LG THERMA V Series User Manual

LG THERMA V Series

59 pages

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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

OWNER’S MANUAL

AIR-TO-WATER

HEAT PUMP

www.lg.com

MFL68680905

Rev.01_062118

Copyright © 2017 - 2018 LG Electronics Inc. All Rights Reserved.

ENGLISH ITALIANO

ESPAÑOL

FRANÇAIS DEUTSCH

ΕΛΛΗΝΙΚΆ

ČEŠTINA

NEDERLANDS

POLSKI

LIMBA ROMÂNĂ

Table of Contents

Other manuals for LG THERMA V Series

Installation Manual124 pages

Questions and Answers:

R
Richard BerryJul 27, 2025
Why is my LG THERMA V heating not satisfactory?
- J
  Jerry AguilarJul 27, 2025
  If your LG Heat Pump isn't providing enough heat, ensure the target temperature is set correctly, and verify if the temperature setting is appropriate for water or air-based heating. Insufficient charged water could also be the cause; check the pressure gauge and add water until it reads 2~2.5 Bar. A low water flow rate might be due to a clogged strainer needing cleaning, a pressure gauge reading above 4 Bar, or a water pipe obstructed by particles or lime.
S
Samuel WatsonAug 2, 2025
What to do if LG THERMA V doesn't start but remote controller displays information?
- L
  Larry JoyceAug 2, 2025
  If your LG Heat Pump isn't starting even though the remote controller shows information, it could be due to the water inlet temperature being too high (above 78 °C) or too low (below 5 °C). In the first case, the unit will prevent operation for system protection. In the second case, wait for the unit to warm up the water. If the water inlet temperature is below 15 °C during heating, wait for it to reach 18 °C. If the problem persists and you're not using a back-up heater accessory (HA**1M E1), consider increasing the water temperature using an external heat source.
P
Patrick MartinezAug 9, 2025
How to reset thermal protection on LG Heat Pump electrical heater?
- P
  Pamela SloanAug 9, 2025
  To reset the safety thermostat, press the red button until you hear a “CLICK”.
A
Andrea ReynoldsAug 14, 2025
What to do if water floods out through drain hose in LG Heat Pump?
- F
  frank22Aug 14, 2025
  If water is flooding out through the drain hose of your LG Heat Pump, it's likely that too much water has been charged. To fix this, open the safety valve switch to release water until the pressure gauge indicates 2~2.5 Bar.
D
Douglas CoxAug 20, 2025
How to fix LG THERMA V when DHW is not hot?
- M
  megan45Aug 21, 2025
  If the DHW (Domestic Hot Water) from your LG Heat Pump is not hot, the thermal protector of the water tank heater may have been activated. To resolve this, open the side panel of the DHW tank and push the reset button on the thermal protector. Alternatively, DHW heating may be disabled. Ensure that DHW Heating Operation is selected and the corresponding icon is displayed on the remote controller.

LG THERMA V Series Specifications

General

Brand	LG
Model	THERMA V Series
Category	Heat Pump
Language	English

Summary

Important Safety Instructions

Product Introduction

Typical installation scene

Illustrates the physical arrangement of the indoor unit, outdoor unit, and connecting pipes.

Remote controller

Details the display window and buttons of the remote controller for system operation.

Operation Setting

On / Off

Details the procedure for turning the air conditioner unit on or off using the remote controller.

Operation mode

Guides users on selecting different operational modes like cooling, heating, or AI/Auto.

Cooling operation

Explains the settings and functions specific to the cooling mode of operation.

Heating operation

Details the settings and functions for operating the unit in heating mode.

Al / Auto operation

Describes the intelligent mode that automatically adjusts heating based on ambient conditions.

Temperature Setting

Controlling desired temperature

Explains how to set target temperatures for various modes and zones.

Select Temperature Sensor

Details the options for selecting temperature sensors (Air, Water, Air+Water) in installer mode.

DHW heating operation

Explains the function to set and control domestic hot water (DHW) heating.

Lock Setting

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

Details how to lock specific buttons or all buttons to prevent unauthorized access.

Timer Setting

Simple Timer

Describes the basic timer function for setting a specific duration of operation.

Turn-On Reservation

Details how to schedule the unit to automatically turn on at a set time.

Turn-Off Reservation

Details how to schedule the unit to automatically turn off at a set time.

Schedule Setting

Schedules & Edit

Describes how to review, modify, or delete existing scheduled operations.

Meter Interface Setting

Information of meter interface

Details how to access and interpret energy and power consumption data.

Function Setting

Wi-Fi Pairing

Explains the process of connecting the unit to a wireless network for remote control.

Water Temperature Setting

Details how to configure target water temperatures for heating and cooling cycles.

Using Thermostat

How to use thermostat

Maintenance and Service

Maintenance activities

Call the service immediately in the following situations

Lists specific critical symptoms and faults that require immediate professional attention.

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