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Installation

Installation Manual

21

ENGLISH

Water In

Strainer

Front

Side

45°

Strainer

- Use the 50 mesh strainer.

(Exclude scale diameter of 0.4mm or less and other net)

- Check the strainer direction and assemble on the inlet hole (Refer to picture)
- Wrap the Teflon tape on the screw thread of the water pipe for more than 15 times for assembly.
- Install the service port facing downward. (Within left/right 45 degrees)
- Check if there is any leakage on the connecting part.
- Clean the strainer periodically. (Once a year or more frequent)

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Содержание AHNW166T0

Страница 1: ...on manual for future reference after reading it thoroughly Air to Water Heat Pump For High Temperature 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 For more information Refer to the CD...

Страница 2: ...TDOOR UNIT 27 CAUTIONS FOR HANDLING SERVICE VALVE 28 SELECTION OF REFRIGERANT PIPING 29 THE AMOUNT OF REFRIGERANT 29 LEAK TEST AND VACUUM DRYING 30 HOW TO CONNECT WIRINGS 33 CONNECTION METHOD OF THE CONNECTING CABLE EXAMPLE 34 CONNECTING CABLES 38 COMMUNICATION AND POWER CABLE 39 WIRING OF MAIN POWER SUPPLY AND EQUIPMENT CAPACITY 40 5 ACCESSORIES INSTALLATION 41 LOCATION OF ACCESSORIES AND EXTERNA...

Страница 3: ...s injury This symbol indicates the possibility of injury or damage to properties only n Installation Be sure not to do Be sure to follow the instruction Do not use a defective or underrated circuit breaker Use this appli ance on a dedicated circuit There is risk of fire or electric shock For electrical work contact the dealer seller a qualified elec trician or an Author ized Service Center There i...

Страница 4: ...could fall with it causing property dam age unit failure and per sonal injury Do not install the water pipe system as Open loop type It may cause failure of unit Do not install the In door Unit outside It may cause damage to the unit Use a vacuum pump or inert nitrogen gas when doing leakage test or purg ing air Do not compress air or oxygen and do not use flammable gases There is the risk of deat...

Страница 5: ...r use flammable gas or com bustibles near the unit There is risk of fire or failure of unit Do not use the unit in a tightly closed space for a long time It may cause damage to the unit When flammable gas leaks turn off the gas and open a window for ventilation before turn ing the unit on There is risk of explosion or fire n Operation If strange sounds or small or smoke comes from unit turn the br...

Страница 6: ...it directly There is risk of fire elec tric shock or unit dam age Ventilate the unit from time to time when oper ating it together with a stove etc There is risk of fire or electric shock Turn the main power off when cleaning or main taining the unit There is risk of electric shock Take care to ensure that nobody could step on or fall onto the unit This could result in per sonal injury and unit da...

Страница 7: ...the unit Avoid personal injury Do not use the unit for special purposes such as preserving foods works of art etc There is risk of damage or loss of property Use a soft cloth to clean Do not use harsh deter gents solvents etc There is risk of fire elec tric shock or damage to the plastic parts of the unit Do not step on or put anything on the unit There is risk of personal injury and failure of un...

Страница 8: ...epresentative 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 For more information Refer to the CD or LG Web site www lg com P NO MFL67212813 P NO MFL67212706 www lg com OWNER S MANUAL AIR CONDITIONER P...

Страница 9: ...ize the range of the application Model name and related information 1 Tested under Eurovent Heating condition water temperature 55 131 65 149 at outdoor ambient temperature 7 44 6 42 Type Air to water Heat Pump For High Temperature Model Unit AHNW166T0 Indoor AHUW166T0 Outdoor Power Supply Ø V Hz 1 220 240 50 Capacity Heating kW 16 kcal h 13 760 Btu h 54 600 Net Weight kg lbs 88 194 98 216 Refrige...

Страница 10: ...s not applied to the unit Attach the ropes to the unit at an angle Ⓐ of 40 or less Use only accessories and parts which are of the designated specification when installing Sub line 40º or less Line supporter 1 Indoor Unit Air outlet grille Intake hole Corner Handle Always hold the unit by the corners as holding it by the side intake holes on the casing may cause them to deform Sub line 40 or less ...

Страница 11: ... animal from accessing the outdoor unit If installation site is area of heavy snowfall then the following directions should be observed Make the foundation as high as possible Fit a snow protection hood 2 Select installation location considering following conditions to avoid bad condition when addition ally performing defrost operation Install the outdoor unit at a place well ventilated and having...

Страница 12: ... space Unit mm Air inlet grille 500 Strong wind Strong wind Blown air 3 When installing the outdoor unit in a place that is constantly exposed to a strong wind like a coast or on a high story of a building secure a normal fan operation by using a duct or a wind shield Install the unit so that its discharge port faces to the wall of the building Keep a distance 500mm or more between the unit and th...

