York YOHC 12 Service Manual Download Page 69

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Sketch map of common vacuum dry procedure.

Special vacuum dry procedure

moisture when flushing the refrigerant pipe.

e pipe.

. Vacuum destroy for the second time ······ Fill 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 achieved in 2h, repeat procedure

and .

. Vacuum placing test ······ 1h
. Sketch map of special vacuum dry procedure

This vacuum dry method is used in the following conditions:

There’s

Rainwater may enter into th

Vacuum dry for the first time ······ 2h pumping

Summary of Contents for YOHC 12

Page 1: ...Convertible Console YOHC 12 to 60 SERVICE MANUAL YOHC 12 YOHC 18 YOHC 24 YOHC 36 YOHC 48 YOHC 60 SM YOHC 12 60GB 03 07 ...

Page 2: ...Contents Part 1 General information Part 2 Indoor units Part 3 Outdoor units Part 4 Installation Part 5 Control ...

Page 3: ...Part 1 General Information 1 Model names of Indoor Outdoor Units 2 External Appearance 3 Nomenclature 4 Features ...

Page 4: ...Units Model Names of Indoor Units YOKC 12 YOKC 18 YOKC 24 YOKC 30 YOKC 36 YOKC 48 YOKC 60 Model Names of Outdoor Units YOJC 12 YOJC 18 YOJC 24 YOJC 30 YOJC 36 YOJC 48 YOJC 60 1 External Appearance 1 1 Indoor units 1 2 Outdoor units ...

Page 5: ... Outdoor options A Standard B Low Ambient Kit C Power outdoor Omit for indoor units Indoors A Free matching multi S Single T Duct High Static U Duct standard case Compressor type A AC Inverter D DC Inverter F Fixed M Multi Family A Efficiency Ultra E Eco Ultra H Alps J Atlas K Cassette L Ultra M Multi Ultra R Multi Inverter V Inverter Ultra U Ducted unit O Floor Ceiling Type C Set Cooling only D O...

Page 6: ...and wide angle air flow 4 4 Three level fan speed more humanism design meets different air supply requirement 4 5 Water proof by utilizing the absorbing plastic film on water collector 4 6 Easy operation Auto restart function remote control and optional wire control method 4 7 Low noise level plus compact size 4 8 Universal outdoor design ...

Page 7: ...Part 2 Indoor units Ceiling Floor Type ...

Page 8: ...pe 1 Features 2 Specification 3 Dimensions 4 Service space 5 Piping diagrams 6 Wiring diagrams 7 Capacity Tables 8 Air Velocity and Temperature Distributions 9 Electric Characteristics 10 Sound Levels 11 Exploded view ...

Page 9: ...ctional 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 design meets different air supply requirement 1 5 Water proof by utilizing the absorbing plast...

Page 10: ...ut W 1145 1870 2430 Rated current RLA A 5 3 8 75 11 4 Locked rotor Amp LRA A 26 36 8 61 Thermal protector INNER INNER INNER Capacitor uF 35 370 µF V 50 370 µF V 50 400 µF V Compressor Refrigerant oil ml RB68AF T68 Α68tf 480 ESTER OIL VG74 750 ESTER OIL CG74 950 Model YSK25 6L YSK55 4L YSK55 4L Input W 33 4 31 1 29 5 115 95 78 115 95 78 Capacitor uF 1 2uF 450V 2 5uF 450V 2 5uF 450V Indoor fan motor...

Page 11: ... length x height x width mm 651x559x26 7 775 660 44 850 810 44 Outdoor coil Number of circuits 2 3 4 Outdoor air flow m 3 h 2100 2400 3000 Outdoor noise level dB A 43 48 55 Dimension W H D mm 760 590 285 845 695 335 895 860 330 Packing W H D mm 887x655x355 970X770X395 1043X915X395 Outdoor unit Net Gross weight kg 44 48 52 56 68 70 Refrigerant type Quantity g R410A 1120 R410A 2050 R410A 2600 Design...

