessive noise/vibration (2/3) Remote control: – – Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure From previous page Rearrange the piping to Are the pipes avoid contact with the contacting the casing.
Page 234 '18 • SCM-T-251 Green Error code Content – – Indoor None Excessive noise/vibration (3/3) Remote control: – – Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure From previous page If insufficient cooling/ Adjustment heating problem happens during commissioning due to anomalous operating Does noise/vibration occur when the conditions at cooling/...
Page 235 '18 • SCM-T-251 Green Error code Content Louver motor failure Keeps flashing Stays OFF Indoor None Remote control: (FDTC and FDE only) – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model FDTC and FDE series only Diagnosis Countermeasure L Check at the indoor unit side. Operate after waiting for more than 1 minute.
Page 236 '18 • SCM-T-251 Green Power source system error Error code Content Stays OFF Stays OFF Indoor None Remote control: (Power source to indoor control PCB) – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure AC220/240V detected between ①...
Page 237 '18 • SCM-T-251 Green Error code Content Power source system error Keeps flashing 3-time flash Indoor None Remote control: (Power source to remote control) – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Isn't there any Correct.
Page 238 '18 • SCM-T-251 Green Error code Content INSPECT I/U Keeps flashing Stays OFF Indoor INSPECT I/U Remote control: (When 1 or 2 remote controls are connected) – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Are 2 units of remote control connected? ⑴，...
Page 239 '18 • SCM-T-251 Green Error code Content INSPECT I/U Keeps flashing Stays OFF Indoor INSPECT I/U Remote control: (Connection of 3 units or more remote control) – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Are more than Reduce to 2 units or less.
Page 240 '18 • SCM-T-251 Green Error code Content Communication error at Indoor Keeps flashing Stays OFF Remote control: WAIT initial operation (1/3) – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure When the remote control LCD displays “ ”...
Page 241 '18 • SCM-T-251 Green Error code Content Communication error at Indoor Keeps flashing Stays OFF Remote control: WAIT initial operation (2/3) – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure When the fuse is blown, the method to inspect outdoor sub PCB before replacing the power From previous page...
Page 242 '18 • SCM-T-251 Green Error code Content Communication error at Indoor Keeps flashing Stays OFF Remote control: WAIT initial operation (3/3) – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure When the remote control display is extinguished after the power on.
Page 243 '18 • SCM-T-251 Green Error code Content Remote control Keeps flashing Stays OFF Indoor Remote control: communication circuit error – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Malfunction by noise Is it possible to Check peripheral reset normally by the power reset? environment.
Page 244 '18 • SCM-T-251 Green Error code Content Keeps flashing 2-time flash Indoor Communication error during operation Remote control: – 6-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Note (1) Inspect faulty connections (disconnection, looseness) on the outdoor unit terminal block. Is the connection of signal Repair signal wires.
Page 245 '18 • SCM-T-251 Green Error code Content Indoor heat exchanger Keeps flashing 1-time flash Indoor Remote control: temperature sensor anomaly – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the connection of indoor heat Correct. → Insert connector exchanger temperature sensor securely.
Page 246 '18 • SCM-T-251 Green Error code Content Return air temperature Keeps flashing 1-time flash Indoor Remote control: sensor anomaly – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the connection of return Correct. → Connect air temperature sensor connector.
Page 247 '18 • SCM-T-251 Green Error code Content Keeps flashing 1-time flash Indoor Heating overload operation Remote control: – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Wash. Is the air filter clogged? 2. Error detection method Is the Defective indoor heat indoor heat exchanger...
Page 248 '18 • SCM-T-251 Green Error code Content Drain trouble Keeps flashing 1-time flash Indoor Remote control: （ FDTC and FDUM only ） – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model FDTC and FDUM series only Diagnosis Countermeasure Check the error data in the remote control. Is there any overflow? Is DC 12V Check float switch...
Page 249 '18 • SCM-T-251 Excessive number of connected Green Error code Content indoor units (more than 17 units) Keeps flashing Stays OFF Indoor Remote control: by controlling with one remoto control – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Aren't more than 17...
Page 250 '18 • SCM-T-251 Green Error code Content Address setting error of Keeps flashing Keeps flashing Indoor Remote control: indoor units Outdoor – Stays OFF 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure E11 occurs Is “Master IU address set” function of remote 2.
Page 251 '18 • SCM-T-251 Green Error code Content Keeps flashing 1-time flash Indoor Remote control: Indoor fan motor anomaly – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Does any foreign material Remove foreign material. intervene in rotational area of fan propeller? Does the fan 2.
