Related Manuals for Mitsubishi SRK18CL
Summary of Contents for Mitsubishi SRK18CL
- Page 1 Manual No.'12•SRK-T-125 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...
- Page 2 TECHNICAL MANUAL...
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Page 3: Table Of Contents
'12 • SRK-T-125 CONTENTS 1. SPECIFICATIONS ..................2. EXTERIOR DIMENSIONS ................(1) Indoor units ..................(2) Outdoor units ..................(3) Wireless remote controller ..............3. ELECTRICAL WIRING ................. (1) Indoor units ..................(2) Outdoor units ..................4. PIPING SYSTEM ..................5. - Page 4 '10 • SRK-T-099 '12 • SRK-T-125 (7) Phenomenon observed after shortcircuit, wire breakage on sensor ..29 ........... 30 (8) Checking the indoor electrical equipment (9) How to make sure of wireless remote controller ........31 ■How to read the model name Example: SRK 18 C L -3 For Indonesia...
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Page 5: Specifications
'12 • SRK-T-125 1. SPECIFICATIONS SRK18CL (-3) Model Item Indoor unit SRK18CL (-3) Outdoor unit SRC18CL (-3) Cooling capacity (1) 5000 Power supply 1 Phase, 220/230/240V, 50Hz Power Cooling 1.70 consumption Running Cooling 8.0/7.7/7.3 (220/230/240V) current Operation data (1) Inrush current Cooling 2.94... - Page 6 '12 • SRK-T-125 SRK18CL-6 Model Item Indoor unit SRK18CL-6 Outdoor unit SRC18CL-6 Cooling capacity (1) 5000 Power supply 1 Phase, 220/230/240V, 50Hz Power Cooling 1.72 consumption Running Cooling 8.1/7.8/7.4 (220/230/240V) current Operation data (1) Inrush current Cooling 2.91 Sound level...
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Page 7: Exterior Dimensions
'12 • SRK-T-125 2. EXTERIOR DIMENSIONS (1) Indoor units Model SRK18CL(-3) (-6) -
Page 8: Outdoor Units
'12 • SRK-T-125 (2) Outdoor unit Model SRC18CL(-3) (-6) 286.4 Drain holes Unit: mm 203.1 136.9 Elogated hole (2-12 x16) Terminal block 34.6 Ground terminal Service valve (Liquid) ø6.35 (1/4'') Service valve (Gas) ø15.88 (5/8'') (3) Wireless remote controller Unit: mm 17.3... -
Page 9: Electrical Wiring
'12 • SRK-T-125 3. ELECTRICAL WIRING (1) Indoor units Model SRK18CL(-3) (-6) DISPLAY WIRELESS RECEIVER BACK-UP SW PRINTED CIRCUIT BOARD FLAP ROOM TEMP. MOTOR SENSOR CNX2 HEAT EXCHANGER SENSOR 1 VARISTOR WHITE BLACK FUSE 52C-3 BLUE WHITE 250V YELLOW 3.15A... -
Page 10: Outdoor Units
'12 • SRK-T-125 (2) Outdoor units Model SRC18CL(-3) (-6) MEANING OF MARK SYMBOL PARTS NAME COMPRESSOR MOTOR FAN MOTOR RUNNING CAPACITOR FOR COMPRESSOR RUNNING CAPACITOR FOR FAN MOTOR CONNECTOR TERMINAL BLOCK MARK COLOR BLACK BLUE ORANGE WHITE YELLOW／ Y／GN GREEN Y／GN INDOOR UNIT POWER SOURCE... -
Page 11: Piping System
'12 • SRK-T-125 4. PIPING SYSTEM Model SRK18CL(-3) (-6) Indoor unit Outdoor unit Flare connecting Service valve (Gas) Piping (Gas) Check joint ø 15.88 Room temp. Heat sensor Heat exchanger exchanger sensor Heat Accumulator Compressor exchanger Piping (Liquid) Service valve (Liquid) ø6.35... -
Page 12: Range Of Usage & Limitations
'12 • SRK-T-125 5. RANGE OF USAGE & LIMITATIONS Models All models Item Indoor return air temperature ( Upper, lower limits ) Refer to the selection chart Outdoor air temperature ( Upper, lower limits ) Refrigerant line ( one way ) length Max. - Page 13 '12 • SRK-T-125 (2) Correction of cooling capacity in relation to one way length of refrigerant piping Piping length [m] Cooling 0.99 0.975 How to obtain the cooling capacity 5000 4875 SRK18CL...
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Page 14: Application Data
'12 • SRK-T-125 6. APPLICATION DATA Safety precautions • When installing the unit, be sure to check and satisfy the requirements in the selection of installation location, power supply specifica- tions, usage limitation (piping length, height differences between indoor and outdoor units, power supply voltage and etc.) and installa- tion spaces. - Page 15 '12 • SRK-T-125 CAUTION • Use the circuit breaker with sufficient breaking capacity. • Take care when carrying the unit by hand. If the breaker does not have sufficient breaking capacity, it can cause the unit If the unit weights more than 20kg, it must be carried by two or more per- malfunction and fire.
