Page 1 HM121 / 141 / 161HF UB60 HN1616HC NK0 HM123 / 143 / 163HF UB60 HN1639HC NK0 HM093HFX UB60 HM091 / 071HF UB40 HM093 / 073HF UB40 www.lg.com MFL68681839 Rev.02_071624 Copyright © 2023 - 2024 LG Electronics Inc. All Rights Reserved.
Page 2 TABLE OF CONTENTS TABLE OF CONTENTS SAFETY INSTRUCTIONS............5 READ ALL INSTRUCTIONS BEFORE USE ...........5 Safety Messages ..................5 Notes for Flammable Refrigerant..............6 DELIVERED PARTS ..............20 GENERAL INFORMATION ............22 Model information ..................22 Parts and Dimensions .................23 Control Parts ....................29 Control Panel....................31 Typical Installation Example ................32 Cycle Diagram.....................33 Wiring Diagram ...................35 INSTALLATION OF OUTDOOR UNIT........41...
Page 3 TABLE OF CONTENTS 3rd Party Boiler ...................91 3rd Party Controller ..................92 Meter Interface ...................93 Central Controller ..................95 DHW Tank....................96 DHW Tank Kit .....................99 Solar Thermal Kit..................101 Buffer Tank temperature sensor...............103 Dry Contact ....................104 External Controller - Setting up programmable digital input operation ..106 Remote Temperature Sensor ..............107 Solar pump....................109 External pump...................110...
Page 4 TABLE OF CONTENTS Service - Actuator test - Pump test ............171 Service - Actuator test - Valve test............171 Service - Frost protection temperature .............172 Connectivity - Modbus address(HEX) ............173 Connectivity - CN_EXT ................177 Connectivity - 3rd party boiler ..............178 Connectivity - Energy state ...............179 COMMISSIONING..............180 Check List before Starting Operation............180 Starting Operation..................182...
Page 5 SAFETY INSTRUCTIONS 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.
Page 6 SAFETY INSTRUCTIONS Notes for Flammable Refrigerant The following symbols are displayed on units. This symbol indicates that this appliance uses a flammable refrigerant. If the refrigerant is leaked and exposed to an external ignition source, there is a risk of fire. This symbol indicates that the Installation Manual should be read carefully.
Page 7 SAFETY INSTRUCTIONS • Use the correctly rated breaker or fuse. - There is risk of fire or electric. • Do not modify or extend the power cable. - There is risk of fire or electric shock. • Do not install, remove, change, inspection and maintenance, repair or reinstall the unit by yourself (customer).
Page 8 SAFETY INSTRUCTIONS • Copper in contact with refrigerants shall be oxygen-free or deoxidized, for example Cu-DHP as specified in EN 12735-1 and EN 12735-2. • Compliance with national gas regulations shall be observed. • Refrigerant tubing shall be protected or enclosed to avoid damage. •...
Page 9 SAFETY INSTRUCTIONS • Make sure to install necessary safety devices. • Do not let refrigerant enter the sewage system. • Pipe-work shall be protected from physical damage. • Mechanical connections (mechanical connectors or flared joints) shall be accessible for maintenance purposes. •...
Page 10 SAFETY INSTRUCTIONS • When flammable gas leaks, turn off the gas and open a window for ventilation before turning the unit on. - There is risk of explosion or fire. • If strange sounds, or smell or smoke comes from unit, turn the breaker off or disconnect the power supply cable.
Page 11 SAFETY INSTRUCTIONS • Be careful that some part of the control box are hot. - There is risk of physical injury or burns. • When the unit is soaked (flooded or submerged), contact an Authorized Service Center. - There is risk of fire or electric shock. •...
Page 12 SAFETY INSTRUCTIONS • Store away from oxidizing gases and other oxidizing materials. • The outdoor unit shall be stored in a space(especially safety zone) without continuously operating open flames (for example an operating gas appliance) and ignition sources (for example an operating electric heater).
Page 13 SAFETY INSTRUCTIONS Leak detection methods The following leak detection methods are deemed acceptable for systems containing flammable refrigerants. Electronic leak detectors shall be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.) Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used.
Page 14 SAFETY INSTRUCTIONS Removal and evacuation When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, for flammable refrigerants it is important that best practice is followed since flammability is a consideration. The following procedure shall be adhered to: Remove refrigerant;...
Page 15 SAFETY INSTRUCTIONS The electronic leak detector can be used to check at the end of the hose if any refrigerant is coming out. If the electronic leak detector shows 0 PPM the flow of N2 or CO2 can be stopped and outlet of hose needs to be rechecked if the value at the end of the hose rises above 0 PPM.
Page 16 SAFETY INSTRUCTIONS Recovery When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely. For recovery during service comply to the removal and evacuation paragraph. When decommissioning the unit containing natural refrigerants (non F-gas), no refrigerant needs to be evacuated into a cylinder and all refrigerant can be expelled wth N2 or flushed with CO2.
Page 17 SAFETY INSTRUCTIONS CAUTION Installation • Keep level even when installing the unit. - To avoid vibration or water leakage. • Use two or more people to lift and transport the unit. - Avoid personal injury. • Do not install the unit in potentially explosive atmospheres. •...
Page 18 SAFETY INSTRUCTIONS Safety when installing the product • Any air vent located inside occupied space must be closed after air was released. Automatic air vents must be closed with a cap. If leaked refrigerant enters the water cycle, the gas shall not be automatically released into the occupied space.
Page 19 SAFETY INSTRUCTIONS • Do not step on or put anything on the unit. - There is risk of personal injury and failure of unit. • Use a firm stool or ladder when cleaning or maintaining the unit. - Be careful and avoid personal injury. •...
Page 20 DELIVERED PARTS DELIVERED PARTS Before starting installation, please make it sure that all parts are found inside the product box. INDOOR UNIT BOX Item Image Quantity Item Image Quantity Installation Manual Indoor unit (1Sheet) Owner's / Installation manual Installation Sheet (Simple) Adaptable Cable OUTDOOR UNIT BOX...
Page 21 DELIVERED PARTS INSTALLATION TOOLS Figure Name Figure Name Screw driver Ohmmeter Electric drill Ammeter Leak detector Measuring tape, Knife (Suitable for R290) Thermometer, Hole core drill Horizontal meter Spanner Pliers Torque wrench Fire extinguisher...
Page 22 GENERAL INFORMATION Model information Additional information about all possible combinations including Energy labels and ErP datasheets can be found on following website: https://www.lg.com/global/support/cedoc/cedoc NOTE Search for outdoor unit's model name on that website. Operating condition - Maximum operating temperature of water : 75 °C - Minimum operating temperature of water : 15 °C...
Page 23 GENERAL INFORMATION Parts and Dimensions Indoor unit : External (Unit : mm) * The feature may be vary according to the type of model. Description Name Remark Control Panel Built-in Remote Controller...
Page 24 GENERAL INFORMATION Indoor unit : Internal (Unit : mm) 301.2 84.5 81.2 Description Name Remark Leaving Water Pipe Male PT 1 inch Entering Water Pipe Male PT 1 inch Control Box PCB and terminal blocks Expansion Tank Absorbing Volume change of heated water Air Vent Air Pumping when Charging water Backup heater...
Page 25 GENERAL INFORMATION Outdoor unit : External [UN36B] (Unit : mm) 4-holes for anchor bolts (M10) Description Name Entering Water Pipe (Male PT 1 inch) Leaving Water Pipe (Male PT 1 inch) Air discharge Grille Cable Conduit (Power) Cable conduit (Communication)
Page 26 GENERAL INFORMATION Outdoor unit : External [UN60B] (Unit : mm) 6-holes for anchor bolts (M10) 231.3 717.4 231.3 1561 Description Name Entering Water Pipe (Male PT 1 inch) Leaving Water Pipe (Male PT 1 inch) Air discharge Grille Cable Conduit (Power) Cable conduit (Communication)
Page 27 GENERAL INFORMATION Outdoor unit : Internal [UN36B] (Unit : mm) 4-holes for anchor Holes for Downward connection. bolts (M10) NOTE: Before piping, remove the cover brackets Drain holes closed with caps (7 EA) NOTE: If you need more drains, remove them Description Name Remark...
Page 28 GENERAL INFORMATION Outdoor unit : Internal [UN60B] (Unit : mm) 6-holes for anchor Holes for Downward connection. bolts (M10) NOTE: Before piping, remove the cover brackets Drain holes closed with caps (7 EA) NOTE: If you need more drains, remove them Description Name Remark...
