LG HU123MA User guide

OWNER’S MANUAL

AIR-TO-WATER

HEAT PUMP

Please read this manual carefully before operating your set and retain it for future reference.

Original instruction

[Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands

[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA

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MFL68680905	www.lg.com
Rev.05_082019	Copyright © 2017 - 2019 LG Electronics Inc. All Rights Reserved.

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2 INTRODUCTION

INTRODUCTION

What is AWHP(Air to Water Heat Pump)?

•Air to Water Heat Pump system can be used as various heating solution from floor heating to hot water supply with multiple heat sources. It is 4 times more energy efficient than conventional system.

•High efficiency with conventional boiler functions.

Why is AWHP(Air to Water Heat Pump)?

•Various regulations are implemented in Europe to reduce energy use of building heating.

•Also, AWHP-related subsidy programs are implemented by country.

Read this manual

Inside you will find many helpful hints on how to use and maintain your AWHP properly. Just a little preventive care on your part can save you a great deal of time and money over the life of your product.

You'll find many answers to common problems in the chart of troubleshooting tips. If you review our chart of Troubleshooting Tips first, you may not need to call for service at all.

For your records

Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes. Write the model number and the serial number here:

Model number :

Serial number :

You can find them on a label on the side of each unit.

Dealer’s name :

Date of purchase :

TABLE OF CONTENTS

2INTRODUCTION

5SAFETY INSTRUCTIONS

11 PRODUCT INTRODUCTION

11Typical installation scene

12Remote controller

13DESCRIPTION OF THE OPERATION

13Main screen

13Menu screen

14Setting screen

14Popup screen

15Monitoring

15Returning to the screen

16OPERATION SETTING

16 On / Off

16Operation mode

17Cooling operation

18Heating operation

19AI / Auto operation

20TEMPERATURE SETTING

20Controlling desired temperature

21Select Temperature Sensor

22DHW heating operation

22Quick DHW tank heating

23View temperature

25 LOCK SETTING

25 How to enter Lock setting

25Lock setting – all, on/off, mode, DHW lock

26TIMER SETTING

26Timer entrance and setting method

27Simple Timer

28Turn-On Reservation

29Turn-Off Reservation

30SCHEDULE SETTING

30How to enter schedule

31Daily schedule

32Schedules & Edit

33Schedules & Edit – Add schedule

34Exception Day

TABLE OF CONTENTS	3

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4	TABLE OF CONTENTS

35 METER INTERFACE SETTING

35Connection path of meter interface

36Information of meter interface

37FUNCTION SETTING

37How to enter function setting

38Function setting

39Low Noise Mode Time

40Wi-Fi Pairing

41Water Temperature Setting

423rd Party Boiler

43USER SETTING

43How to enter user setting

43User Setting

44Language

45Temperature Unit

46Screen Saver Timer

46	LCD Brightness In Idle
47	Date
48	Time
49	Summer Time
50	Password
51	Schedule Initialization
52	Theme
52	System Reboot

53 OVERVIEW OWNER’S SETTINGS

53 Menu structure

55 USING THERMOSTAT

55How to use thermostat

56EMERGENCY OPERATION

58 MAINTENANCE AND SERVICE

58 Maintenance activities

58 When the unit is not going....

58 Call the service immediately in the following situations

							SAFETY INSTRUCTIONS		5
SAFETY INSTRUCTIONS
			Read the precautions in this manual				This appliance is filled with
			carefully before operating the unit.				flammable refrigerant (R32)
			This symbol indicates that the				This symbol indicates that a service
							personnel should be handling this
			Operation Manual should be read
							equipment with reference to the
			carefully.
							Installation Manual.

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

The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as described below.

!This symbol is displayed to indicate matters and operations that can cause risk.

Read the part with this symbol carefully and follow the instructions in order 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 the minor injury or damage to the product.

!WARNING

•Always ground the product.

-There is a risk of electric shock.

•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.

-There is risk of fire or electric shock.

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		6	SAFETY INSTRUCTIONS
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		• For electrical work, contact the dealer, seller, a qualified electrician, or an

Authorized Service Center. Do not disassemble or repair the product by yourself.

- There is risk of fire or electric shock.

• Always ground the product as per the wiring diagram. Do not connect the ground wire to gas or water pipes lightning rod or telephone ground wire. - There is risk of fire or electric shock.

• Install the panel and the cover of control box securely.

- There is risk of fire or electric shock due to dust, water etc.

• Use the correctly rated breaker or fuse. - There is risk of fire or electric shock.

• Do not modify or extend the power cable. If the power cable or cord has scratches or skin peeled off or deteriorated then it must be replaced.

- There is risk of fire or electric shock.

• For installation, removal or reinstall , always contact the dealer or an Authorized Service Center.

- There is risk of fire, electric shock, explosion, or injury.

• Do not install the product on a defective installation stand. Be sure that the installation area does not deteriorate with age.

- It may cause product to fall.

• 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.

- There is risk of fire or electric shock.

• Be sure to check the refrigerant to be used. Please read the label on the product.

- Incorrect refrigerant can prevent the normal operation of the unit.

