LG MFL68102203 Air Conditioner Installation Guide

LG MFL68102203 Air Conditioner

Product Specifications

• Sensor Protective Case
  • Rated Voltage: Unit V
  • Dimension (WxHxD): mm
  • Weight: g
  • Refrigerant Detected Concentration: ppm
  • Operating Temperature Range: -25°C to 60°C
  • Preserved Temperature Range: -25°C to 60°C
  • Average Power Consumption : 40mA
• Connecting Cable
  • Dimension of Front Plate (WxHxD): Not specified

Please read this installation manual completely before installing the product. Installation work must be performed by the national wiring standards by authorized personnel only.
Please retain this installation manual for future reference after reading it thoroughly.

SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USE
The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or incorrect operation of the appliance.

Safety Messages

• This symbol is displayed to indicate matters and operations that can cause risk. Read the part with this symbol carefully and follow the instructions to avoid risk.
• WARNING: This indicates that the failure to follow the instructions can cause serious injury or death.
• CAUTION: This indicates that the failure to follow the instructions can cause minor injury or damage to the product.

Notes for Flammable Refrigerant
The following symbols are displayed on units.

• This symbol indicates that the Installation Manual should be read carefully.
• This symbol indicates that service personnel should be handling this equipment with reference to the Installation Manual.
• This symbol indicates that information is available in the Owner’s Manual or Installation Manual.

WARNING

When Installing

• Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.
  • There is risk of fire or electric shock.
• To install a product, inquire with a service center or an technician.
  • Failure to do so may result in fire, electric shock, or injury.
• To reinstall the product, please inquire with a service center or technician.
  • Failure to do so may result in fire, electric shock, or injury.
• Do not deliberately disassemble, repair, or modify the product.
  • This may be a cause of fire or electric shock.

When Using

• Do not place the product near fire.
  • Doing so may start a fire.
• Do not spill water on the product.
  • Spilling water on this product may result in electric shock or damage to the product.
• Do not cause an impact with the product or kick it with your foot.
  • The impact to the product may cause a product defect.
• Do not put a sharp and pointed object, etc. into a crack or gap.
  • Doing so may result in electric shock or damage to the product.
• Do not create an impact with a sharp and pointed object, etc.
  • The damaged part may cause product damage.
• Do not touch with a wet hand or pull a connecting cable.
  • Product defect and electrical shock may result.
• To install an air conditioner in a closed space, you must ensure ventilation measures.
  • If the concentration becomes high due to a refrigerant leak, you may suffocate due to a lack of oxygen.
• Do not use the product other than for its designated purpose.
  • Product defects may result.
• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children be supervised to ensure that they do not play with the appliance.
• Do not install the unit in potentially explosive atmospheres.

COMPONENTS

Before starting installation, please make it sure that all parts are found inside the product box

INSTALLATION PART

Functions
Sensor Assembly

• LED Displaying Part: Possible to check the LED that displays the state of the internal sensor.
• Detecting Part : Detects the concentration of refrigerant in the air.
• Connecting Cable Connection Port : Combines a cable connected to an indoor unit.

Connecting Cable

• Indoor Unit Connecting Part(Violet) : Connects to the PCB of the indoor unit.
• Sensor Connecting Part(White) :
  Connects to the sensor assembly connecting cable connection port.

Specification

Sensor

Connecting Cable

Sensor Protective Case

REFRIGERANT LEAK DETECTOR

Main Features (Leakage)

1. The refrigerant leak detector detects the concentration of refrigerant (R32) in the air.
2. When the concentration of refrigerant in the air is 5,000 ppm or higher, the wired remote controller displays an error and the sensor issues an alarm so that the user realizes that there is a refrigerant leak.
3. Stop the operation of the relevant indoor unit to minimize the refrigerant leak.
4. The user must vacate and ventilate the area when the refrigerant leak detector issues an alarm.
5. After ventilation, contact the service center.

• When the concentration of the refrigerant becomes high, you may suffocate due to a lack of oxygen.
• Detect for only a refrigerant leak in the room where the product is installed.

Main Features (Malfunction, Lifetime)

1. The R32 refrigerant leak detector determines its malfunction and lifetime.
2. If the sensor is burnt out or its life has expired after a certain period, the LED of the sensor turns on and a buzzer alarm sounds.
3. When such an alarm sounds, the product must be replaced with a new one.

