RESIDENTIAL AIR-CONDITIONING
TECHNICAL MANUAL & PARTS LIST
WALL MOUNTED TYPERESIDENTIAL AIR-CONDITIONER(Split system, air cooled cooling only type)
SRK18CLSRK18CL-3SRK18CL-6
Manual No.'12•SRK-T-125
Page 1: ...RESIDENTIAL AIR CONDITIONING TECHNICAL MANUAL PARTS LIST WALL MOUNTED TYPE RESIDENTIAL AIR CONDITIONER Split system air cooled cooling only type SRK18CL SRK18CL 3 SRK18CL 6 Manual No 12 SRK T 125...
Page 2: ...TECHNICAL MANUAL...
Page 3: ...n control function by remote controller 5 Flap control 23 4 Custom cord switching procedure 22 3 Auto restart function 2 Unit ON OFF button 22 21 8 Outline of automatic operation 24 7 Outline of cooli...
Page 4: ...31 7 Phenomenon observed after shortcircuit wire breakage on sensor 29 8 Checking the indoor electrical equipment 30 How to read the model name Example SRK 18 C Series code For Indonesia Cooling only...
Page 5: ...control Operation switch Wireless Remote control Room temperature control Microcomputer thermostat Operation Display RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety devices Compressor overh...
Page 6: ...Operation switch Wireless Remote control Room temperature control Microcomputer thermostat Operation Display RUN Green TIMER Yellow HI POWER Green ECONO Orange Safety devices Compressor overheat prot...
Page 7: ...48 48 5 7 295 4 7 9 15 Service space 70 Unit 54 46 5 Service space Service space Service space Installation plate 491 1 520 8 559 1 58 61 5 2 EXTERIOR DIMENSIONS 1 Indoor units Model SRK18CL 3 6 Hole...
Page 8: ...510 136 9 476 Elogated hole 2 12x16 314 12 328 Terminal block Service valve Liquid 6 35 1 4 Service valve Gas 15 88 5 8 Ground terminal 124 34 6 20 2 0 42 7 100 3 15 640 14 2 Outdoor unit Model SRC18C...
Page 9: ...VARISTOR FAN MOTOR CNU U M 1 3 4 5 6 TO OUTSIDE T TERMINAL 1 2 N 3 UNIT BLOCK HEAT EXCHANGER BOARD CIRCUIT PRINTED FLAP CNX2 M 5 MOTOR BLUE WHITE RED WHITE BLACK BLUE YELLOW BLACK CNG CNE DISPLAY WIR...
Page 10: ...RD RED COLOR ORANGE BLACK BLUE BK OR BL WH WHITE INDOOR UNIT POWER SOURCE 220 240V 50Hz Y GN YELLOW GREEN CFO CC 2 N 3 T 1 L RCR011G003BC RUNNING CAPACITOR FOR COMPRESSOR RUNNING CAPACITOR FOR FAN MOT...
Page 11: ...it Indoor unit Room temp sensor Heat exchanger Flare connecting Heat exchanger sensor Piping Liquid 6 35 Piping Gas 15 88 Check joint Service valve Liquid Flare connecting Heat exchanger Compressor Ca...
Page 12: ...way length Max 15m Max 10m Outdoor unit is higher Max 10m Outdoor unit is lower Min 3 minutes Max 10 times h Min 85 of rating Vertical height difference between outdoor unit and indoor unit Power sou...
Page 13: ...11 12 SRK T 125 2 Correction of cooling capacity in relation to one way length of refrigerant piping How to obtain the cooling capacity Piping length m Cooling 7 1 0 10 0 99 15 0 975 SRK18CL 5000 4875...
Page 14: ...ucked into re frigerant circuit which can cause bust or personal injury due to anomalously high pressure in the refrigerant Do not put the drainage pipe directly into drainage channels where poi sonou...
Page 15: ...et of outdoor unit It can cause remarkable decrease in performance corrosion and damage of components malfunction and fire Do not install the indoor unit in the locations listed below Be sure to insta...
Page 16: ...easy to con duct The place where receiving part is not exposed to the di rect rays of the sun or the strong rays of the street light ing A place where it can be easily drained A place separated at le...
Page 17: ...ces larger than indicated in the above table must be provided Look for the inside wall structures Intersediats support or pillar and finally install the unit after level surface has been checked 450 L...
Page 18: ...cord from the anchorage The earth line of power cord must be properly earthed Affix the connection wire using the wiring clamp Fix the connecting wire by wiring clamp Attach the lid Close the air inle...
Page 19: ...e air inlet panel Indoor unit Latch 2 locations Installation plate Installation plate Wall Indoor unit base lower latch Installation Steps Pass the pipe through the hole in the wall and hook the upper...
Page 20: ...1 Indoor unit side 2 Outdoor unit side 1 Indoor unit side 2 Outdoor unit side Connect firmly gas and liquid side pipings by Torque wrench Connect firmly gas and liquid side pipings by Torque wrench D...
Page 21: ...ning system may cause the refrigerant cycle to break down Additional refrigerant Less than 7m Not required More than 7m 25g m How to relocate or dispose the unit In order to protect the environment be...
Page 22: ...ay wall etc CAUTION Do not use new and old batteries together Installations test check points Check the following points again after completion of the installation and before turning on the power Cond...