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Page 16: Before Installation
'12 • SRK-T-125 BEFORE INSTALLATION Before installation check that the power supply matches the air conditioner. Necessary tools for the installation work Standard accessories (Installation kit) Q'ty Accessories for indoor unit Plus headed driver (Phillips screwdriver) Installation plate Knife ① (Attached to the rear of the indoor unit) ②... -
Page 17: Outdoor Unit
'12 • SRK-T-125 OUTDOOR UNIT Air intake 10 cm MIN A place where good air circulation can be obtained and where rain, 10 cm No obstacles snow or sunshine will not directly strike the unit. (Service space A place where discharged hot air or unit’s operating sound will not for electrical parts) be a nuisance to the neighborhood. - Page 18 '12 • SRK-T-125 Preparation of indoor unit The screw of the service panel is tightened securely. ① Mounting of connecting wires ⓐ Open the air inlet panel. ⓑ Remove the lid. ⓒ Remove the wiring clamp. ⓓ Connect the connecting wire securely to the terminal block. Service panel Use cable for interconnection wiring to avoid loosening of the wires.
- Page 19 '12 • SRK-T-125 ⑤ Securing the indoor unit to the installation plate Installation Steps Indoor unit Pass the pipe through Latch the hole in the wall, (2 locations) and hook the upper part of the indoor unit to the installation plate. Gently push the lower part to secure the unit.
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Page 20: Installation Of Outdoor Unit
'12 • SRK-T-125 Open/close and detachment/attachment of air inlet panel 1 To open, pull the panel at both ends of lower part and release latches, then pull up the panel until you feel resistance. (The air inlet panel stops at approx. 60˚ open position.) 2 To close, hold the panel at both ends of lower part to lower downward and push it slightly until the latch works, then push the center portion slightly. -
Page 21: Air Purge
'12 • SRK-T-125 Air purge 1 Tighten all flare nuts in the pipings both Compound pressure gauge Operation valve Pressure gauge indoor and outside wall so as not to cause leak. Operation valve Gauge manifold (two-way valve) (Designed specifically for R22) -0.1MPa 2 Connect service valve, charge hose, (-76cmHg) -
Page 22: Installation Of Remote Control Switch
'12 • SRK-T-125 Installation of remote control switch Mounting method of battery Fixing to pillar or wall • • Conventionally, operate the wireless remote control Open the battery cover and insert batteries. [R03(AAA, by holding in your hand. Micro) ×2 pieces] •... -
Page 23: Outline Of Operation Control By Microcomputer
'12 • SRK-T-125 7. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER (1) Operation control function by remote controller Remote controller ◆ Operation section FAN SPEED button OPERATION MODE select button Each time the button is pushed, the Each time the button pushed, the indicator is switched over in turn. -
Page 24: Unit On/Off Button
Auto restart function '09•SRK-DB-087D '12 • SRK-T-125 ■ What is 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 automati- • cally resumes operations after the power has been restored. The following settings will be cancelled: •... -
Page 25: Flap Control
'09•SRK-DB-087D '12 • SRK-T-125 (5) Flap control (a) Flap (Flap stopped) (Swing) Angle of Flap from Horizontal Remote controller display COOL , DRY, FAN Approx. 5° Approx. 15° Approx. 30° Approx. 45° Approx. 60° (b) Swing In COOL, DRY, FAN operation Approx. -
Page 26: Outline Of Cooling Operation
Thermostat ON Thermostat OFF Failure Compressor Indoor fan motor Outdoor fan motor (b) Fan speed switching Model SRK18CL(-3) (-6) Fan speed Auto Auto fan control Speed 8 Speed 6 Speed 4 (8) Outline of automatic operation (a) Determination of operation mode The unit checks the indoor air temperature, determines the operation mode, and then begins in the automatic operation. -
Page 27: Protective Control Function
'12 • SRK-T-125 (9) Protective control function (a) Frost prevention for indoor heat exchanger (During cooling or dehumidifying) Operating conditions Indoor heat exchanger temperature is lower than 2.5ºC. 3 minutes elapsed after the start of operation. Detail of frost prevention operation Compressor Indoor fan Protects the fan tap just before frost prevention control. -
Page 28: Maintenance Data
'12 • SRK-T-125 8. MAINTENANCE DATA (1) Cautions (a) If you are disassembling and checking an air conditioner, be sure to turn off the power before beginning. When working on indoor units, let the unit sit for about minute after turning off the power before you begin work. When working on an outdoor unit, there may be an electrical charge applied to the main circuit (electrolytic condenser), so begin work only after discharg- ing this electrical charge (to DC 0 V or lower). -
Page 29: Troubleshooting Procedure (If The Air Conditioner Runs)
'12 • SRK-T-125 (4) Troubleshooting procedure (If the air conditioner runs) below (5) Self-diagnosis table Indoor unit display panel Description Cause Display (flashing) condition TIMER of trouble light light • Broken heat exchanger sensor When a heat exchanger sensor 1 wire disconnection is detected while operation is 1 time Heat exchanger 1 wire, poor connector... -
Page 30: Inspection Procedures Corresponding To Detail Of Trouble
'12 • SRK-T-125 (6) Inspection procedures corresponding to detail of trouble Sensor error [Broken sensor wire, connector poor connection] Is connector connection good? Correct connection. Is sensor resistance value good? Replace sensor. Replace PCB. ◆ Sensor temperature characteristics (Room temp., indoor heat exchanger temp.,) (Broken wire) (Short circuit) - Page 31 '09•SRK-DB-087D '12 • SRK-T-125 Trouble of outdoor unit Insufficient refregerant amount, Broken compressor wire Service valve close ． (7) Phenomenon observed after shortcircuit, wire breakage on sensor (a) Indoor unit Phenomenon Operation Sensor mode Shortcircuit Disconnected wire Room temperature Cooling sensor Heat exchanger Cooling...
