Johnson Controls YORK YH9FXC18BAH-FX Service Manual
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Johnson Controls YORK YH9FXC18BAH-FX Service Manual

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SERVICE MANUAL
Read this manual before installation and operation
Make sure that it is well kept for later reference
High Wall Fixed
R-410A 60Hz
YH9FXC18BAH--FX

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Summary of Contents for Johnson Controls YORK YH9FXC18BAH-FX

  • Page 1 SERVICE MANUAL High Wall Fixed R-410A 60Hz YH9FXC18BAH--FX Read this manual before installation and operation Make sure that it is well kept for later reference...

  • Page 2: Table Of Contents

    Contents Contents 1.Introduction..................... 1 2.Features ....................6 3.Specifications ..................7 4.Sensors list ..................... 8 5.Pinping diagrams ..................9 6.Printed Circuit Board Connector Wiring Diagram ........10 7.Functions and control ................13 8.System configuration ................26 9.Dimensional drawings ................33 10.Center of gravity ................. 33 11.Service Diagnosis ................

  • Page 3: Introduction

    Introduction 1. Introduction 1.1 Safety Cautions Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “Warning” and “Caution”. The “Warning” items are especially important since they can lead to death or serious injury if they are not followed closely. The “Caution” items can also lead to serious accidents under some conditions if they are not followed.
  • Page 4 Introduction Warning Do not repair the electrical components with wet hands . Working on the equipment with wet hands can cause an electrical shock Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock.
  • Page 5 Introduction Warning Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire. Be sure to use the specified cable to connect between the indoor and outdoor units.
  • Page 6 Introduction Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site, to prevent electrical shocks. Do not install the equipment in a place where there is a possibility of combustible gas leaks. If a combustible gas leaks and remains around the unit, it can cause a fire.
  • Page 7 Introduction Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.

  • Page 8: Features

    Features 2.Features 4 Fan setting :Select the fan speed LO,MED,HI,AUTO Anti-mold filter: Catches most small particles and remove unpleasant odors effectively. Sleep mode: The setting temperature and the indoor noise can be adjusted to a more comfortable level when you set the “sleep mode” during night sleep. 24Hour timer: Use the timer function to set on,or off,or from on to off,or from off to on Auto restart: Automatic return to previous operation conditions after sudden power blackout Easy clean design: The panel is easy to wash and the airflow vents can be detached easily...

  • Page 9: Specifications

    Specifications 3.Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE NOMINAL CAPACITY and NOMINAL INPUT cooling heating 5.27 Capacity rated Btu/h 18000 1.87 2.81 ³ ³ TECHNICAL SPECIFICATIONS 997*230*322 1085*329*430 15.5 Sound pressure(high/medium/low) 44/41/38 Sound level Domestic air conditioner...

  • Page 10: Sensors List

    Sensors list TECHNICAL SPECIFICATIONS-PARTS cooling heating ³ Speed(super/high/low) 1100/1000/900 Type ML fin- 7HI-HX tube Heat exchanger c t i t,Left,Horizontal,Downward Removable/Washable/Mildew Proof Air filter Microcomputer Control Temperature control l l o Note: the data are based on the conditions shown in the table below Conversation formulae n i l Kcal/h= KW×860...

  • Page 11: Pinping Diagrams

    Piping diagrams 5 Pinping diagrams Domestic air conditioner...

  • Page 12: Printed Circuit Board Connector Wiring Diagram

    Connector Wiring Diagram 6.Printed Circuit Board Connector Wiring Diagram 6.1 Indoor unit Connectors Indoor PCB series PCB connector Connect with load connector for power line N. CN17 connector for power line L. CN23 connector for compressor control CN501 connector for up and down step motor. connector for ambient temp.
  • Page 13 Connector Wiring Diagram Connector wring diagram CN48 CN501 CN23 CN17 Domestic air conditioner...
  • Page 14 Connector Wiring Diagram Wiring Diagrams INDOOR WIRING DIAGRAM DC FAN M OTOR C0N3 ION GENERATOR C0N1 FUSE1 T3.15A/250VAC CN17 CN31 left stepm otor CN23 up-down stepm otor CN501 EM ERGENCY SW ITCH B(or BL) W(or BR) PIPING TEM P SENSOR AM BIENT TEM P SENSOR RECEIVER DISPLAY 1(L) 2(N)