Page 29 GENERAL INFORMATION Control Parts Control Box : Indoor Unit 1Ø Electric Heater Model Description Name Remark Terminal blocks The terminal blocks allow easy connection of field wiring Unit Earth-leakage The ELB protects the unit against overload or short circuit breaker Heater PCB(Printed Circuit Board) controls the functioning of Heater PCB the backup heater...
Page 30 GENERAL INFORMATION 3Ø Electric Heater Model Description Name Remark Terminal blocks The terminal blocks allow easy connection of field wiring Unit Earth-leakage The ELB protects the unit against overload or short circuit breaker Magnet switch Magnet switch controls the functioning of the backup heater The main PCB(Printed Circuit Board) controls the functioning Main PCB of the unit and the connected accessories...
Page 31 GENERAL INFORMATION Control Panel Operation display window Back button On/Off Button OK Button Up/Down/Left/Right Button Operation display window - Operation and Settings status display - Home screen: Show 'Monitoring screen' Back button - Other cases: Move to previous stage - Navigate within menu and setting options Up/down/left/right button - Change values - Enter menu...
Page 32 Pressure Reducing Drain Drain Pan Cover Plate Valve Manual air vent ※ For more installation scenes, visit http://partner.lge.com/ or contact your local LG office. Select Region → Doc. Library → (Product) Heating → Application Guide → Referenced Drawing for Application...
Page 33 GENERAL INFORMATION Cycle Diagram [UN36B] : Heating inlet : Cooling <Water Side> : Heating outlet <Refrigerant Side> : Heating <Outdoor Unit> <Indoor Unit> 4 Way V/V Air Vent Port Pressure Sensor Pressure Switch Check V/V Expansion Vessel Heat Sink Pressure Sensor SVC Port EEV1...
Page 34 GENERAL INFORMATION [UN60B] : Heating inlet : Cooling <Water Side> : Heating outlet <Refrigerant Side> : Heating <Outdoor Unit> <Indoor Unit> SVC Port Air Vent 4 Way V/V Pressure Sensor Pressure Port Switch Check V/V Expansion Vessel Heat Sink Pressure Sensor EEV1 EEV2...
Page 35 GENERAL INFORMATION Wiring Diagram Indoor Unit : 1 Phase(Ø)
Page 36 GENERAL INFORMATION Indoor Unit : 3 Phase(Ø)
Page 37 GENERAL INFORMATION Outdoor Unit : 1 Phase(Ø) [UN36B]...
Page 38 GENERAL INFORMATION Outdoor Unit : 3 Phase(Ø) [UN36B]...
Page 39 GENERAL INFORMATION Outdoor Unit : 1 Phase(Ø) [UN60B]...
Page 40 GENERAL INFORMATION Outdoor Unit : 3 Phase(Ø) [UN60B]...
Page 41 INSTALLATION OF OUTDOOR UNIT INSTALLATION OF OUTDOOR UNIT The outdoor unit is installed outside to exchange heat with ambient air. Therefore, it is important to secure proper space around the outdoor unit and care for specific external conditions. This chapter presents a guide to install the outdoor unit, make a route to connect with the indoor, and what to do when installed around seaside.
Page 42 INSTALLATION OF OUTDOOR UNIT Minimum Operation Space Following distances around the outdoor unit must be respected under any condition for normal operation. The distances are only for operation not to be seen as safety zone. Installation space around each unit Multiple installation 0.5 m 0.6 m...
Page 43 INSTALLATION OF OUTDOOR UNIT Safety Zone Since the outdoor unit contains flammable refrigerant, a separate safety zone must be defined near the outdoor unit. CAUTION Be very careful for Safety Zone • There must be no building openings. (windows, doors, roof windows, etc.) •...
Page 44 INSTALLATION OF OUTDOOR UNIT Ground installation in a corner with wall at the left side (Unit : mm) 1 000 1 800 Ground installation in a corner with wall at the right side (Unit : mm) 1 000 1 800 ※...
Page 45 INSTALLATION OF OUTDOOR UNIT Installation at Seaside CAUTION • Unit should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced. • Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result corrosion on the product.
Page 46 INSTALLATION OF OUTDOOR UNIT Seasonal wind and cautions in winter - Sufficient measures are required in a snow area or severe cold area in winter so that product can be operated well. - Get ready for seasonal wind or snow in winter even in other areas. - Install a suction and discharge duct not to let in snow or rain.
Page 47 INSTALLATION OF OUTDOOR UNIT Transporting the Unit - When carrying the suspended unit, pass the ropes between legs of base panel under the unit. - Always lift the unit with ropes attached at four points so that impact is not applied to the unit. - Attach the ropes to the unit at an angle Ⓐ...
Page 48 INSTALLATION OF OUTDOOR UNIT CAUTION Be very careful while carrying the product. • Do not have only one person carry product if it is more than 20 kg. • PP bands are used to pack some products. Do not use them as a mean for transportation because they are dangerous.
Page 49 INSTALLATION OF OUTDOOR UNIT Foundation for Installation - Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installation. - Fix the unit securely by means of the foundation bolts. Prepare 6 sets(4 sets) of M12 foundation bolts, nuts and washers available on the market.
Page 50 INSTALLATION OF OUTDOOR UNIT Section of condensate drain pipe exposed to open air must be insulated. If condensate is drained into a gravel-bed, the pipe must be directed into frost-free area. The gravel must be able to absorb up to 100 l of condensate per day. If condensate water is drained into a rainwater sewer or other drainage pipe, note the slope of the pipe and make sure the pipe is frost-free.
Page 51 INSTALLATION OF INDOOR UNIT INSTALLATION OF INDOOR UNIT The indoor unit should be installed in a room that allows easy access to outdoor unit and heating system both. In this chapter conditions for installation place is described. In addition, considerations when installing accessories or 3rd party accessories are described, too.
Page 52 INSTALLATION OF INDOOR UNIT Mounting to Wall Step 1. Disconnect the remote control case from the front panel and disconnect the remote control cable. CAUTION After installation is completed, return the remote control to its original state. NOTE Use a flat-blade screwdriver or a coin to remove the remote control case. Step 2.
Page 53 INSTALLATION OF INDOOR UNIT Step 4. Detach the Installation sheet. Screw bolts at the hole marks on the wall. When screwing bolts, use M8 ~ M11 anchor bolts to secure hanging the indoor unit. NOTE Self drilling screw can be used as alternatives of M8 ~ M11 anchor bolts. But M8 ~ M11 anchor bolts are more preferred.
Page 54 ELECTRICAL WIRING ELECTRICAL WIRING General considerations and warnings - Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company. WARNING • Be sure to have authorized electrical engineers do the electric work using special circuits in accordance with regulations and this installation manual.
Page 55 ELECTRICAL WIRING General Consideration Followings are should be considered before beginning indoor unit wiring. - Field-supplied electrical components such as power switches, circuit breakers, wires, terminal boxes, etc should be properly chosen with compliance with national electrical legislation or regulation. - Make it sure that supplied electricity is enough to operate the product including outdoor unit, electric heater, water tank heater, etc.
Page 56 Ssc greater than or equal to 1339 kVA. This equipment complies with IEC (EN) 61000-3-3. The Outdoor unit (HM161HF UB60, HM141HF UB60, HM121HF UB60) This equipment complies with IEC (EN) 61000-3-12 in harmonic currents emission limits corresponding Rsce =33.
Page 57 ELECTRICAL WIRING CAUTION After checking and confirming following conditions, start wiring work. • Secure dedicated power source for the Air-to-Water heat pump. The wiring diagram (attached inside the control box of the unit) is presenting related information. • Provide a circuit breaker switch between power source and the outdoor unit. •...
Page 58 ELECTRICAL WIRING Precautions when laying power wiring Use round pressure terminals for connections to the power terminal block. Power wire Round pressure terminal When none are available, follow the instructions below. - Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power wiring may cause abnormal heat.) - When connecting wiring which is the same thickness, do as shown in the figure below.
Page 59 ELECTRICAL WIRING Perform the electrical wiring work according to the electrical wiring connection. - All wiring must comply with local requirements. - Select a power source that is capable of supplying the current required by the unit. - Use a recognized ELCB(Electric Leakage Circuit Breaker) between the power source and the unit.
Page 60 ELECTRICAL WIRING Speciﬁcation of wires and circuit breakers Model name Max. Circuit Power cable Power supply Cable spec (Buyer) current breaker (incl. Earth) HM163HF 380-415V 50 Hz 16.1 A 16 A 2.5 mm x 5C H07RN-F HM143HF 380-415V 50 Hz 16.1 A 16 A 2.5 mm...
