Johnson Controls Y Seroes Installation And Maintenance Manual
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Johnson Controls Y Seroes Installation And Maintenance Manual

Inverter-driven air conditioning units
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Installation
and
Maintenance
Manual
"Y" SERIES
INVERTER-DRIVEN AIR
CONDITIONING UNITS
Type
INDOOR UNITS
Type
OUTDOOR UNITS
PLEASE READ AND
UNDERSTAND THIS
MANUAL BEFORE USING
THIS INVERTER-DRIVEN
AIR CONDITIONING UNIT.
KEEP THIS MANUAL FOR
FUTURE REFERENCE.
Model
DHY09NWB21S
DHY12NWB21S
DHY18NWB21S
DHY24NWB21S
Model
DHY09CSB21S
DHY12CSB21S
DHY18CSB21S
DHY24CSB21S

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Summary of Contents for Johnson Controls Y Seroes

  • Page 1 Installation Maintenance Manual "Y" SERIES INVERTER-DRIVEN AIR CONDITIONING UNITS Type Model DHY09NWB21S DHY12NWB21S INDOOR UNITS DHY18NWB21S DHY24NWB21S Type Model DHY09CSB21S DHY12CSB21S OUTDOOR UNITS DHY18CSB21S DHY24CSB21S PLEASE READ AND UNDERSTAND THIS MANUAL BEFORE USING THIS INVERTER-DRIVEN AIR CONDITIONING UNIT. KEEP THIS MANUAL FOR FUTURE REFERENCE.
  • Page 2 Important Notice ● Johnson Controls, Inc. pursues a policy of continuing improvement in design and performance in its products. As such, Johnson Controls, Inc. reserves the right to make changes at any time without prior notice. ● Johnson Controls, Inc. cannot anticipate every possible circumstance that might involve a potential hazard.

  • Page 3: Table Of Contents

    Table of Contents 1. Introduction and Safety Summary ............i 2. Installation ........................1 2.1 Installation Dimension Diagram ..................1 2.2 Main Tools for Installation and Maintenance ..............2 2.3 Installation Procedures.....................3 2.4 Installation Checking Parts .....................4 2.5 Selection of Installation Location ..................4 2.6 Electric Connection Requirement ..................4 2.7 Installation of Indoor Unit....................4 2.8 Installation of Outdoor Unit ....................7 2.9 Vacuum Pump/Leak Detection ..................8...
  • Page 4 Never bypass or jump-out any safety device or switch. ● Johnson Controls, Inc. will not assume any liability for injuries or damage caused by not following steps outlined or described in this manual. Unauthorized modifications to Johnson Controls products are prohibited as they…...
  • Page 5 Take the following precautions to reduce the risk of property damage. ● Be careful that moisture, dust, or variant refrigerant compounds not enter the refrigerant cycle during installation work. Foreign matter could damage internal components or cause blockages. ● If air filters are required on this unit, do not operate the unit without the air filter set in place. If the air filter is not installed, dust may accumulate and breakdown may result.
  • Page 6 Controls uses only refrigerants that have been approved for use in the unit’s intended home country or market. Johnson Controls distributors similarly are only authorized to provide refrigerants that have been approved for use in the countries or markets they serve. The refrigerant used in this unit is identified on the unit’s faceplate and/or in the associated manuals.
  • Page 7 under pressure and never open pressurized system parts. ● Before installation is complete, make sure that the refrigerant leak test has been performed. If refrigerant gases escape into the air, turn OFF the main switch, extinguish any open flames and contact your service contractor.
  • Page 8 ● Communication cabling shall be a minimum of 18-Gauge, 2-Conductor, Stranded Copper. Shielded cable must be considered for applications and routing in areas of high EMI and other sources of potentially excessive electrical noise to reduce the potential for communication errors. When shielded cabling is applied, proper bonding and termination of the cable shield is required as per Johnson Controls guidelines.

  • Page 9: Installation

    2. Installation 2.1 Installation Dimension Diagram Space to the wall Space to the wall At least 5 8/9 inch At least 5 8/9 inch Condensate pipe Installation and Maintenance...

