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Mitsubishi Heavy Industries SRK28HJ Technical Manual Download Page 35

WALL MOUNTED TYPE
ROOM AIR-CONDITIONER

No.036（1.1A）R

Air-Conditioning & Refrigeration Systems Headquarters

16-5, 2-chome, Kounan, Minato-ku, Tokyo, 108-8215, Japan

Fax : (03) 6716-5926

Большая библиотека технической документации

http://splitoff.ru/tehn-doc.html   

каталоги, инструкции, сервисные мануалы, схемы.

Summary of Contents for SRK28HJ

Page 1: ...R CONDITIONER Split system air to air heat pump type SRK28HJ SRK40HJ Collection data Manual No 06 SRK T 058 Большая библиотека технической документации http splitoff ru tehn doc html каталоги инструкции сервисные мануалы схемы ...

Page 2: ... 8 4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 10 5 APPLICATION DATA 20 5 1 Selection of location for installation 21 5 2 Installation of indoor unit 22 5 3 Installation of outdoor unit 24 5 4 Refrigerant piping 24 5 5 Test run 26 5 6 Precautions for wireless remote controller installation and operation 26 6 MAINTENANCE DATA 27 6 1 Trouble shooting 27 6 2 Servicing 31 6 3 Power supply remote o...

Page 3: ...on When the remote control switch is set on auto it will either automatically decide operation mode such as cooling heating and thermal dry or operate in the operation mode before it has been turned to automatic control 3 Self diagnosis Function We are constantly trying to do better service to our customers by installing such judges that show abnormality of operation as follows 1 2 How to read the...

Page 4: ...ushion rubber for compressor Electric heater Operation control Operation switch Wireless Remote controller Room temperature control MC Thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Orange ECONOMY Green Safety equipment Dome mounted protector for compressor Internal thermostat for fan motor O D mm in Liquid line ø6 35 1 4 Gas line ø9 52 3 8 Connecting method Flare connecting Attached length...

Page 5: ...essor Electric heater Operation control Operation switch Wireless Remote controller Room temperature control MC Thermostat Pilot lamp RUN Green TIMER Yellow HI POWER Orange ECONOMY Green Safety equipment Dome mounted protector for compressor Internal thermostat for fan motor O D mm in Liquid line ø6 35 1 4 Gas line ø12 7 1 2 Connecting method Flare connecting Attached length of piping Liquid line ...

Page 6: ...more 6minormore fromstoptostoporfromstarttostart Max 5m Max 5m Outdoor air temperature Upper lower limits Difference in height between indoor and outdoor units When above outdoor unit When below outdoor unit Item Model 2 3 Exterior dimensions 1 Indoor unit Model SRK28HJ Unit mm 15 67 51 62 18 780 VIEWA 15 760 170 450 170 Terminalblock PipingforGas 9 52 390 PipingforLiquid 6 35 440 Drainhose600 16 ...

Page 7: ...80 VIEWA 15 760 170 450 170 Terminalblock PipingforLiquid 6 35 440 Drainhose600 16 Pipinghole 65 Pipinghole 65 Pipingholeright left 190 3 187 5 61 46 9 2 60 37 6 36 56 9 49 PipingforGas 12 7 390 Remote controller A 790 275 Все каталоги и инструкции здесь http splitoff ru tehn doc html ...

Page 8: ...thermistor Piping Gas 12 7 Piping Liquid 6 35 Flareconnecting Check joint 4wayvalve Suction Capillarytube Checkvalve Heatexchanger Compressor Accumulator Discharge Heat exchanger thermistor Coolingcycle Heatingcycle Indoor unit Outdoor unit Defrost thermostat Highpressureswitch 63H forfanmotorcontrol 6 Все каталоги и инструкции здесь http splitoff ru tehn doc html ...

Page 9: ...osting on outdoor heat exchanger during heating In additions to the foregoing corrections 1 2 the heating capacity needs to be adjusted also with respect to the frosting on the outdoor heat exchanger Outdoor air W B temperature C W B Indoor air W B temperature C W B Heating Cooling Coefficient of cooling Heating capacity in relation to temperature Cooling operation Outdoor air D B temperature C D ...

Page 10: ...or for FMO ZNR Varistor CM Compressor motor 20S 4 way valve coil F Fuse 51C Motor protector for CM FMI Fan motor Indoor unit 52C Magnetic contactor for CM FMO Fan motor Outdoor unit 52X4 5 Auxiliary relay FM Flap motor Table of relay operations Operation Relay Control Cooling Heating Defrost symbol part 52X4 20S 52X5 FMO 52C CM Notes 1 denotes magentized relay denotes demagnetized relay 2 Th1 is r...