Page 61 ELECTRICAL WIRING Electrical connections at outdoor unit [UN36B] Step 1. Disassemble Side panel and cover of control box from the outdoor unit 1 Phase(Ø), 3 Phase(Ø) Power Terminal Block Cable Conduit (Communication) Cable Conduit (Power) Step 2. Connect power cable to main Power terminal The earth cable is connected to the Control box case where earth symbol is marked.
Page 62 ELECTRICAL WIRING 3 Phase(Ø) Communication cable Outdoor Unit Power Cable Conduit (Communication) Cable Conduit (Power) Failure to do these instruction can result in fire, electric shock or death. • Make sure the power cable do not touch to copper tube. •...
Page 63 ELECTRICAL WIRING [UN60B] Step 1. Disassemble Side panel and cover of control box from the outdoor unit 1 Phase(Ø), 3 Phase(Ø) Power Terminal Block Cable Conduit (Communication) Cable Conduit (Power) Step 2. Connect power cable to main Power terminal The earth cable is connected to the Control box case where earth symbol is marked.
Page 64 ELECTRICAL WIRING 3 Phase(Ø) Communication cable Outdoor Unit Power Cable Conduit (Communication) Cable Conduit (Power) Failure to do these instruction can result in fire, electric shock or death. • Make sure the power cable do not touch to copper tube. •...
Page 65 ELECTRICAL WIRING Terminal Block Information Symbols used below pictures are as follows : - L, L1, L2 : Live (230 V AC) - N : Neutral (230 V AC) - BR : Brown, WH : White, BL : Blue, BK : Black 3 Phase(Ø) 1 Phase(Ø) Terminal Block 4...
Page 66 ELECTRICAL WIRING 1 Phase(Ø) Communication cable (28) (29) Main PCB terminal block at outdoor unit IDU B IDU A Power supply indoor unit External power supply (same dedicated power 18 (L) 19 (N) supply for the indoor unit and outdoor unit) Power supply Backup heater and Boost heater (optional) 1(L) 2(N) 3(L) 4(N) External power supply...
Page 67 ELECTRICAL WIRING 3 Phase(Ø) Communication cable (28) (29) Main PCB terminal block at outdoor unit IDU B IDU A Power supply indoor unit External power supply (same dedicated power 18 (L) 19 (N) supply for the indoor unit and outdoor unit) Power supply Backup heater and Boost heater (optional) 1(R) 2(S) 3(T) 5(L)
Page 68 WATER PIPING WATER PIPING Procedures about water piping and electric wiring at the indoor unit are described in this chapter. Water piping and water circuit connection, water charging, pipe insulations will be shown for water piping procedures. For wiring, terminal block connection, connecting with the outdoor unit, electric heater wiring will be introduced.
Page 69 WATER PIPING While connecting water pipes, followings should be considered. - Pipe fittings (e.g. L-shape elbow, T-shape tee, diameter reducer, etc) should be tightened strongly to be free from water leakage. - Connected sections should be leakage-proof treatment by applying teflon tape, rubber bushing, sealant solution, etc.
Page 70 WATER PIPING How to install downward water piping [UN36B] 1. Remove 2 existing rubber pipes Existing rubber pipes 2. Change direction of 2 brass connectors 3. Install the delivered rubber pipes kit Delivered parts WARNING Do not forget to use delivered clamps to fix rubber pipes, Otherwise water leakage may occur. NOTE When the work is completed, move 2 brackets from the base pan to the rear panel and screw them.
Page 71 WATER PIPING [UN60B] 1. Remove 2 existing rubber pipes Existing rubber pipes 2. Change direction of 2 brass connectors 3. Install the delivered rubber pipes kit Delivered parts WARNING Do not forget to use delivered clamps to fix rubber pipes, Otherwise water leakage may occur. NOTE When the work is completed, move 2 brackets from the base pan to the rear panel and screw them.
Page 72 WATER PIPING Water Charging For water charging, please follow below procedures. Step 1. Open all valves of whole water circuit. Supplied water should be charged not only inside the indoor unit, but also in the under floor water circuit, sanitary water tank circuit, FCU water circuit, and any other water circuits controlled by the product.
Page 73 WATER PIPING Pipe Insulation Purpose of water pipe insulation is : - To prevent heat loss to external environment - To prevent dew generation on the surface of the pipe in cooling operation - Minimum insulation thickness recommendations ensure correct operation of the product, but local regulations may vary and must be followed. - If cooling function is used, the type of insulation must be suited for cold water and all joints must be sealed tightly to prevent that the insulation becomes wet from the inside.
Page 74 WATER PIPING Water pump Capacity The water pump is variable type which is capable to change flow rate, so it may be required to change default water pump capacity in case of noise by water flow. In most case, however, it is strongly recommended to set capacity as Maximum.
Page 75 WATER PIPING Performance curve GRUNDFOS Water Pump : UPM3K GEO 20 – 75 CHBL Q-H Chart 8.00 7.00 6.00 5.00 4.00 3.00 2.00 0.00 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 Q [m3/h] GRUNDFOS Water Pump : UPML GEO 20 – 105 CHBL Q-H Chart 100% Q [LPM]...
Page 76 WATER PIPING OH SUNG Water Pump : ODM-061P Q-H Chart 100% Q [LPM] Performance test based on standard ISO 9906 with pre-pressure 2.0 bar and liquid temperature 20 °C. WARNING • If pressure drop is higher than what the pump can cover, the flow rate will drop and low-flow error (CH14) will occur.
Page 77 WATER PIPING Water Quality Water quality should be complied with EN 98/83 EC Directives. Detailed water quality condition can be found in EN 98/83 EC Directives. CAUTION • If the product is installed at existing hydraulic water loop, it is important to clean hydraulic pipes to remove sludge and scale.
Page 78 WATER PIPING Frost protection by antifreeze valve About antifreeze valve This is a valve to prevent freeze in winter. When no antifreeze is added to the water, you can use antifreeze valves at all lowest points of the field piping to drain the water from the system before it can freeze To install antifreeze valve To protect the field piping against freezing, install the following parts:...
Page 79 WATER PIPING NOTE • Do not make any trap connections. If the shape of the connection pipe has the potential to create a trap effect, part of the pipe will not be able to drain and frost protection will no longer be guaranteed.
Page 80 WATER PIPING Water Volume and Expansion Vessel Pressure Inside expansion vessel is included which is 8 liter capacity with 1 bar pre-pressure. That means, according to the volume-pressure graph, total water volume of 230 liter is supported as default. If total water volume is changed because of installation condition, the pre-pressure should be adjusted to secure proper operation.
Page 81 In this chapter, specifications about supported 3rd party accessories and how to connect to this product is introduced. It is noted that this chapter only deal with 3rd party accessories. For accessories supported by LG Electronics, please refer to installation manual of each accessories.
Page 82 ACCESSORIES INSTALLATION Item Purpose Model To control Automatically operation with more accurate outdoor temperature Wall-mounted outdoor air PHATS0 The basic outdoor temperature temp. sensor sensor is located in the back of ODU. It is especially affected by sunlight during the day. Cloud Gateway To use Becon cloud PWFMDB200...
Page 83 ACCESSORIES INSTALLATION CAUTION • Install the drain pan when cooling. • If not installed, water may form. • Please refer to separate installation manual when installing drain pan. Accessories supported by 3rd party Companies Item Purpose Specification • Solar collector To generate auxiliary heating Solar Heating System •...
Page 84 ACCESSORIES INSTALLATION Before Installation WARNING Followings should be kept before installation • Main power must be turned off during installing accessories. • 3rd party accessories should be comply with supported specification. • Proper tools should be chosen for installation. • Never do installation with wet hands. Thermostat Thermostat is generally used to control the product by air temperature.
Page 85 ACCESSORIES INSTALLATION General Information The Heat Pump supports following thermostats. Type Power Operating Mode Supported Heating Only (3) Mechanical 230 V~ Heating / Cooling (4) Heating / Cooling / DHW Heating (5) Heating Only (3) Electrical 230 V~ Heating / Cooling (4) Heating / Cooling / DHW Heating (5) (1) There is no electric circuit inside the thermostat and electric power supply to the thermostat is not required.
Page 86 ACCESSORIES INSTALLATION How to wire Heating / Cooling / DHW Heating thermostat Follow below procedures Step 1 ~ Step 3. Step 1. Uncover front cover of the unit and open the control box. Step 2. Identify the power specification of the thermostat. If it is 220-240 V~, go to Step 3. Step 3.
