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MLCAC-UTSM-2011-02 

Features 

Outdoor Units 

43 

7.2. Solving steps for typical malfunction 

(1) For indoor unit 

a. Indoor room temperature sensor is abnormal 

 

 

 

 

 

 

 

 

 

 

 
 

b.    Evaporator temperature sensor is abnormal 

 

 

 

 

 

 

 

 

 

 

 

 
 
 

c. Outdoor unit malfunction   

 

 

 

Outdoor unit malfunction

 

Whether the outdoor unit is power on 

Measure whether the voltage of the communication line’s red and black end 

between the indoor and outdoor unit is +5V 

Replace indoor PCB 

 

Replace the outdoor unit 

board

 

No 

 

Yes 

 

Check the indoor unit main board CN5 or replace the main control board 

Yes 

 

Check when the power is on   

No 

 

Yes 

Indoor room temperature sensor is abnormal 

Whether the resistance of the room temp. sensor is 10K 

 

Replace room temp. sensor 

 

Replace indoor PCB 

 

Yes 

No 

Evaporator temperature sensor is abnormal 

 

Whether the resistance of the evaporator temp. sensor is 10K 

 

Replace evaporator temp. sensor 

 

Replace indoor PCB 

 

Yes 

No 

Summary of Contents for PAC247C-I

Page 1: ...All Service Manual PAC366FC I PAC486FC I PAC606FC I PAC366FC O PAC486FC O PAC606FC O PAC247C I PAC367C I PAC487C I PAC247C O PAC367C O PAC487C O ...

Page 2: ...s i Part 1 General Information 1 Part 2 Indoor Units 5 Part 3 Outdoor Units 31 Part 4 Installation 49 Part 5 Control 60 The specifications designs and information in this book are subject to change without notice for product improvement ...

Page 3: ...M 2011 02 General Information General Information 1 Part 1 General Information 1 Model Names of Indoor Outdoor Units 2 2 External Appearance 3 2 1 Indoor Units 3 2 2 Outdoor Units 3 3 Nomenclature 3 4 Features 4 ...

Page 4: ... 220 230V 60Hz 1Ph C R221H6R Sanyo PAC486FC I 48000 PAC486FC O 220 230V 60Hz 1Ph C SB301H6B Sanyo PAC606FC I 60000 PAC606FC O 220 230V 60Hz 1Ph C SB351H6A Sanyo 1 2 Four way Cassette Indoor Unit Indoor units model Capacity Btu h Matched outdoor units model Power supply Compressor model Compressor brand Cooling Only PAC247C I 24000 PAC247C O 220 230V 60Hz 1Ph PH361X3CS 3KUU GMCC PAC367C I 36000 PAC...

Page 5: ......

Page 6: ...rious appearance to choose Customer can choose 3 colors GREY SILVER GREY CHAMPAGNE choose 3 supporting cover PLASTIC IRON STEEL 2 Much better performance and efficiency 3 Compact body with more competitive loading capacity 4 Reliable and well know compressors 5 24V control start up safety 6 We adapt throttle device adopts piston installed in indoor unit easy to maintain 7 Easy to install the unit ...

Page 7: ...MLCAC UTSM 2011 02 Features General Information 5 Part 2 Indoor Units Four way Cassette Type 6 Ceiling Floor Type 20 ...

Page 8: ...10 06 6 Four way Cassette Type Four way Cassette Type 1 Features 8 2 Dimensions 11 3 Service Space 12 4 Wiring Diagrams 13 5 Electric Characteristics 15 6 Sound Levels 15 7 Accessories 16 8 The Specification of Power 17 9 Field Wiring 19 ...

Page 9: ......

Page 10: ...vaporator sufficient airflow volume guarantees the excellent capacity 4 The adoption of the most advanced 3 Dimensional Screw fan Reduces the air resistance passing through Smoothes the air flow Makes air speed distribution to the heat exchange uniform 5 Fresh air makes life healthier and more comfortable 6 Drainage pump can take up the condenser water to750mm 7 Ultra thin machine body to easy ins...

