LG Therma V R32 Gen3 Installation And Setup Download Page 15

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Display

code

Title

Cause of error

Check point & Normal condition

Problem in D-pipe temperature sensor

•

Open / Short

•

Soldered poorly

•

Internal circuit error

Bad connection of thermistor connector

Defect of thermistor connector
(Open/Short)

Defect of outdoor PCB(lnverter)

Problem in high pressure sensor

Abnormal value of sensor
(Open/Short)

•

Bad connection of connector PCB(lnverter)

•

Bad connection high pressure connector

•

Defect of high pressure connector
(Open/Short)

•

Defect of connector PCB(lnverter)
(Open/Short)

•

Defect of PCB(lnverter)

Problem in outdoor air temperature sensor

•

Open / Short

•

Soldered poorly

•

Internal circuit error

Bad connection of thermistor connector

Defect of thermistor connector
(Open/Short)

Defect of outdoor PCB(lnverter)

Problem in Cond. middle pipe temperature sensor

•

Open / Short

•

Soldered poorly

•

Internal circuit error

Bad connection of thermistor connector

Defect of thermistor connector
(Open/Short)

Defect of outdoor PCB(lnverter)

Problem in suction pipe temperature sensor

•

Open / Short

•

Soldered poorly

•

Internal circuit error

Bad connection of thermistor connector

Defect of thermistor connector
(Open/Short)

Defect of outdoor PCB(lnverter)

PCB Communication Error

Checking the communication state
between Main PCB and Inverter PCB

•

Generation of noise
source interfering with
communication

High temperature in Discharge pipe of the
inverter compressor

•

Overload operation (Outdoor fan
constraint, screened, blocked)

•

Refrigerant leakage (insufficient)

•

Poor INV Comp Discharge sensor

•

LEV connector displaced/ poor
LEV assembly

•

Check outdoor fan constraint/
screened/ flow structure

•

Check refrigerant leakage

•

Check if the sensor is normal

•

Check the status of EEV assembly

Low pressure Error

Excessive decrease of low pressure

•

Defective low pressure sensor

•

Defective unit fan

•

Refrigerant shortage/leakage

•

Deformation because of damage of
refrigerant pipe

•

Defective unit EEV

•

Covering/ clogging (unit
covering during the cooling
mode/ unit filter clogging during
heating mode)

•

SVC

valve

clogging

•

Defective unit PCB(lnverter)

•

Defective unit pipe sensor

Summary of Contents for Therma V R32 Gen3

Page 1: ...LG Therma V R32 Gen3 Typical Installation with Third Party controls Installation and Setup Monobloc system Rev 1 0 January 14th 2022 ...

Page 2: ...set the room temperature at different times of the day The heat pump controls the domestic hot water temperature itself including for an optional sterilization cycle and is assisted by the immersion heater 2 port valves MUST not to be used upstream of the buffer The hot water control is managed through the LG controller Hot water takes priority over heating There is no electric heater inside the m...

Page 3: ...t we would recommend no less than 2m Allowance for the condensate to soakaway via a soakaway of to drain not to allow ice formation around the unit Anti freeze is recommended to protect again frost damage this should be premixed and added to the system we will go into further detail later The water quality should be tested against LG Requirements The Mains power must be turned on 6 Hours before st...

Page 4: ...y Power supplies sizes are All Electrical cable sizes should be checked on site by a NICEIC qualified electrician The Following Points must be followed o RCD Type C o Rotary Enclosed Isolation switch IP65 o Mandatory electricity meter fitted within an enclosed box o Ensure power cable does not touch refrigerant pipework ...

Page 5: ...t page Connections are made to the directly to the Monoblock via the 1st wiring centre as shown below Wiring back to terminals differs on older models until August 2020 Third Party controls should be wired through terminal 17 L and terminal 20 L2 using a NO Relay Please see below schematic for single Zone operation through 3rd party controls this should be integrated with the above for DHW control...

Page 6: ...firmed with the LG manual All Electrical work should be completed by NICEIC approved Electrician DIP Switch Settings The unit contains a number of DIP switches these must be set prior to powering up the unit in order to allow the unit to operate correctly and to allow some features to function The Dip Switches are laid out as the diagram below SW2 1 Off Master 2 Off 3 ON unit Outdoor Unit DHW tank...