Page 252 '18 • SCM-T-251 Green Error code Content Indoor unit operation check, Keeps flashing 1-time flash Indoor Remote control: drain motor check setting error – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure E19 occurs when the power ON Defective indoor control Is SW7-1 PCB (Defective SW7)
Page 253 '18 • SCM-T-251 Green Error code Content Indoor fan motor rotation Keeps flashing 1-time flash Indoor Remote control: speed anomaly – Outdoor Stays OFF 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Does any foreign material Remove foreign material. intervene in rotational area of fan propeller? Does the fan...
Page 254 '18 • SCM-T-251 Green Error code Content Remote control Keeps flashing Stays OFF Indoor Remote control: temperature sensor anomaly – Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the remote Correct. control temperature sensor connected properly? Are the 2.
Page 255 '18 • SCM-T-251 Green Error code Content Indoor Keeps flashing Stays OFF Cooling high pressure operation Remote control: – 2-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure * For the characteristics of outdoor heat exchanger temperature Are normal sensor, refer to E37.
Page 256 '18 • SCM-T-251 Green Error code Content Keeps flashing Stays OFF Indoor Discharge pipe temperature error Remote control: – 5-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure * For the characteristics of discharge Are the pipe temperature, refer to E39. characteristics of Replace discharge pipe discharge pipe temperature...
Page 257 '18 • SCM-T-251 Green Error code Content Outdoor heat exchanger Keeps flashing Stays OFF Indoor Remote control: temperature sensor anomaly – 8-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the outdoor heat exchanger temperature Correct connector. sensor connector connected properly?
Page 258 '18 • SCM-T-251 Green Error code Content Outdoor air temperature Keeps flashing Stays OFF Indoor Remote control: sensor anomaly – 8-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure the suction pipe Correct connector. temperature sensor connector connected properly? For the characteristics of suction pipe temperature sensor, see the following graph.
Page 259 '18 • SCM-T-251 Green Content Error code Discharge pipe Keeps flashing Stays OFF Indoor Remote control: temperature sensor anomaly – 8-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the discharge pipe temperature sensor Correct connector. connector connected properly? 2.
Page 260 '18 • SCM-T-251 Green Content Error code Keeps flashing Stays OFF Indoor Current cut (1/2) Remote control: – 1-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the Power source Check power source. voltage OK? Are the 2.
Page 261 '18 • SCM-T-251 Green Error code Content Keeps flashing Stays OFF Indoor Current cut (2/2) Remote control: – 1-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure From previous page Is the checked result of power Defective outdoor main transistor module PCB →...
Page 262 '18 • SCM-T-251 Green Error code Content Outdoor sub PCB Indoor Keeps flashing Stays OFF Remote control: communication error Outdoor – 4-time flash 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the connector connection between the outdoor Correct connector. main PCB and the outdoor sub PCB OK? 2.
Page 263 '18 • SCM-T-251 Green Error code Content Indoor Keeps flashing Stays OFF Remote control: Active filter voltage error – 2-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Restore normal condition. Is the power source normal? 2. Error detection method Is voltage Restore normal condition.
Page 264 '18 • SCM-T-251 Green Error code Content Indoor Keeps flashing Stays OFF Remote control: Outdoor fan motor anomaly – Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Does any foreign material intervene Remove foreign matter. in rotational area of fan propeller? Does the 2.
Page 265 '18 • SCM-T-251 Green Green Content Content Error code Error code Indoor Keeps flashing Stays OFF Power transistor anomaly Remote control: Remote controller: E51 Power transistor error Keeps flashing Stays Off Indoor Outdoor – 1-time flash 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure...
Page 266 '18 • SCM-T-251 Green Error code Content Suction pipe temperature Keeps flashing Stays OFF Indoor Remote control: sensor anomaly – 8-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure the suction pipe Correct connector. temperature sensor connector connected properly? For the characteristics of suction pipe temperature sensor, see the following graph.
Page 267 '18 • SCM-T-251 Green Error code Content Insufficient refrigerant amount Indoor Keeps flashing Stays OFF Remote control: or detection of service valve closure – 2-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the Open fully. service valve fully opened? Are the...
Page 268 '18 • SCM-T-251 Green Green Error code Error code Content Content Current safe stop Indoor Keeps flashing Stays OFF Keeps flashing Stays Off Indoor Current safe stop Remote control: Remote controller: E58 (Model SRC40 - 60) – 3-time flash Outdoor 3 time flash Outdoor ―...
Page 269 '18 • SCM-T-251 Green Error code Content Indoor Keeps flashing Stays OFF Compressor startup failure Remote control: – 2-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Disconnect the outdoor fan motor Compressor does not start at all. connector and try to startup Neither noise nor vibration cannot be heard Does...