Page 87 ACCESSORIES INSTALLATION Final check DIP switch setting : - Set DIP switch No. 8 to ‘ON’. Otherwise, the unit can not recognize the thermostat. Remote Controller : - ‘Thermostat’ text is displayed on the remote controller. - Only the water temperature setting is available and the other button input is prohibited. - In case of Heating / Cooling / DHW Heating thermostat, select ‘Heat&Cool / DHW' as the Thermostat Control Type in the remote controller installer settings.
Page 88 ACCESSORIES INSTALLATION Circuit The 2 circuit is a function that can separately control the circuit1 requiring high temperature and the circuit 2 requiring medium temperature, you need to prepare a separate Mix Kit. The mix kit must be installed in the circuit 2. [Install Guide Mixing circuit Heating] Circuit 2 Convector...
Page 89 [Circuit 1] Direct Circuit Radiator Radiator NOTE • The location of the external pump may vary depending on the installer settings. • Temperature sensor specification: LG-accessory PRSTAT5K10 at 25 °C : 5 kΩ Minimum operating temperature range : -30 °C~100 °C...
Page 90 ACCESSORIES INSTALLATION [Thermistor for Mixing circuit] Sensor Sensor Holder Sensor Connector Follow below procedures step 1 ~ step 4. Step 1. Install sensor connector to discharge pipe of mix pump. (Welding must be performed to connect the sensor connector to the pipe) Step 2.
Page 91 ACCESSORIES INSTALLATION Party Boiler The product can be used by connecting an Auxiliary boiler. 3rd party boiler can be enabled/disabled by manually via remote controller or automatically itself by means of comparing the outside air temperature and the pre-set temperature. Only Bivalent- alternative operation is possible.
Page 92 Step 4. Connect the 3rd party controller to terminal block 2(21/22) completely. CN_MODBUS TB 2 PARTY CONTROLLER (DC 5 V) PARTY CONTROLLER or METER INTERFACE(LG) Indoor PCB NOTE • If CN_MODBUS port is used to interlink with LG metering module, a 3rd-party controller cannot be connected at the same time.
Page 93 ACCESSORIES INSTALLATION Meter Interface This accessory (PENKTH000) can be used to connect 3rd-party wattmeter (max. 3) using pulse input or Modbus and one heatmeter using pulse input. The consumed electric power and/or produced thermal energy is displayed on the remote controller.
Page 94 ACCESSORIES INSTALLATION [Parts of Meter interface] Meter interface body Follow below procedures step 1 ~ step 4. Step 1. Check if the power of the unit is turned off. Step 2. Disassemble front panels and Distinguish control box(Indoor) of the unit. Step 3.
Page 95 Step 3. Access and Device Registration Log in to central controller and register device with address set. Consult a qualified engineer/ technician for the installation of central controller. If you have any installation queries, contact the LG service center or LG Electronics.
Page 96 ※ For detailed connection refer to manufacturer's manual of the DHW tank. WARNING The schematic does not include all necessary safety devices. For details refer to Hydronic schemes provides by local LG office. General Information supports following 3way valve. Type...
Page 97 PUMP Cold water Space heating ※ Water In / Water Out installation scene may vary depending on the model. WARNING The schematic does not include all necessary safety devices. For details refer to Hydronic schemes provides by local LG office.
Page 98 ACCESSORIES INSTALLATION How to wire recirculation pump Follow below procedures step 1 ~ step 4. Step 1. Check if the power of the unit is turned off. Step 2. Disassemble front panels and distinguish control box(Indoor) of the unit. Step 3. Check if the harness(Violet) is inserted fully to the indoor unit PCB (CN_PUMP_A15). Step 4.
Page 99 ACCESSORIES INSTALLATION DHW Tank Kit This accessory (PHLTA/PHLTC) is used to connect a DHW boost heater. The kit consists of earth- leakage breaker, circuit breaker and internal wires. It also includes the DHW thermistor. How to install DHW tank kit [Parts of DHW Tank Kit] PHLTA / PHLTC Sensor...
Page 100 ACCESSORIES INSTALLATION How to wire DHW boost heater If LG tank [OSHW-x00F(D)] is used, a Boost heater is included in the tank. Step 1. Open the cover at side of tank. Step 2. Find terminal block and connect wires as below. Wires are field-supplied item.
Page 101 This product can be used by connecting the solar thermal kit in the field. It can be utilized hot water heated by solar thermal system. End-user must be install solar thermal kit accessory(PHLLA) provided by LG. How to Install Solar Thermal Kit...
Page 102 ACCESSORIES INSTALLATION PT1000 (3rd-party) SOLAR TEMP. SOLAR THERMAL COLLECTOR SENSOR SOLAR PUMP DHW TANK WATER THERMOSTATIC TB_SENSOR_SOLAR MIXING VALVE DHW TANK (MANDATORY) SENSOR (A) TB1 5 / 6 THERMA CN_TH4 TB1 12 / 13 / 14 DHW TANK CITY WATER BOTTOM SUPPLY SENSOR (B)
Page 103 ACCESSORIES INSTALLATION Buffer Tank temperature sensor If a big buffer tank is connected in parallel to the heat pump, a separate sensor can be connected to PCB-connector TB_SENSOR/BUFFER. It can be sensing the temperature at the top of the tank or at its outlet pipe. Consequently, the desired target water temperature (as set by User or defined by weather- dependent function) is compared to the buffer tank temperature.
Page 104 ACCESSORIES INSTALLATION Dry Contact Dry Contact is a solution for automatic control of HVAC system at the owner's best. In simple words, it's a switch which can be used to turn the unit On/Off after getting the signal from external sources. How to install dry contact [Parts of Dry contact] Dry Contact body...
Page 105 ACCESSORIES INSTALLATION [Setting of Contact Signal Input] • For input contact closure only(No power input) Thermostat LG does not supply this section (Field supply) NOTE Do not input the voltage signal in "NON VOLT" setting mode otherwise it will cause serious damage •...
Page 106 ACCESSORIES INSTALLATION External Controller - Setting up programmable digital input operation If you require to control depending on external digital input(ON/OFF), connect cable to indoor PCB(CN_EXT). Follow below procedures step 1 ~ step 4. Step 1. Check if the power of the unit is turned off. Step 2.
Page 107 ACCESSORIES INSTALLATION Remote Temperature Sensor Remote temperature sensor can be installed any place a user wants to detect the temperature. Installation condition Role and constraint while installation of remote air temperature sensor is very similar to that of thermostat. • Distance between the unit and the remote air temperature sensor should be less than 15 m due to length of the connection cable of remote air temperature sensor.
Page 108 ACCESSORIES INSTALLATION How to Install Remote Temperature Sensor [Parts of Remote Temperature Sensor] Cable Screw(to fix remote sensor) Installation Manual Follow below procedures step 1 ~ step 5. Step 1. Decide where the remote temperature sensor is Installed. Then, Determine the location and height of the fixing screws in fig.
Page 109 ACCESSORIES INSTALLATION Solar pump Solar pump can be required to energize water flow when solar thermal system is installed. How to wire solar pump Follow below procedures step 1 ~ step 4. Step 1. Check if the power of the unit is turned off. Step 2.
Page 110 ACCESSORIES INSTALLATION External pump External pump (3rd-party) can be utilized if internal pump cannot overcome system pressure losses; if secondary pump is needed (in case parallel buffer tank) or - if two heating circuits are needed - as circuit pump to feed the radiator circuit. How to wire external pump Follow below procedures step 1 ~ step 3.
Page 111 ACCESSORIES INSTALLATION Wi-Fi Modem Wi-fi modem enables remote system operation from smartphone. Available functions include selection of on/off, operation mode, DHW heating, temperature setup and weekly scheduling etc. For detailed instructions, refer to the manual included in the accessories. How to wire Wi-Fi Modem [Parts of Wi-Fi modem] Wi-Fi modem body USB Cable...
Page 112 ACCESSORIES INSTALLATION Energy State This product provides energy states that enable customers to use as much as possible of their own renewable energy. It can shift setpoints depending on input signal from Energy Storage System (ESS) or from any other third-party device using Modbus RTU or Digital 230V inputs. Available Energy States There are 8 energy states available.
Page 113 ACCESSORIES INSTALLATION Digital Input for energy saving (ESS, Smart Grid) This product provides two digital inputs (TB_SG:ES1/ES2) that can be used to switch between energy states when not using Modbus RTU (CN-COM). Available Energy States There are 8 energy states available in total. Four different states can be triggered using the 230V-inputs –...