Used time (day) is incremented by one day only when power is continuously supplied more than 24 hours.

• Time precision: ±2%

HOW TO INSTALL

1. Installation Place to Improve Detection Performance

   • Install at a height of 0.3 m off the ground (generally lower than the height of a bed). Because R32 is heavier than air, the refrigerant leak detector must be installed near the floor.
     WARNING: Installation location requirements for separate installation

   • From the floor of the room to the leak detector: 0.3 m or less

   • From the indoor unit to the leak detector

   • Within a horizontal distance of 10 m (if there are no obstacles between the refrigerant sensor and the indoor unit)

   • Within a horizontal distance of 7 m (if there is an obstacle between the refrigerant sensor and the indoor unit)

2. Securing the Installation Location

   • Install with the appropriate connecting cable length to connect from the indoor unit.
   • It must be installed properly to help facilitate servicing.
     NOTE: Do not install a connecting cable that is 30 m or longer. (It may cause a communication failure.)

3. Installation Place to Prevent Wrong Detection
   Other Gas Factors

   • The wrong alarm may go off due to gases other than R32.
   • Gases from ethanol, cigarettes, pesticides, and beauty sprays can cause wrong detection in refrigerant leak detectors.

Environmental Factors

• It must be installed away from a cold wind or a heat source like a radiator.
• Steam sources must be avoided.
• A humid environment or water-prone areas must be avoided.

NOTE

• False detection may occur depending on the installation location of the refrigerant leak detector.
• Places where other gases may be generated: Fruit storage, closed space, and places where exhaust gases are excessively emitted
• Places which are very humid or water prone: restroom, washstand

INSTALLATION ORDER

1. Affix the sensor protective case (backplate) firmly by using the set screws within height of 0.3 m from the floor. <If there are no obstacles between the refrigerant leak detector and the indoor unit : Within a horizontal distance of 10 m>
   <If there is an obstacle between the refrigerant sensor and the indoor unit: Within a horizontal distance of 7 m>
   CAUTION

   • Do not install it around the window or door. When it is installed, the refrigerant leak detector may fail to detect gases.
   • Do not install at a location where an electrical outlet is located. (Due to a gap with the sensor protective case (backplate), the cover may be bent.)

2. The Connecting cable can be installed in any of five directions. Adjust and install it in a suitable direction according to the installation environment.

   • Installation directions: Wall embedded, top right, top left, left and right
   • When installing the connecting cable to the upper, right, or bottom surface, remove the guide grooves from the connecting cable. (*Remove the guide grooves with a long nose plier.)
   • The Connecting Cable housing (white) is connected to the PCB inside the Sensor Assembly.

3. Connect the indoor unit and the sensor by using the connecting cable.
   CAUTION

   • When installing a refrigerant leak detector in the Ceiling Mounted Cassette, Ceiling Concealed Duct, Ceiling Suspended fix the ferrite core with a cable tie to the connecting pipes or DC wire (such as remote controller wire) to prevent movement of the ferrite core.
   • When installing a refrigerant leak detector in the Wall Mounted Unit, fix the body of the ferrite core with a cable tie to the connecting pipes to prevent movement of the ferrite core.
   • Be careful not to damage the connecting pipes insulation when cutting the cable tie.

4. Affix the upper part of the sensor protective cover (front plate) to the sensor protective case (backplate) that is attached to the wall as shown in the figure to the right. Press to combine with the left and right part. Then tighten the screw at the bottom.

5. Assemble all four sides of the sensor protective cases to prevent any gap from
   occurring.
   To remove the sensor protective cover, loosen the screw at the bottom as shown. Press the left and right parts of the sensor protective cover (front plate) and remove the upper part first.

6. If the distance between the refrigerant leak detector and the indoor unit is 10 m or longer, use an extension cable.

   • Do not install a cable that is 30 m or longer. (It may cause communication failure.)

CAUTION: When installing the refrigerant leak detector, do not embed into the wall. Do not install a cable that is 30 m or longer. (It may cause communication failure.)

• To install the extension cable, check the direction of the refrigerant leak detector connected to the indoor unit.
• When the extension cable is connected in reverse, the connector cannot be connected.
• Specification of extension cable: AWG 24, 3 conductor or above. (Contact service center for purchase)

TEST RUN

Pre-check
This is a step to check whether the refrigerant leak detector is properly installed for the test run.

