Related Manuals for Mitsubishi Electric SRK19CIS
Summary of Contents for Mitsubishi Electric SRK19CIS
- Page 1 ROOM AIR-CONDITIONING TECHNICAL MANUAL & PARTS LIST WALL MOUNTED TYPE ROOM AIR-CONDITIONER (Split system, air cooled cooling only type) SRK19CIS, 25CIS...
- Page 2 TECHNICAL MANUAL...
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Page 3: Table Of Contents
CONTENTS 1 GENERAL INFORMATION................3 Specific features ..................3 How to read the model name ..............3 2 SELECTION DATA ................... 4 Specifications .................... 4 Range of usage & limitations ..............6 Exterior dimensions ................. 6 Piping system .................... 8 Selection chart .................. -
Page 4: General Information
1 GENERAL INFORMATION 1.1 Specific features “MITSUBISHI HEAVY INDUSTRIES, LTD” room air-conditioner: SRK series are of split and wall mounted type and the unit consists of indoor unit and outdoor unit with refrigerant precharged in factory. The indoor unit is composed of room air cooling equipment with operation control switch and the outdoor unit is composed of condensing unit with compressor. -
Page 5: Selection Data
SELECTION DATA 2.1 Specifications Model SRK19CIS (Indoor unit) SRC19CIS (Outdoor unit) (220V) Model SRK19CIS SRC19CIS Item Cooling capacity 5200 Power source 1 Phase, 220V, 50Hz Cooling input 1.49 Running current (Cooling) Inrush current Cooling: 3.49 Sound level Hi 45, Me 41, Lo 38... - Page 6 Model SRK25CIS (Indoor unit) SRC25CIS (Outdoor unit) (220V) Model SRK25CIS SRC25CIS Item Cooling capacity 7000 Power source 1 Phase, 220V, 50Hz Cooling input 2.04 Running current (Cooling) 10.2 Inrush current Cooling: 3.43 Sound level Hi 46, Me 42, Lo 39 Noise level Cooling Power level Exterior dimensions...
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Page 7: Range Of Usage & Limitations
Min. 85% of rating Frequency of ON-OFF cycle Max. 10 times/h ON and OFF interval Max. 3 minutes 2.3 Exterior dimensions (1) Indoor unit Models SRK19CIS, 25CIS Unit: mm 1098 Piping hole right (left) Terminal block Indoor unit Installation board 17.3... - Page 8 (2) Outdoor unit Model SRC19CIS 286.4 Drain holes Unit: mm 203.1 Elogated hole 136.9 (2-12 x16) Terminal block 34.6 Ground terminal Service valve (Liquid) ø6.35 (1/4'') Service valve (Gas) ø15.88 (5/8'') Model SRC25CIS Unit: mm Drain holes 2-ø15 25.8 29.8 87.9 Terminal block Service valve (Liquid)
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Page 9: Piping System
2.4 Piping system Model SRK19CIS Indoor unit Outdoor unit Outdoor air Flare connecting Service valve temp. sensor (Gas) Piping Muffler (Gas) Check joint ø 15.88 Humidity sensor accumulator Room temp. Heat Discharge pipe sensor Heat exchanger temp. sensor exchanger sensor... -
Page 10: Selection Chart
2.5 Selection chart Correct the cooling capacity in accordance with the conditions as follows. The net cooling capacity can be obtained in the following way. Net capacity = Capacity shown on specification Correction factors as follows. ( 1 ) Coefficient of cooling capacity in relation to temperatures Cooling Applicable range Indoor air W.B. -
Page 11: Electrical Data
Outdoor unit Indoor unit Heat exchanger Power Source 1 Phase 220V 50Hz JEM-A 250V 3.15A Printed circuit board 52X1 250V 3.15A 52X3 52X4 Color symbol Display Black Wireless Blue R-AMP Printed circuit Orange board Yellow White Yellow/Green Green Meaning of marks Symbol Parts name Symbol... - Page 12 Outdoor unit Indoor unit Heat exchanger Power Source 1 Phase 220V 50Hz JEM-A 250V 3.15A Printed circuit board 52X1 250V 3.15A 52X3 52X4 52X5 Display Color symbol Wireless R-AMP Black Blue Printed circuit Orange board Yellow White Yellow/Green Green Meaning of marks Symbol Parts name Symbol...