Page 11: ... can acquire high heat exchanger effect 10 More strengthening rib design around the panel preventing the distortion for the panel 11 New outlet frame design to make the phenomena of coagulation great improvement prevent the condensing water from damaging the air guide strip 12 Adding rib on the panel of fan outlet which can avoid the air outlet direct flow to people 13 4 speeds available optional ...

Page 12: ...uct pipe hence air supplying from the four sides to nearby small room 16 Optimal design smaller Control Box Space saving and convenient for wiring Using fire resistance galvanized steel for E box material Metal box make the control part more stable and prevent damaging 17 New Panel for optional 360 degree air outlet ...

Page 13: ...ions Four way Cassette 11 2 Dimensions PAC247C I 4 install hanger Gas side Liquid side E parts box Pump inspect hole Drain hole PAC367C I PAC487C I 4 install hanger Gas side Liquid side E parts box Pump inspect hole Drain hole ...

Page 14: ...Service Space MLCAC UTSM 2011 02 12 Four way Cassette 3 Service Space 1000mm 1000mm 1000mm 1000mm ...

Page 15: ...MLCAC UTSM 2011 02 Wiring Diagrams Four way Cassette 13 4 Wiring Diagrams PAC247C I PAC367C I ...

Page 16: ...Wiring Diagrams MLCAC UTSM 2011 02 14 Four way Cassette PAC487C I ...

Page 17: ... Min Max MCA MFA PAC247C I 60 220 230V 198V 242V 0 66 10 PAC367C I 60 220 230V 198V 242V 1 0 10 PAC487C I 60 220V 198V 242V 1 31 10 Remark MCA Min Current Amps A MFA Max Fuse Amps A 5 Sound Levels 1 0m FOUR WAY CASSETTE TYPE Microphone Noise level dB A Model H M L PAC247C I 48 43 41 PAC367C I 55 48 43 PAC487C I 55 45 41 ...

Page 18: ...et pipe sheath 1 Out let pipe clasp 1 Drain joint 1 Drainpipe Fittings Seal ring 1 Remote controller Its Frame 1 Remote controller holder 1 Mounting screw ST2 9 10 C H 2 Remote controller Its Frame Alkaline dry batteries AM4 2 Owner s manual 1 Others Installation manual 1 Expansible hook 4 Installation hook 4 Installation accessory The product you have might not be provided the following accessori...

Page 19: ...uit Breaker Fuse A 30 25 30 25 35 30 Indoor Unit Power Wiring mm 2 3x2 5 3x2 5 3x2 5 Ground Wiring 2 5 3 3 3 3 Outdoor Unit Power Wiring 3x2 5 3x3 3 3x3 3 Indoor Outdoor Connecting Wiring mm 2 Weak Electric Signal 2x1 0 2x1 0 2x1 0 For 220V 60Hz 3PH Outdoor unit type Type Cooling only 36000 48000 Phase 1 Phase 1 Phase Indoor unit Frequency and Voltage 220 230V 60Hz 220 230V 60Hz Phase 3 Phase 3 Ph...

Page 20: ...iring mm 2 3x1 5 3x1 5 Ground Wiring 2 0 2 5 Outdoor Unit Power Wiring 3x2 0 3x2 5 Indoor Outdoor Connecting Wiring mm 2 Weak Electric Signal 2x1 0 2x1 0 Type Cooling Heating 36000 48000 Phase 1 Phase 1 Phase Indoor unit Frequency and Voltage 220 230V 60Hz 220 230V 60Hz Phase 3 Phase 3 Phase Power Outdoor unit Frequency and Voltage 380V 420V 60Hz 380V 420V 60Hz Indoor Circuit Breaker Fuse A 15 10 ...

Page 21: ...MLCAC UTSM 2011 02 Field Wiring Four way Cassette 19 8 Field Wiring Wiring chart PAC247C I PAC367C I ...