Page 7: ...rature setting but an offset that can be applied to the default value of 0 as shown in the previous slide When the function is activated the default value is 5 Example if setting 10 is used entering water temp for judgment is reduced from 15 to 5 for protection starting entering water for condition release is reduced from 18 15 3 to 8 5 3 Pre Start Check Please check the following prior to startin...

Page 8: ...th OK 2 Use the Right hand button Select Setting Press and Hold the up Button for 3 Seconds 3 4 square boxes are shown enter the Password this is the software version in the right hand bottom corner of the screen You are now in the Installer Configuration menu The following setting need to be set for Basic operation Software Version ok ok Min Max 30 50 55 RADS 40 45 UFH ok ok ...

Page 9: ...W www seconrenewables com T 0191 516 6554 E info seconrenewables com ok Use Sun 1 00am ok ok ok 60 30 Force end time 1 ok Main Booster Heater ON ok ok 60 0 60 ok ok AS ABOVE ok ...

Page 10: ...8 C with a Design Flow temp of 50 C for Radiators Controler Video LG Therma V R32 Monobloc Installer Setting Guide Bing video Function Description Range Default Set Outdoor 1 Heat OUT 1 Heating Lower ambient Temp 25 35 c 10 c 2 8 c Outdoor 2 Heat OUT 2 Heating Higher ambient Temp 16 c 19 c Water1 Heat LW1 Heating higher Water Temp Dependant on Field Settings 35 c 50 c Water2 Heat LW2 Heating Lower...

Page 11: ...u Select Pump test run To use this function the antifreeze short pin must be open and switch No 2 in Option SW 3must be on Please See Earlier Section Regards Antifreeze Levels Through out this process the Flowrate should be observed to check it meet MI The system should be vent of air and check that it is full of water ...

Page 12: ...on the unit does not operated for the sake of system protection Wait while unit warms up to 18 C the water inlet temperature If you are not using the back up heater accessory HA 1M E1 increase the water temperature with theexternal heat source heater boiler If the problem persists contact your dealer If you want to use the screed drying function be sure to purchase and install back up hater access...

Page 13: ...ter fault Sensor fault Wire connection between remote controller and Main PCB assembly Heater should be tight Output voltage of PCB should be12 V DC 5 Bad communication between Main PCB assembly Heater and Main PCB assembly lnverter of the unit The connector for transmission is disconnected The connecting wires are misconnected The communication line is broken Main PCB assembly lnverter is abnorma...

Page 14: ... Connection Check Input Voltage Check PCB DC Link voltage sensor parts 24 Low High PressureSwitch Perception Error Low pressure is below 0 2 kgf cm2 High pressure is above 42 44kgf cm2 Pressure switch is self defective Check the low high pressure Check the connection of harness 26 DC CompressorPosition Compressor Starting fail error Check the connection of comp wire U V W Malfunction of compressor...

Page 15: ...rmistor connector Open Short 3 Defect of outdoor PCB lnverter 46 Problem in suctionpipe temperature sensor Open Short Soldered poorly Internal circuit error 1 Bad connection of thermistor connector 2 Defect of thermistor connector Open Short 3 Defect of outdoor PCB lnverter 52 PCB CommunicationError Checking the communication state between Main PCB and Inverter PCB Generation of noise source inter...

Page 16: ... EBR37798112 21 Check the soldered condition in the 22 23 pin of 1PM PFCM Check the screw torque of 1PM PFCM Check the spreadable condition of thermal grease on1PM PFCM Check the outdoor fan is driving rightly 65 Problem in HeatsinkTemperature sensor Abnormal value of sensor Open Short Check if there is defect of thermistor connector Open Short Check defect of outdoor PCB lnverter Display code Tit...

Page 17: ...ment for intervention Equally if any sediments are in the hydronic pipework they will be caught by the internal strainer Blockages in thestrainer can cause CH14 alarms In this case the strainers will need to be cleaned Recommendation once the unit has been installed advise the customers that it is quite likely and normal for a CH14 alarmto occur in the first two weeks This will give the customer r...

Page 18: ...6554 E info seconrenewables com Have you visited our web shop yet www seconrenewables com Secon Renewables Unit 87 Business Innovation Centre Wearfield Sunderland SR5 2TH T 0191 516 6554 E info seconrenewables com W www seconrenewables com ...

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