Page 270 '18 • SCM-T-251 Green Error code Content Keeps flashing Stays OFF Indoor Compressor rotor lock error Remote control: – 7-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the Check and correct the power source voltage power source voltage.
Page 271: Table Of Functions Connected Wired Remote Control (Rc-E5)
'18 • SCM-T-251 9. TABLE OF FUNCTIONS CONNECTED WIRED REMOTE CONTROL (RC-E5) If wired remote control (option part) is connected to the following indoor units, some of the functions cannot be used. Please see following table for details. ・Wall mounted type：SRK＊＊ZSX-S, ZS-S ・Floor standing type：SRF＊＊ZMX-S, ZMA-S ・Ceiling concealed type：SRR＊＊ZM-S ○：OK, △：Conditionally OK, ×：N/A...
Page 272 '18 • SCM-T-251 Outline of function Remarks Functions Preparation of display of heating Display of preparative heating opration from indoor unit. Starting time of heating, thermo operation ○ ○ ○ opration 34 Display of defrost operation Display of defrost operation from indoor unit. ○...
Page 273: Component Replacement
'18 • SCM-T-251 10. COMPONENT REPLACEMENT Models SCM50ZS-S1, 60ZM-S1 Fan and fan motor (FMo) 1. Loosen 5 screws and remove Screws (For front panel) Screw (For top panel) the top panel. 2. And then loosen 7 screws and remove the front panel together with the fan guard.
Page 274 '18 • SCM-T-251 Fan and fan motor (FMo) Clanps 5. Detach the clamps. 6. Pull out the cable. Nuts 7. Loose 4 nuts. 8. Remove the fan motor (FMo). Compressor (CM) 1. Loosen screws and remove the front panel and top panel.
Page 275 '18 • SCM-T-251 Compressor (CM) 4. Loosen screws and remove 〔Side panel〕 Screw Screws the side panel. Screws 〔Side view〕〔Rear view〕 5. Untie the string and remove rear and front insulation cover. Disconnect the 6. Disconnect the connector of connector of crankcase heater.
Page 276 '18 • SCM-T-251 Compressor (CM) 7. Remove the top cover and the side jacket of compressor. Top cover Side jacket 8. Remove the crankcase heater. Crankcase heater (It is available to remove the 〔Front view〕 crankcase heater after removing the compressor) 9.
Page 277 '18 • SCM-T-251 Compressor (CM) 10. Loosen a nut and remove Terminal cover the terminal cover. 11. Disconnect the fasten connectors from compressor. U: Red cable V: White cable W: Black cable Note : Be sure to do above work after elapsing 3 minutes from power OFF.
Page 278 '18 • SCM-T-251 Main PCB (PCB1) on the upper layer 1. Loosen the screws and 〔Top view〕 remove the top panel and front panel. 2. Unlatch the cover and remove the cover of control box. 2 Latches on front side 3.
Page 279 '18 • SCM-T-251 Main PCB (PCB1) on the upper layer 〔Main PCB〕 5. Disconnect all connectors on the main PCB side. ①Disconnect the fasten connectors for power source to compressor. U : Red cable V : White cable W : Black cable 　　...
Page 280 '18 • SCM-T-251 Main PCB (PCB1) on the upper layer Layout of Main PCB 〈Main PCB〉〔Part side〕 CNFAN CNTH CN20S CNHEAT CNSUB R : Black S : White C-2 : Red S-2 : White W : Black Fuse V : White U : Red 〔Pattern side〕...
Page 281 '18 • SCM-T-251 Sub PCB (PCB2) on the lower layer CNEEV3 ② CNC ⑤ CNB ⑤ CNA ⑤ CN20V ④ 1.After removing the Main PCB, disconnect all connectors on Sub PCB. ①Disconnect the connector of CNEEV1. 　　（for EEVA & EEVB) ②Disconnect the connector of CNEEV3.
Page 282 '18 • SCM-T-251 Sub PCB (PCB2) on the lower layer 5. Loosen 4 screws and remove Sub PCB. Screws Screws 〔Part side〕 Layout of Sub PCB CN20V Black cable S-1 (WH) C-1 (RD) CNEEV3 CNEEV1 CNMAIN SO (WH) RO (BK) Grounding cables White cable to N-terminal...
Page 283 '18 • SCM-T-251 EEV coils 1. Remove the faulty EEV coil and disconnect the connector. Note: 1) When disconnecting the connector, be sure to check the color marked on the top of coil and the color of the connector. WHITE BLUE 2) When replace to a new (EEVB)
Page 284 '18 • SCM-T-251 4-way valve coil 1. Disconnect the connector. 2. Loosen a screw and remove Connector (Red) the coil. Coil Screw...