Page 12: ...current RLA A 6 58 17 65 17 65 Locked rotor Amp LRA A 61 97 97 Thermal protector INNER INNER INNER Capacitor uF 60uF 440V 60uF 440V Compressor Refrigerant oil ml DAPHNE FV68S 1700 FV68S 1700 FV68S 1700 Model YSK80 4A YSK80 4A YSK80 4A Input W 142 134 132 142 134 132 142 134 132 Capacitor uF 3 5uF 450V 3 5uF 450V 3 5uF 450V Indoor fan motor Speed hi lo r min 1310 1200 1000 1310 1200 1000 1310 1200 ...

Page 13: ...ve tube Coil length x height x width mm 955 915 44 955 915 44 955 915 44 Outdoor coil Number of circuits 8 8 8 Outdoor air flow m 3 h 5000 5000 5000 Outdoor noise level dB A 57 57 57 Dimension W H D mm 990 960 360 990 960 360 990 960 360 Packing W H D mm 1120X1090X435 1120X1090X435 1120X1090X435 Outdoor unit Net Gross weight kg 90 102 90 102 90 102 Refrigerant type Quantity g R410A 3100 R410A 3450...

Page 14: ...5750 Rated current RLA A 6 58 8 22 9 77 Locked rotor Amp LRA A 61 66 67 Thermal protector INNER INNER INNER Capacitor uF Compressor Refrigerant oil ml DAPHNE FV68S 1700 DAPHNE FV68S 1700 DAPHNE FV68S 1700 Model YSK80 4A YSK59 4A YSK59 4A Input W 142 134 132 118 108 101 118 108 101 Capacitor uF 3 5uF 450V 2 5uF 450V 2 5uF 450V Indoor fan motor Speed hi lo r min 1310 1200 1000 820 695 620 820 695 62...

Page 15: ...e level dB A 57 58 58 Dimension W H D mm 990 960 360 940 1245 340 940 1245 340 Packing W H D mm 1120X1090X435 1058X1380X435 1058X1380X435 Outdoor unit Net Gross weight kg 90 102 112 127 112 127 Refrigerant type Quantity g R410A 3100 R410A 4000 R410A 4200 Design pressure high side low side MPa 4 2 2 5 4 2 2 5 4 2 2 5 Liquid side mm inch 12 7 1 2 12 7 1 2 12 7 1 2 Gas side mm inch 19 3 4 19 3 4 19 3...

Page 16: ...Strengthener 980 995 3 2 YOKC 30 YOKC 36 4 12 18 Overhanging hole Á Connecting point of refrigerant pipe gas side Drain point Connecting point of refrigerant pipe Liquid side 402 Strengthener 980 1285 3 3 YOKC 48 YOKC 60 4 12 18 Overhanging hole Á Connecting point of refrigerant pipe gas side Drain point Connecting point of refrigerant pipe Liquid side 402 Strengthener 980 1670 ...

Page 17: ...4 Service space 600mm 600mm ...

Page 18: ...5 Piping Diagrams Remark 1 For YOJC 12 and YOJC 18 accumulator is not included 2 For YOJC 30 YOJC 36 and YOJC 48 check valve and auxiliary capillary is not included ...

Page 19: ...N C N 13 W H I T E 4 3 5 R E D Y G L N 1 2 N C O N N E C TO R S 6 W A Y TE R M I N A L P LU M B SW I N G M O TO R G M 2 6 1 2 YOKC 18 X T1 R T2 X T1 X T2 R T1 X P 1 4 X S 1 4 C A P 1 F A N 1 C N 1 C N 24 T 4 X T2 K M 1 G M 1 F A N 1 D IS P LA Y B O A R D C A P 1 T4 M A I N C O N TR O L B O A R D C N 15 C N 10 C N 16 C N 1 C N 2 C N 3 C N 5 W H IT E X P 1 X S 1 X S 3 X P 3 T OO U T D O O RU N I T Y...

Page 20: ...6 1 3 YOKC 24 6 1 4 YOKC 30 ...

Page 21: ...6 1 5 YOKC 36 6 1 6 YOKC 48 YOKC 60 ...