Page 22: ...011 02 20 Ceiling Floor Type Ceiling Floor Type 1 Features 21 2 Dimensions 22 3 Service Space 23 4 Wiring Diagrams 24 5 Electric Characteristics 26 6 Sound Levels 27 7 Accessories 28 8 The Specification of Power 29 9 Field Wiring 30 ...

Page 23: ...ing 1 3 Two direction auto swing vertical horizontal and wide angle air flow Air flow directional control minimizes the air resistance and produces wilder air flow to vertical direction The range of horizontal air discharge is widened which secures wider air flow distribution to provide more comfortable air circulation no matter where the unit is set up 1 4 Three level fan speed more humanism desi...

Page 24: ...loor Type 2 Dimensions a Wall mounting installation b Ceiling installation Capacity Btu h A B C D E F G 36000 1280 660 203 795 506 1195 200 48000 60000 1670 680 240 1070 450 1542 200 Note The dimension of 48000Btu h and 60000Btu h are the same ...

Page 25: ...MLCAC UTSM 2011 02 Service Space Ceiling Floor Type 23 3 Service Space ...

Page 26: ...Wiring Diagrams MLCAC UTSM 2011 02 24 Ceiling Floor Type 4 Wiring Diagrams PAC366FC I ...

Page 27: ...MLCAC UTSM 2011 02 Wiring Diagrams Ceiling Floor Type 25 PAC486FC I PAC606FC I ...

Page 28: ...Type 5 Electric Characteristics Indoor Units Power Supply Model Hz Voltage Min Max MCA MFA PAC366FC I 60 220 230V 198V 242V 1 18 15 PAC486FC I 60 220 230V 198V 242V 1 10 15 PAC606FC I 60 220 230V 198V 242V 1 10 15 Remark MCA Min Current Amps A MFA Max Fuse Amps A ...

Page 29: ...MLCAC UTSM 2011 02 Sound Levels Ceiling Floor Type 27 6 Sound Levels Ceiling Floor Noise level dB A Model H M L PAC366FC I 56 53 50 PAC486FC I 54 50 47 PAC606FC I 54 50 47 ...

Page 30: ...Quantity 1 Hook 2 2 Hanging arm 2 Installation fittings 3 pipel connector 1 5 Remote controller 1 6 Remote controller holder 1 7 Mounting screw ST2 9 10 C H 2 Remote controller Its holder 8 Alkaline dry batteries AM4 2 9 Owner s manual 1 10 Installation manual 1 Others 11 Remote controller manual 1 ...

Page 31: ...uency and Voltage 220 230V 60Hz 220 230V 60Hz Phase 3 Phase 3 Phase Power Outdoor unit Frequency and Voltage 220V 60Hz 220V 60Hz Indoor Circuit Breaker Fuse A 25 15 25 15 Outdoor Circuit Breaker Fuse A 35 25 50 38 Indoor Unit Power Wiring mm 2 3x2 5 3x2 5 Ground Wiring 4 4 Outdoor Unit Power Wiring 5x4 0 5x4 0 Indoor Outdoor Connecting Wiring mm 2 Weak Electric Signal 2x1 0 2x1 0 For 380V 420 3N 6...

Page 32: ...Outdoor Units MLCAC UTSM 2011 02 30 Outdoor Units 9 Field Wiring PAC366FC I PAC486FC I PAC606FC I ...

Page 33: ...M 2010 06 Outdoor Units Outdoor Units 31 Part 3 Outdoor Units 1 Dimensions 32 2 Service Space 33 3 Piping Diagrams 34 4 Wiring Diagrams 35 5 Electric Characteristics 39 6 Operation Limits 40 7 Troubleshooting 41 ...

Page 34: ...ion Service Valve Size Unit Model Btu h H in mm W in mm L in mm Liquid in Vapor in PAC247C O 24 15 16 633 21 7 8 554 21 7 8 554 3 8 5 8 PAC367C O PAC366FC O 29 7 8 759 21 7 8 554 21 7 8 554 3 8 3 4 PAC487C O PAC486FC O 29 7 8 759 28 710 28 710 3 8 3 4 PAC606FC O 33 3 16 843 28 710 28 710 3 8 3 4 ...

