York YKHC 18 Service Manual Download Page 1

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Cassette

YKHC 18 to 48

SERVICE MANUAL

YKHC 18 · YKHC 24 · YKHC 30 · YKHC 36 · YKHC 48

SM-YKHC-18-48GB 03-07

Summary of Contents for YKHC 18

Page 1: ...Cassette YKHC 18 to 48 SERVICE MANUAL YKHC 18 YKHC 24 YKHC 30 YKHC 36 YKHC 48 SM YKHC 18 48GB 03 07...

Page 2: ...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...

Page 3: ...r way airflow 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 3 D...

Page 4: ...TOSHIBA Guangdong SANYO Dalian h u t B y t i c a p a C 24574 18362 W t u p n I 2440 1855 A A L R t n e r r u c d e t a R 11 4 8 6 Locked rotor Amp LRA A 85 80 Thermal protector INNER INNER F u r o t...

Page 5: ...a r o o d t u O 3 h 2400 3000 Outdoor noise level dB A 48 55 Dimension W H D mm 845 695 335 895 860 330 Packing W H D mm 965 847 395 1000 985 410 Outdoor unit Net Gross weight kg 55 58 79 90 Refrigera...

Page 6: ...Capacity Btu h 33500 33500 48123 Input W 3650 3650 4750 Rated current RLA A 6 58 6 58 8 22 Locked rotor Amp LRA A 65 65 82 Thermal protector INNER INNER INNER Capacitor uF Compressor Refrigerant oil...

Page 7: ...44 Outdoor coil Number of circuits 8 8 4 Outdoor air flow m 3 h 8 5000 5000 Outdoor noise level dB A 5000 57 58 Dimension W H D mm 57 990 960 360 940 1245 360 Packing W H D mm 990 960 360 1120 1090 4...

Page 8: ...m 12 000 24 000 btu h 30 000 48 000 btu h Octave band center frequency Hz Sound pressure level dB 0dB 0 0002 bar Audibility limits of continuous white sound Octave band center frequency Hz Sound press...

Page 9: ...ischarge angle 60 Airflow velocity Temperature Part5 Operation range Ensure the operating temperature is in allowable range Ambient emp C Heating STD 30 24 17 17 7 6 Indoor temp C Indoor temp C 17 7 1...

Page 10: ...01 6 70 6 46 6 10 5 85 5 67 5 49 Sensitive capacity kW 5 61 5 36 5 17 4 88 4 68 4 53 4 39 32 C D 23 C W Input kW 1 53 1 75 1 97 2 19 2 40 2 62 2 84 Model YKHC 12 18 HEATING OUTDOOR CONDITIONS Indoor...

Page 11: ...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 32 C D 23 C W Input kW 2 06 2 36 2 65 2 94 3 24 3 53 3 83 Model YKHC 24 HEATING OUTDOOR CONDITIONS Indoor Conditions 24 C D...

Page 12: ...0 12 9 72 9 41 9 11 Sensitive capacity kW 9 31 8 91 8 58 8 10 7 77 7 53 7 29 32 C D 23 C W Input kW 2 62 2 99 3 36 3 74 4 11 4 49 4 86 Model YKHC 30 HEATING OUTDOOR CONDITIONS Indoor Conditions 24 C D...

Page 13: ...8 11 59 11 23 10 87 Sensitive capacity kW 11 11 10 63 10 24 9 66 9 27 8 98 8 69 32 C D 23 C W Input kW 2 98 3 40 3 83 4 26 4 68 5 11 5 53 Model YKHC 36 HEATING OUTDOOR CONDITIONS Indoor Conditions 24...

Page 14: ...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 32 C D 23 C W Input kW 3 78 4 32 4 86 5 41 5 95 6 49 7 03 Model YKHC 48 HEATING OUTDOOR CONDITIONS Indoor Condit...

Page 15: ...port in the main chip outputs high level 2 3 2 It will buzz once when the main frame receives remote start up signal 2 3 3 It will buzz once for 1 second when receiving turn off signal 2 3 4 It will...