Page 22: ...ity kW 4 63 4 43 4 27 4 03 3 86 3 74 3 62 Sensitive capacity kW 3 70 3 54 3 41 3 22 3 09 2 99 2 90 32ºC D 23ºC W Input kW 0 97 1 10 1 24 1 38 1 52 1 66 1 79 Heating OUTDOOR CONDITIONS Indoor Conditions 24ºC D 18ºC W 12ºC D 11ºC W 7ºC D 6ºC W 4ºC D 3ºC W 0ºC D 1ºC W 5ºC D 6ºC W 7ºC D 8ºC W 15ºC D 16ºC W Capacity kW 6 56 5 24 4 37 3 93 3 71 3 28 3 06 2 84 15ºC Input kW 1 95 1 56 1 30 1 23 1 17 1 10 ...

Page 23: ...14 6 83 6 58 6 21 5 96 5 78 5 59 Sensitive capacity kW 5 71 5 46 5 27 4 97 4 77 4 62 4 47 32ºC D 23ºC W Input kW 1 53 1 75 1 97 2 19 2 40 2 62 2 84 Heating OUTDOOR CONDITIONS Indoor Conditions 24ºC D 18ºC W 12ºC D 11ºC W 7ºC D 6ºC W 4ºC D 3ºC W 0ºC D 1ºC W 5ºC D 6ºC W 7ºC D 8ºC W 15ºC D 16ºC W Capacity kW 10 35 8 28 6 90 6 21 5 87 5 18 4 83 4 49 15ºC Input kW 3 19 2 55 2 13 2 02 1 91 1 81 1 70 1 4...

Page 24: ...8 98 8 65 8 17 7 84 7 59 7 35 Sensitive capacity kW 7 51 7 19 6 92 6 53 6 27 6 07 5 88 32ºC D 23ºC W Input kW 2 17 2 48 2 79 3 11 3 42 3 73 4 04 Heating OUTDOOR CONDITIONS Indoor Conditions 24ºC D 18ºC W 12ºC D 11ºC W 7ºC D 6ºC W 4ºC D 3ºC W 0ºC D 1ºC W 5ºC D 6ºC W 7ºC D 8ºC W 15ºC D 16ºC W Capacity kW 13 80 11 04 9 20 8 28 7 82 6 90 6 44 5 98 15ºC Input kW 4 83 3 86 3 22 3 06 2 90 2 74 2 58 2 25 ...

Page 25: ...y kW 12 17 11 64 11 21 10 58 10 16 9 84 9 52 Sensitive capacity kW 9 73 9 31 8 97 8 46 8 13 7 87 7 62 32ºC D 23ºC W Input kW 3 02 3 45 3 88 4 31 4 74 5 18 5 61 Indoor Conditions 24ºC D 18ºC W 12ºC D 11ºC W 7ºC D 6ºC W 4ºC D 3ºC W 0ºC D 1ºC W 5ºC D 6ºC W 7ºC D 8ºC W 15ºC D 16ºC W Capacity kW 16 22 12 97 10 81 9 73 9 19 8 11 7 57 7 03 15ºC Input kW 6 04 4 83 4 03 3 82 3 62 3 42 3 22 2 82 Capacity kW...

Page 26: ...12 80 12 08 11 59 11 23 10 87 Sensitive capacity kW 11 11 10 63 10 24 9 66 9 27 8 98 8 69 32ºC D 23ºC W Input kW 3 02 3 45 3 88 4 31 4 74 5 18 5 61 Heating OUTDOOR CONDITIONS Indoor Conditions 24ºC D 18ºC W 12ºC D 11ºC W 7ºC D 6ºC W 4ºC D 3ºC W 0ºC D 1ºC W 5ºC D 6ºC W 7ºC D 8ºC W 15ºC D 16ºC W Capacity kW 19 67 15 73 13 11 11 80 11 14 9 83 9 18 8 52 15ºC Input kW 6 38 5 11 4 26 4 04 3 83 3 62 3 40...