Page 11: ...3 52C420S23D Th1 Th2 BK T2 63H 6 4 2 2 6 BK Sh2 OR CFo 7 8 7 BK Cc S R C 51C 23D H 2 1 3 Sh1 8 RD 52X5 52X6 T1 PC 52C 52X4 1 WH 2 OR 3 RD BK BK BK BK WH BL RD 4 1 2 3 4 Indoor unit Outdoor unit Color symbol BK Black BL Blue BR Brown RD Red OR Orange WH White Y GN Yellow Green Meaning of marks Symbol Parts name Symbol Parts name Cc Capacitor for CM Th1 2 Thermistor CFI Capacitor for FMI Tr Transfor...

Page 12: ...This button sets the room temperature ECONOMY button This button changes the ECONOMY operation SET TIMER button This button sets the ON TIMER time or SLEEP time Above figure shows all indications for the purpose of explanation but practically only the pertinent parts are indicated HI POWER operation indicator Indicators during HI POWER operation ECONOMY operation indicator Indicators during ECONOM...

Page 13: ... In case of cooling and dry operation Stops at the level position for one minute Sway operation The flap operation as shown above will repeated In case of heating operation Sway operation When the room temperature controller thermo stat is activated horizontal blowing is applied to prevent cool wind from blowing out Air flow when flaps are used downward in heating Warm are naturally rises Warm air...

Page 14: ...ON or ON Timer this system operates indoor fan with Lo for 20 seconds checks room temperature and allowing decision of operating mode automatically Note 1 Operating Mode is not altered due to change of room temperature When intended to change operating mode switch operation change over dial to the intended mode b Established temperature operate by the established temperature button on remote contr...

Page 15: ... mode Room temperature thermistor Th1 Operating start time amount of time previous to set time that operation begins Under 5 C 60 mins Heating Under 10 C 30 mins Under 15 C 15 mins Over 15 C 5 mins Over 40 C 60 mins Cooling Over 35 C 30 mins Over 30 C 15 mins Under 30 C 5 mins 6 Timer time setting The turn off timer and turn on timer can be set for up to 12 hours in units of 1 hour 7 Night time tu...

Page 16: ...tarting when starting operation and resuming operation by restored thermostat b When the defrosting operation is switched to the heating operation Set ting temp Speed 2 Speed 4 Speed 1 Speed 3 Speed 3 Speed 4 Speed 2 Speed 2 Speed 3 Speed 1 Note 1 Please refer to page 16 regarding dry operation Temp that compres sor stops in HOT SPURT operation A A B B 3 C 1 C 2 C Temp that compres sor stops in or...

Page 17: ...air conditioner would not start for those 3 min where marked Restore the set temperature to the original value when the compressor is stopped once by the thermostat or 40 minutes have elapsed since the operation start c HOT KEEP 1 Cold draft prevention I a Operation timing While defrosting operation b Function The indoor fan is stopped and RUN HOT KEEP lamp flashing 2 Cold draft prevention II a Op...

Page 18: ...erature and thermo stat setting temperature as shown below Operation block area 2 0 3 Room temp Setting temp deg b Start up operation ON OFF OFF 0 3 6 9 12 ON OFF OFF 0 12 Compressor and outdoor fan Set fan speed Indoor fan Start Temperature check Start Temperature check Compressor and outdoor fan Set fan speed Indoor fan Operation block decision C D Block A B Block minutes minutes Speed 1 Speed 1...

Page 19: ...rature of heat exchanger is 0 C or lower 2 As least 10 minutes has passed since the compressor started Indoor heat exchanger temperature C CM FMO re starting condition 1 Temperature of heat exchanger is 7 C or higher 2 As least 3 minutes has passed since the compressor stopped Set fan speed 14 Microcomputer Controlled Timely Defrosting Operation S SRK28HJ a Defrost Start Changes in the difference ...

Page 20: ...low Swing Fan speed Low Timer switch On timer Operation setting Heating On time 3H Temperature setting 19 2 Defrost end SSRK28HJ When remote control operation is performed defrosting will begin after the 3 minute timer operation ends After 3 minutes all operations will stop SSRK40HJ When the remote control operation is performed forced defrosting will start for 1 minute after the three minute time...

Page 21: ...s less than 20 C for more than 3 seconds with the air conditioner OFF will not flashing during operation Note 1 If the above abnormalities happen concurrently the lamp will flashing in the order of item number a through d above 18 High power operation Remote controller HI POWER button on The indoor unit fan rotates at speed 4 for 15 minutes and carries out continuous cooling and heating 19 Economy...

Page 22: ...nstallment execution can be the cause of electric shocks and fires Accurately connect wiring using the proper cable and insure that the external force of the cable is not conducted to the terminal connection part through properly securing it improper connection or securing can result in heat generation or fire Take care that wiring does not rise upward and accurately install the lid service panel ...