Page 35: ...MLCAC UTSM 2011 02 Features Outdoor Units 33 2 Service Space ...

Page 36: ...ompressor Throttle Orifice evaporator temp sensor room temp sensor Outdoor unit Indoor units T2 T1 PAC487C O PAC486FC O PAC606FC O Direction of refrigerant flow cooling mode compressor Throttle Orifice evaporator temp sensor room temp sensor Outdoor unit Indoor units T5 T2 T1 High pressure switch Low pressure switch Discharge temp sensor ...

Page 37: ...MLCAC UTSM 2011 02 Features Outdoor Units 35 4 Wiring Diagrams PAC247C O ...

Page 38: ...Features MLCAC UTSM 2011 02 36 Outdoor Units PAC367C O PAC366FC O ...

Page 39: ...MLCAC UTSM 2011 02 Features Outdoor Units 37 PAC487C O PAC486FC O ...

Page 40: ...Features MLCAC UTSM 2011 02 38 Outdoor Units PAC606FC O ...

Page 41: ...utdoor Units 39 5 Electric Characteristics Outdoor Unit Model Hz Voltage Min Max PAC247C O 60 220 230V 198V 242V PAC367C O PAC366FC O 60 220 230V 198V 242V PAC487C O PAC486FC O 60 220 230V 198V 242V PAC606FC O 60 220 230V 198V 242V ...

Page 42: ...or temperature Room temperature Cooling operation 21 43 17 30 Heating operation 5 24 17 30 10 15 25 30 35 20 15 20 25 30 35 40 45 Indoor temperature WB Outdoor temperature DB STD Cooling 21 10 15 25 30 35 20 10 5 0 5 10 15 20 Indoor temperature DB Outdoor temperature WB STD Heating 25 ...

Page 43: ...d cooling Operation lamp flashes at 5Hz Timer lamp on Nothing wrong with the unit when LED indicate these contents 5 Protection Outdoor unit malfunction All lamps flashing at 5Hz 6 Error Room temperature sensor checking channel is abnormal Timer lamp flashing at 5Hz 7 Error Evaporator sensor checking channel is abnormal Operation lamp flashing at 5Hz 8 Error Condenser sensor checking channel is ab...

Page 44: ...n Flash Flash Extinguish LEDs for the indication of outdoor trouble Type Contents LED1 LED2 LED3 Trouble Phase sequence Flash Off Off Trouble Lack of phase A B Flash Off Off Trouble Lack of phase C Off Off Off Trouble Protection of Low pressure Flash Flash Off Trouble Overload of current Off Off Flash Trouble Communication malfunction Flash Off Flash Trouble Open circuit and short circuit trouble ...

Page 45: ...e s red and black end between the indoor and outdoor unit is 5V Replace indoor PCB Replace the outdoor unit board No Yes Check the indoor unit main board CN5 or replace the main control board Yes Check when the power is on No Yes Indoor room temperature sensor is abnormal Whether the resistance of the room temp sensor is 10K Replace room temp sensor Replace indoor PCB Yes No Evaporator temperature...

Page 46: ... Yes No Check PCB board or replace the main control board Replace EEPROM Yes No Full water malfunction Check whether the water level switch is inserted well Check whether the water level switch is broken Check PCB board or replace the main control board Replace the water level switch Yes No Check whether the water pump is normal Yes Insert the water level switch well No Yes Replace the water pump ...

Page 47: ...e error b Overload of current c Lack of phase Phase sequence error Change the order of two of the wires to power supply Switch on the unit again If the problem can not be solved the outdoor PCB is defective Overload of current Check the current normally Is the current in rated range The outdoor PCB is defective Possible reason 1 Outdoor fan is defective 2 The compressor is defective 3 Refrigerant ...