Page 285: Checking Procedure
'18 • SCM-T-251 11. CHECKING PROCEDURE Models SCM50ZS-S1, 60ZM-S1 ＜Fan motor＞ CNFAN1 on PCB1 ④ ③ ② ① Output DC280V ① DC15V ② DC0-6V ③ DC0-5V ④ ＜Compressor＞ V:White U:Red W:Black Resistance 1.154Ω...
Page 286 '18 • SCM-T-251 ＜EEV A - EEV C＞ MARKING EEV C BLUE EEV B EEV A WHITE Input : DC12V 46Ω 46Ω 46Ω 46Ω...
Page 287 '18 • SCM-T-251 ＜Sensor＞ Discharge pipe Suction pipe Heat exchanger temp. sensor temp. sensor sensor (Tho-R) (Tho-D) (Tho-S) Resistance(kΩ) Name Color 25℃ 90℃ Tho-R Black Tho-A Black Tho-D Black Outdoor air Tho-S Black temp. sensor (Tho-A)
Page 288 '18 • SCM-T-251 ＜Main PCB:PCB1＞ CNFAN CNTH CN20S CNHEAT CNSUB R : Black S : White C-2 : Red S-2 : White W : Black Fuse V : White U : Red Connector Connected to Normal value Remark CNFAN Fan motor CNSUB(5-7) DC13V CNMAIN of SUB PCB...
Page 289 '18 • SCM-T-251 ＜SUB PCB:PCB2＞ CNEEV3 S-1 (WH) C-1 (RD) CN20V Black cable CNEEV1 CNMAIN SO (WH) RO (BK) Grounding cables White cable to N-terminal Connector Connected to Normal value Remark TB1(L) AC220-240V Power source TB1(N) AC0V Power source R-1 of Main PCB AC220-240V S-1 of Main PCB AC0V...
Page 290: Option Parts
'18 • SCM-T-251 12. OPTION PARTS PJZ012A131 12.1 Wired remote control (1) Model RC-EX3 　 1. Safety precautions ● Please read this manual carefully before starting installation work to install the unit properly. Every one of the followings is important information to be observed strictly. Failure to follow these instructions properly may result in serious WARNING consequences such as death, severe injury, etc.
Page 291 '18 • SCM-T-251 　 WARNING Do not install the unit in appropriate environment or where inﬂammable gas could generate, ﬂow in, accumulate or leak. If the unit is used at places where air contains dense oil mist, steam, organic solvent vapor, corrosive gas (ammonium, sulfuric compound, acid, etc) or where acidic or alkaline solution, special spray, etc.
Page 292 '18 • SCM-T-251 　 CAUTION Do not install the remote control at following places. (1) It could cause break-down or deformation of remote control. ・Where it is exposed to direct sunlight ・Where the ambient temperature becomes 0 ° C or below, or 40 ° C or above ・Where the surface is not flat ・Where the strength of installation area is insufficient (2) Moisture may be attached to internal parts of the remote control, resulting in a display...
Page 293 '18 • SCM-T-251 　 2 . Accessories & Prepare on site Following parts are provided. Accessories R/C main unit, wood screw (ø3.5 x 16) 2 pcs, Quick reference Following parts are arranged at site. Prepare them according to the respective installation procedures. When the cable length is longer than 100 m, Item name Q’ty...
Page 294 '18 • SCM-T-251 　 4 . Installation procedure Perform installation and wiring work for the remote control according to the PCB side (Viewed from rear) following procedure. Dimensions (Viewed from front) 固定穴 Fixing holes センサー端子 Sensor USB port Terminal block To remove the upper case from the bottom cases of R/C ·...
Page 295 ブッシングパテでシールすること '18 • SCM-T-251 　リモコン配線 ③ Connect wires from X and Y terminals of R/C to X and Y terminals of indoor unit. R/C wires (X, Y) have no polarity. Fix wires such that the wires will run around the terminal screws on the top case of R/C.
Page 296 '18 • SCM-T-251 　 5 . Main/Sub setting when more than one remote control are used ○: operable ×: not operable Up to two units of R/C can be used R/C operations Main Sub R/C operations Main Sub Service Installation Installation date ○...
Page 297 '18 • SCM-T-251 (2) Model RC-E5 Installation manual for wired remote controller PJA012D730 Connect the remote control terminal block. Connect the terminal of rem Read together with indoor unit's installation manual. with the terminal of indoor u WARNING (X and Y are no polarity) Wiring route is as shown in Fasten the wiring to the terminal securely and hold the cable securely so as not to apply unexpected stress on the depending on the pulling ou...