Page 27: ...71 17 07 16 10 15 46 14 97 14 49 Sensitive capacity kW 14 81 14 17 13 65 12 88 12 36 11 98 11 59 32ºC D 23ºC W Input kW 3 78 4 32 4 86 5 41 5 95 6 49 7 03 Heating OUTDOOR CONDITIONS Indoor Conditions 24ºC D 18ºC W 12ºC D 11ºC W 7ºC D 6ºC W 4ºC D 3ºC W 0ºC D 1ºC W 5ºC D 6ºC W 7ºC D 8ºC W 15ºC D 16ºC W Capacity kW 26 22 20 98 17 48 15 73 14 86 13 11 12 24 11 36 15ºC Input kW 8 45 6 76 5 64 5 35 5 07...

Page 28: ...y kW 22 48 21 51 20 72 19 55 18 77 18 18 17 60 Sensitive capacity kW 17 99 17 20 16 58 15 64 15 01 14 55 14 08 32ºC D 23ºC W Input kW 4 83 5 52 6 21 6 90 7 59 8 28 8 97 Indoor Conditions 24ºC D 18ºC W 12ºC D 11ºC W 7ºC D 6ºC W 4ºC D 3ºC W 0ºC D 1ºC W 5ºC D 6ºC W 7ºC D 8ºC W 15ºC D 16ºC W Capacity kW 34 50 27 60 23 00 20 70 19 55 17 25 16 10 14 95 15ºC Input kW 10 35 8 28 6 90 6 56 6 21 5 87 5 52 4...

Page 29: ...8 Air Velocity and Temperature Distributions Discharge angle 60 CEILING Airflow velocity Temperature ...

Page 30: ...Discharge angle 60 FLOOR Airflow velocity Temperature ...

Page 31: ...an motor Model Hz Voltage Power output FLA YOKC 12 50 220 240 25 0 13 YOKC 18 50 220 240 55 0 355 YOKC 24 50 220 240 55 0 355 YOKC 30 50 220 240 80 0 475 YOKC 36 50 380 80 0 475 YOKC 48 50 380 59 0 34 YOKC 60 50 380 59 0 34 Symbols FLA Full Load Amps ...

Page 32: ...00btu h 18000btu h Octave band center frequency H z Sound pressure level dB 0 dB 0 0002 Ì bar Audibility limits of continuous white sound Octave band center frequency H z Sound pressure level dB 0 dB 0 0002 Ì bar Audibility limits of continuous white sound Ceiling Floor ...

Page 33: ...dB 0 0002 Ì bar Octave band center frequency H z Audibility limits of continuous white sound Ceiling Floor 48000btu h 60000btu h Octave band center frequency H z Sound pressure level dB 0 dB 0 0002 Ì bar Audibility limits of continuous white sound Octave band center frequency H z Sound pressure level dB 0 dB 0 0002 Ì bar Audibility limits of continuous white sound Ceiling Floor ...

Page 34: ...tor 1 28 right installation board 1 4 Cover for E box 1 29 right clapboard 1 5 Panel Ass y 1 30 middle beam 1 6 Display panel box 1 31 grille lock 1 7 Display PCB assy 1 32 fan motor 1 8 Manual button 1 33 grille strip 2 9 Sealing foam I for air out frame 1 34 grille strip screw 2 10 Sealing foam II for air out frame 2 35 Sroll shell down 2 11 Sealing foam III for air out frame 1 36 Sroll shell up...

Page 35: ...y 1 33 grille strip 2 6 Display panel box 1 34 grille strip screw 2 7 Display board ass y 1 35 Sroll shell down 3 8 Manual button 1 36 Sroll shell up 3 9 Sealing foam I for air out frame 1 37 fan 3 10 Sealing foam II for air out frame 3 38 left fixing clamp for motor 1 11 Sealing foam III for air out frame 1 39 right fixing clamp for motor 1 12 Air out frame assy 1 40 Strenghten board for motor 1 ...