1. Check whether the power is connected.
2. After connecting the power, 7 seconds is the initial sensor startup time.
3. After 7 seconds, ensure that the green LED light turns on.

Checking the refrigerant leak detector setting – Wired Remote Control
This function is used when a refrigerant leak detector is additionally installed in the indoor unit or the installed detector is removed.

< RS2 >

Press and hold button for more than 3 seconds to enter the installer settings mode.
If pressing only once briefly, it will enter the user settings mode. Make sure to press and hold for more than 3 seconds.
Press button repeatedly to move to the Settings for Refrigerant Leak Detector Installation in the menu as below.

Select the code value and set the value for each function using button.

Press button to save the setting.
Press button to exit.

• If no button is selected for about 25 seconds after setup, it exits the setup mode automatically.
• If the K button is not selected before you exit, the changes will not apply.

CAUTION: When non-installation is set, if the refrigerant leaks, no error will be displayed on the wired remote control.

< RS3 >

• In the menu screen, press [<,>(left/right)] button to select the setting category, and press [∧(up)] button for 3 seconds to enter the password input screen for the installer setting.
• Input the password and press [OK] button to move to the installer setting list.

Installer setting password

• Main screen → menu → setting → service → RMC version information → SW Version Example) SW version : 1.00.1 a
• In the above case, the password is 1001.
  • At the Code field, select when refrigerant leakage detection sensor are newly installed to the indoor unit or when an installed it is removed.
  • You can set the following setting values using [<,>(left/right)] button.

Checking the refrigerant leak detector setting – Wireless Remote Control

CAUTION

• The installer setting mode is a mode for setting the detailed features of the indoor unit.
• If the installer setting mode is set incorrectly, a product defect, user injury, or property damage may occur. It must be set only by qualified installation technicians who hold an installation license.
• Any and all problems arising from the installation or arbitrary changes without having such a license are the responsibility of the installer. In this instance, we do not conduct services free of charge.

Checking the refrigerant leak detector setting – Outdoor Unit

Mode Setting Method
A Function to set when a refrigerant leak detector is installed for start up .

: Service only (Clearing Method when CH228, CH229, CH230 occurs)

• Function Number (Fn**).

  • Multi V i : Fn26, Multi V S : Fn11

• Operation Setting

  • oFF : Not available (Default: Refrigerant Leak Detector System will not be operated.)
  • oP1 : Operating Stop
  • oP3 : Branch Pipe Closing & Continuous Operating
    oP1, oP3 are operating options when leakage is detected by the sensor.

• Refrigerant Leak Detector Setting Error(on / of)

• oFF: Normal Condition (No Error)

  • Refrigerant Leak Detector operation is applicable.

• on: Abnormal Condition (Displayed 7- Segment: Error CH230, CH229, CH228)

  • Operation Stops(Unit can’t start up) Until the Error is Cleared(Change to the off)

Leak Check for Refrigerant Leak Detector

1. Have gas enter through the opening of the sensor protective case by using the gas from a gas lighter. (Proceed when the sensor protective case has been assembled.)
   • Until the sensor detects the gas lighter, continue to open the valve of the gas lighter. CAUTION
   • Do not expose the gas lighter to the sensor part for an extended period.(If the gas concentration level becomes very high, the sensor may go out of order).
   • After the test run, the product should be reset to turn off the alarm.
2. When the leak is detected, an alarm is displayed on the refrigerant leak detector and wired remote control.
3. Refrigerant leak detector :

  * The red LED of the Refrigerant leak detector blinks every second.
  * Buzzer alarm.
2. Wired remote control: CH230 displayed  

If no leaks are detected or the sensor is malfunctioning, the following warning will appear:

  1.  **When a leak is not detected:** The green LED always turns on.
  2.  **Malfunction:** The red LED of the Refrigerant leak detector blinks every 10 seconds.
3. Ventilate the surroundings. After changing the outdoor unit function settings, reset the system. (Roughly 30 seconds after shutdown, turn the power on.)  

The alarm cannot be turned off from the Refrigerant leak detector unless the entire system is reset.

How to set the outdoor unit function

1.  DIP switch 5 on.
2. Select “Func”
3. Select “Fn26” (Select “Fn11” for Multi V S)
4. Select “Set”
5. Change from “on” to “of”
6. System reset.

CHECKUP BEFORE REPORTING TROUBLE
If there is any problem with the product, check the following before inquiring with the service centre:

The power is not supplied. (The light of the refrigerant leak detector does not turn on.)

|

Is the air conditioner powered on?

| • Check the circuit breaker.