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Page 13: Outline Of Operation Control By Microcomputer
4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 4.1 Operation control function by remote control Remote control Models All models ◆ Operation section FAN SPEED button OPERATION MODE select button Each time the button is pushed, the indi- Each time the button is pushed, the indi- cator is switched over in turn. -
Page 14: Unit On/Off Button
Unit indication section RUN light (green) Models All models • Illuminates during operation. • Blinks at the ‘CLEAN operation’. 3 sec. CLEAN operation 1 sec. HI POWER light (green) Illuminates during HIGH POWER operation. ECONO light (orange) TIMER light (yellow) Illuminates during ECONOMY operation. -
Page 15: Custom Cord Switching Procedure
4.4 Custom cord switching procedure If two wireless remote controls are installed in one room, in order to prevent wrong EXTERNAL INPUT WIRED REMOCON operation due to mixed signals, please modify the printed circuit board in the indoor OPE PERMISSION CUSTOM Jumper wire (J4) unit’s control box and the remote control using the following procedure. -
Page 16: Timer Operation
4.6 TIMER operation ( 1 ) Comfortable TIMER setting (ON TIMER) If the TIMER is set at ON when the operation select switch is set at the cooling, or the cooling 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 (temperature of room temperature sensor) and the setting temperature. -
Page 17: Outline Of Cooling Operation
4.7 Outline of cooling operation (1) Operation of major functional components Item When the compressor When the compressor When the compressor goes Functional command is OFF command is ON OFF due to an anomalous stop. components Indoor fan motor Flap and louver ON or OFF ON or OFF Stop position control... -
Page 18: Outline Of Dry Operation
4.8 Outline of dry operation (1) Choose the appropriate operation block area by the difference between room temperature and thermostat setting temperature as shown below. · Operation block area D block C block B block A block –2 Room temp. – Setting temp.(deg) (2) Start up operation C.D block A.B block... -
Page 19: Outline Of Auto Operation
4.9 Outline of auto operation (1) Determination of operation mode The unit checks the room temperature and the outdoor air temperature after operating the indoor and outdoor blowers for 20 seconds, determines the operation mode and the room temperature setting correction value, and then begins in the auto operation. -
Page 20: Regulation Of Outdoor Air Flow
4.11 Regulation of outdoor air flow The fan operates as follows according to the outdoor air temperature. ◆ ◆ SRK19CIS SRK25CGS Cooling, dry Cooling, dry 3rd speed 2nd speed 2nd speed 1st speed 1st speed Outdoor air temp. (˚C) Outdoor air temp. (˚C) 4.12 Stop mode... -
Page 21: External Control (Remote Display)/Control Of Input Signal
4.13 External control (remote display)/control of input signal (1) External control (remote display) output Following output connectors (CnT) are provided on the printed circuit board of indoor unit. • Operation output: Power to engage DC 12V relay (provided by the customer) is outputted during operation. •... -
Page 22: Operation Permission/Prohibition Control
4.14 Operation permission/prohibition control The air conditioner operation is controlled by releasing the jumper wire (J3) on the indoor control board and inputting the external signal into the CnT. (1) The operation mode is switched over between Permission and Prohibition by releasing the jumper wire (J3) on the indoor control board. - Page 23 (2) Dew condensation prevention control [Cooling (including auto), cooling oriented dry operation] (a) Operating condition: When the following conditions are met after 5 minutes or more of continuous operation after operation starts. Prevention control • The humidity sensor value is 68% or higher (b) Operation contents Reset 1) Command of the electronic expansion valve.
- Page 24 (7) Serial signal transmission error protection (a) Purpose: Prevents malfunction resulting from error on the indoor outdoor signals. ↔ (b) Detail of operation: If the compressor is operating and a serial signal cannot be received from the indoor control with outdoor control having serial signals continuously for 1 minute and 55 seconds, the compressor is stopped.
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Page 25: List Of Indoor Unit Jumper Selections
4.16 List of indoor unit jumper selections Jumper Indication on With Factory Jumper Reference Function Name No Jumper (Open) Circuit Board Settings (short circuited) Page EXTERNAL INPUT External input switching LEVEL INPUT PULSE INPUT Page 20 WIRED REMOCON No function OPE PERMISSION Operation permission/prohibition Normal operation... -
Page 26: Application Data
5 APPLICATION DATA SAFETY PRECAUTIONS • Please read these “Safety Precautions” first then accurately execute the installation work. Though the precautionary points indicated herein are divided under two headings, WARNING and CAUTION , those points • which are related to the strong possibility of an installation done in error resulting in death or serious injury are listed in the WARNING section. -
Page 27: Selection Of Location For Installation
5.1 Selection of location for installation (1) Indoor unit Where there is no obstructions to the air flow and where the cooled air can be evenly distributed. (b) A solid place where the unit or the wall will not vibrate. 6.5 cm Right side... -
Page 28: Installation Of Indoor Unit
5.2 Installation of indoor unit (1) Installation of installation board (a) Fixing of installation board Look for the inside wall structures (Intersediate support or INSTALLATION SPACE (INDOOR UNIT) (FRONT VIEW) pillar and firaly install the unit after level surface has been checked.) Unit: mm Mating mark for level surface... - Page 29 (3) Preparation of indoor unit (a) Mounting of connecting wires 1) Open the air inlet panel. 2) Remove the lid. 3) Remove the wiring clamp. 4) Connect the connecting wire securely to the terminal block. Use cables for interconnection wiring to avoid loosening of the wires.
