York YUHC 18 Service Manual
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York YUHC 18 Service Manual

York YUHC 18 Service Manual

Yuhc 18 to 60
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Blower
YUHC 18 to 60
SERVICE MANUAL
YUHC 18 · YUHC 24 · YUHC 36
YUHC 36 · YUHC 48 · YUHC 60
SM-YUHC-18-60GB 03-07

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Summary of Contents for York YUHC 18

  • Page 1 Blower YUHC 18 to 60 SERVICE MANUAL YUHC 18 · YUHC 24 · YUHC 36 YUHC 36 · YUHC 48 · YUHC 60 SM-YUHC-18-60GB 03-07...

  • Page 2: Model:

    A = First H = High wall R = New remote M = Master range P = Portable Y = YORK Voltages: R = Everest front A = (Out) 220-240/1/50 - (In) 220-240/1/50 C = (Out) 380/3/50 - (In) 220-240/1/50...

  • Page 3: Yuhc

    Duct Type Part1. Product features 1. Economic and convenient installation ---Several diffusers branch off from an indoor unit, adjusting the room temperature, which makes many rooms to be air conditioned with only one indoor unit ---All models feature thin design making them applicable to ceiling pocket that tends to be shallow 2) A wild variety of optional accessories ---Including front clapboard, panel, canvas air passage, filter, etc.

  • Page 4: Indoor Fan

    Part2. Specification Model YUHC-18 YUHC-24 YUHC-30 Power supply Ph-V-Hz 1,220-240V,50Hz 1,220-240V,50Hz 3,380V,50Hz 18,000 24,000 30000 Capacity Btu/h Capacity Cooling Input 1900 2560 3250 12.2 Rated current Btu/w.h Capacity Btu/h 20,500 27,300 32000 Capacity Heating Input 1900 2500 3250 Rated current Btu/w.h Moisture Removal Max.

  • Page 5: Outdoor Fan

    1000×300×800 1000×300×800 1350×300×800 Dimension (W*H*D) 1205×370×940 1205×370×940 1555×370×940 Indoor unit Packing (W*H*D) 36/43 38/45 48/57 Net/Gross weight YDK53-6K YDK53-6H YDK250-6D-WL Model WELING WELLING WELLING Brand Outdoor fan Input motor Capacitor Speed r/min Number of rows 25.4×22 25.4×22 25.4×22 Tube pitch(a)x row pitch(b) Fin spacing Hydrophilic aluminium Hydrophilic aluminium...

  • Page 6: Model:

    Model YUHC-36 YUHC-48 YUHC-60 Power supply Ph-V-Hz 3,380V,50Hz 3,380V,50Hz 3,380V,50Hz Capacity Btu/h 36,000 48,000 60,000 10.5 14.0 16.0 Capacity Cooling Input 3700 4700 6000 Rated current 10.2 Btu/w.h Capacity Btu/h 39,000 52,000 68,000 Capacity 15.2 20,000 Heating 3350 4900 6000 Input Rated current Btu/w.h...

  • Page 7: Model:

    1350×300×800 1350×300×800 1350×320×800 Dimension (W*H*D) 1555×370×940 1555×370×940 1555×440×940 Indoor unit Packing (W*H*D) 48/57 50/59 70/80 Net/Gross weight YDK250-6D-WL YDK65-6WL; YDK65-6F YDK65-6WL; YDK65-6F Model WEILING WELLING WELLING Brand Outdoor fan 138+156 138+156 Input motor 3.5×2 3.5×2 Capacitor Speed r/min Number of rows 25.4×22 25.4×22 25.4×22...
  • Page 8 Part3. Noise level CONCEALED DUCT TYPE Duct 1.0m Microphone 18,000~24,000 btu/h 30,000~36,000 btu/h Audibility limits of Audibility limits of continuous white continuous white sound sound Octave band center frequency £ ¨ H z £ © Octave band center frequency £ ¨ H z £ © 48,000 btu/h 60,000btu/h Audibility limits of...
  • Page 9 Part4. Operation range Ensure the operating temperature is in allowable range. Heating Cooling Indoor temp. (ºC) Indoor temp. (ºC)
  • Page 10 Part5. Capacity table Model: YUHC-18 COOLING OUTDOOR CONDITIONS Indoor 21ºC 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions 5.12 4.90 4.72 4.45 4.27 4.14 4.01 Total capacity kW 21ºC D 4.10 3.92 3.78 3.56 3.42 3.31 3.21 Sensitive capacity kW 15ºC W 1.20 1.37 1.54...
  • Page 11 Model: YUHC-24 COOLING OUTDOOR CONDITIONS Indoor 21ºC 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions 6.86 6.56 6.32 5.96 5.73 5.55 5.37 Total capacity kW 21ºC D 5.49 5.25 5.06 4.77 4.58 4.44 4.29 Sensitive capacity kW 15ºC W 1.61 1.84 2.07 2.30 2.53...
  • Page 12 Model: YUHC-30 COOLING OUTDOOR CONDITIONS Indoor 21ºC 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions 8.50 8.13 7.84 7.39 7.10 6.87 6.65 Total capacity kW 21ºC D 6.80 6.50 6.27 5.91 5.68 5.50 5.32 Sensitive capacity kW 15ºC W 2.02 2.30 2.59 2.88 3.17...
  • Page 13 Model: YUHC-36 COOLING OUTDOOR CONDITIONS Indoor 21ºC 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions 10.14 9.70 9.35 8.82 8.47 8.20 7.94 Total capacity kW 21ºC D 8.11 7.76 7.48 7.06 6.77 6.56 6.35 Sensitive capacity kW 15ºC W 2.33 2.66 3.00 3.33 3.66...
  • Page 14 Model: YUHC-48 COOLING OUTDOOR CONDITIONS Indoor 21ºC 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions 13.52 12.94 12.47 11.76 11.29 10.94 10.58 Total capacity kW 21ºC D 10.82 10.35 9.97 9.41 9.03 8.75 8.47 Sensitive capacity kW 15ºC W 2.96 3.38 3.81 4.23 4.65...
  • Page 15 Model: YUHC-60 COOLING OUTDOOR CONDITIONS Indoor 21ºC 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions 15.46 14.78 14.25 13.44 12.90 12.50 12.10 Total capacity kW 21ºC D 12.36 11.83 11.40 10.75 10.32 10.00 9.68 Sensitive capacity kW 15ºC W 3.78 4.32 4.86 5.40 5.94...
  • Page 16 Part 7. External Static Pressure of the Indoor Fan H igh speed H ig h sp e e d Low speed L o w sp e e d 1000 1100 1200 1 0 0 0 1 1 0 0 1 2 0 0 1 3 0 0 1 4 0 0 1 5 0 0...
  • Page 17 Part 7. Electric control functions 1. Performance Index Item Index Applicable Voltage Range 165-253V~, 343-418V~ A/C Frequency 50Hz Working environment temperature -7°C- +45°C 2. Main Parts Introduction 2.1 Indoor Fan High speed and low speed. Breeze speed for anti-cold air. 2.2 Outdoor Fan High speed and low speed.

  • Page 18: Indicator

    3. Operation Modes and Functions 3.1 Manual Operation 3.1.1 The manual operation mode is controlled through “manual” pad in the wind in-take grid, including such two modes as manual action and manual cooling. Push the manual pad for each switchover, the order for which is shown below: REMOTE CONTROL MANUAL ACTION...

  • Page 19: Four-Way Valve

    3.2 Heating Mode 3.2.1 Four-way valve opens at once, while defrosting process closes. 3.2.2 Condition for the compressor action: (Ts = set temperature, Ta = room temperature) Condition Compressor Outdoor fan Room temp. up > Ts+4 <Ts+4 Room temp. down <...
  • Page 20 3.3. Defrost (only available to heating mode) 3.3.1 The defrosting of 2~3HP is processed by indoor control board. 3.3.1.1 Defrosting Conditions 3.3.1.1.1 Low temperature defrosting condition: Accumulated operating time when temperature of outdoor heat exchanger coil T3 is below -2°C reaches up to over 40 minutes.
  • Page 21 3.4 Cooling Mode 3.4.1 Four-way valve is closed. If four-way valve is open before the machine enters cooling mode, then four-way valve will be closed at the first time the compressor starts under the cooling mode. Conditions for the compressor and outdoor fan action (Ts = set temperature, Ta=room temperature) Condition Compressor Outdoor fan...
  • Page 22 4. Other Functions 4.1 LED Display Operation lamp, timer lamp, defrosting/pre-heating lamp, and water level alarm lamp. 4.1.1 Operation Lamp When the operation is recovering, it will blink at 1 Hz. After the air-conditioner is on, the lamp will keep on. After the air-conditioner is off, the lamp will be off.