Page 36: ...r 1 9 fan 2 25 6 Main control PCB 1 10 fan motor 2 25 7 Fan motor capacitor 2 11 fan motor holder 2 25 8 Electric part box 1 12 right holder filter 2 26 Cover for E box 1 13 left holder filter 2 27 Collect water pan ass y 1 14 middle beam 1 28 cover 1 15 pipe fixed board 1 29 Display board ass y 1 16 Sealing foam for collect pan 2 30 Display panel box 1 17 Installation clamp 2 31 Sealing foam I fo...

Page 37: ...Part 3 Outdoor Units Outdoor Units ...

Page 38: ...Outdoor Units 1 Dimensions 2 Service Space 3 Wiring Diagrams 4 Field Wiring 4 Electric Characteristics 6 Operation Limits 7 Sound Levels 8 Exploded view 9 Troubleshooting ...

Page 39: ...1 Dimensions 1 1 YOJC 12 290 315 285 530 62 590 750 110 1 2 YOJC 18 12 5 ...

Page 40: ...1 3 YOJC 24 330 62 895 860 590 141 1 4 YOJC 30 YOJC 36 ...

Page 41: ...1 5 YOJC 48 YOJC 60 ...

Page 42: ...vice Space Capacity 60000Btu 30cm 60cm 30cm 200cm Wall or obstacle Air inlet Air outlet Air inlet Maintain channel 60cm Obstacle Fix with bolt Deep foundation Necessary width 600mm M10 bolt 4pieces per unit ...

Page 43: ...3 Wiring diagrams 3 1 Cooling Heating 3 1 1 YOJC 12 3 1 2 YOJC 18 ...

Page 44: ... E I N D O O R U N I T I S T1 T2 D L SER I ES PLEASE PU T TH E LI N ES O N XT3 TOI N D O O RU N I T XT1 S C O R R ELATI VE PAR T 1 2 4 5 R E S S TA R T IN GC A P A C I T O R S TA R T IN GR E LA Y D I S C H A R G E R E S IS T A N C E R E S L 3 1 2 N ...

Page 45: ...Y G RT5 RT3 RT1 C N C N CN C N C N C N 201 100 200 C O M P R E S S O R FA N 3 FA N 4 O U TD O O RFA N C A P 3 C A P 4 FA NC A P S V 4 W A Y V A LU E K M 1 A CC O N TA C TO R H E A T C R A N K H P R O H I G HP R E S S U R ES W I TH R T3 P I P E TE M P S E N S O R X S 8 9 C O N N E C TO R S X P 8 9 C O N N E C TO R S C N 100 208 P C B O A R DS O C K E TS K 1 TE M P P R O TE C T S W I TH R O O MTE M ...

Page 46: ...4 Field Wiring ...

Page 47: ... YOJC 12 50 220 240 26 5 3 24 0 27 YOJC 18 50 220 240 36 8 8 75 53 0 61 YOJC 24 50 220 240 61 11 4 53 0 66 YOJC 30 50 220 240 97 17 65 250 1 38 YOJC 36 50 380 61 6 58 250 1 38 YOJC 48 50 380 66 8 22 65 0 7 YOJC 60 50 380 67 9 77 65 0 7 Symbols MSC Max Starting Current RLA Rated Locked Current FLA Full Load Amps ...

Page 48: ...tion Limits Ensure the operating temperature is in allowable range 6 7 24 17 24 30 STD 24 STD 30 45 35 17 7 17 With low ambient temp cooling module Cooling Heating Indoor temp ºC Indoor temp ºC Ambient temp ºC ...

Page 49: ...7 Sound levels 1m Microphone 12000btu h 18000btu h ...

Page 50: ...24000btu h 3000btu h 36000btu h 48000btu h 60000btu h ...

Page 51: ... motor 1 18 Separating board 1 6 Holder for fan motor 1 19 Condenser 1 7 Chassis 1 20 Water collector 1 8 Compressor 1 21 Right clapboard 1 9 Installation plate for valves 1 22 Big handle 1 10 Gas pipe valve 1 23 Cover 1 4 way valve 1 24 Small handle 1 11 Liquid pipe valve 1 25 Rear net 1 12 Fan motor capacitor 1 26 Copper nut TLM C03 1 13 Installation board for E parts 1 27 Copper nut TLM A01 1 1...