Page 23: ...ing sound will not be nuisance to the neighbourhood f A place where servicing space can be secured g A place where vibration will not be enlarge h In heating operation snow deposit on the heat exchanger of outdoor unit must be prevented for keeping the normal perform ance capacity i Snow hood on outdoor unit as in drawing will reduce the frequency of defrost operation When installing the snow hood...

Page 24: ...r Use of bolt anchor Bolt M6 12 Mounting board Nut M6 Mounting board Max 10 b Fixing method of installation board 2 Drilling the and installation of sleeve a Drill a hole with ø65 whole core drill Note 1 Drill a hall with incline of 5 degree from indoor side to outdoor side Indoor side Outdoor side b Adjusting sleeve lenght Option parts Cut off the sleeve collar in case of drawing piping out to re...

Page 25: ...he rear center Note 1 It is designed to collect moisture accu mulated on the rear face in the drain pan Be sure not to accommodate the power cable etc above the chute When arranging the pipe through a hole opened at the center open the knockout hole using nippers etc Loosen the spring clamp and securely insert the drain pipe Note If it is inserted insufficiently water leakage could result Loosen t...

Page 26: ...n water d When installing the unit at a higher place or where it could be toppled with strong winds secure the unit firmly with founda tion bolts wire etc 2 Connection of indoor and outdoor connecting wiring a Connect the wiring according to the number of the indoor terminal block Mis wiring may cause the burning damage and make sure to connect correctly Declining slope Inverted slipe Trap 5 4 Ref...

Page 27: ...k to see that the vacuum gauge reads 0 1MPa 76cm Hg d After completing vacuum operation fully open service valve Both gas and liquid sides with hexagon headed wrench e Check for possible leakage of gas in the connection parts of both indoor and outdoor 4 Insulation of connecting portion 1 Cover the connection portion of the refrigerant piping with the pipe cover and seal them If neglecting to do s...

Page 28: ... 220 230V Temp difference between return air and supply air C Note 1 The data are measured at following conditions Ambient air temperature Indoor side Cooling 27 C DB 19 C WB Heating 20 C DB Outdoor side Cooling 35 C DB 24 C WB Heating 7 C DB 6 C WB b When manipulating the remote controller mounted on a wall Make sure that it works normally i e transmission reception signal is audible before mount...

Page 29: ...wer source and turn it on again in about 1 min and turn the unit on again YES No YES YES Does the trouble occur again Disconnect connectors and connect them again Operate the unit again after confirming that the fuse and the varistor equipped on PCB does not burn out Carry out checks according to detailed check process See later page Unit did not cool etc Is the power on Is the thermostat setting ...

Page 30: ...of room temperature thermistor Fan motor is defective Printed circuit board is defective Compressor is defective Capacitor is defective Gas is short RUN lamp is lights continuously Abnormality of indoor fan motor Fan motor defective printed circuit board defective Yes Yes Yes No Yes No No No No No Yes Yes The fan motor is defective Is the connector connection good Repair the connector Is voltage b...

Page 31: ...he result is positive then proceed as normal Runaway of micro computer Remove receptacle Insert it after 3 min and operate No change Normal operation Indoor lamp of indoor unit does not illuminate Check receptacle voltage Check if PCB fuse is blown Check varistor Check transformer secondary voltage Replace PCB Replace fuse Replace varistor Replace transformer Replace 23DH No Outdoor fan does not o...

Page 32: ...ill not operate Heating will not operate Heating overload protect begins to operate When FM is on AUTO is continuously Hi CM FMo are stopped Notes 1 When the room temperature thermistor Th1 will not operate normally Cooling or heating operation may be run continuously by putting the thermostat setting on CONTINUOUS 2 When switching to the defrost cycle 23DH opens broken connection the machanism re...

Page 33: ...hen immediately retighten it after observing that gas is blow out from the loosened portion e Open the valve 1 and 3 after discharging air from the charge hose A then the gas refrigerant begins flowing from the cylinder into the unit Be sure to erect the refrigerant cylinder upright to let gas refrigerant flow into the unit f When refrigerant has been charged into the system to some extent refrige...

Page 34: ...controller 1 Operation contents 2 Modification method Solder the high speed switching diode manufacturer Matsushita Manufacture type No MA165 to Remote part on the PCB in the direction as shown in the diagram below Power supply ON 3 minute timer operation Power supply OFF Air conditioner STOP Start operation AUTO COOL 26 C DRY 25 C HEAT 25 C AUTO AUTO Continuous Operation change Set temperature Ai...

Page 35: ... 1 1A R Air Conditioning Refrigeration Systems Headquarters 16 5 2 chome Kounan Minato ku Tokyo 108 8215 Japan Fax 03 6716 5926 Большая библиотека технической документации http splitoff ru tehn doc html каталоги инструкции сервисные мануалы схемы ...

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