Lennox VVCD S6-5P Series Installation Manual
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Lennox VVCD S6-5P Series Installation Manual

Lennox VVCD S6-5P Series Installation Manual

Vrf (variable refrigerant flow)
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VRF (Variable Refrigerant Flow)
Installation manual
VVCD***S6-5P
• Thank you for purchasing this Lennox Product.
• Before operating this unit, please read this manual carefully and retain it for future reference.
DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 1
DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 1
2025-02-14 오전 9:11:41
2025-02-14 오전 9:11:41

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Summary of Contents for Lennox VVCD S6-5P Series

  • Page 1 VRF (Variable Refrigerant Flow) Installation manual VVCD***S6-5P • Thank you for purchasing this Lennox Product. • Before operating this unit, please read this manual carefully and retain it for future reference. DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 1 DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 1 2025-02-14 오전 9:11:41...
  • Page 2 Contents Safety Information Safety Information Installation General Information Product Inspection Accessories Choosing the installation location Indoor unit installation Refrigerant piping Performing leak test & insulation Additional refrigerant Drain pipe installation Water leakage test Drain pipe insulation Wiring Work Wiring Diagram Selecting motor speed Blower CFM tables Connecting External Float switch...

  • Page 3: Safety Information

    • Do not use means to accelerate the defrost operation or to clean, other than those recommended by Lennox. • Do not pierce or burn. • Be aware that refrigerants may not contain an odor.
  • Page 4 • This manual explains how to install an indoor unit with the unit. a split system with two Lennox units. Using other types • The air conditioner contains a refrigerant that must be of units with different control systems may damage the disposed of as special waste.
  • Page 5 Installing the unit • If any gas or impurities, except R-32 refrigerant, come into the refrigerant pipe, a serious problem may occur and it may cause injury. Use the supplied accessories, specified components and WARNING tools for the installation. – Do not use the pipe and the installation product IMPORTANT: When installing the unit, always connect the used for the R-22, R-410A refrigerant.
  • Page 6 For leak detection to be effective, the unit must be • Any auxiliary device installed must be approved by Lennox electrically powered at all times after installation, other and must be suitable for operating with the refrigerant than when servicing.
  • Page 7 Cabling should be protected from excessive vibration, pressure, performed and instructed to follow all instructions sharp edges, and other adverse environmental factors. provided by Lennox, national and local authorities. • The area shall be checked with an approved refrigerant Detection of flammable refrigerants detector before and during any work on the system.
  • Page 8 For complete replacement instructions, please refer to the Service Manual. • The RDS sensor must only be replaced with sensors as specified by Lennox. Sensor replacement must be performed by a certified technician. 8 English DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 8 DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 8 2025-02-14 오전...

  • Page 9: General Information

    There are no shipping or spacer brackets which need to be removed before startup. See local Distributor for more information. Lennox assumes no liability for freight damage. Also check to be sure all accessories such as heater kits, and coils are available.

  • Page 10: Choosing The Installation Location

    Choosing the installation location Choosing the installation location Installation location requirements CAUTION • As a rule, the unit cannot be installed at a height of less • There must be no obstacles near the air inlet and outlet. than 8.2ft (2.5m). •...
  • Page 11 ※ VSTAT04P-1 ※ R-32-capable wired remote controls should be purchased separately. WARNING • Lennox Electronics is not responsible for any loss or damage to the product resulting from using anything but the specified wired remote control. Outdoor unit Outdoor unit...
  • Page 12 Choosing the installation location If using two or more R-32-capable wired remote controls, at least one of them must be placed in the same room as the indoor units. Outdoor unit Outdoor unit Indoor unit Indoor unit R-32 R-32 R-32 R-32 Make sure to connect all indoor units to respective R-32-capable wired remote controls.
  • Page 13 Dimensions LEFT SIDE RIGHT SIDE FRONT BOTTOMs DIMENSIONAL DATA MULTI-POSITION AIR HANDLER MODEL inch 17.5 15.5 12.5 13.5 6.75 16.75 VVCD0 12/18/24 S6-5P 444.5 1092.2 533.4 393.7 317.5 342.9 279.4 171.45 425.45 355.6 279.4 215.9 50.8 101.6 50.8 inch 12.5 15.375 6.75 12.75...