- Page 30 [Drain hose changing procedures] 1. Remove the drain hose. 2. Remove the drain cap. 3. Insert the drain cap. 4. Connect the drain hose. · · · · Remove the drain hose, Remove it with hand or Insert the drain cap which was removed at I n s e r t t h e d r a i n h o s e making it rotate.
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Page 31: Installation Of Outdoor Unit
5.3 Installation of outdoor unit (1) Installation of outdoor unit Make sure that the unit is stable in installation. Fix the unit to stable base. When installing the unit at a higher place or where it could be toppled by strong winds, secure the unit firmly with foundation bolts, wire, etc. - Page 32 (3) Air purge Tighten all flare nuts in the pipings both indoor and outside will so as not to cause leak. Connect service valve, charge hose, manifold valve and vacuum pump as is illustrated below. Open manifold valve handle Lo to its full width, and perform vacuum or evacuation. Continue the vacuum or evacuation operation for 15 minutes or more and check to see that the vacuum gauge reads –...
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Page 33: Test Run
(3) Explain to the customer on the correct usage of the air conditioner in simple layman’s terms. (4) Make sure that drain flows properly. (5) Standard operation data (220V) Model SRK19CIS SRK25CIS Item Low pressure (MPa) Cooling 0.42 ~ 0.62 0.39 ~ 0.59... -
Page 34: Maintenance Data
6 MAINTENANCE DATA 6.1 Troubleshooting procedures for electrical equipment (1) Cautions 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 1 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 discharging this electrical charge (to DC 10 V or lower). - Page 35 (4) Troubleshooting procedure (If the air conditioner runs) Confirm the contents of the customer complaint. The cause of the trouble can be specifically identified. Eliminate the cause of the trouble and perform an Check the self-diagnosis display. operation check. See page 35. Identify the faulty component by using the check procedure corresponding to the content of the trouble.
- Page 36 (5) Self-diagnosis table When this air conditioner performs an emergency stop, the reason why the emergency stop occurred is displayed by the flashing of display lights. If the air conditioner is operated using the remote control 3 minutes or more after the emergency stop, the trouble display stops and the air conditioner resumes operation.
- Page 37 (6) Inspection procedures corresponding to detail of trouble [Broken sensor wire, Sensor error connector poor connection] Is connector connection good? Correct connection. Is sensor resistance value good? Replace sensor. Replace PCB. Sensor temperature characteristics Discharge pipe sensor temperature characteristics (Room temp., indoor unit heat exchanger Ω...
- Page 38 [Gas shortage, defective discharge Over heat of compressor pipe sensor] Is discharge pipe sensor Connector connection check, resistance resistance value good? value check, replacement of discharge pipe (page 36) sensor Check if there are any Does trouble persist after Is sufficient quantity of refrigerant places where gas is leaking.
- Page 39 [Compressor malfunction of Abnormality of outdoor unit insufficient gas (refrigerant)] Replace capacitor for compressor. Does compressor operation? Is capacitor for compressor normal? Is connector for compressor connection Correct connection good? Replace compressor. Is heat exchanger sensor resistance Replace heat exchanger sensor value good? Check if there are any places where Is refrigerant amount normal?
- Page 40 (8) Checking the indoor electrical equipment (a) Indoor unit circuit board check procedure 1) Press the unit’s ON/OFF button for 5 seconds or longer (a beep which indicates receiving will be emitted). Then check the following items. The indoor unit’s fan motor runs. The RUN light lights up.
- Page 41 (9) How to make sure of remote control Is remote Remote control control normal? defects Replace the display. Again pushing operating switch Is the unit operable with remote Normal control? Abnormality is not Operating the unit? found. Defective remote control Does unit ON/OFF button operates? Note (1) Check method of remote control...
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Page 42: Servicing
6.2 Servicing (1) Evacuation The evacuation is an procedure to purge impurities..noncondensable gas, air, moisture from the refrigerant equipment by using a vacuum pump. Since the refrigerant R22 is very insoluble in water, even a small amount of moisture left in the refrigerant equipment will freeze, causing what is called water clogging. - Page 43 MEMO...
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Page 44: Parts List
PARTS LIST INDOOR UNIT SRK19CIS, SRK25CIS OUTDOOR UNIT SRC19CIS, SRC25CIS... - Page 65 ROOM AIR-CONDITIONING TECHNICAL MANUAL & PARTS LIST Manual No. '09·SRK-T·086...