Page 114 ACCESSORIES INSTALLATION 2Way Valve 2way valve is required to control water flow while cooling operation. Role of 2way valve is to cut off water flow into under floor loop in cooling mode when fan coil unit is equipped for cooling operation. General Information supports following 2way valve.
Page 115 ACCESSORIES INSTALLATION 3Way Valve(A) 3Way Valve(A) is required to operate DHW water tank. Role of 3way valve is flow switching between space heating circuit and water tank heating loop. General Information supports following 3way valve. Type Power Operating Mode Supported Selecting Flow A between Flow A and Flow B SPDT...
Page 116 ACCESSORIES INSTALLATION Wall-mounted air sensor Wall-mounted air sensor is highly recommended when the outdoor unit is excessively exposed to sunlight. It is used for weather-dependent operation (Auto mode). How to wire Wall-mounted air sensor [Parts of Wall-mounted air sensor] Wall-mounted air sensor Installation Manual External Cable * It is not provided.
Page 117 ACCESSORIES INSTALLATION Final check Check point Description - Check if the shut-off valves should be assembled with Connection of Water Water inlet and outlet pipe of the unit Inlet/Outlet - Check the location of the water inlet/outlet water pipe - Check the pressure of supplying water by using pressure gauge inside the unit (Monitoring screen).
Page 118 CONFIGURATION CONFIGURATION is designed to satisfy various installation environment, it is important to set up system correctly. If not configured correctly, improper operation or degrade of performance can be expected. DIP Switch Setting CAUTION Turn off electric power supply before setting DIP switch •...
Page 119 CONFIGURATION DIP Switch Information Option Switch 1 Description Setting Default As Master (LG extension modules) MODBUS Communication Type As Slave (3rd party controller) Unified Open Protocol MODBUS Function No function RS-485(EIA-485) method, Flat (9600bps / TLV) Communication Outdoor Indoor Unit ↔...
Page 120 CONFIGURATION Option Switch 2 Description Setting Default Heat pump is installed (Heating (Cooling) circuit only) Accessory installation Heat pump information + DHW tank is installed Heat pump + DHW tank + Solar thermal system is installed Heating Only Cycle Heating & Cooling Electric heater is not used Half capacity is used Selecting Backup heater...
Page 121 CONFIGURATION Outdoor PCB SW1G OFF is selected ON is selected...
Page 122 ※ When setting the limited low noise mode, Mode can be exited to secure capacity after operating for a certain time. ※ In the site with external pump, it is recommended to disable the hot gas defrost mode. ※ Peak Control Step 3&4: Please contact LG Service for details.
Page 123 CONFIGURATION NOTE Input current value can be limited by DIP Switch operation. Model Name Peak Control Mode Running Current (A) Chassis Phase (Ø) Capacity (kW) 1 Step 2 Step UN36B UN60B...
Page 124 SERVICE SETTING SERVICE SETTING How to enter service setting To enter the menu displayed at the bottom, you need to enter the service setting menu as follows. • In the menu screen, press [<,>(left/right)] button to select the setting category, and press [OK] button to move to the setting list.
Page 125 SERVICE SETTING Service contact Check and input the service center phone number that the user can call when there is service issue. • In the service setting list, select the service contact point and press [OK] button to move to the detail screen.
Page 126 It must be set by the installation specialist with the installation license, and if it is installed or changed without installation license, all problems caused will be the responsibility of the installer, and may void the LG warranty. • In the menu screen, press [<,>(left/right)] button to select the setting category, and press [ ∧...
Page 127 INSTALLER SETTING Installer setting • You can set the product user functions. • Some functions may not be displayed/operated in some product types.
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Page 150 Weather-dependent (Auto mode) or Fixed target (Heat/Cool mode) are possible. If this control method is chosen, LG room air temperature sensor(s) or LG remote controller must be placed inside reference room(s). The Inverter cycle will be controlled directly by...
Page 151 The possible options depend on setting ‘Control method’. The devices must be placed in suitable reference rooms. Refer to chapter ‘Accessories installation’. If LG room sensors are used, the sensor controlling Circuit 1 (Direct circuit) must be connected to CN_ROOM and the sensor controlling Circuit 2 (Mixing circuit) to CN_ROOM2.
Page 152 INSTALLER SETTING Example 2) - RS3(A) is used to control both levels (upstairs/radiators & downstairs/underfloor heating) including Installer settings. This Remote controller is also used to sense the room temperature of the ground floor (Mixing circuit). Settings on RS3(A): Configuration - Control method: Air+Water Configuration - Select room devices - RMC linked to: Circuit1&2 Configuration - Select room devices - Circuit 1 - Room air sensor option: Remote controller Configuration - Select room devices - Circuit 2 - Room air sensor option: Remote controller...
Page 153 INSTALLER SETTING Example 3) Configuration - Control method: Water Configuration - Select room devices - RMC linked to: Circuit1&2 Configuration - Select room devices - Circuit 1 - Digital input - CN-THMO Configuration - Select room devices - Circuit 2 - Digital input - CN-CC CN-THMO1 (TB3:23-27) Circuit 1...
Page 154 INSTALLER SETTING Conﬁguration - External Pump This function can be set to control the external water pump. Three options are possible, related to the location of the pump. In case of long piping, the External pump is used to overcome high pressure losses or as secondary pump in combination with a parallel buffer tank.
Page 155 Both, heat pump and boiler can be used for space heating and DHW heating. If the Bivalent temperature is reached, the boiler takes over completely and the heat pump is turned off. NOT controlled by LG Controlled by LG Space...
Page 156 DHW by heat pump deactivated ( → DIP switch SW2/2&3) The boiler is connected to the space heating circuit and covers the DHW demand throughout the year. The heat pump is used for space heating above Bivalent temperature only. NOT controlled by LG Controlled by LG Space...
Page 157 INSTALLER SETTING Conﬁguration - Select outdoor air sensor Setting defines if the pre-installed air sensor (mounted at grille of outdoor unit) or a dedicated outside sensor (wall-mounted / accessory) is used for weather-dependent operation (Auto mode). It is highly recommended to use wall-mounted sensor – especially when the outdoor unit is exposed to sunlight.
Page 158 INSTALLER SETTING General - Water Flow Control This setting defines how the integrated water circulation pump is controlled. Select the desired method to control the pump and set the target value if needed. - Pump Capacity: The pump operates with the capacity set (10~100 %) - Fixed Flow Rate: The water pump is automatically controlled to maintain the set flow rate.
Page 159 INSTALLER SETTING General - Anti-freezing option This setting defines the level of frost protection, when the Remote control is turned off. Setting Detection Case Operation Outside temp. < 0 °C Pump always ON AND Outlet water temp. ≤ 20 °C Outside air temp.
Page 160 INSTALLER SETTING General - Backup heater release temp. Depending on local climate conditions, it is necessary to change the temperature condition in which backup heater is released. The backup heater operates in ‘Bivalent-parallel’ to heat pump cycle. It means, below the set outside temperature is released, but it will only run if the target temperature is not reached by cycle.
Page 161 INSTALLER SETTING General - Screed drying This function is used to increase the temperature of a newly installed underfloor heating system. It prevents that the cement is heated too fast and breaks. After activation, the main screen displays „Screed drying“ and the step in progress at the bottom of the screen. - Step: By default the program starts with Step1.
Page 162 INSTALLER SETTING NOTE • If the upper limit setting value of the heating LW temperature is 55 °C or lower, it is set to 55 °C forcibly. If the lower limit setting value of the heating LW temperature is 25 °C or higher, it is set to 25 °C forcibly.
Page 163 INSTALLER SETTING General - Buffer tank hysteresis If a big buffer tank is connected in parallel to the heat pump, a separate sensor can be connected to PCB-connector TB_SENSOR/BUFFER sensing the temperature at the top of the tank or at its outlet pipe.
Page 164 INSTALLER SETTING Circuit 1(2) - Room heating - Air heating set temperature - This setting limits the air temperature range applied to Heating operation that the User can set manually in the Remote controller (Control method=Air or Air+Water; Mode=HEAT) Circuit 1(2) - Room heating - Water heating set temperature - This setting limits the water temperature range applied to Heating operation that the User can set manually in the Remote controller (Control method=Water;...
Page 165 INSTALLER SETTING Auto mode - Seasonal auto temp. If mode is set to Auto, the target temperature is adapted to outside air temperature. This way of control is much more energy efficient than heating(cooling) mode with fixed target temperature. If ‘Mode’ is set to ‘Heating & Cooling’, it is possible to define outdoor temperatures at which the unit switch-over from Heating to Off to Cooling and vice versa.