Page 16: ...nd and the indicator is illuminated 3 1 2 4 Under this mode the corresponding protections are in effective 3 minute delayed start up over current outdoor protection and evaporator low temperature prot...

Page 17: ...Switchover between fan speed and fine tune can be set according to temperature of evaporator pipe Condition T Indoor exchanger temp Indoor fan speed T 25 C Off 25 C T 32 C Breeze Indoor exchanger temp...

Page 18: ...3 1 4 3 Indoor fan acts according to anti cold air function 3 3 1 4 4 Defrosting pre heating lamp continues to be on until indoor fan starts up 3 3 2 The defrosting of 3 5 5HP 3N is processed by outd...

Page 19: ...uto mode the heating fan only or cooling operation will be automatically chosen according to the room temperature Ta and the set temperature Ts 3 6 2 1 When Ta Ts 1 c it performs the heating operation...

Page 20: ...swing angle is between 15 and 15 with 15 being its center 4 4 Condensate Pump 4 4 1 The action of the water pump is controlled by water level switch 4 4 2 Control procedures check water level every 5...

Page 21: ...compressor will be 3 minutes delayed to shut down for protection c When there are 4 times compressor protection within one hour the A C will be shut down meanwhile the operation light and timer light...

Page 22: ...recovers 5 1 4 3 The restart of the compressor shall execute the delay protection 5 1 5 Anti cold air protection Only available to heating mode including heating mode heating operation under auto mode...

Page 23: ...lamp flashing at 5Hz 5 error Condenser sensor checking channel is abnormal Defrosting lamp flashing at 5Hz 6 error Temperature fuse is melt reserved Operation lamp and timer lamp flashing at 5Hz Recov...

Page 24: ...22 Part8 Wiring diagram 1 YKHC 12 18 Indoor unit Outdoor unit...

Page 25: ...23 2 YKHC 24 Indoor unit Outdoor unit XT1 XT2 RT3 XS1 XP1 KM1 CAP1 FAN COMP CAP2 XT3 VALVE...

Page 26: ...utdoor unit S V XT3 XT4 2 1 3 S V XT7 XT6 N HEATER COMP CN100 208 XT3 T5 RT4 K1 RT3 XP8 9 H PRO T201 XT5 7 XT4 KM1 HEAT RT3 CN206 CN201 XT5 XP8 XS8 CN100 CN208 CN200 KM1 CN203 T201 COMP XS8 9 FAN3 CAP...

Page 27: ...S V XT1 XT2 2 1 3 S V XT7 XT6 N HEATER COMP CN100 208 XT1 T5 RT4 K1 RT3 XP8 9 H PRO T201 XT5 7 XT2 KM1 HEAT RT3 CN206 CN201 XT5 XP8 XS8 CN100 CN208 CN200 KM1 CN203 COMP XS8 9 FAN3 CAP3 FAN3 FAN4 CAP3...

Page 28: ...600 Ceiling hole 650 Panel 401 Hook location 611 Hook location 580 Body 422 28 5 600 Ceiling hole 650 Panel Drain side an Tubing side A 600 Hook 265 Panel Chart 4 Body Nut Ceiling 2 YKHC 24 Gas side...

Page 29: ...27 3 YKHC 30 YKHC 36 YKHC 48 Gas side liquid side Pump inspect hole 4 install hanger Drain hole E parts box 310 Outdoor units 1 YKJC 12 18 12 5...

Page 30: ...28 2 YKJC 24 1013 590 300 330 355 163 141 895 COMP 3 YKJC 30 YKJC 36 1071 4 624 336 4 360 396 4 181 4 181 990 COMP 4 YKJC 48 650 390 420 440 150 150 950 COMP...

Page 31: ...t easily Install the outdoor unit on a rigid base to prevent increasing noise level and vibration Determine the air outlet direction where the discharged air is not blocked In the case that the instal...