  • Page 15: Functions And Control

    Functions and control 7.Functions and control 7.1 Main functions and control specifications Including brief introduction to air conditioners of series models and electric control function. 7.1.1 Automatic running (1) Single cold automatic run mode: First entering into this mode, the main control “MCU” determines the corresponding work pattern according to the indoor temperature between cooling mode and blowing mode.
  • Page 16 Functions and control temperature control precision: 1 compressor can’t be controlled by temperature sensor within 2 minutes after it starts. control character: when Tr Ts, outlet air from compressor is on and indoor fan motor run at fixed wind speed. When Tr Ts, outlet air from compressor is off , and when Tr >...
  • Page 17 Functions and control State1 State2 State3 Ts-1 Ts+2 Ts+2 When all the ranges alternate, there is ±1 difference. 7.1.5 Heating mode: (cooling only have no the mode) *Temperature control range : 16 —30 *Temperature control precision: 1 *Control Character: When Tr Ts, compressor, four-ways valve and outdoor fan motor is on, indoor fan motor runs as in cold blast mode, and 4 of compensation is added after compressor is started.
  • Page 18 Functions and control 23 , fan motor enter breeze mode; and if the temperature of coil pipe is below 20 , fan motor stops running. 7.1.5.2 High temperature protection and high temperature expiration protection: 7.1.5.2.1 High temperature prevention: When the temp. of coil pipe is above 56 , the outdoor fan motor stops. When the temp descends to 52 , the outdoor fan motor is restarted and fan speed invertage frequence is more than 45 seconds.
  • Page 19 Functions and control 7.1.6 Timer function: You can set 24-hour timer on or timer off as required, and the minimum time unit is 1 minute. After setting, the indicator of indoor unit is on , and it is off when timer setting is completed. There are several timer mode as follows. 7.1.6.1 Timer on: The LED of “timer on”...
  • Page 20 Functions and control 7.1.8.2 If the switch is kept pressed for 5 seconds, buzzer ring two times and unit enter enter test run mode. 7.1.8.3 Press the switch again, and then closes. 7.1.8.4 Enter emergency operation from timer mode, then timer is cancelled. 7.1.9 Test run: 7.1.9.1 The temperature sensor of inlet air doesn’t work, and compressor starts (but subject to the limit of -minute delay excluding the first time), and high wind, cooling, and air door is open.
  • Page 21 Functions and control 273.6494 246.2437 221.3111 -1.76 1.60 256.7445 231.4612 208.4122 -1.74 1.59 240.9897 217.6590 196.3462 -1.72 1.57 226.3000 204.7662 185.0545 -1.70 1.56 212.5973 192.7176 174.4829 -1.68 1.54 199.8093 181.4531 164.5813 -1.66 1.53 187.8698 170.9169 155.3033 -1.64 1.51 176.7176 161.0578 146.6059 -1.62 1.49...
  • Page 22 Functions and control 24.9822 24.1034 23.2271 -0.78 0.77 23.8050 23.0000 22.1950 -0.78 0.77 22.7500 21.9499 21.1520 -0.78 0.78 21.7477 20.9536 20.1638 -0.82 0.81 20.7951 20.0081 19.2272 -0.86 0.85 19.8895 19.1104 18.3394 -0.89 0.88 19.0285 18.2581 17.4974 -0.93 0.92 18.2094 17.4484 16.6988 -0.97 0.95...
  • Page 23 Functions and control 4.3689 4.0055 3.6678 -2.49 2.31 4.2154 3.8605 3.5312 -2.53 2.35 4.0682 3.7216 3.4004 -2.58 2.39 3.9268 3.5883 3.2750 -2.63 2.43 3.7910 3.4605 3.1549 -2.68 2.48 3.6606 3.3378 3.0398 -2.73 2.52 3.5353 3.2201 2.9294 -2.77 2.56 3.4150 3.1072 2.8237 -2.82 2.60...
  • Page 24 Functions and control 1.0955 0.9624 0.8443 -4.76 4.22 1.0644 0.9342 0.8189 -4.82 4.27 1.0344 0.9070 0.7943 -4.88 4.32 1.0053 0.8807 0.7706 -4.94 4.37 0.9771 0.8553 0.7478 -5.00 4.41 0.9499 0.8307 0.7256 -5.06 4.46 0.9235 0.8070 0.7043 -5.12 4.51 0.8980 0.7840 0.6837 -5.18 4.56...
  • Page 25 Functions and control 39.3792 36.7676 34.2983 -1.43 1.35 37.4465 35.0144 32.7108 -1.41 1.33 35.6202 33.3552 31.2062 -1.38 1.31 33.8936 31.7844 29.7796 -1.36 1.29 32.2608 30.2968 28.4267 -1.34 1.28 30.7162 28.8875 27.1431 -1.32 1.26 29.2545 27.5519 25.9250 -1.29 1.24 27.8708 26.2858 24.7686 -1.27 1.22...
  • Page 26 Functions and control 6.0170 5.7454 5.4812 -1.25 1.22 5.7997 5.5316 5.2712 -1.29 1.25 5.5914 5.3269 5.0704 -1.33 1.29 5.3916 5.1308 4.8783 -1.37 1.33 5.2001 4.9430 4.6944 -1.41 1.36 5.0163 4.7630 4.5185 -1.45 1.40 4.8400 4.5905 4.3500 -1.49 1.44 4.6708 4.4252 4.1887 -1.53 1.47...
  • Page 27 Functions and control 1.4562 1.3308 1.2151 -3.17 2.93 1.4139 1.2910 1.1776 -3.22 2.97 1.3730 1.2525 1.1415 -3.27 3.01 1.3335 1.2153 1.1066 -3.32 3.06 1.2953 1.1794 1.0730 -3.38 3.10 1.2583 1.1448 1.0405 -3.43 3.15 1.2226 1.1113 1.0092 -3.48 3.19 1.1880 1.0789 0.9789 -3.53 3.24...