  • Page 23: Trouble Shooting

    5. Trouble Shooting 5.1 Protective Function 5.1.1 3-minute delay for the compressor start-up. At the beginning of energizing or after the stop of the compressor, 3-minute delay will be needed to start the compressor. When switchover between cooling/heating mode, the compressor stops automatically. 5.1.2 Compressor current overload protection 5.1.2.1 3HP compressor current examination and action...
  • Page 24 5.1.4 Evaporator Protection against low temperature(cooling mode) 5.1.4.1 When the evaporator pipe temperature ≤ 3°c and this lasts for 3 minutes, the compressor and outdoor fan will be shut off. 5.1.4.2 When the evaporator pipe temperature ≥ 7°c, it recovers. 5.1.4.3 The restart of the compressor shall execute the delay protection.
  • Page 25 5.2 Self-diagnosis 5.2.1 Indoor unit Type Contents LED Flashing Remark protection Over current protection of the compressor Lamps of operation, timer, Whole unit is shut down. occurs 4 times in 1h defrosting (only It cannot recover unless flashing simultaneously at power is cut off 5Hz.
  • Page 26 Part 9. Wiring diagram 1. YUHC-18 Indoor unit: Outdoor unit:...
  • Page 27 2. YUHC-24 Indoor unit: Outdoor unit:...
  • Page 28 3. YUHC-30 YUHC-36 Indoor unit: Outdoor unit:...
  • Page 29 4. YUHC-48 Indoor unit: Outdoor unit: H - PR O K1 C O M P FAN 3 FAN 4 C N 201 CN 200 C N 100 C AP3 C AP4 S. V. KM 1 KM 1 H EAT S. V. XT5- 7 FAN 3 H - PR O...
  • Page 30 5. YUHC-60 Indoor unit: Outdoor unit:...
  • Page 31 Part 10. Outlines and Dimension Indoor units 1. YUKC-18 YUKC-24 2. YUKC-30 YUKC-36 YUKC-48...
  • Page 32 3. YUKC-60 Outdoor units 1. YUJC-18...
  • Page 33 2. YUJC-24 1013 COMP 3. YUJC-30 YUJC-36 1071.4 181.4 COMP 4. YUJC-48 YUJC-60 COMP...
  • Page 34 Part 11. Installation 1. Installation place The indoor unit must be installed such that there is no short circuit of the cool discharge. Comply to the installation clearance recommended. Don’t put the indoor unit where there is direct sunlight on unit. Make sure the location is suitable for piping and drainage.
  • Page 35 (2) YUKC-60 The positioning of ceiling hole and indoor unit and hanging screw bolt: Air outlet Hanging Screw bolt Main body : A 4-M10 Site configuration Ceiling hole: D Panel: E Install the main body: Capacity (Btu/h) 60,000 1350 1400 1380 1400 1430 19 12.7 930 310 When using a back-air installation, please refer to the following:...
  • Page 36 2. Refrigerant pipe connecting (1) Piping sizes Model (Btu/h) Liquid (mm/inch) Gas (mm/inch) 18,000 6.35(1/4) 12.7(1/2) 24,000 9.53(3/8) 16.0(5/8) 30,000~60,000. 12.7(1/2) 19.0(3/4) (2) Piping connection 1). Measure the necessary length of the connecting pipe, and make it by the following way. a.
  • Page 37 (4) Additional charge When the length of the one-way pipe is less than 5m, additional refrigerant charge after vacuuming is not necessary. When the length of one-way pipe is over 5m, the quantity to be added is as follows (unit in gram): Connective pipe length Air purging method Additional amount of refrigerant to be charged...
  • Page 38 Part 12. Servicing and maintenance 1. Troubles and Solutions If any the following abnormal conditions occur, turn off the power supply immediately. Please contact our dealer. TROUBLES Indicator lamps flash rapidly, after your disconnecting and connecting the unit, the situation is the same. Fuse or circuit breaker work frequently.