Page 298 '18 • SCM-T-251 emote controller Connect the remote control cord to the Sheath Sheath The range of temperature setting Upper Upper terminal block. When shipped, the range of set tempe Connect the terminal of remote control (X,Y) Upper case Upper case Board Board Heating : 16 - 30°C (55 - 86°F)
Page 299 '18 • SCM-T-251 PJA 012 D7 30 Sheath Sheath The range of temperature setting Upper When shipped, the range of set temperature differs depending on the operation mode as below. pper case Upper case Board Heating : 16 - 30°C (55 - 86°F) Except heating (cooling, fan, dry, automatic) : 18 - 30°C (62 - 86°F) Upper limit and lower limit of set temperature can be changed with remote control.
Page 300 '18 • SCM-T-251 The functional setting The initial function setting for typical using is performed automatically by the indoor unit connected, when remote control and indoor unit are connected. As long as they are used in a typical manner, there wiil be no need to change the initial settings. If you would like to change the initial setting marked “...
Page 301 '18 • SCM-T-251 Note 1: The initial setting marked “ ” is decided by connected indoor and outdoor unit, and is automatically defined as following table. Function No. Item Default Model "Auto-RUN" mode selectable indoor unit. Remote control function02 Indoor unit without "Auto-RUN" mode Indoor unit with two or three step of air flow setting Remote control function06...
Page 302 '18 • SCM-T-251 P JA012D 730 nd is automatically defined as following table. Operation message How to set function ectable indoor unit. Function description: Function No. Stop air-conditioner and press (SET) (MODE) setting description: uto-RUN" mode buttons at the same time for over three seconds, and the three step of air flow setting "FUNCTION SET "...
Page 303: Wireless Kit
'18 • SCM-T-251 12.2 Wireless kit PJA012D791 PJA012D791 WIRELESS REMOTE RCN-TC-24W-E2 (1) FDTC series (RCN-TC-24W-E2) 201612 CONTROLLER&RECEIVER Note : Following functions of FDTC Type-F indoor unit series are not able to be set with this wireless remote control (RCN-TC-24W-E2). INSTALLATION MANUAL 1.
Page 304 '18 • SCM-T-251 WARNING 01612 ● Do not wash the unit with water. It could cause electric shocks, fire, or break-down. ● Use the speci fied cables for wiring, and connect them securely with care to protect electronic parts from external forces. Improper connections or fixing could cause heat generation, fire, etc.
Page 305 It could cause electric shocks. '18 • SCM-T-251 ② ③ Preparation before installation (continued) To change setting Master/Slave Insta setting when ① Att 1. Remove the cover by unscrewing two screws from the back of using plural receiver. ② Pu remote controls 2.
Page 306 '18 • SCM-T-251 ③ How to install the receiver(continued) Installation of the receiver ① Attach the receiver to the panel according to the panel installation manual. ② Put the wiring in the control box with other wiring as shown below. ③...
Page 307 '18 • SCM-T-251 ④ ④ Wireless remote control 2. Se Installation tips for the remote control holder Fix the remote control holder using the screws supplied with this product. * Precautions for installing the holder Holder for Wood screw FAN S remote control ●...
Page 308 '18 • SCM-T-251 ④ Wireless remote control (continued) 2. Setting details The following functions can be set. Fun speed setting : Standard FAN SPEED Fun speed setting : Setting 1 * Fun speed setting : Setting 2 * Room heating temperature adjustment : Disable Room heating temperature adjustment : +1°C MODE Room heating temperature adjustment : +2°C...
Page 309 '18 • SCM-T-251 ⑤ ⑤ Receiver 2. Cor 1 Control plural indoor units with one remote control Restrictions on the thickness and length of wire in a (Maximun total extension 600m.) Up to 16 indoor units can be connected. Standard Within 0.3 mm²...
Page 310 '18 • SCM-T-251 ⑤ Receiver (continued) 2. Correlation between illuminance at the receiver and reachable area of the signal The receivable area of the signal when the illuminance in a plain view. at the receiver is 300lux The drawing in the right shows the correlation between the reachable area of the signal and illuminance at the receiver when the wireless remote...
Page 311: Fde Series (Rcn-E-E2)
△ PFA012D630 '18 • SCM-T-251 △ 　　　(2) FDE series (RCN-E-E2) PFA012D630 Safety precautions ●Please read this manual carefully before starting installation work to install the unit properly. Every one of the followings is important information to be observed strictly. Safety precautions WARNING Failure to follow these instructions properly may result in serious consequences such as death, severe injury, etc.