Page 166 INSTALLER SETTING Domestic hot water - DHW temperature settings The DHW target temperature is set in Main screen by User. ‘DHW set temp range’ will limit the setting range. The type and volume of the tank, as well as the consumption should be taken into account.
Page 167 INSTALLER SETTING Domestic hot water - Thermal disinfection This function can help to prevent legionella bacteria from growing. It is recommended to activate the function if the DHW is not consumed on a regular base. In order to kill the bacteria, a temperature of 70 °C or higher is recommended. For this purpose it is necessary to install and activate an electric boost heater.
Page 168 INSTALLER SETTING Domestic hot water - DHW heating duration Domestic hot water - DHW electric re-heating The following settings can be used to limit the duration of DHW heating and DHW boost heater: - Domestic hot water - DHW heating duration - Active time: Maximum time how long DHW heating by heat pump cycle is activated, until operation mode returns to space heating - Domestic hot water - DHW heating duration - Stop time:...
Page 169 INSTALLER SETTING Domestic hot water - DHW re-circulation In this menu, the recirculation pump can be activated and the pattern of operation is defined. NOTE Operation times of the Recirculation pump should be limited to times when comfort is really needed.
Page 170 INSTALLER SETTING Solarthermal system - Solar collector operating range Solarthermal system - Solar tank temp. limit Solarthermal system - Solathermal dT Basically, the Solar pump starts if the Collector temperature (TB_SENSOR/SOLAR) is higher than the temperature at bottom part of the DHW tank (CN_TH4/WATER TANK SENSOR(B)). By default, the pump starts when the collector is 8 degrees warmer and stops when it is only 2 degrees warmer.
Page 171 INSTALLER SETTING Service - Pump test run 'Test run' will activate the Main pump for 1 hour. During this period, the pump will be turned on and off intermittently to purge air from the cycle. Based on setting 'Configuration/External pump', the External pump will be activated, too. The operation can be stopped by pushing the On/Off button on the Remote controller.
Page 172 INSTALLER SETTING Service - Frost protection temperature A frost protection function prevents freeze up of water pipes. If any pipe sensor measures a temperature below 4°C (Default), the water pump and backup heater are turned on. Defrosting operation is blocked if the leaving water temperature drops below 4 °C (Default) and it won’t start until a temperature of 15 °C (Default) is reached.
Page 173 INSTALLER SETTING Connectivity - Modbus address(HEX) This function allows control of the heat pump by external devices. NOTE To use this function DIP switch No.1 of SW1 must be set to ON and No.2 to Off. Modbus memory map - Baud Rate : 9 600 bps - Stop Bit : 1 stop bit - Parity : None Parity Coil Register (0x01)
Page 174 INSTALLER SETTING Discrete Register (0x02) Register Description Value explanation 10001 Water flow status 0 : Flow rate ok / 1 : Flow rate too low 10002 Water Pump status 0 : Water Pump OFF / 1 : Water Pump ON 10003 Ext.
Page 175 INSTALLER SETTING Input Register (0x03) Register Description Value explanation 30001 Error Code Error Code 30002 ODU operation Cycle 0 : Standby(OFF) / 1 : Cooling / 2 : Heating 30003 Water inlet temp. [0.1 °C ×10] 30004 Water outlet temp. [0.1 °C ×10] 30005 Backup heater outlet temp.
Page 176 INSTALLER SETTING Holding Register (0x04) Register Description Value explanation 40001 Operation Mode 0 : Cooling / 4 : Heating / 3 : Auto 0 : Water outlet temp. control 40002 Control method (Circuit 1/2) 1 : Water inlet temp. control 2 : Room air control Target temp (Heating/Cooling) 40003...
Page 177 INSTALLER SETTING Connectivity - CN_EXT Instead of external Dry contact, CN-EXT can be used to lock the heat pump by external signals. Setting Contact input Operation * Remark Not use CN_EXT is not used In case of simple operation, operation on/off is Open Operation “Off”...
Page 178 INSTALLER SETTING Connectivity - 3rd party boiler Either the heat pump or the boiler is used for space heating (Bivalent-alternative operation) Two different modes are available to switch-over between heat pump and boiler: - Manual: The boiler is activated and de-activated by User setting ‘Function/3rd party boiler’. - Auto: The boiler output is activated based on outdoor temperature.
Page 179 - for instance from PV-panels. There are two options to make use of this logic: - Use Modbus: LG Energy Storage System (ESS) or another third-party device is connected by Modbus serial line. - Use Digital inputs: A third-party controller (e.g. SmartHome controller or PV inverter) is connected through 230 V inputs ("SG-Ready contacts").
Page 180 Product • Refrigerant leakage is a serious danger. Installation Refrigerant leakage If leakage found, contact qualified LG air conditioning installation person. • While cooling operation, condensed dew can drop down to the bottom Drainage treatment of the unit. In this case, prepare drainage treatment (for example,...
Page 181 COMMISSIONING To assure best performance of , it is required to perform periodical check and maintenance. It is recommended to proceed following check list for once a year. CAUTION Turn off the power before proceeding maintenance. Category Item Check Point •...
Page 182 COMMISSIONING Starting Operation Check before Starting Operation Check to see whether there is any refrigerant leakage, and check whether the power or transmission cable is connected properly. Confirm that 500 V megger shows 2.0 MΩ or more between power supply terminal block and ground.
Page 183 COMMISSIONING Trouble shooting operates not properly or it does not start operation, please check following list. CAUTION Turn off the power before proceeding troubleshooting. Critical trouble / Heavy trouble Slight trouble Option trouble Error Problem which Compressor cycle In most case, A problem is can stop system trouble.
Page 184 COMMISSIONING Troubleshooting for Problem while Operation Problem Reason Solution • Setting target • Set target temperature correctly. temperature is not • Check if temperature is water-based or air-based. See proper. 'Remote sensor active' and 'Temp. sensor selection' • Charged water is not •...
Page 185 DHW tank sensor • Sensor fault broken • Electrical or mechanical EEPROM error damage of EEPROM • Request support from LG (Indoor-PCB) • BLDC water pump defect BLDC water pump • Trouble with BLDC-type • Wrong connection or damage of driver...
Page 186 COMMISSIONING Error code Title Cause of error Check point • Check the actual flow rate in the remote controller (Monitoring screen) • Make sure there is no water leakage / low pressure • Flow rate <= Minimum flow • Make sure the strainer or water pipe is for at least 15 seconds not clogged and valves are open.
Page 187 COMMISSIONING Error code Title Cause of error Check point • Malfunction of compressor • Blocking of pipe CT 2 (Max CT) • Input over-current • Low voltage input • Refrigerant, Pipe length, Blockage... • DC Link Voltage is above • Check CN_(L), CN_(N) Connection 420 V DC DC Link Voltage is •...
Page 188 COMMISSIONING Error code Title Cause of error Check point • Defective low pressure sensor • Defective fan (motor) • Refrigerant shortage/leakage • Deformation of refrigerant pipe • Excessive decrease of low Low Pressure error • Defective EEV pressure • Outdoor-HEX blocked •...
Page 189 COMMISSIONING Error code Title Cause of error Check point • Bad connection of thermistor connector Problem in • Open / Short condenser out pipe • Defect of thermistor connector • Soldered poorly temperature (Open/Short) • Internal circuit error sensor • Defect of outdoor PCB •...
Page 190 COMMISSIONING Error code Title Cause of error Check point Problem in • Check if there is defect of thermistor heatsink • Abnormal value of connector (Open/Short) temperature sensor(Open/Short) • Check defect of outdoor PCB sensor • Fan rotation speed < 10 •...
Page 191 COMMISSIONING Error code Title Cause of error Check point • Bad connection of thermistor connector Problem in Solar • Open / Short • Defect of thermistor connector hot water tank • Soldered poorly (Open/Short) temperature • Internal circuit error sensor •...
Page 192 ANNEX ANNEX NOTE The sensor resistance value and the voltage value at both ends may vary depending on the ambient temperature and the value has a deviation of 5 %. There may be some errors depending on the measurement equipment. Room air temperature sensors / Wall mounted air sensor (NTC 10kOhm) Resistance(kΩ) Indoor Temp.(°C)
Page 193 ANNEX Solar Temperature sensor (PT1000) Resistance (Ω) Temperature 842.47 882.11 921.57 960.86 1000 1039.03 1077.94 1116.73 1155.41 1193.97 1232.42 1270.75 1308.97 1347.07 1385.06 1422.93 1460.68...