  • Page 14: Indoor Unit Installation

    Indoor unit installation Indoor unit installation Refrigerant pipe work must be done before installing the indoor unit. Location Access for servicing is an important factor in the location of any air handler. Provide a minimum of 30 inches (762 mm) in front of the appliance for access to the control box, heating elements, blower and air filters.
  • Page 15 Locate appliance where control wiring can be easily routed to the controller and where the wiring will not be damaged. Locate appliance where refrigerant lines can be easily routed from the evaporator coil to the system. Locate the appliance where condensate lines can be easily routed to an available drain. Be sure to route condensate drain piping so as not to obstruct access to the air filter.
  • Page 16 Indoor unit installation Return air requirements Return Air Requirements In order for the air handler to work properly, a closet or alcove must have a certain total free area opening for the return air. For A/C and HP Air Handlers 1/3 HP Blower Motor Minimum 200 in²...
  • Page 17 Typical Closet Installations Provisions shall be made to permit the air in the rooms and the living spaces to return to the air handler. Failure to comply may cause a reduction in the amount of return air available to the blower, causing reduced air flow resulting in improper heating and cooling of the living space.
  • Page 18 Indoor unit installation Horizontal right application (left to right) The unit is shipped to be installed without modification in a right to left configuration. For left to right applications: Remove the unit access panels Remove the cooling coil after disassembling bracket coil and plate. Move the condensate drain pan to the right side of the unit chassis.
  • Page 19 How to change the position of the wires Please change the position of the refrigerant detection sensor as shown in the image below. Please proceed with the fixing way of the wires according to the position of the drain pan as shown in the image below. Use a cable tie to attach the refrigerant detector wires to the third hairpin turn on the coil.
  • Page 20 Indoor unit installation Closet installation Prior to installing the air handler make sure holes are cut into the floor for refrigerant tubing, drain line, electrical wiring, and control wiring. Remove the top shipping cover and corner posts. Remove the bottom shipping cover. Remove the blower and control box access panel (door).

  • Page 21: Refrigerant Piping

    Refrigerant piping NOTE • The evaporator coil liquid and suction pipes are closed and comes filled with high pressure nitrogen. Before opening the liquid and suction pipe ends you must first release the high pressure nitrogen using the service port on the suction pipe.

  • Page 22: Performing Leak Test & Insulation

    Performing leak test & insulation Performing leak test & insulation Leak test LEAK TEST WITH NITROGEN (before opening valves) To detect basic refrigerant leaks, before creating a vacuum and circulating the R-32, its the responsibility of the installer to pressurize the whole system with nitrogen (using a pressure regulator) at a pressure above 29.0 PSI (0.2 MPa), less than 594.7 PSI (4.1 MPa) LEAK TEST WITH R-32 (after opening valves) Before opening valves, discharge all the nitrogen in the system and create a vacuum.
  • Page 23 Insulation Once you have checked that there are no leaks in the system, you can insulate the piping and hose. • To avoid condensation problems, place 0.51” (T13.0mm) or thicker Acrylonitrile Leak check Butadien Rubber separately around each refrigerant pipe. •...

  • Page 24: Additional Refrigerant

    Performing leak test & insulation Select the insulation of the refrigerant pipe. • Insulate the gas side and liquid side pipe referring to the thickness according to the pipe size. • Indoor temperature of 86 °F(30 °C) and humidity of 85% is the standard condition. If install in a high humidity condition,use one grade thicker insulator by referring to the table below.

  • Page 25: Drain Pipe Installation

    Drain pipe installation The air handler “A” coil drain pan has two ¾” NPT (Φ19.05mm) female primary and two secondary connections (left or right hand). The horizontal pan has two ¾” NPT (Φ19.05mm) females, one primary and one secondary. Piping from each fitting used is to have 2 inches (50.8mm) minimum trap and each runs in such a manner as to provide enough slope for adequate drainage to a visible area.

  • Page 26: Water Leakage Test

    Water leakage test Water leakage test Pour water into the condensate pan. Make sure that draining is done properly by checking end of the drain pipe. If water leakage occurs, make sure the indoor unit is level. Also verify the drain pipe is installed with a downward slope away from the indoor unit.