Page 312 '18 • SCM-T-251 △ WARNING ● Do not wash the unit with water. It could cause electric shocks, fire, or break-down. ● Use the speci fied cables for wiring, and connect them securely with care to protect electronic parts from external forces. Improper connections or fixing could cause heat generation, fire, etc.
Page 313 ① Accessories It could cause electric shocks. Please make sure that you have all of the following accessories. Wireless remote control Receiver '18 • SCM-T-251 Remote control holder cuit. Parts set Screw for holder ② AAA dry cell battery (LR03) ③...
Page 314 '18 • SCM-T-251 ④ ④ Wireless remote control 2. Se Installation tips for the remote control holder Fix the remote control holder using the screws supplied with this product. * Precautions for installing the holder Holder for Wood screw remote control FAN S ●...
Page 315 '18 • SCM-T-251 ④ Wireless remote control (continued) 2. Setting details The following functions can be set. Fun speed setting : Standard FAN SPEED Fun speed setting : Setting 1 * Fun speed setting : Setting 2 * Room heating temperature adjustment : Disable Room heating temperature adjustment : +1°C MODE Room heating temperature adjustment : +2°C...
Page 316 '18 • SCM-T-251 ⑤ ⑤ Receiver Wire 1 Control plural indoor units with one remote control Restrictions on the thickness and length of wire (Maximun total extension 600m.) Up to 16 indoor units can be connected. 1. St Standard Within 0.3 mm² × 100m 1.
Page 317 '18 • SCM-T-251 ⑤ Receiver (continued) Wireless remote control's operable area 1. Standard signal receiving range 2. Points for attention in connecting a plural [Condition] number of indoor units Illuminance at the receiver area: 360 lux. [Condition] (When no lighting fixture is located within 1m Illuminance at the receiver area: 360 lux.
Page 318: Fdum Series (Rcn-Kit4-E2)
△ PJZ012D112 '18 • SCM-T-251 　　　(3) FDUM series (RCN-KIT4-E2) △ PJZ012D112 Safety precautions ●Please read this manual carefully before starting installation work to install the unit properly. Every one of the followings is important information to be observed strictly. Safety precautions WARNING Failure to follow these instructions properly may result in serious consequences ●Please read this manual carefully before starting installation work to install the unit properly.
Page 319 '18 • SCM-T-251 △ WARNING ● Do not wash the unit with water. It could cause electric shocks, ﬁre, or break-down. ● Use the speciﬁed cables for wiring, and connect them securely with care to protect electronic parts from external forces. Improper connections or ﬁxing could cause heat generation, ﬁre, etc.
Page 320 ● Do not operate the unit with wet hands. mark. It could cause electric shocks. '18 • SCM-T-251 ② ③ Preparation before installation (continued) To change setting Master/Slave setting when using ⑤ Tak plural remote controls ⑥ Fit 1. Remove one screws located on the under of the receiver and detach the board.
Page 321 Auto restart ON : Valid OFF : Invalid mark. SW1-4 '18 • SCM-T-251 ③ How to install the receiver(continued) ⑤ Take out the connector to the backside from the hole of the lower case putting through the wiring at ①. ⑥...
Page 322 '18 • SCM-T-251 ③ ④ How to install the receiver (continued) Chan (C) Exposed installation How t Use the following procedure when installing the case with the wiring exposed. The A Cord clamp pump When Wiring remot Band (enclosed) Fix with band To dis button Hole...
Page 323 '18 • SCM-T-251 ④ Wireless remote control (continued) Changing the wireless remote control setting How to change the Auto Run setting The Auto Run mode is not available on the building air-conditioner and gas heat pump series (excluding the cooling/heating free multi system). When using the wireless remote control to operate those models, set the wireless remote control to disable the Auto Run mode.
Page 324 '18 • SCM-T-251 ⑤ ⑤ Receiver (continued) For the shop series For VRF series, set the indoor unit address with SW1, SW2 and SW5-2 on the indoor unit PCB from [000] to [127] so as not to duplicate. Terminal block Indoor unit (1) Indoor unit (2) Indoor unit (16)
Page 325 [0] to [F] so as not to duplicate. Within 2.0 mm² × 600m '18 • SCM-T-251 ⑤ Receiver (continued) The receivable area of the signal when the illuminance at the receiver is 300lux. The receivable area of the signal when the illuminance at the receiver is 600lux.