• Don't use a power cord, a plug or a loose socket which is damaged. - Otherwise it may cause a fire or electrical shock.

• Do not touch , operate, or repair the product with wet hands. - There is risk of electric shock or fire.

• Do not place a heater or other heating appliances near the power cable. - There is risk of fire and electric shock.

• Do not allow water to run into electric parts. Install the unit away from water sources.

- There is risk of fire, failure of the product, or electric shock.

• Do not store or use or even allow flammable gas or combustibles near the product.

- There is risk of fire.

SAFETY INSTRUCTIONS		7
• Wiring connections must be secured tightly and the cable should be		<![if ! IE]> <![endif]>ENGLISH

routed properly so that there is no force pulling the cable from the connection terminals.

- Improper or loose connections can cause heat generation or fire.

• 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.

• Make sure to check that the power device is not dirty, loose or broken and then turn on the power.

- Dirty, loose or broken power device can cause electric shock or fire.

• In unit the step-up capacitor supplies high voltage electricity to the electrical components. Be sure to discharge the capacitor completely before conducting the repair work.

- An charged capacitor can cause electrical shock.

• When installing the unit, use the installation kit provided with the product. - Otherwise the unit may fall and cause severe injury.

• Be sure to use only those parts which are listed in the service parts list. Never attempt to modify the equipment.

- The use of inappropriate parts can cause an electrical shock, excessive heat generation or fire.

• Do not use the product in a tightly closed space for a long time. Perform ventilation regularly.

- Oxygen deficiency could occur and hence harm your health.

• Do not open the front cover or grille of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.)

- There is risk of physical injury, electric shock, or product failure.

• If strange sounds, smell or smoke comes from product, immediately turn the breaker off or disconnect the power supply cable.

- There is risk of electric shock or fire.

• 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. - There is risk of electric shock.

• Take care to ensure that nobody especially kids could step on or fall onto the unit.

- This could result in personal injury and product damage.

• Take care to ensure that power cable could not be pulled out or damaged during operation.

- There is risk of fire or electric shock.

		8	SAFETY INSTRUCTIONS
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		• Do not touch any electric part with wet hands. you should be cut power

before touching electric part.

- There is risk of electric shock or fire.

• Do not touch refrigerant pipe and water pipe or any internal parts while the unit is operating or immediately after operation.

- There is risk of burns or frostbite, personal injury.

• If you touch the pipe or internal parts, you should be wear protection or wait time to return to normal temperature.

- Otherwise , it may cause burns or frostbite, personal injury.

• Do not touch leaked refrigerant directly. - There is risk of frostbite.

• Make sure to install mixing valve (field supply). The mixing valve is setting the water temperature. The hot water temperature maximum values shall be selected according to the applicable legislation.

• Do not heated to a temperature of more than provided by the product. - Otherwise, it may cause fire or damage of product.

• 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.

• Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress air or Oxygen and Do not use Flammable gases. Otherwise, it may cause fire or explosion.

- There is the risk of death, injury, fire or explosion.

• The appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as specified for operation.

• The appliance shall be stored in a room without continuously operating open flames (for example an operating gas appliance) and ignition sources (for example an operating electric heater).

• The appliance shall be stored so as to prevent mechanical damage from occurring.(for R32)

• Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorises their competence to handle refrigerants safely in accordance with an industry recognised assessment specification.(for R32)

• Keep any required ventilation openings clear of obstruction.(for R32)

• 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. (for R32)

SAFETY INSTRUCTIONS		9
• The appliance shall be stored in a well-ventilated area where the room size		<![if ! IE]> <![endif]>ENGLISH
corresponds to the room area as specified for operation. (for R32)
• The appliance shall be stored in a room without continuously operating
open flames (for example an operating gas appliance) and ignition sources
(for example an operating electric heater). (for R32)

! CAUTION

• Two or more people must lift and transport the product. - Avoid personal injury.

• Do not install the product where it will be exposed to sea wind (salt spray) directly.

- It may cause corrosion on the product.

• 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.

• Always check for gas (refrigerant) leakage after installation or repair of product.

- Low refrigerant levels may cause failure of product.

• Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer AWHP, not a precision refrigeration system.

- There is risk of damage or loss of property.

• Do not block the inlet or outlet of air flow. - It may cause product failure.

• Use a soft cloth to clean. Do not use harsh detergents, solvents or splashing water etc.

- There is risk of fire, electric shock, or damage to the plastic parts of the product.

• Do not step on or put anything on the product.

- There is risk of personal injury and failure of product.

• Do not insert hands or other objects through the air inlet or outlet while the product is operating.

- There are sharp and moving parts that could cause personal injury.

• Be cautious when unpacking and installing the product. - Sharp edges could cause injury.

• If the refrigerant gas leaks during the repair, do not touch the leaking refrigerant gas.

- The refrigerant gas can cause frostbite (cold burn).