Page 194 ANNEX Flow sensor Flow(l/min) Voltage(V) 0.50 10.0 0.70 15.0 0.90 20.0 1.10 25.0 1.30 30.0 1.50 35.0 1.70 40.0 1.90 45.0 2.10 50.0 2.30 55.0 2.50 60.0 2.70 65.0 2.90 70.0 3.10 75.0 3.30 80.0 3.50 Unplugged Plugged 0.5 ~ 3.5 V 5.0 V (±...
Page 195 ANNEX Water pressure sensor Pressure (bar) Voltage(V) 0.53 0.56 0.59 0.62 0.65 0.68 0.71 0.74 0.77 0.80 0.83 0.86 0.89 0.92 0.95 Power Terminal Ground Terminal (Vin) +0.25 Output Terminal Ø25.17 -0.25 (Vout) Unplugged Plugged 1 2 3 1 2 3 0.5 ~ 3.5 V (±...
Page 197 LG Electronics Inc. Single Point of Contact (EU/UK) : LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands Factory : LG Electronics Inc. 84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA UK Importer : LG Electronics U.K. Ltd...
Page 198 HM121 / 141 / 161HF UB60 HN1616HC NK0 HM123 / 143 / 163HF UB60 HN1639HC NK0 HM093HFX UB60 PHCS0 ENCXLEU HM091HF UB40 HN1616HY NK0 HM093HF UB40 HN1639HY NK0 HM071HF UB40 HM073HF UB40 www.lg.com MFL68680917 Rev.02_081624 Copyright © 2023 - 2024 LG Electronics. All Rights Reserved.
Page 199 Troubleshooting Tips first, you may not need to call for service at all. How to find additional model information Energy Labels and Product Fiches for all possible combinations can be found at https://www.lg.com/global/support/cedoc/cedoc. Search for outdoor unit name in cedoc page. For your records Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes.
Page 200 TABLE OF CONTENTS This manual may contain images or content different from the model you purchased. This manual is subject to revision by the manufacturer. INTRODUCTION ................2 SAFETY INSTRUCTIONS .............. 5 READ ALL INSTRUCTIONS BEFORE USE ............5 WARNING INSTRUCTIONS .................6 CAUTION INSTRUCTIONS................
Page 201 TABLE OF CONTENTS DHW Recirculation Schedule ................37 ENERGY MONITORING SETTING ..........39 Power/Calorie ....................39 Energy Setting ....................39 FUNCTION SETTING ..............40 How to enter function setting ................ 40 Function setting ....................40 Wi-Fi Pairing ...................... 41 Party Boiler ....................42 Water Temperature Setting ................
Page 202 SAFETY INSTRUCTIONS 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.
Page 203 SAFETY INSTRUCTIONS Notes for Flammable Refrigerant The following symbols are displayed on units. This symbol indicates that this appliance uses a flammable refrigerant. If the refrigerant is leaked and exposed to an external ignition source, there is a risk of fire.
Page 204 SAFETY INSTRUCTIONS • Do not use a defective or underrated circuit breaker. Use the correctly rated breaker and fuse. − There is risk of fire or electric shock. • Do not use a multi outlet. Always use this appliance on a dedicated circuit and breaker.
Page 205 SAFETY INSTRUCTIONS • Never install the unit on a moving base or a place from where it can fall down. − The falling unit can cause damage or injury or even death of a person. • When the product is soaked (flooded or submerged) in water, contact an Authorized Service Center for repair before using it again.
Page 206 SAFETY INSTRUCTIONS • Safely dispose off the packing materials. Like screws, nails, batteries, broken things etc after installation or service and then tear away and throw away the plastic packaging bags. − Children may play with them and cause injury. •...
Page 207 SAFETY INSTRUCTIONS • Ventilate the product room from time to time when operating it together with a stove, or heating element etc. − Oxygen deficiency can occur and hence harm your health. • Turn the main power off when cleaning or repairing the product. −...
Page 208 SAFETY INSTRUCTIONS • This appliance is intended to be used by expert or trained users in shops, in light industry and on farms, or for commercial use by lay persons. • Do not step on the unit and do not put anything on it. It may cause an injury through dropping of the unit or falling down.
Page 209 SAFETY INSTRUCTIONS • Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants.
Page 210 SAFETY INSTRUCTIONS • Keep level even when installing the product. − To avoid vibration or noise. • Do not install the product where the noise or hot air from the unit could damage or disturb the neighborhoods. − It may cause a problem for your neighbors and hence dispute. •...
Page 211 SAFETY INSTRUCTIONS • Do not tilt the unit when removing or uninstalling it. − The condensed water inside can spill. • Do not mix air or gas other than the specified refrigerant used in the system. − If air enters the refrigerant system, an excessively high pressure results, causing equipment damage or injury.
Page 212 SAFETY INSTRUCTIONS • If anyone other than a licensed Professional installs, repairs, or alters LG Electronics Air Conditioning Products, the warranty is voided. − All costs associated with repair are then the full responsibility of the owner. • Do not install the unit in potentially explosive atmospheres.
Page 213 PRODUCT INTRODUCTION PRODUCT INTRODUCTION Water Water In ELCB ※ It can be different by model. Switch box Description Name Name Control Unit DHW tank kit (PHLTA/PHLTC)* Outdoor unit Circuit breaker for DHW boost heater* Communication cable DHW boost heater* Remote controller * Optional Power supply indoor unit ELCB : Earth-leakage circuit breaker...
Page 214 PRODUCT INTRODUCTION Remote controller Operation display window On/Off button Back button Up/Down/Left/Right button OK button Operation display window Operation and Settings status display When you move to the previous stage from the menu’s Back button setting stage Up/down/left/right button When you change the menu’s setting value OK button When you save the menu’s setting value On/Off button...
Page 215 DESCRIPTION OF THE OPERATION DESCRIPTION OF THE OPERATION Main screen In the main screen, press [L , M (left/right)] button to select the category to set, and you can control by pressing [J , K (up/down)] button. Menu screen In the main screen, press [L , M (left/right)] button to select the menu and press [OK] button to move to menu screen.
Page 216 DESCRIPTION OF THE OPERATION Setting screen Select the category to set using [J , K (up/down)] button. In each detail screen of the menu, as in the box in the left figure, when "L , M" icons are displayed at the same time, you can immediately apply the setting value by pressing [L , M (left/right)] button.
Page 217 DESCRIPTION OF THE OPERATION Monitoring In the main screen, you can enter the monitoring screen by pressing [Back] button In the monitoring screen, you can check the following information, • The room temperature • The water inlet / outlet temperature •...
Page 218 TEMPERATURE SETTING TEMPERATURE SETTING Controlling desired temperature You can easily control to the desired temperature. • In the main screen, press [L , M (left/right)] button to select the desired temperature category, and press [J , K (up/down)] button to set the desired temperature. −...
Page 219 OPERATION SETTING OPERATION SETTING On / Off will be turned on or off. Press the remote controller’s [On/Off] button. • If the product is in operation, [On/Off] button will be illuminated. • If the product is in off, [On/Off] button backlight will be off. Operation mode You can easily control the desired operation mode.
Page 220 OPERATION SETTING Cooling operation Cooling operation’s minimum setting temperature is 5 °C. • The desired temperature can be controlled in the units of 1 °C. − Set the desired temperature lower than the water temperature. − water temperature is displayed on the default screen of the remote controller. −...
Page 221 OPERATION SETTING Heating operation • The desired temperature can be controlled in the units of 1 °C. − Set the desired temperature higher than the water temperature. − Water temperature is displayed on the default screen of the remote controller. −...
Page 222 OPERATION SETTING AI / Auto operation In order to save energy and to give highest comfort, setting temperature will follow outside temperature. If outdoor temperature decreases, heating capacity for the house will increase automatically in order to keep same room temperature. All parameters will be set by installer during start-up procedure and will be adapted to the site characteristic.
Page 223 OPERATION SETTING NOTE • The Auto temperature (set by Installer) can be adjusted if needed. • -5 ~ -1: The preset temperature curve is lowered by 1 to 5 degrees. • AI: Preset is kept. • 1 ~ 5: The preset temperature curve is lifted by 1 to 5 degrees. •...
Page 224 OPERATION SETTING DHW heating operation Function to set whether or not to use a installed DHW tank NOTE • This function is not used when the DHW tank is not installed. • If you want to know more information, refer function on installation information section. Quick DHW tank heating If there is urgent DHW heating demand, Quick DHW Tank Heating mode can be used to reduce the time to reach target DHW tank temperature by forcibly turning on DHW tank heater.