Page 48: ...mp Is it k1 or K2 open Is temp protective switch K1 open Possible reason 1 The wires is loose to K1 2 Air or other gas in the refrigerant 3 Heat exchanger is dirty 4 Outdoor fan or fan blade is defective 5 Outdoor unit is bad ventilation 6 Refrigerant is leakage 7 K1 switch is defective Is pressure protective switch K2 open Yes Yes Yes Possible reason 1 The wires is loose to K2 2 Air or other gas ...

Page 49: ...mal Possible reason 1 Air or other gas in the refrigerant 2 Heat exchanger is dirty 3 Outdoor fan or fan blade is defective 4 Outdoor unit is bad ventilation 5 Refrigerant is leakage 6 Outdoor PCB is defective Replace the sensor No Yes Is connection to connector of temp sensor good Check the resistance of the temp sensor according to Annex 1 Repair connector No Yes Is it the resistance is normal I...

Page 50: ...000 36 6 13059 76 1 34105 116 0 40060 3 41 5878 37 5 87359 77 1 29078 117 0 38991 2 39 8239 38 5 62961 78 1 25423 118 0 37956 1 37 1988 39 5 39689 79 1 21330 119 0 36954 0 35 2024 40 5 17519 80 1 17393 120 0 35982 1 33 3269 41 4 96392 81 1 13604 121 0 35042 2 31 5635 42 4 76253 82 1 09958 122 0 3413 3 29 9058 43 4 57050 83 1 06448 123 0 33246 4 28 3459 44 4 38736 84 1 03069 124 0 32390 5 26 8778 4...

Page 51: ...stallation Installation 49 Part 4 Installation 1 Precaution on Installation 50 2 Vacuum Dry and Leakage Checking 51 3 Additional Refrigerant Charge 53 4 Water Drainage 54 5 Insulation Work 57 6 Wiring 58 7 Test Operation 59 ...

Page 52: ...olutely as original state Every time you connect it first loosen the nuts at the part of stop value then connect the flare pipe immediately in 5 minutes If the nuts have been loosened for a long time dusts and other impurities may enter the pipe system and may cause malfunction later So please expel the air out of the pipe with refrigerant before connection c Expel the air after connecting the ref...

Page 53: ...o different construction environment common vacuum dry special vacuum dry Common vacuum dry procedure Vacuum dry for the first time connect the all purpose detector to the inlet of liquid pipe and gas pipe and run the vacuum pump more than two hours the vacuum pump should be below 755mmHg If the pump can t achieve below 755mmHg after pumping 2 hours moisture or leakage point will still exist in th...

Page 54: ...oy for the second time Fil l nitrogen to 0 5Kgf cm2 Because nitrogen is for drying gas it has vacuum drying effect during vacuum destroy But if the moisture is too much this method can t dry thoroughly So please pay more attention to prevent water entering and forming condensation water Vacuum dry for the second time 1h pumping Determinant Pass if achieving below 755mmHg If 755mmHg can t be achiev...

Page 55: ...charged e Refrigerant containers shall be opened slowly f Always use protective gloves and protect your eyes when charging refrigerant The outdoor unit is factory charged with refrigerant Calculate the added refrigerant according to the diameter and the length of the liquid side pipe of the outdoor unit indoor unit For 12kBtu h outdoor unit throttle R g D mm L m φ6 4 Less than 5m One way Added Ref...

Page 56: ...ulated to prevent atomization Drainpipe should be installed before installing indoor unit After powering on there is some water in water receiver plate Please check if the drain pump can operate correctly All connection should be firm Wipe color on PVC pipe to note connection Climbing horizontal and bending conditions are prohibited The dimension of drainpipe can t less than the connecting dimensi...

Page 57: ...1 50 l hr I D mm Thick Hard PVC 14 Φ25 3 0 Hard PVC 14 88 Φ30 3 5 Hard PVC 88 33 4 Φ40 4 0 Hard PVC 175 334 Φ50 4 5 Hard PVC 334 Φ80 6 0 4 5 Drainage test 1 Drainage without drain pump After finishing drainpipe installation pour some water into the water receiver plate to check if the water flows smoothly 2 Drainage with drain pump Poke the Water Level Switch remove the cover use water pipe to pou...