Page 52: ... capacitor 1 7 Foam over holder for motor 1 25 Capacitor clamp 1 8 Cover 1 26 Chassis 1 9 Little handle 1 27 Front right clapboard 1 10 Condenser 1 28 Compressor 1 11 Support board for motor holder 1 29 Liquid valve assy 1 12 Left clapboard 1 30 Liquid pipe valve 1 13 Rear net 1 31 4 Ways valve assy 1 14 Rear right clapboard 1 Gas pipe valve 1 15 Big handle 1 32 Four way Valve 1 16 Installation pl...

Page 53: ... Outlet Pipe for Condenser 1 26 4 way Valve Solenoid 1 10 Rear Net 1 27 Liquid pipe valve 1 11 Support board Back side 1 28 Capillary pipe 1 12 Handle 2 29 Gas pipe valve 1 13 Separating board 1 30 refrigerant Container 1 14 Base Pan Ass y 1 31 Pipe temp sensor assy 1 15 Cabinet Front Right 1 32 Support board Left Side 1 16 Capacitor Clamp 1 33 Big handle 1 17 Capacitor Compressor 1 34 Filter 1 Wi...

Page 54: ...er for wire joint 1 8 Separating board 1 27 Wire clamp 1 9 Cover 1 28 Wire joint for power 1 Condenser I 1 29 Liquid valve assy 1 10 Condenser II 1 30 Liquid valve 1 11 Support board for motor holder 1 31 4 way valve assy 1 12 Left supporting bar 1 32 4 way Valve 1 13 Rear net 1 33 Gas valve 1 14 Rear right clapboard 1 34 Compressor 1 15 Big handle 1 35 Discharge temp sensor 1 16 Installation plat...

Page 55: ... 26 Washer for wire joint 1 8 Separating board 1 27 Wire clamp 1 9 Cover 1 28 Wire joint for power 1 Condenser I 1 29 Liquid valve assy 1 10 Condenser II 1 30 Liquid valve 1 11 Support board for motor holder 1 31 4 way valve assy 1 12 Left supporting bar 1 32 4 way valve 1 13 Rear net 1 33 Gas valve 1 14 Rear right clapboard 1 34 Compressor 1 15 Big handle 1 35 Discharge temp sensor 1 16 Installat...

Page 56: ...Ass y 1 23 Wire joint for power 1 Condensator I 1 24 Compressor 1 8 Condensator II 1 25 Refrigerator Container 1 9 Left Side Cabinet 1 26 Fixture Segregator 1 10 Supporter Rear Cabinet 1 Four way Valve 1 10 Supporter Rear Cabinet 1 27 Four way Valve Solenoid 1 11 Cabinet Back side 1 28 Low Pressure Valve 1 12 Handle 2 29 Capillary Tube Ass y 1 13 Plate Sound proof 1 30 Electric heat belt for comp ...

Page 57: ...ap Ass y 1 23 Wire joint for power 1 Condensator I 1 24 Compressor 1 8 Condensator II 1 25 Refrigerator Container 1 9 Left Side Cabinet 1 26 Fixture Segregator 1 10 Supporter Rear Cabinet 1 4 way Valve 1 10 Supporter Rear Cabinet 1 27 4 way Valve Solenoid 1 11 Cabinet Back side 1 28 Low Pressure Valve 1 12 Handle 2 29 Capillary Tube Ass y 1 13 Plate Sound proof 1 30 Electric heat belt for comp 1 1...

Page 58: ...No Extinguish Flash at 5Hz 9 2 LEDs for the indication of outdoor trouble YOJC 36 YOJC 48 YOJC 60 Type Contents LED1 LED2 LED3 Protection Phase sequence Flash Off Off Protection Overload of current Off Off Flash Protection Lack of phase Flash Off Off Protection Protection of pressure Flash Flash Off Protection Open circuit and short circuit trouble of T3 Off Flash Flash Protection Open circuit and...