  • Page 28: System Configuration

    System configuration 8.System configuration 8.1System configuration After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling(or heating) well, and to know a clever method of using it.
  • Page 29 System configuration 8.2 Instruction Parts and Functions Horizontal louver (Adjust up and down air flow Front panel Don’t adjust it manually) Air Filter (inside) Vertical blade (Adjust left and right air flow) front panel Display board Signal receiver Operation mode indicator Setting temp.display (White light for COOL DRY mode.
  • Page 30 System configuration Operation Emergency operation and test operation Base Operation Emergency Operation: Use this operation only when the remote controller Remote controller is defective or lost. When the emergency operation switch is pressed,the" Pi "sound is heard once, which means the start of this operation.
  • Page 31 System configuration Operation POWER/SOFT Operation Sleep Operation POWER Operation Before going to bed,you can simply press the SLEEP When you need rapid heating or cooling, you can use this function. button and unit will operate in SLEEP mode and bring In COOL mode, fan speed automatically takes high speed of you a sound sleep.
  • Page 32 System configuration Air Filter cleaning Operation Open the inlet grille by pulling it upward. Remove the filter. Push up the filter's center tab slightly until it is released from the stopper, and remove the filter downward. Timer On/Off On-Off Operation Clean the filter.
  • Page 33 System configuration Cautions WARNING Please call Sales/Service Shop for the Installation. Do not attempt to install the air conditioner by yourself because improper works may cause electric shock, fire, water leakage. WARNING Check proper When abnormality such as burnt-small found, Use an exclusive immediately stop the operation button and installation of the...
  • Page 34 System configuration Trouble shooting Cautions Before asking for service, check the following first. Do not obstruct or cover the ventilation grille of the air. Do not put fingers or any other things into the inlet/outlet and swing louver. Phenomenon Cause or check points Do not allow children to play with the air conditioner .In no When unit is stopped, it won't restart...

  • Page 35: Dimensional Drawings

    Service Diagnosis 9.Dimensional drawings 997mm 322mm 230mm 355mm 79mm 79mm 644mm 10.Center of gravity 997mm 95.3mm 320.4mm 230mm Domestic air conditioner...

  • Page 36: Service Diagnosis

    Service Diagnosis 11.Service Diagnosis 11.1 Caution for Diagnosis The operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2.
  • Page 37 Service Diagnosis Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred. 11.4.1 Thermistor or Related Abnormality Indoor Display E1: Room temperature sensor failure E2: Heat-exchange sensor failure Method of The temperatures detected by the thermistors are used to determine thermistor errors Malfunction Detection...
  • Page 38 Service Diagnosis 11.4.2 EEPROM abnormal Indoor Display E4: indoor EEPROM error Method of The Data detected by the EEPROM are used to determine MCU Malfunction Detection Malfunction when the data of EEPROM is error or the EEPROM is damaged Decision Conditions Supposed Faulty EEPROM data...
  • Page 39 Service Diagnosis 11.4.3 Indoor AC fan motor malfunction Indoor Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Malfunction abnormal fan motor operation Detection Malfunction when the detected rotation feedback signal don’t received in 2 minutes Decision Conditions Supposed...

  • Page 40: Circuit Diagrams

    Circuit diagrams 12. Circuit diagrams R100 100nF C32 100nF C33 100nF R101 24C04 EEPROM MODE OFF OFF 1-12-SCL J8 ON TJC8-04- 立式 1-11-SDA 在线烧写 100nF 2SA1037AK TJC8-04- 立式 23 26 33 35 R33 560Ω 1-6-RST 4.7uF-50V R27 R28 100nF B4B-XH-A( 原色 - 立式 ) C34 C35 10nF 10nF...
  • Page 41 2015 Johnson Controls, Inc. www.johnsoncontrols.com Doc. No.: MH9FXCAH--151103 18...

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