Page 58: ...the alarm lamp flashes even overflow from the water receipt plate Keep on pouring water until it gives an alarm signal for high water level check if the pump drains water at once If the water level can t fall below the alarmed water level after 3 minutes the air conditioner will stop Turn off the power and drain the remained water and then turn on the air conditioner Note the drain stuff in the ma...

Page 59: ...bove 100 2 Thickness choice for insulation material Insulation material thickness is as follows Pipe diameter mm Adiabatic material thickness Φ6 4 Φ25 4 10mm Refrigerant pipe Φ28 6 Φ38 1 15mm Drainage pipe Inner diameterΦ20 Φ32 6mm 5 2 Refrigerant pipe insulation 1 Work Procedure Before laying the pipes the non jointing parts and non connection parts should be heat insulated When the gas proof tes...

Page 60: ...f the pipe s Make sure there s no clearance in the joining part of the accessorial insulation material and local preparative insulation material 5 3 Drainage pipe insulation 1 The connection part should be insulated or else water will be condensing at the non insulation part 5 4 Note 1 The jointing area expanding area and the flange area should be heat insulated after passing the pressure test 2 T...

Page 61: ...he air conditioner is pre heated by turning on the power 3 According to the user s requirement install the remote controller when the remote controller s signal can reach the indoor unit smoothly 4 Test operation Set the air conditioner under the mode of COOLING with the remote controller and check the following points Indoor unit Whether the switch on the remote controller works well Whether the ...

Page 62: ...Control MLCAC UTSM 2011 02 60 Control Part 5 Control 1 Wireless Remote Controller 61 2 Wired Remote Controller 63 ...

Page 63: ... 1 RG51Q BG C E General Function for wireless remote controller Model and Specification Model RG51Q BG C E Rated voltage 3 0V 2pieces of LR03 7 batteries Min voltage for sending signal of CPU 2 4V Effective receiving distance 8m when using 3 0 voltage it Gets 11m Operation condition 5 60 ...

Page 64: ... FAN SPEED Fan speed will be selected in following sequence once pressing this button AUTO LOW MED HIGH 9 TIME ON For time ON setting Once pressing this button the time will increase by 0 5 hour When the set time exceeds 10 hours pressing the button will increase the time by 1 hour Adjusting the figure to 0 00 will cancel time ON setting 10 ECO Activate or turn off economic operation mode It is su...

Page 65: ...tton MODE Press MODE button to select COOL DRY HEAT or FAN ONLY mode HEAT is invalid for COOL ONLY wire controller AUTO COOLING DEHUMIDIFY HEATING FAN 2 Fan speed button FAN SPEED Press FAN SPEED to select fan speed from AUTO LOW MED and HIGH NOTE some air conditioners have no MED fan speed and then the MED is regarded as HIGH 3 Economical operation displays ...

Page 66: ...ck set or clock operation it must press CONFIRM to complete the set 6 TIMER ON OFF display Display ON at the state of TIMER ON adjustment or after only set the TIMER ON Display OFF at the state of TIMER OFF adjustment or after only set the TIMER OFF Display ON OFF if simultaneously set the mode of TIMER ON and TIMER OFF 7 Temperature display area Usually display the set temperature Press the butto...

Page 67: ...rd by o 5 hours When the set time is over 10 hours each time you push the button the time moves forward by 1 hour If want to cancel the TIMER OFF then adjust the time of TIMER OFF as 0 0 4 CLOCK button Normally display the clock set currently display 12 00 for the first electrifying or resetting When push the button for 4 seconds the hour part on the clock display flashes every 0 5 seconds then pu...

Page 68: ...d A B C D E in indoor unit and fixing a infrared emitter whose anode and cathode connecting with A and B near the receiver in the Indoor Unit Switch Board then connecting the terminal 5v GND Run in the Switch Board to C D E respectively NOTE Never turn screws too tightly or else the cover would be dented or the Liquid Crystal breaks Please leave enough long cable for maintenance of the Wire Contro...

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