		10	SAFETY INSTRUCTIONS
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		• 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.
		• If the refrigerant gas leaks during the installation, ventilate the area
		immediately.
		- Otherwise it can be harmful for your health.
		• Dismantling the unit, treatment of the refrigerant oil and eventual parts
		should be done in accordance with local and national standards.
		• Do not expose your skin or kids or plants to the cool or hot air draft.
		- This could harm to your health.
		• Use a firm stool or ladder when cleaning, maintaining or repairing the
		product at an height.
		- Be careful and avoid personal injury.
		• The hot water may not be available immediately, during disinfection
		operation or depending on the amount of hot water.
		• During floor heating operation it is important to limit the
		minimum/maximum water temperature.
		• 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.
		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 should be supervised to ensure that they do not play with the
		appliance.
		This appliance can be used by children aged from 8 years and above and
		persons with reduced physical, sensory or mental capabilities or lack of
		experience and knowledge if they have been given supervision or
		instruction concerning use of the appliance in a safe way and understand
		the hazards involved. Children shall not play with the appliance. Cleaning
		and user maintenance shall not be made by children without supervision.

PRODUCT INTRODUCTION 11

PRODUCT INTRODUCTION

Typical installation scene

	3
1
6
Water	2
	Water
Out	In
4

5

1.Indoor unit

2.Outdoor unit

3.Refrigerant pipe and connecting cable

4.Water pipe

5.Ground wire to ground outdoor unit to prevent electrical shocks.

6.Remote controller

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*The shape of products can be changed according to the model capacity and type.

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12 PRODUCT INTRODUCTION

Remote controller

Operation display window

Back button					OK				On/Off button
Up/Down/Left/Right									OK button
button
Operation display window			Operation and Settings status display
Back button			When you move to the previous stage from the menu’s
			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			When you turn ON/OFF the AWHP

NOTE

•Some functions may not be operated and displayed depending on the product type.

•The actual product can be different from above contents depending upon model type.

•When using simultaneous operation system, whenever press remote controller button, system will approximately operate after 1~2 minutes.

DESCRIPTION OF THE OPERATION 13

DESCRIPTION OF THE OPERATION

Main screen

In the main screen, press [<, >(left/right)] button to select the category to set, and you can control by pressing [ , (up/down)] button.

Menu screen

In the main screen, press [<, >(left/right)] button to select the menu and press [OK] button to move to menu screen.

In the menu screen, press [<, >(left/right)] button to select the category to set, and press [OK] button to move to the detail screen.

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14 DESCRIPTION OF THE OPERATION

Setting screen

Select the category to set using [ , (up/down)] button.

In each detail screen of the menu, as in the box in the left figure, when “<,>” icons are displayed at the same time, you can immediately apply the setting value by pressing [<, >(left/right)] button.

For the values that can be set in each category, refer to the detail manual for each function.

In each detail screen of the menu, as in the box in the left figure, if only “>” icon is displayed, you can move to the detail setting screen by pressing [>(right) or OK] button.

For the values that can be set in each category, refer to the detail manual for each function.

Popup screen

The toast message is the message displayed at the bottom of the screen when an operation is turned On/Off or if a function is set / canceled.

The popup message is mainly displayed when an error occurred in the product.

< Toast message >

< Popup message >

DESCRIPTION OF THE OPERATION 15

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

-The water pump operation

Returning to the screen

In the main screen, after moving to the category by pressing [<, >(left/right)] button, if there is no remote controller operation, after 10 seconds, it returns to the main screen basic position. (basic position: indoor temperature display part)

In the screens except the main screen, if there is no remote controller operation for 1 minute, it moves to the main screen.

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16 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.

In the main screen, press [<,>(left/right)] button to select the operation mode or home leave or hold category, and press [ , (up/down)] button to set the operation mode.

Some products may not support some operation modes.

	Mode	Description
		Cool the room to the desired temperature.
	Cool	Activated when No. 4 ON of indoor unit PCB DIP SW 2. (Refer to
		installer setting.)
	Heat	Heats the room to the desired room temperature.
	AI / Auto	The product automatically provides the appropriate fan speed based on
		the temperature of the room.

OPERATION SETTING 17

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.

-If the setpoint is set higher than the water temperature, then the unit will remain in the cool mode but will not begin to cool the water temperature exceeds the setpoint.

-If your unit is operating in cooling mode and you press the [On/Off] button the cooling operation will shut off.

NOTE

Activated when No. 4 ON of indoor unit PCB DIP SW 2 (Refer to installer setting)

What is 3 minutes delay function?

After the cooling stops, when the product is started right away, the reason that the cold water does not come out is that it is the function to protect the compressor.

The compressor starts after 3 minutes and the cold water comes out.

NOTE

The compressor starts after 3 minutes and the cold water comes out.

In the cooling operation, you can select the desired temperature in the range of 5 °C~27 °C. The favorable temperature difference between the water inlet temperature and outlet temperature is 5 °C.

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18 OPERATION SETTING

Heating operation

The heating operation’s minimum setting temperature is 15 °C.

• 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.

-When the desired temperature is set lower than the water temperature, warm water doesn't come out.

-If your unit is operating in heating mode and you press the [On/Off] button the heating operation will shut off.

NOTE

In the heating operation, you can select the desired temperature in the range of 15 °C~65 °C.