• Check the state of the installation of the refrigerant leak detector.

Is the connecting cable between the air conditioner and the refrigerant leak detector properly connected?| • Connect the cable between the air conditioner and the refrigerant leak detector.
Are the cables properly connected?| • Check again by referring to how to install in the manual.

Error “CH230” is displayed on the remote control display window and the indoor unit does not run.

| Are the connecting cables properly connected?| • Check again by referring to the order of the installation in the manual.

Does the red LED of the detector blink every 10 seconds?

| • The internal sensor of the refrigerant leak detector is out of order.

• Contact the service center for replacement.

Does the red LED of the detector blink every 1 second?

| • Refrigerant leak is detected.

• Rapidly ventilate and then contact the service center.

Error “CH228” or “CH229”are displayed on the indoor unit and the central controller.

| Are the connecting cables properly connected?| • Check again by referring to the order of the installation in the manual.

Does the red LED of the detector blink every 10 seconds?

| • The internal sensor of the refrigerant leak detector is out of order.

• Contact the service center for replacement.

Does the red LED of the detector blink every 60 seconds?

| • The sensor has reached the end of its life.

• Contact the service center for replacement.

The indoor unit is not operable.

| Are the connecting cables properly connected?| • Check again by referring to the order of the installation in the manual.

Does the red LED of the detector blink every 10 seconds?

| • The internal sensor of the refrigerant leak detector is out of order.

• Contact the service center for replacement.

Does the red LED of the detector blink every 1 second?

| • Refrigerant leak is detected.

• Rapidly ventilate, then contact the service center.

Does the red LED of the detector blink every 60 seconds?

| • The sensor has reached the end of its life.

• Contact the service center for replacement.

The light of the refrigerant leak detector blinks.

|

Does the red LED of the detector blink every 10 seconds?

| • The internal sensor of the refrigerant leak detector is out of order.

• Contact the service center for replacement.

Does the red LED of the detector blink every 1 second?

| • Refrigerant leak is detected.

• Rapidly ventilate, then contact the service center.

Does the red LED of the detector blink every 60 seconds?

| • Refrigerant leak is detected.

• Rapidly ventilate, then contact the service center.

Error Number| Error Description| Meaning| Main Cause
---|---|---|---

228

|

Refrigerant leak detector malfunction error

|

The refrigerant leak detector has failed.

| • The sensor is breaking of short

• Abnormal voltage of DC converter

• Abnormal operation of microprocessor

Troubleshooting

If CH228 occurs even after replacing the Sensor Assembly, check the Main PCBA.

Error Number| Error Description| Meaning| Main Cause
---|---|---|---

229

|

Refrigerant leak detector lifetime error

|

The lifetime of the refrigerant leak detector has reached the end.

| • The lifetime of the refrigerant leak detector has been reached, so replace the sensor assembly.

• Change outdoor unit function settings [SET : on → oFF]

• Outdoor unit function settings

–  Multi V i : Fn26

–  Multi V S : Fn11

Error Number| Error Description| Meaning| Main Cause
---|---|---|---

230

|

Refrigerant leak detection error

| Refrigerant leak detected by refrigerant leak detector.|

• Refrigerant leak detection

NOTE

Check the Normal mode of the refrigerant leak detector.

• Normal mode
  • Green LED is always on.
• Abnormal mode
  • Leak(CH230) : The red LED blinks and the buzzer sounds once a second.
  • Malfunction(CH228) : The red LED blinks and the buzzer sounds every 10 seconds.
  • Lifetime(CH229) : The red LED blinks and the buzzer sounds every 60 seconds.

Representative :

• LG Electronics Inc. Single Point of Contact (EU/UK) :
• LG Electronics European Shared Service Center B.V.
• Krijgsman 1, 1186 DM Amstelveen, The Netherlands

Manufacturer :
LG Electronics Inc.
84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA

UK Importer :
LG Electronics U.K. Ltd
Velocity 2, Brooklands Drive, Weybridge, KT13 0SL

Frequently Asked Questions

• Q: What should I do if I spill water on the product?
  • A: Spilling water on the product may result in electric shock or damage. In case of water spillage, disconnect the product from power immediately and contact authorized personnel for inspection and repair.

References

• LG Electronics & Home Appliances | Shop Now | LG USA

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