Page 59: ...d of current Overload of current Check the current normally The max current for YOHC 36 is 9 4A The max current for YOHC 48 is 10 9A The max current for YOHC 60 is 13 2A Is the current in rated range The outdoor PCB is defective Yes Possible reason 1 Outdoor fan is defective 2 The compressor is defective 3 Refrigerant is over charged 4 Air enter the refrigerant system 5 Heat exchanger is too dirty...

Page 60: ...9 2 3 Lack of phase Lack of phase Check the power supply is it 3 phase Check the connection between power supply and terminal Outdoor PCB is defective Yes Yes ...

Page 61: ...efrigerant 3 Heat exchanger is dirty 4 Outdoor fan or fan blade is defective 5 Outdoor unit is bad ventilation 6 Refrigerant is leakage Yes Yes Is pressure protective switch K2 Yes Possible reason 1 The wires is loose to K 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 two much 2 ...

Page 62: ...t the resistance is normal Indoor PCB is defective Replace the sensor Yes No Repair connector No Yes 9 2 6 Open circuit and short circuit trouble of T4 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 Indoor PCB is defective Replace the sensor Yes No ...

Page 63: ...enser Check the resistance of the temp sensor according to Annex 1 is it normal No Yes 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 Replace the sensor ...

Page 64: ...ons Power failure Wait for the comeback of power Power switch is open Switch on the power Fuse of power switch may have blown Replace the fuse Batteries of remote controller are exhausted Replace the batteries Unit does not start The time is not start up time you have set Wait or cancel the time set Temperature is not set correctly Set the temperature properly Door or window is open Close door and...

Page 65: ...n FAN ONLY mode The Display Goes Off Symptom Checking items Cause The indication on the display disappears after a lapse of time Check whether the timer operation has come to an end when the OFF TIMER is indicated on the display The air conditioner operation stops since the set time elapsed The ON TIMER indicators go off after a lapse of certain time Check whether the timer operation is started wh...

Page 66: ...Part 4 Installation Installation ...

Page 67: ...rities 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 refrigerant pipe with the indoor unit and the outdoor unit Then fasten the nuts at the repair points 1 2 Locate The Pipe a Drill a hole in the wall suitable just for the size of the wall conduit then set on the fittings suc...

Page 68: ...n 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 the pipe At this time it ...

Page 69: ...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 achieved in 2h repeat procedure and Vacuum placing test 1h Sketch map of special vacuum dry procedure This vacuum dry method is used in the following cond...

Page 70: ...should be short When the pipe is too long a prop stand must be installed to keep the gradient of 1 100 and prevent bending Refer to the following table for the specification of the prop stand Diameter Distance between the prop stands Hard PVC pipe 25 40mm 1 5 2m 4 1 3 Precautions The diameter of drainpipe should meet the drainage requirement at least The drainpipe should be heat insulated to preve...

Page 71: ...n drainpipe trap 4 2 2 Every indoor unit needs one drainpipe trap 4 2 3 A plug should be designed to do cleaning P l ug 50cm 50cm 4 3 Upwards drainage drain pump 4 3 1 To ensure the gradient 1 100 the drainpipe can be lifted to 340mm After upwards place downwards or it will cause malfunction to drain pump ...

Page 72: ...er Number of connecting indoor units Calculate drainage volume Select the diameter Calculate allowed volume Total cooling capacity of indoor units HP 2 l hr Allowed volume lean 1 100 l hr I D mm Thick Hard 14 Ø 25 3 0 Hard 14 88 Ø 30 3 5 Hard 88 334 Ø 40 4 0 Hard 175 334 Ø 50 4 5 Hard 334 Ø 80 6 0 4 5 Drainage test Drainage without drain pump After finishing drainpipe installation pour some water ...

Page 73: ... 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 5 2 1 Work Procedure Before laying the pipes the non jointing parts and non connection parts should be heat insulated When the gas proof test is e...

Page 74: ... pipes 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 The connection part should be insulated or else water will be condensing at the non insulation part 5 4 Note 5 4 1 The jointing area expanding area and the flange area should be heat insulated after passing the pressure test 5 4 2 T...

Page 75: ...www johnsoncontrols com SM YOHC 12 60GB 03 07 ...

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