  • Page 27: Wiring Work

    Wiring Work WARNING • For personal safety be sure to turn the electrical power “OFF” at the main entrance (Home Circuit Breaker Box) and at the unit control box circuit breakers before attempting any service or maintenance operations. Homeowners should never attempt to perform any maintenance which requires opening the air handler control box door.
  • Page 28 Wiring Work Power supply wiring with accessory electric heat kit Before wiring work, you must turn off all power source. Indoor unit power should be supplied through the breaker (ELCB or MCCB+ELB ) separate from the outdoor power. ELCB : Earth Leakage Circuit Breaker MCCB : Molded Case Circuit Breaker ELB : Earth Leakage Breaker Only copper power cables should be used.
  • Page 29 Carefully pass the accessory heating element through the rectangular opening in the discharge of the air handler and secure the heating element with the screws from step 8. Heating element support rod must be seated in the hole on the opposite side of the discharge.
  • Page 30 Wiring Work 18 Remove the wiring diagram from the accessory heat kit. Remove the paper that covers the adhesive back and place the electric heat wiring diagram over the wiring diagram located on the blower housing. Route temperature sensor from the accessory electric heat kit to the lower section of the AHU cabinet. Attach the sensor to the bottom of the suction pipe as shown below with included wire ties.
  • Page 31 Power supply connections If the air handler has been installed prior to installing the electric heaters or if an older unit is being replaced, the supply power wires must be checked to make sure the wires are the proper sizes to handle the current load for the heaters. Refer to table below for correct wire size.
  • Page 32 Wiring Work ELECTRICAL DATA Minimum Wire Size (AWG) Short-Circuit Current Rating Circuit 1 Circuit 2 "SCCR" Indoor Unit Models 167°F (75°C) / 167°F (75°C) / 140°F (60°C) 140°F (60°C) kA rms symmetrical V maximum 194°F (90°C) 194°F (90°C) SMALL CABINET-NOMINAL1.0, 1.5, 2.0 TONS (0 To 5 kW) VVCD012S6-5P VVCD018S6-5P VVCD024S6-5P...
  • Page 33 Communication wiring connections • Communication wires connect through side of air handler and be 2 X 16 AWG shielded. • Use an approved connector at the cabinet of the unit to prevent pulling or shorting of control wires. • F1/F2 in the air handler must connect to the F1/F2 communication bus for that system between all indoor units, MCU’s, EEV kits, and the outdoor unit.
  • Page 34 Wiring Work Selecting compressed ring terminal Silver solder Nominal Nominal dimensions for dimensions for Standard Standard Standard Standard Allowance Allowance Allowance Min. Min. Max. Allowance Min. cable screw dimension dimension dimension dimension [inch(mm)] [inch(mm)] [inch(mm)] [inch(mm)] [inch(mm)] [inch(mm)] [inch(mm)] [inch(mm)] [inch²(mm²)] [inch(mm)] [inch(mm)]...
  • Page 35 Example of Installation • Total power cable length L = 328 ft(100 m), Running current of each units 1[A] • Total 10 indoor units were installed 10[A] 9[A] 1[A] ELCB MCCB+ Indoor unit 1 Indoor unit 2 Indoor unit 10 0 ft (0 m) 32 ft (10 m) 65.6 ft (20 m)
  • Page 36 Wiring Work • Keep distances of 2” (50 mm) or more between power cable and communication cable. • Maximum length of power cables are decided within 10% of power drop. If it exceeds, you must consider another power supplying method. •...

  • Page 37: Wiring Diagram

    Wiring Diagram English DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 37 DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 37 2025-02-14 오전 9:11:47 2025-02-14 오전 9:11:47...

  • Page 38: Selecting Motor Speed

    Selecting motor speed Selecting motor speed Selecting the Constant Torque Blower Speed This air handler uses a Constant Torque high efficiency motor. This motor operates on 240 VAC. The motor speed taps are 24 VAC, 0.03 amps, 60 Hz, 1 PH. The speed taps can be adjusted according to installation needs. Table 4 shows the motor lead connection labeling and the connection definitions.