Page 326: Simple Wired Remote Control (Rch-E3)
'18 • SCM-T-251 12.3 Simple wired remote control (RCH-E3) Notes: Following functions of FDU indoor unit series are not able to be set with this simple wired remote control (RCH-E3). 　1. 4-fan speed setting (P-Hi/Hi/Me/Lo) 3-fan speed setting (Hi/Me/Lo) Names and functions of sections Remote control sensor ON/OFF button Operation/Inspection lamp...
Page 327 '18 • SCM-T-251 MITSUBISHI HEAVY INDUSTRIES,LTD. AIR-CONDITIONING & REFRIGERATION SYSTEMS HEADQUARTERS Remote control installation dimensions In case of embedding wiring Wall surface Wiring Wiring outlet Electrical box (In case of embedding wiring) （Prepare on site） 12×7 slot hole Installation hole 9×4.5 slot hole （2 places）...
Page 328 '18 • SCM-T-251 3. Master/ In case of exposing cord Simple Remote Control Installation Manual PJZ012D069 ⑴　 Make certain to remove a screw on the bottom surface of the ⑴　 Up to two remote control. Read together with indoor unit's installation manual. WARNING ⑴...
Page 329 '18 • SCM-T-251 3. Master/ slave setting when more than one remote control are used ⑴　 Up to two remote controls can be connected to one unit (or one group) of indoor unit. Switch Setting Function detail Slave remote control indoor unit SW1-1 Master remote control...
Page 330 necessary at the wire connecting section. Be careful about contact failure. 　　Connect the terminals (X and Y) of the remote control and the terminals (X and Y) of the indoor unit. (No polarity of X and Y) 100 - 200m･････････････････0.5mm ×...
Page 331 “88” blinks on the temperature setting indicator. (blinking for approximately 2 to 10 seconds while × 2 cores data is read) Then, the return air temperature is displayed. When AIR CON No. is pressed, return × 2 cores to the indoor unit selection display (example, “U 000”). ×...
Page 332: Interface Kit (Sc-Bikn2-E)
'18 • SCM-T-251 12.4 Interface kit (SC-BIKN2-E) RKZ012A099 Accessories included in package Safety precautions Before use, please read these Safety precautions thoroughly before installation. Be sure to check all the accessories included in package. ●All the cautionary items mentioned below are important safety related items to be taken into consideration, so be sure to observe them at all times.
Page 333 '18 • SCM-T-251 Installation of the interface ・Install the interface within the range of the connection cable length (approximately 1.3m) from the indoor unit. Wiring inlet ・Be sure not to extend the connection cable on site. If the connection cable is extended, malfunction may occur. ・Fix the interface on the wall, pillar or the like.
Page 334 '18 • SCM-T-251 Functions of CnT connector It is available to operate the air-conditioner and to monitor the operation status with the external control unit (remote display) by sending the input/output signal through CnT connector on the indoor control PCB. Note (1) 0.3mm 0.75mm ×2m...
Page 335 '18 • SCM-T-251 Connection of wired remote control Regarding the connection of wired remote control, refer to the installation manual of wired remote control. ①Switch ON the DIP switch SW2-2 (Factory setting : ON) on the interface PCB. DIP suitch Caution:Wireless remote control attached to the indoor unit can be used in parallel, after connecting the wired remote control.
Page 336: Superlink E Board (Sc-Adna-E)
'18 • SCM-T-251 12.5 Superlink E board (SC-ADNA-E)
Page 337 '18 • SCM-T-251...
Page 338: Ceiling Concealed Type (Srr) Option Parts
'18 • SCM-T-251 12.6 Ceiling concealed type (SRR) option pats 12.6 Ceiling concealed type (SRR) option pats RJZ012A040 (1) Bottom air inlet kit This manual contains installation points for BOTTOM AIR INLET KIT manufactured by MHI. Carry out the work following the instructions below. Keep this manual properly with USER'S MANUAL provided with the indoor unit.
Page 339 '18 • SCM-T-251 (2) Remote sensor kit (SC-THB-E3) Sensor for return air temperature detection is located in the air inlet of the indoor unit. Use the remote sensor kit SC-THB-E3, and install it on the suitable wall so the temperature of the room can be accurately detected.
Page 340 '18 • SCM-T-251 (f) Cut wiring from 1 & 2 pins of CnG connector. (wiring length : about 100 mm from the connector) If the pre-installed return air temperature sensor ASSY is not removed, the end of the sensor wiring should prevent a short circuit by insulating tape etc.