  • Page 10: Main Tools For Installation And Maintenance

    2.2 Main Tools for Installation and Maintenance 1. Level meter, measuring tape 2. Screw driver 3. Impact drill, drill head, electric drill 4. Electroprobe 5. Universal meter 6. Torque wrench, open-end wrench, inner hex wrench 9. Manifold gauge 7. Electronic leakage detector 8.

  • Page 11: Installation Procedures

    2.3 Installation Procedures Start installation Preparation before installation Read the requirements Select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install wall-mounting Install outdoor unit mount (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Mount outdoor unit...

  • Page 12: Installation Checking Parts

    2.4 Installation - Checking Parts 2.6 Electric Connection Requirement Name Name 1. Safety Precaution Sealant Indoor unit (1) All electric safety regulations must be followed when Outdoor unit Wrapping tape installing the unit. Support of outdoor (2) Use proper power supply circuit and air switch in Connection pipe unit accordance with local safety regulations.
  • Page 13 in the holes. 5. Connect the Pipe of Indoor Unit (3) Fix the wall-mounting frame on the wall with tapping screws (1) Aim the pipe joint at the corresponding bellmouth.(As (ST4.2X25TA) and then check if the frame is firmly installed by shown in Fig.5) pulling the frame.
  • Page 14 7. Connect Wire of Indoor Unit 8. Bind up Pipe (1) Open the panel, remove the screw on the wiring cover (1) Bind up the connection pipe, power cord and condensate hose with the band.(As shown in Fig.14) and then take down the cover.(As shown in Fig.11) (2) Reserve a certain length of drain hose and power cord Screw for installation when binding them.

  • Page 15: Installation Of Outdoor Unit

    2.8 Installation of Outdoor Unit Refer to the following table for torque tightening: 1. Installupport of Outdoor Unit(select it according to the Hex nut diameter(inch) Tightening torque(ft·Ibf) Φ1/4 actual installation situation) 11.10~14.75 Φ3/8 20.12~29.50 (1) Select installation location according to the house structure. Φ1/2 (2) Secure the support of outdoor unit on the selected location 33.19~40.56...

  • Page 16: Vacuum Pump/Leak Detection

    2.10 Post Installation Testing (3) The water outlet can't be placed in water in order to drain smoothly.(As show in Fig.27) 1. Check after Installation Check according to the following requirements after finishing installation. The drain hose can't be fluctuant Items to be checked Possible malfunction Has the unit been...

  • Page 17: Troubleshooting

    3. Troubleshooting 3.1 Precautions before Performing Inspection or Repair Be cautious during installation and maintenance. Follow safety regulations at all times to avoid electric shock and casualty or even death due to drop from high attitude. * Static maintenance is is performed while the unit is d-energized. For static maintenance, make sure that the unit is de-energized and the plug is disconnected.