Page 225 OVERVIEW OWNER’S SETTINGS OVERVIEW OWNER’S SETTINGS Menu structure Menu Lock ................30 All Lock ................30 On/Off Lock ................30 Mode Lock ................30 DHW Lock Schedule ................32 Display Schedule ................33 Schedules & Edit ................35 Exception Day ................
Page 226 OVERVIEW OWNER’S SETTINGS ................45 User ......46 Language ......47 Temperature Unit ......48 Screen Saver Timer ......48 LCD Brightness In Idle ......49 Date ......50 Time ......51 Summer Time ......52 Password ......53 Schedule Reset ......
Page 227 LOCK SETTING LOCK SETTING How to enter Lock setting Lock setting – all, on/off, mode, DHW lock • It is the function to lock the button operation of the remote controller so that children or other persons cannot use it without permission. •...
Page 228 SCHEDULE SETTING SCHEDULE SETTING How to enter schedule • There are 4 options in schedule formula ,depending on product function. − Room : Space heating and cooling − DHW : Hot water heating − DHW heater : Hot water boost heater −...
Page 229 SCHEDULE SETTING Display schedule It is the function that can check the status of the timer (schedule) saved in the remote controller. • In the schedule list, select the daily schedule status category, and press [OK] button to move to the detail daily schedule status screen.
Page 230 SCHEDULE SETTING Schedules & Edit It is the function that can check the status of the timer (schedule) saved in the remote controller. • In the schedule list, select the daily schedule status category, and press [OK] button to move to the daily schedule status detail screen.
Page 231 SCHEDULE SETTING Schedules & Edit – Add schedule Description of each stage in Add schedule Stage 1. Period setting Stage 2. Day of week setting Stage 3. Time setting Stage 4. Operation setting Add schedule is completed • In ‘Stage 1’, it sets the period to perform the timer. •...
Page 232 SCHEDULE SETTING Exception Day It is the function to automatically stop the operation on the set timer day. • In the schedule list, select the exception day category, and press [OK] button to move to the Exception day designation detail screen. •...
Page 233 SCHEDULE SETTING Low Noise Mode Time It is the function to set the start and end time of the outdoor unit’s low noise mode operation. • After setting the start time and the end time, press [OK] button to move to the upper level list. •...
Page 234 SCHEDULE SETTING DHW Recirculation Schedule It is the function that can check the status of DHW recirculation timer (schedule) saved in the remote controller. • In the schedule list, select the DHW recirculation schedule status category, and press [OK] button to move to the daily schedule status detail screen. You can check the set Timer time, period, and day of week.
Page 235 SCHEDULE SETTING Description of each stage in Add schedule • Stage 1. Usage setting − It sets the use of the timer setting. − Select ‘Use’ to move on the next stage • Stage 2. Time setting setting − It sets the period to perform the timer. −...
Page 236 ENERGY MONITORING SETTING ENERGY MONITORING SETTING It provides useful information on the mount of energy and power during the week/month/year. Opening “Energy “option, these are presented on screen. Power/Calorie The information includes power usage / heat output produced and up to annual trend. NOTE •...
Page 237 FUNCTION SETTING FUNCTION SETTING How to enter function setting To enter the menu displayed at the bottom, you need to enter the function setting menu as follows. Function setting...
Page 238 FUNCTION SETTING Wi-Fi Pairing It is the function to control remotely through network with indoor unit.
Page 239 FUNCTION SETTING Party Boiler NOTE • This function is not default. • It can be activated, after setting value in installer mode. On/off mode of this option are opened by pushing "L" or "M" button simply and easily.
Page 240 FUNCTION SETTING Water Temperature Setting If you choose air+water temperature control way, this option is listed-up on function setting display. It is the function to set upper limit of water temperature while controlling the unit based on room air temperature. Value Description Manually setting water target temperature of heating and cooling...
Page 241 FUNCTION SETTING Domestic hot water mode You can choose Domestic hot water mode (Comfort / Eco) by pressing button [L , M (left/right)]. Eco mode is an operation mode that can reduce electricity bill and improve efficiency. Eco mode has a relatively slow rise in hot water temperature compared to Comfort. Default (Comfort mode) Eco mode...
Page 242 USER SETTING USER SETTING How to enter user setting To enter the menu displayed at the bottom, you need to enter the user setting menu as follows. User Setting • You can set the product user functions. • Some functions may not be available in some product types.
Page 243 USER SETTING Language Set the language to be displayed on the remote controller. Language 한국어 English Français Deutsch Italiano Español Русский Polski Português 中国 Čeština Türk ελληνικά Nederlands Românesc Български Magyar Srpski Slovenščina Hrvatski Dansk українська...
Page 244 USER SETTING Temperature Unit Set the temperature unit displayed on the remote controller. Celsius Value Fahrenheit CAUTION • The temperature unit function may not work or work differently in some products. • You cannot set the temperature unit in the slave wired remote controller.
Page 245 USER SETTING Screen Saver Timer Adjust the screen Off time of the remote controller. Value 15 seconds 30 seconds (default) 1 minute CAUTION • Selecting longer stand by screen will decrease LCD lifespan. LCD Brightness In Idle Adjust the remote controller’s screen brightness. Value 10 % 20 %...
Page 246 USER SETTING Date Set the date displayed on the remote controller.
Page 247 USER SETTING Time Set the time displayed on the remote controller. • In the screen, Time display can be presented in the form of AM / PM or 24 hours standard.
Page 248 USER SETTING Summer Time Set the daylight savings time dates in the remote controller. • Summer time: The system to advance the time by 1 hour from the spring when the day is longer and return back in the fall when the day gets shorter. •...
Page 249 USER SETTING Password Set the password to prevent unauthorized change to remote controller settings. • If the password is set, when you enter “menu – setting”, you need to input password to enter the setting list. • When you forgot the password, you can initialize the password using the installer setting’s “password initialization”.
Page 250 USER SETTING Schedule Reset Initialize all timer settings in the remote controller. • Enter the 'Schedule Reset' screen and press the [OK] button to reset Slee/Simple timer, On/Off timer, schedules and exception days in the remote controller.
Page 251 USER SETTING Theme Set the theme of the remote controller screen. Auto return to main screen Set the auto return mode. System Reboot Restart the remote controller. • In the user setting list, select the system restart setting category, and press [OK] button to move to the detail screen.
Page 252 SERVICE SETTING SERVICE SETTING How to enter service setting To enter the menu displayed at the bottom, you need to enter the service setting menu as follows. Service Contact View Service Contact for service telephone no. A phone number must be entered for this in advance.
Page 253 SERVICE SETTING Model Information View Model Information (Model /Serial No / Capacity) RMC Version Information View Model Information (Model /Serial No / Capacity) Open source license View Model Information (Model /Serial No / Capacity)
Page 254 USING THERMOSTAT USING THERMOSTAT The term "thermostat", which is widely used in this chapter, is a kind of 3rd party accessory. LG Electronics does not supply thermostat and it should be supplied 3rd party manufacturers. Room thermostat can be used for easy and convenience control. To utilize thermostat more efficiently and correctly, this chapter presents information about using thermostat.
Page 255 EMERGENCY OPERATION EMERGENCY OPERATION • If your heat pump has an error, a pop-up window will appear on the screen. In any case you should note down the Error code displayed and inform your installer or authorized service center. • If an electrical heater is connected, Emergency operation might be possible - depending how severe the error is.
Page 256 EMERGENCY OPERATION Emergency operation is not automatically restarted after main electricity power is reset. • In normal condition, the product operating information is restored and automatically restarted after main electricity power is reset. • But in emergency operation, automatic re-start is prohibited to protect the product. •...
Page 257 EMERGENCY OPERATION • Main PCB assembly (Indoor) Error Description Main Reasons Code Remote air temperature sensor of Problem in Remote Room Air sensor Main PCB(indoor) is open or short. Problem in Refrigerant (Inlet side) Refrigerant inlet pipe temperature 02** sensor sensor of indoor unit is open or short..
Page 258 MAINTENANCE AND SERVICE MAINTENANCE AND SERVICE Maintenance activities In order to ensure optimal availability of the unit, a number of checks and inspections on the unit and the field wiring have to be carried out at regular intervals, preferably yearly. This maintenance should be carried out by your local agreed technician.
Page 259 MAINTENANCE AND SERVICE Call the service immediately in the following situations • Anything abnormal such as burning smell, loud noise etc. happen. Stop the unit and turn the breaker off. Never try to repair by yourself or restart the system in such cases. •...

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