Page 341: Oa Spacer (Fdtc Only)
'18 • SCM-T-251 INSTALLATION INSTRUCTION OF OA SPACER FOR FDTC INDOOR UNIT 12.7 OA spacer (FDTC only) PJZ012D074 This manual describes the installation methods for OA spacer (TC-OAS-E) and the duct joint (TC-OAD-E). ◎This OA spacer is designed for assembling on the indoor unit (FDTC Series), not for be using independently. FDTCA151R, 201R, FDTCA22-56KXE4R, FDTC22-56KXE6 Application model FDTC22-56KXE6A, FDTC22-56KXE6B, FDTC22-56KXE6D...
Page 342 '18 • SCM-T-251 ② Prior study before installation (Usage limitation) (1) Temperature conditions for OA spacer ・ Adjust the temperature conditions of mixed air with outdoor air and indoor air within the usage range of suction air temperature for the air-conditioner. ・...
Page 343 '18 • SCM-T-251 ④ Installation of OA spacer on the indoor unit OA spacer can be installed regardless whether the indoor unit has already been hanged or not. (It is recommended to install before hanging the unit for convenience of installation.) 1-1.
Page 344 '18 • SCM-T-251 ⑤ Installation of indoor unit Work procedure 1. This units is designed for 2 x 2 grid ceiling. If necessary, please detach the T bar temporarily before you install it. If it is installed on a ceiling other than 2 x 2 grid ceiling, provide an inspection port on the control box side. 2.
Page 345: Duct Joint (Fdtc Only)
'18 • SCM-T-251 DUCT JOINT FOR FDTC 12.8 Duct joint (FDTC only) PJZ012D073 PJZ012D073 ● This product is used by assembling on the spacer (TC-OAS-E) 1.Before installation Conﬁrm the following parts are included: ● Insulation 1 Insulation 2 Duct joint Screw (120 ×...
Page 346: Filter Kit (Fdum Only)
PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 PJZ012D076 Installation Points and Operating Installation Points and Operating Installation Points and Operating Installation Points and Operating Installation Points and Operating Installation Points and Operating Installation Points and Operating Installation Points and Operating Installation Points and Operating...
Page 347 '18 • SCM-T-251 3. Installation P oints 3. Installation points (1) Stick the insulation on both inner sides of the duct, leaving no space up and down. (Unit inside) BOTTOM Insulation Sticking standard position for insulation Duct (Unit outside) Duct Insu lation Insulation...
Page 348: Technical Information
Rated air flow(outdoor) 2460 m3/h Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd. 5 The Square, Stockley Park, Uxbridge, Middlesex,UB11 1ET, United kingdom RWC000Z314...
Page 349 Rated air flow(outdoor) 2460 m3/h Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd. 5 The Square, Stockley Park, Uxbridge, Middlesex,UB11 1ET, United kingdom...
Page 350 Rated air flow(outdoor) 2460 m3/h Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd. 5 The Square, Stockley Park, Uxbridge, Middlesex,UB11 1ET, United kingdom...
Page 351 Rated air flow(outdoor) 2460 m3/h Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd. 5 The Square, Stockley Park, Uxbridge, Middlesex,UB11 1ET, United kingdom...
Page 352 Rated air flow(outdoor) 2460 m3/h Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd. 5 The Square, Stockley Park, Uxbridge, Middlesex,UB11 1ET, United kingdom...
Page 353 Rated air flow(outdoor) 2460 m3/h Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd. 5 The Square, Stockley Park, Uxbridge, Middlesex,UB11 1ET, United kingdom...
Page 354: Model Scm60Zm-S1
Rated air flow(outdoor) 2520 m3/h Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd. 5 The Square, Stockley Park, Uxbridge, Middlesex,UB11 1ET, United kingdom RWC000Z314...
Page 355 Rated air flow(outdoor) 2520 m3/h Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd. 5 The Square, Stockley Park, Uxbridge, Middlesex,UB11 1ET, United kingdom...
Page 356 Rated air flow(outdoor) 2520 m3/h Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd. 5 The Square, Stockley Park, Uxbridge, Middlesex,UB11 1ET, United kingdom RWC000Z314...
Page 357 Rated air flow(outdoor) 2520 m3/h Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd. 5 The Square, Stockley Park, Uxbridge, Middlesex,UB11 1ET, United kingdom...
Page 358 MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD. 16-5 Konan 2-chome, Minato-ku, Tokyo, 108-8215, Japan http://www.mhi-mth.co.jp/en/ Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice. Copyright MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.

Mitsubishi Heavy Industries SCM50ZS-S1 Technical Manual

Quick Links

Troubleshooting

Related Manuals for Mitsubishi Heavy Industries SCM50ZS-S1

Summary of Contents for Mitsubishi Heavy Industries SCM50ZS-S1

This manual is also suitable for:

Table of Contents