  • Page 39: Blower Cfm Tables

    Blower CFM tables VVCD012S6-5P, VVCD018S6-5P, VVCD024S6-5P VVCD012S6-5P VVCD018S6-5P VVCD024S6-5P HP: 1/3 HP: 1/3 HP: 1/3 Default motor taps: Default motor taps: Default motor taps: high = 4, mid = 2, low = 1 high = 4, mid = 3, low = 1 high = 4, mid = 2, low = 1 Motor Tap ESP (inch) Motor Tap ESP (inch)
  • Page 40 Blower CFM tables VVCD030S6-5P, VVCD036S6-5P, VVCD048S6-5P VVCD030S6-5P VVCD036S6-5P VVCD048S6-5P HP: 1/2 HP: 1/2 HP: 3/4 Default motor taps: Default motor taps: Default motor taps: high=4, mid=2, low=1 high=4, mid=3, low=1 high=4, mid=2, low=1 Motor Tap ESP (inch) Motor Tap ESP (inch) Motor Tap ESP (inch) 1,318 1,318...
  • Page 41 VVCD054S6-5P, VVCD060S6-5P VVCD054S6-5P VVCD060S6-5P HP: 3/4 HP: 3/4 Default motor taps: Default motor taps: high=4, mid=2, low=1 high=4, mid=2, low=1 Motor Tap ESP (inch) Motor Tap ESP (inch) 1,951 2,027 1,942 2,036 0.25 1,942 0.25 2,027 1,942 2,036 1,915 2,011 1,888 1,976 1,790...
  • Page 42 Set SEG8 for the install option (Refer to "Setting an indoor unit installation option") NOTE • The External Floating switch is not sold separately by Lennox. 42 English DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 42 DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 42 2025-02-14 오전...
  • Page 43 Optional : LED Display indicator specifications when checking Wi-Fi Easy Setup and Wi-Fi status The wireless remote control can be used for Easy Setup, checking the internet connection status and connecting or disconnecting Wi-Fi. Easy Setup Check internet connection status Enable/Disable Wi-Fi Press the button for...
  • Page 44 Setting an indoor unit address and installation option Setting the indoor unit addresses and Make sure that you are entered to the mode for setting options. the installation options with wireless remote controller You cannot set both of the indoor unit addresses and the 2 Digit installation options in a batch: set both of them respectively.
  • Page 45 Take the steps presented in the following table: Steps Remote control display Set the SEG2 and SEG3 values: Set the SEG2 value by pressing the button repeatedly until the value you want to set appears on the remote control display. SEG2 Set the SEG3 value by pressing the button repeatedly until the value you want...
  • Page 46 Setting an indoor unit address and installation option Steps Remote control display Set the SEG6 and SEG8 values: Set the SEG6 value by pressing the button repeatedly until the value you want to set appears on the remote control display. SEG6 Set the SEG8 value by pressing the button repeatedly until the value you want...
  • Page 47 Steps Remote control display Set the SEG11 and SEG12 values: Set the SEG11 value by pressing the button repeatedly until the value you want to set appears on the remote control display. SEG11 Set the SEG12 value by pressing the button repeatedly until the value you want to set appears on the remote control display.
  • Page 48 Setting an indoor unit address and installation option Steps Remote control display 13 Set the SEG16 and SEG17 values: Set the SEG16 value by pressing the button repeatedly until the value you want to set appears on the remote control display. SEG16 Set the SEG17 value by pressing the button repeatedly until the value you want...
  • Page 49 Steps Remote control display 17 Set the SEG21 and SEG22 values: Set the SEG21 value by pressing the button repeatedly until the value you want to set appears on the remote control display. SEG21 Set the SEG22 value by pressing the button repeatedly until the value you want to set appears on the remote control display.
  • Page 50 Setting an indoor unit address and installation option Check whether the option values you have set are Reset remote control: button Down + correct by pressing the button repeatedly. button Down + Press for 10 seconds You can see the "SW Initialization" message. [SEG2, SEG3] [SEG4, SEG5] [SEG6, SEG8]...
  • Page 51 Setting the indoor unit option code with the wired remote control Service mode If you want to use the various additional functions for your Wired Remote Control, press the buttons at the same time for more than 3 seconds. • The password entry screen appears.
  • Page 52 Setting an indoor unit address and installation option Product option Indoor unit/Ventilator option (1/5) Target Address Product option Product option (2/5) Indoor unit/Ventilator option Product option (5/5) Product option 52 English DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 52 DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 52 2025-02-14 오전 9:11:54 2025-02-14 오전...
  • Page 53 [Product option 1page] (1/5) Target Address 20 00 01 [Product option 2page] [Product option 3page] (2/5) (3/5) “0” “1” [Product option 4page] [Product option 5page] (5/5) (4/5) “2” “3” English DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 53 DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 53 2025-02-14 오전 9:11:54 2025-02-14 오전...