  • Page 18: Confirmation

    3.2 Confirmation (1)Confirmation of Power Supply Confirm that the power breaker operates(ON) normally; (2)Confirmation of Power Voltage Confirm that power voltage is AC 208-230 ±10%. If power voltage is not in this range, the unit may not operate normally. 3.3 Flashing LED of Indoor/Outdoor Unit and Primary Judgment Installation and Maintenance...
  • Page 19 (1)Models:09/12K: Malfunction and Status Display Table Malfunction of Display of Malfunction of Indoor Unit Outdoor Unit Status of LED Status of LED Lamp Lamp Malfunction Display Malfunction Name Type LED Lamp LED Lamp Yellow Lamp Nixie Tube Cooling Heating Lamp Lamp Operation Blinks...
  • Page 20 Wrong connection of communication wire or malfunction of expansion valve (free match) Malfunction of current detection for the Blinks for complete unit 13 imes Wrong connection of communication wire or status of detecting malfunction of expansion valve (free match) Blinks Mode conflict for 7 times...
  • Page 21 If malfunction occurs,corresponding code will display and the unit will resume normal until protection or malfunction disappears. Yellow indicator blinks for once Compressor stars (normal) Defrosting (normal display of indoor unit) Yellow indicator blinks for twice Anti-freezing protection (normal Yellow indicator blinks for 3 times display of indoor unit) IPM protection Yellow indicator blinks for 4 times...
  • Page 22 Analysis or processing of some of the malfunction display: 1. Compressor discharge protection operation; malfunction of compressor; malfunction of protection relay; malfunction of discharge sensor; outdoor temperature too high. Processing method: refer to the malfunction analysis in the above section. 2.
  • Page 23 Display Method of Outdoor Unit (Indicator has 3 kinds Display Method of Indoor Unit of display status and they will be displayed Malfunction A/C status Possible Causes circularly every 5s.) Name Indicator Display (during Dual-8 blinking, ON 0.5s and OFF 0.5s) ■Illuminated Blink Code...
  • Page 24 Display Method of Outdoor Unit (Indicator has 3 kinds Display Method of Indoor Unit of display status and they will be displayed Malfunction A/C status Possible Causes circularly every 5s.) Name Indicator Display (during Dual-8 blinking, ON 0.5s and OFF 0.5s) ■Illuminated Blink Code...
  • Page 25 Display Method of Outdoor Unit (Indicator has 3 kinds Display Method of Indoor Unit of display status and they will be displayed Malfunction A/C status Possible Causes circularly every 5s.) Name Indicator Display (during Dual-8 blinking, ON 0.5s and OFF 0.5s) ■Illuminated Blink Code...
  • Page 26 Display Method of Outdoor Unit (Indicator has 3 kinds Display Method of Indoor Unit of display status and they will be displayed Malfunction A/C status Possible Causes circularly every 5s.) Name Indicator Display (during blinking, Dual-8 ON 0.5s and OFF 0.5s) ■Illuminated Blink Code...

  • Page 27: How To Check Simply The Main Part

    3.4 How to Check the Main Parts Indoor unit: (1)Temperature sensor malfunction Start Is the wiring terminal between temperature sensor and the controller loosened or poor ly contacted? Insert the temperature sensor tightly M alfunction is eliminated. Is there short circuit due to tri-pover of the pa rts? Make the parts upright Malfunction is...
  • Page 28 (2)Indoor fan does not operate (H6) Start Pull the blade by hand under de-energization status Adjust the motor and Whether the blade assembly to let blade can operate the motor can operate smoothly smoothly Is malfunction eliminated Check whether the Reinsert the wiring wiring terminal between terminal of indoor fan...
  • Page 29 (3)Jumper cap malfunction (C5) C5 is displayed on the unit. Install a matching Is there jumper cap on the jumper cap . controller? Is the malfunction eliminated? Re-insert the jumper Is the jumper cap inserted incorrectly or improperly? Is the malfunction eliminated? Replace the jumper...
  • Page 30 (4) Communication malfunction (E6) Poor contact of any line may lead to communication malfuntion. Is there incorrect match between the main board and the display panel or between the indoor and outdoor boards? Is there incorrect connection? Note: 1.Before replacing mainboard of indoor unit, make sure the correct replacement is on hand. The following tests should be done: a.Check if protective tube FUSE 1 has open circuit.
  • Page 31 Outdoor unit: (1) Capacity charging malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit) Main detection point: Detect if the voltage of L and N terminal of wiring board is between 210AC-240AC by alternating voltage meter; Is reactor (L) well connected? Is connection wire loosened or pull-out? Is reactor (L) damaged Malfunction diagnosis process: Turn on the unit and wait 1 minute...
  • Page 32 (2) IPM protection, desynchronizing malfunction, phase current of compressor is overcurrent (AP1 below is control board of outdoor unit) Main detection point: If control board AP1 and compressor COMP is well connected? If they are loosened? If the connection sequence is correct? Is voltage input in the normal range (Test the voltage between L, N of wiring board XT by DC voltage meter)? If coil resistance of compressor is normal? Is compressor coil insulating to copper pipe well? If the work load of unit is heavy? If radiating of unit is well?
  • Page 33 Energize and switch on Use AC voltmeter If the voltage Check the supply to measure the IPM protection between terminal L voltage and voltage between occurs after the and N on wiring machine has run for terminal L and N restore it to board XT is within a period of time?
  • Page 34 (3) Diagnosis for anti-high temperature, overload protection (AP1 below is control board of outdoor unit) Main detection point: If the outdoor ambient temperature is in normal range; If the indoor and outdoor fan is running normal; If the radiating environment of indoor and outdoor unit is well. Malfunction diagnosis process: Anti-high temperature, overload protection...
  • Page 35 (4) Diagnosis for failure start up malfunction (AP1 below is control board of outdoor unit) Main detection point: If the compressor wiring is correct? If the stop time of compressor is enough? If the compressor is damaged? If the refrigerant charging is too much? Malfunction diagnosis process: Energize the unit and start it...
  • Page 36 (5) Diagnosis for compressor synchronism (AP1 below is control board of outdoor unit) Main detection point: If the system pressure is over-high? If the work voltage is over-low? Malfunction diagnosis process: Synchronism Synchronism after energize the unit occurred during and start it operation Check if the fan Replace fan...
  • Page 37 (6) Diagnosis for overload and discharge malfunction (AP1 below is control board of outdoor unit) Main detection point: If the electron expansion valve is connected well? Is the expansion valve damaged? If the refrigerant is leakage? If the overload protector is damaged? Malfunction diagnosis process: After the unit de-energized...
  • Page 38 (7) PFC (correction for power factor) malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit) Main detection point: Check if reactor (L) of outdoor unit and PFC capacity are damaged. Malfunction diagnosis process: Start Check the connection wire of reactor (L) of outdoor unit and PFC capacity...
  • Page 39 (8) Communication malfunction (AP1 below is control board of outdoor unit) Main detection point: Check if the connection wire and the built-in wiring of indoor and outdoor unit is connected well and no damaged; If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged Malfunction diagnosis process: Start If the unit is operation...