Page 32: ...he unnecessary part If the ceiling is extremely high please determine the length of the installation hook according to facts Cut the installation hook open in the middle position then use appropriate...

Page 33: ...cause of concrete shrinking b After installing the body please fasten the installation paper board onto the air conditioner with bolts M5X16 to determine in advance the sizes and positions of the hole...

Page 34: ...al and screw them up to the ceiling evenly e Regulate the panel in the direction of the arrow in Chart 11 3 slightly to fit the panel s center to the center of the ceiling s opening Guarantee that hoo...

Page 35: ...33 4 Relocate the air in grid in the procedure of reversed order install the air in grid...

Page 36: ...tion hooks from the height of ceiling then cut off the unnecessary part If the ceiling is extremely high please determine the length of the installation hook according to facts The length could be cal...

Page 37: ...Refer to chart 8 b Draw the grid up to an angle of about 45 and remove it Refer to chart 9 Grid switch Chart 8 45 Chart 9 Chart 10 2 Remove the installation covers at the four corners Wrench off the...

Page 38: ...esponding terminators on the body respectively 5 Relocate the air in grid in the procedure of reversed order 6 Relocate the installation cover a Fasten the rope of installation cover on the bolt of th...

Page 39: ...1 The device can be installed in ceiling cassette type indoor units several direction flow 2 When installing the device duct is needed on field and the rated diameter is 75mm 3 When metal duct pass t...

Page 40: ...38...

Page 41: ...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 wi...

Page 42: ...und wiring is connected correctly The length of the tubing and the added stow capacity of the refrigerant have been recorded The power voltage fits the rated voltage of the air conditioner There is no...

Page 43: ...y Set the temperature properly Door or window is open Close door and window Air filter is blocked with dust or dirtiness Clean the air filter Inlet outlet of indoor outdoor units are blocked Clear all...

Page 44: ...when the ON OFF button is pushed Check whether the signal transmitter of the remote controller is properly directed to the receiver of the indoor unit when the ON OFF button is pushed Direct the sign...

Page 45: ...43 Part12 Exploded view Indoor unit 1 YKHC 12 18...

Page 46: ...er pipe 1 Panel 1 11 Drain Pump Holder 1 26 11 26 12 Install cover swing motor 1 12 Pipe Temperature Sensor Ass y 1 26 13 Install cover I 1 13 Evaporator Ass y 1 26 14 Install cover II 1 14 Fixing cla...

Page 47: ...45 2 YKHC 24 YKHC 30 YKHC 36 YKHC 48 1 2 3 4 5 6 7 8 10 9 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56...

Page 48: ...k board Air out 1 1 15 Evaporator base assy 1 44 Back board Air out 2 1 16 Chassis 1 45 Back board Air out 3 1 16 Wire clamp board 1 46 Back board Air out 4 1 17 Sealing board pipe out 1 47 Foam air o...

Page 49: ...ssor 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 motor holder 1...

Page 50: ...7 Capacitor Clamp 1 8 Cover 1 28 Base Pan Ass y 1 9 Little handle 1 29 Cabinet Front Right 1 10 Condenser Ass y 1 30 Compressor 1 11 Support board motor holder 1 31 Rubber underlay compressor 3 12 Lef...

Page 51: ...nstallation board for E parts 1 7 Condenser I 1 25 Clamp for wiring 1 7 Condenser II 1 26 Terminal install board 1 8 Left clapboard 1 27 Refrigerant container 1 9 Rear Net 1 28 Fixing clamp container...

Page 52: ...alve 3 8 in 1 6 Mount Fan Motor 1 21 PCB Ass y 1 7 Top cap Ass y 1 22 Terminal Block 4p 1 8 Condenser Up 1 23 Wire joint for power 1 Condenser Down 1 24 Compressor 1 9 Left Side Cabinet 1 25 Refrigera...

Page 53: ...www johnsoncontrols com SM YKHC 18 48GB 03 07...

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