  • Page 54: Table Of Contents

    Setting an indoor unit address and installation option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Page number SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 Page number SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 Page number SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 Page number CAUTION •...
  • Page 55 Setting indoor unit addresses and installation options with wired remote control Set the indoor unit address and installation option with the remote control option. Set each option separately since you cannot set the ADDRESS setting and indoor unit installation setting option at the same time. You need to set twice when setting the indoor unit address and installation option.
  • Page 56 Setting an indoor unit address and installation option [Address > Main Address] [Address > RMC Address] Target Address New address Target Address New address 20 00 01 20 00 01 Address setting range : Main (0 ~ 4F) / RMC (0 ~ FE) NOTE •...
  • Page 57 [Installation option 1-1page] (1/5) Target Address 20 00 01 [Installation option 1-2page] [Installation option 1-3page] (2/5) (3/5) “0” “1” [Installation option 1-4page] [Installation option 1-5page] (4/5) (5/5) “2” “3” English DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 57 DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 57 2025-02-14 오전 9:11:56 2025-02-14 오전...
  • Page 58 Setting an indoor unit address and installation option Check operation Set the indoor unit address and installation option with remote controller option. Set the each option separately since you cannot set the ADDRESS setting and indoor unit installation setting option at the same time. You need to set twice when setting indoor unit address and installation option.

  • Page 59: Seg3 Seg4

    Setting an indoor unit installation option (suitable for the condition of each installation location) Check whether power is supplied or not. – When the indoor unit is not plugged in, there should be additional power supply in the indoor unit. Set the installation option according to the installation condition of an air conditioner.

  • Page 60: Seg5 Seg6

    Setting an indoor unit address and installation option 02 series installation option(Detailed) Option No. : 02XXXX-1XXXXX-2XXXXX-3XXXXX Option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Use of external temperature sensor / Function Page Mode Minimizing fan operation when thermostat Use of central control is off Details Use of...

  • Page 61: Seg11 Seg12

    Option SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 Settings for load operation during heater control EEV step when Function Page Use of drain pump Use of heater Fan control during defrost mode / Heater control during heating stops defrost mode Detail Indication Details Indication Details Indication Details Indication...
  • Page 62 Setting an indoor unit address and installation option Option SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 Setting the output of external Buzzer control / whether to use humidity Use of external Maximum filter Function Page control / External heater On or S-Plasma ion sensor / whether to use APP UX DSP (Dual Set control...
  • Page 63 Option SEG19 SEG20 SEG21 SEG22 Individual control Heating setting compensation offset / Removing condensated water in EEV step of stopped unit during the Function Page with remote control the Heat mode oil return or the defrost mode Details Indication Details Indication Details Indication Indication Details Heating setting...
  • Page 64 Setting an indoor unit address and installation option (*4) Default setting value: 9 ℉ (5 ℃) (*5) If the air conditioner operates in the Heat mode immediately after finishing the cooling operation, the condensated water in the drain pan becomes water steam by the heat of the indoor unit heat exchanger. Since the water steam might be condensed on the indoor unit, which may fall into a living space, use this function to remove the water steam out of the indoor unit by operating the fan (for maximum 20 minutes) although the indoor unit is turned off after the Cool mode is turned to the Heat mode.