  • Page 40: Troubleshooting For Normal Malfunction

    3.5 Troubleshooting for Normal Malfunction 1. Air Conditioner can't Be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether it's due to power failure. If yes, No power supply, or poor After energization, operation indicator isn’t bright wait for power recovery.
  • Page 41 4. ODU Fan Motor can't Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Connect wires according to wiring diagram to Wrong wire connection, or poor Check the wiring status according to circuit make sure all wiring terminals are connected connection diagram firmly...

  • Page 42: Appendix

    Appendix: Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit Fahrenheit Fahrenheit display Fahrenheit display Fahrenheit display Fahrenheit Celsius （℃） Celsius （℃） Celsius （℃） （℉） （℉） （℉） temperature temperature temperature （℉）...

  • Page 43: Appendix 3: Pipe Expanding Method

    Appendix 3: Pipe Expanding Method Pipe Note: Pipe cutter Improper pipe expanding is the main cause of refrigerant leakage.Please expand the pipe according to the following steps: Leaning Uneven Burr A:Cut the pip ● Confirm the pipe length according to the distance of indoor unit and outdoor unit. ●...

  • Page 44: Appendix 4: List Of Resistance For Temperature Sensor

    Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Temp.( Temp.( Temp.( Temp.( -2.2 138.1 18.75 138.2 3.848 208.4 1.071 -0.4 128.6 69.8 17.93 3.711 210.2 1.039 121.6 71.6...
  • Page 45 Resistance Table of Tube Temperature Sensors for Outdoor and Indoor(20K) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Temp.( Temp.( Temp.( Temp.( -2.2 181.4 25.01 138.2 5.13 208.4 1.427 -0.4 171.4 69.8 23.9 4.948 210.2 1.386 162.1 71.6 22.85 141.8 4.773 1.346 153.3 73.4 21.85 143.6 4.605...
  • Page 46 Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Temp.( Temp.( Temp.( Temp.( -20.2 853.5 120.2 18.34 190.4 4.754 -18.4 799.8 51.8 93.42 17.65 192.2 4.609 -16.6 53.6 89.07 123.8 16.99 4.469 -14.8 703.8 55.4 84.95 125.6 16.36 195.8 4.334...
  • Page 48 Product improvement, specifications and appearance in this manual are subject to change without prior notice. LIT - 12012177 © Johnson Controls, Inc. USA...

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