- Page 32 '09•SRK-SM-087D '12 • SRK-T-125 (8) Checking the indoor electrical equipment (a) Indoor PCB check procedure Is there voltage between terminal Inspect power source blocks ① and ② ? (AC 220/230/240V) for outdoor unit. Replace fuse. Is the fuse burnt out? (3.15 A) Force cooling operation Is there voltage between terminal blocks ②...
- Page 33 '09•SRK-DB-087D '12 • SRK-T-125 (9) How to make sure of wireless remote controller The figare below shows the SRK series.
- Page 34 '12 • SRK-T-125...
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Page 35: Parts List
'12 • SRK-T-125 PARTS LIST INDOOR UNIT SRK18CL SRK18CL-3 SRK18CL-6 OUTDOOR UNIT SRC18CL SRC18CL-3 SRC18CL-6... - Page 36 '12 • SRK-T-125 PANEL & FAN ASSY CRAE0255...
- Page 37 '12 • SRK-T-125 SRK18CL / SRK18CL-3 / SRK18CL-6 END ITEM NO. : RMA002F019 / RMA002F019A / RMA002F019B Recommendable Purchased Q'ty Part No. Part Name RE.Q Note 1000 1-7 RMA102A101 PANEL ASSY, FRONT 1 RKY122A002 PANEL ASSY, FRONT 2 RKY435A003 GRILLE, AIR IN (TOP)
- Page 38 '12 • SRK-T-125 HEAT EXCH. & CONTROL CRAE0256...
- Page 39 '12 • SRK-T-125 SRK18CL / SRK18CL-3 / SRK18CL-6 END ITEM NO. : RMA002F019 / RMA002F019A / RMA002F019B Recommendable Purchased Q'ty Part No. Part Name RE.Q Note 1000 1-6 RMA301A005 HEAT EXCH ASSY (AIR) 1 RMA311A002 HEAT EXCH (AIR) 2 RMA315D005...
- Page 40 '12 • SRK-T-125 PANEL & FAN ASSY CRBE0313...
- Page 41 '12 • SRK-T-125 SRC18CL / SRC18CL-3 / SRC18CL-6 END ITEM NO. : RMC003F028 / RMC003F028A / RMC003F028B Recommendable Purchased Q'ty Part No. Part Name RE.Q Note 1000 1 RWC122A004B PANEL ASSY,FRONT 2 RWC123A005J PANEL ASSY,SIDE(R) 3 RWC123A008 PANEL,SIDE(L) 4 RWC124A004F PANEL,ASSY,TOP 5 RWC132A007 PANEL ASSY,SERVICE 6 RWC435A002...
- Page 42 '12 • SRK-T-125 HEAT EXCH. & CONTROL (LIQ.) (GAS) CRBE0343...
- Page 43 '12 • SRK-T-125 SRC18CL / SRC18CL-3 / SRC18CL-6 END ITEM NO. : RMC003F028 / RMC003F028A / RMC003F028B Recommendable Purchased Q'ty Part No. Part Name RE.Q Note 1000 1-3 RMC301A018 HEAT EXCH ASSY(AIR) 1 RMC311A005 HEAT EXCH(AIR) 4 RCK116A002 BRACKET(VALVE) 5 RWC381A018A VALVE,SERVICE(1/4") 2 LIQ.
- Page 44 RESIDENTIAL AIR-CONDITIONING TECHNICAL MANUAL & PARTS LIST Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice. Copyright MITSUBISHI HEAVY INDUSTRIES, LTD.