  • Page 65: Seg17 Seg18

    05 series installation option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 (When setting SEG3) (When setting SEG3) Use of the HR-specific (When setting SEG3) auto changeover Offset for the Offset for the Reference for change from Heat function in the Auto heating reference cooling reference mode to Cool mode...
  • Page 66 Setting an indoor unit address and installation option Installation options for the 05 series (detailed) Option No. : 05XXXX-1XXXXX-2XXXXX-3XXXXX Option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 (When setting (When setting SEG3) SEG3) Use of the HR-specific (When setting SEG3) auto changeover Offset for Reference for Function...
  • Page 67 Option SEG13 SEG14 SEG15 SEG16 SEG17 Dual fuel (compressor lockout) Function Dual fuel (heater lockout) setting setting Indication Detail Indication Detail Disuse Disuse 65 ℉ (18.3 ℃) 45 ℉ (7.2 ℃) 60 ℉ (15.6 ℃) 40 ℉ (4.4 ℃) 55 ℉ (12.8 ℃) 35 ℉...
  • Page 68 Setting an indoor unit address and installation option Option SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 Whether to use UV LED / whether to use BLE Onboarding / whether Forcing FAN Operation for Function to allow fan speed control during Auto mode / MDS (motion Heating and Cooling detection sensor) control UX type Details...
  • Page 69 Option SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 Whether to use UV LED / whether to use BLE Onboarding / Forcing FAN Operation for Function whether to allow fan speed control during Auto mode / Heating and Cooling MDS (motion detection sensor) control UX type Only fan speed or power Use (Fan: Use (Fan:...
  • Page 70 Setting an indoor unit address and installation option Additional information on SEG3, 4, 5, 6, 8, 9 When SEG 3 is set to 1 and the HR-specific auto changeover function is run, the indoor unit operates as shown in the following figure: Reference temperature for change from A : Set with SEG4°F(°C)
  • Page 71 Changing the addresses and options individually When you want to change the value of a specific option, refer to the following table and follow the steps in Common steps for setting the addresses and options on page 44. Option SEG1 SEG2 SEG3 SEG4...
  • Page 72 Setting an indoor unit address and installation option For controlling AC LAMP (On/Off) R-32 CHECK : CN421(YELLOW) AC LAMP ※ Use of the WIRE HARNESS included in the product manual To Main PBA VSTAT10P-1 For controlling EXTERNAL ALARM (On/Off) R-32 CHECK : CN421(YELLOW) EXTERNAL ALARM ※...

  • Page 73: Final Checks And User Tips

    Final Checks and User Tips To complete the installation, perform the following checks and tests to ensure that the air conditioner operates correctly. Check the followings. • Strength of the installation site • Tightness of pipe connection to detect a gas leak •...

  • Page 74: Providing Information For User

    Providing information for user Providing information for user After finishing the installation of the air conditioner, you should explain the following to the user. Refer to appropriate pages in the User’s Manual. How to start and stop the air conditioner How to select the modes and functions How to adjust the temperature and fan speed How to set the timers...
  • Page 75 Wi-Fi module reinstallation guide In some cases, the Wi-Fi module may need to be removed and relocated to improve the Wi-Fi signal connection. Disassemble the front frame. (23 screws) Disconnect Wi-Fi connector Wi-Fi Connector : CN330(YELLOW) Pull the Wi-Fi wire through the wiring hole, and then take out the Wi-Fi module.. English DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 75 DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 75...
  • Page 76 Providing information for user Connect the Wi-Fi wire connector through the wire hole. Assemble the front frame (23 screws) Fix the Wi-Fi module to the Ceiling to avoid the steel structure. 76 English DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 76 DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 76 2025-02-14 오전...

  • Page 77: Troubleshooting

    Troubleshooting • If an error occurs during the operation, one or more LED flickers and the operation is stopped except the LED. • If you re-operate the air conditioner, it operates normally at first, then detect an error again. LED Display on the receiver & display unit Indicators Concealed Type Error...
  • Page 78 Troubleshooting Indicators Concealed Type Error Abnormal conditions Remarks code GREEN Standard Type 1. No communication for 2 minutes between indoor units E101 (Communication error for more than 2 minutes) 2. The indoor unit receiving the communication error from the outdoor unit E102 3.
  • Page 79 Wired remote controller If an error occurs, is displayed on the wired remote controller. If you would like to see an error code, press the Test button. Error mode Contents Error type Indoor unit communication error Communication error Duplicated address setting error Communication error No response error address from indoor unit Communication error...
  • Page 80 Troubleshooting Error mode Contents Error type High pressure blockage error Self diagnostic error (Refrigerant completely Leakage error) Heating operation blocked Self diagnostic error Cooling operation blocked Self diagnostic error Outdoor fan 1 error Self diagnostic error [Inverter] Compressor startup error Outdoor unit protection control error [Inverter] Total current error/PFC over current error Outdoor unit protection control error...
  • Page 81 Error mode Contents Error type Communication error between the main and sub wired remote controllers Wired remote controller error Error of communication down between the indoor unit and wired remote controller after completion of 10 times tracking. Wired remote controller error COM1/COM2 Cross-installed error Error of Main wired remote controller and Sub wired remote controller setting Emergency alarm system on (Emergency Stop)
  • Page 82 DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 82 DB68-13478A-00_IM_VRF R32 MPAHU_AA_EN_.indd 82 2025-02-14 오전 9:12:00 2025-02-14 오전 9:12:00...

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