  • Page 39 2. Troubles and solutions concerning the remote controller Please make the following check before asking for repair or maintenance. Trouble Cause Solutions CAN NOT CHANGE THE Check if the mode display on the The lndoor Unit will select fan speed FAN SPEED SETTING LCD is AUTO automatically when AUTO mode is...
  • Page 40 3. Clean CAUTION: Please turn off your air conditioner and disconnect power supply before cleaning. (1) CLEANING INDOOR UNIT Use a dry to wipe the indoor unit. A cloth dampened with cold water may be used if the indoor unit is too dirty. It is allowed to remove the front panel of indoor unit and clean it with water, and ensure to wipe it up with a dry rag.
  • Page 41 Part 13. Exploded view Indoor units 1. YUKC-18 Part Name Quantity Part Name Quantity Front Side, Ass'y 12.2 Terminal Block, 7P Evaporator 12.3 Transformer Input pipe 12.4 Main control board Output pipe Right up fixing clamp for motor Evaporator temp sensor Air filter, Ass'y Left up fixing clamp for motor Base board for evaporator...
  • Page 42 2. YUKC-24 Part Name Quantity Part Name Quantity Front Side, Ass'y 12.2 Terminal Block, 7P Evaporator 12.3 Transformer Input pipe 12.4 Main control board Output pipe Right up fixing clamp for motor Evaporator temp sensor Air filter, Ass'y Left up fixing clamp for motor Base board for evaporator Middle beam Axis joint...
  • Page 43 3. YUKC-30 YUKC-36 YUKC-48 Part Name Quantity Part Name Quantity 1 Front Side 15 Electric control assy 2 Evaporator 15.1 Electric control box Input pipe 15.2 wire joint,7p Output pipe 15.3 Transformer 3 Evaporator temp sensor 15.4 Main control board 4 Left separating board, evaporator 16 Right up fixing clamp for motor 5 Right separating board, evaporator...
  • Page 44 4. YUKC-60 Part Name Quantity Part Name Quantity Air-out frame assy Electric control assy Air-out board assy 21.1 Electric part box Evaporator 21.2 wire joint Input pipe 21.3 Transformer Output pipe 21.4 Main control board Evaporator temp sensor Right up fixing clamp for motor Panel assy Right down fixing clamp for motor Air filter...
  • Page 45 Outdoor units 1. YUJC-18 Part Name Quantity Part Name Quantity Clamp for front net Wire joint Front net Separating board Front clapboard Installation board for E-parts Propeller fan Washer for wire joint Fan motor Clamp for wiring Holder for fan motor Compressor capacitor Foam over holder for motor Capacitor clamp...
  • Page 46 2. YUJC-24 Part Name Quantity Part Name Quantity Clamp for front net Wiring Installation Panel Front net Contactor,AC Front clapboard Terminal Block,5p Propeller fan Washer for wire joint Fan motor Wire Clamp Holder for fan motor Running Capacitor, Compressor Foam over holder for motor Capacitor Clamp Cover Base Pan Ass'y...
  • Page 47 3. YUJC-30 YUJC-36 Part Name Quantity Part Name Quantity Front net AC Contactor Clamp for front net Running Capacitor, Compressor Front clapboard Fan motor capacitor Propeller fan Wire joint, 3p Fan Motor Washer for wire joint Holder for fan motor Wire joint, 5p Top Cover Installation board for E-parts...
  • Page 48 4. YUJC-48 YUJC-60 Part Name Quantity Part Name Quantity Guard fan E-control box, ass’y Cabinet, Front Capacitor, Fan Motor Fan, Propeller Terminal Block,2p Fan motor, Down Contactor, AC Fan Motor Low Pressure Valve ,3/8 in. Mount, Fan Motor PCB Ass'y Top cap Ass'y Terminal Block,4p Condenser, Up...
  • Page 49 www.johnsoncontrols.com SM-YUHC-18-60GB 03-07...

This manual is also suitable for:

Yuhc 24Yuhc 36Yuhc 48Yuhc 60

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