Page 23: ...his button cancels the ON timer OFF timer and SLEEP operation CANCEL button RESET switch Switch for resetting microcomputer and setting time OFF TIMER button This button selects OFF TIMER operation TE...
Page 24: ...stops if you press the button again Auto restart function What is auto restart function Auto restart function records the operational status of the air conditioner immediately prior to be switched off...
Page 25: ...not operating COOL DRY FAN Remote controller display Approx 5 Approx 15 Approx 30 Swing Flap stopped Approx 45 Approx 60 Angle of Flap from Horizontal In COOL DRY FAN operation Approx 5 Approx 60 b S...
Page 26: ...ration and if the result of check is not same as the previ ous operation mode changes the operation mode c When the unit is started again within one hour after the stop of automatic operation or when...
Page 27: ...begins operating the thermal operation is not effective for 3 minutes so operation continues as is in the operation mode After 3 minutes has passed the thermal operation is effective However stopping...
Page 28: ...alve open 3 Troubleshooting procedure If the air conditioner does not run at all If the air conditioner does not run at all diagnose the trouble using the following troubleshooting procedure If the ai...
Page 29: ...at exchanger sensor 1 wire poor connector connection Indoor PCB is faulty Broken room temperature sensor wire poor connector connection Indoor PCB is faulty Heat exchanger sensor 1 error Room temperat...
Page 30: ...CB Replace indoor fan motor Notes 1 See pages 30 for the DC fan motor and indoor PCB check procedure 2 After making sure the DC fan motor and indoor PCB are normal connect the connectors and confirm t...
Page 31: ...refregerant amount Broken compressor wire Service valve close 7 Phenomenon observed after shortcircuit wire breakage on sensor a Indoor unit Sensor Operation mode Phenomenon Shortcircuit Disconnected...
Page 32: ...al blocks and Inspect power source for outdoor unit Replace fuse Replace indoor PCB Is the fuse burnt out 3 15 A YES YES YES NO NO NO b Indoor unit fan motor check procedure 1 Indoor PCB output check...
Page 33: ...31 12 SRK T 125 09 SRK DB 087D 9 How to make sure of wireless remote controller The figare below shows the SRK series...
Page 34: ...32 12 SRK T 125...
Page 35: ...33 12 SRK T 125 PARTS LIST INDOOR UNIT SRK18CL SRK18CL 3 SRK18CL 6 SRC18CL SRC18CL 3 SRC18CL 6 OUTDOOR UNIT...
Page 36: ...34 12 SRK T 125 CRAE0255 25 5 5 25 1 3 9 6 28 23 31 7 26 32 2 2 30 29 22 24 8 12 20 21 27 11 4 12 13 10 13 15 16 17 14 18 19 11 11 11 PANEL FAN ASSY...
Page 37: ...R 1 1 1 1 2 2 12 RMA129A002 PLATE CONNECTING 2 1 1 1 2 4 R A L L O C 0 0 2 C 5 3 9 W K R 3 1 14 18 RMA144A002 LINK ASSY R 1 1 1 1 2 14 RKY129A005 BRACKET MOTOR R 1 1 1 1 2 1 K N I L 1 0 0 A 4 4 1 Y K...
Page 38: ...36 12 SRK T 125 CRAE0256 3 1 2 4 9 8 13 12 11 19 7 10 18 17 5 6 20 21 22 14 15 16 HEAT EXCH CONTROL...
Page 39: ...CK TERMINAL 1 1 1 2 2 13 RMA504A003 HARNESS ASSY 1 14 RKY505A001JH PWB ASSY 1 2 2 4 8 15 SSA555B058AD VARISTOR 1 1 1 1 2 Z 16 SSA564A132 FUSE CURRENT 1 1 1 1 2 17 RKY503A001C DISPLAY ASSY 1 1 1 2 4 18...
Page 40: ...38 12 SRK T 125 CRBE0313 14 15 1 2 3 5 6 7 8 9 11 14 12 13 4 10 PANEL FAN ASSY...
Page 41: ...WC124A004F PANEL ASSY TOP 1 1 1 1 2 5 RWC132A007 PANEL ASSY SERVICE 1 1 1 1 2 6 RWC435A002 GRILLE ASSY AIR OUTLET 1 1 1 2 3 1 E L D N A H B 6 3 0 B 4 4 9 A S S 7 8 RWC116A041B BRACKET MOTOR 1 1 C A R...
Page 42: ...40 12 SRK T 125 CRBE0343 19 16 11 12 10 20 13 15 1 3 2 14 18 9 17 7 4 8 5 LIQ 6 GAS HEAT EXCH CONTROL...
Page 43: ...04A024 PIPING ASSY EXPAN 1 1 1 1 2 1 Y R A L L I P A C 9 1 0 B 5 1 3 C M R 8 1 Y R A L L I P A C 6 1 0 B 5 1 3 C M R 9 e d i S 1 P M O C N O I T A L U S N I 0 1 0 D 4 5 1 C M R 0 1 11 RMC201A013 COMPR...
Page 44: ...AIR CONDITIONING TECHNICAL MANUAL PARTS LIST Copyright MITSUBISHI HEAVY INDUSTRIES LTD Because of our policy of continuous improvement we reserve the right to make changes in all specifications witho...