Страница 13: ...r 100 or more 500 or less more 1000 or 150 or more 150 or 150 or more more 500 or less more 1000 or 300 or more 100 or more 200 or more 1000 or more 300 or more 100 or more 1000 or more 200 or more Unit mm Unit mm 2 Outdoor Unit The following values are the least space for installation If any service area is needed for service according to field circumstance obtain enough service space The unit of...

Страница 14: ...ide Ú Obstacle height of discharge side is higher than the unit 1 Stand alone installation 2 Collective installation H L L H L H 100 or more 500 or more 500 or less more 1000 or L H 250 or more 1000 or more Unit mm 500 or more 500 or less more 1000 or 500 or more 1000 or more 500 or less 1000 or more 1000 or more 100 or more 100 or more Unit mm ...

Страница 15: ...d alone installation L H L H H L 300 or more 1500 or more 500 or less more 1000 or H L 300 or more 1500 or more 100 or more 100 or more Unit mm L H L H H L 100 or more 500 or more 500 or less more 1000 or H L 300 or more 1000 or more L H L H L H 300 or more 1000 or more 500 or less more 1000 or L H 300 or more 1250 or more 5 5 5 100 or more 100 or more Unit mm ...

Страница 16: ...duct 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 Install the outdoor unit not to come in contact with snow directly If snow piles up and freezes on the air suction hole the system may malfunction If it is installed at snowy area attach the hood to the system Install the outdoor unit at the hi...

Страница 17: ...material Concrete base Support 3 or more screw threads of the 2 bolts must be shown Unit mm 354 392 1 Indoor Unit 2 Outdoor Unit Unit mm Foundation bolt executing method 200 Nut 75 75 200 Spring washer Frame Anti vibration materials Four bolt are required 3 thread ridges H Beam Concrete base 100 Check the strength and level of the installation ground so that the unit will not cause any operating v...

Страница 18: ...avoid dust entering When cutting or welding the pipe always be careful that inner section of the pipe should not be defective For example no weldments or no burrs are found inside the pipe 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 tefron tape rubber bus...

Страница 19: ...ent diameter of 0 4mm or less Exclude other net Always install the strainer on the horizontal pipe When dirt trash rusted pieces get into the water pipe system it can cause problems to the product by corroding the metallic material 6 Install the air vent 5 at the top of the water pipe 7 Install a thermometer 6 and pressure gauge 7 at the inlet and outlet of the water pipe 8 Install the drain valve...

Страница 20: ...nd sup ply the water 7 When installing the water tank insert the water tank temperature sensor 7 to measure the tem perature of the water inside the tank For the water tank temperature sensor use the sensor supplied on the product When heating the floor measure the temperature by using the remote controller or remote tem perature sensor Separately sold 8 Use the water tank 9 with the heat exchange...

Страница 21: ... net Check the strainer direction and assemble on the inlet hole Refer to picture Wrap the Teflon tape on the screw thread of the water pipe for more than 15 times for assembly Install the service port facing downward Within left right 45 degrees Check if there is any leakage on the connecting part Clean the strainer periodically Once a year or more frequent ...

Страница 22: ...rating clean hot water Near the sanitary water tank there should be water supply and water drain for easy access and maintenance Sanitary Water Tank and Sanitary Water Tank Kit Sanitary Water Tank Water Tank Temperature Sensor Water In Water Out PT 1 2 inch Process PT 1 2 inch female bolt Inside water tank Water tank outer wall Water Tank Temperature Sensor Sensor holder If hot water mode is used ...

Страница 23: ...es in staller should optimize the installation scene according to the installation conditions 1 Floor Heating only 2 Floor Heating Hot water 3 Hot water only Floor heating loop Fan coil unit Radiator Floor heating loop Fan coil unit Sanitary water tank Hot water City water Radiator Sanitary water tank Hot water City water Pump 3way valve Bypass valve ...

Страница 24: ...Nitrite 0 50 mg l Pesticides 0 10 μg l Pesticides Total 0 50 μg l Polycyclic aromatic hydrocarbons 0 10 μg l Selenium 10 μg l Tetrachloroethene and Trichloroethene 10 μg l Trihalomethanes Total 100 μg l Vinyl chloride 0 50 μg l CAUTION If the unit is installed at existing hydraulic water loop it is important to clean hydraulic pipes to remove sludge and scale Installing sludge strainer in the wate...

Страница 25: ...thick oxidized coating within the pipe to interfere with normal operation of valve and compressor etc Insulation Use rubber foamed insulation material EPDM NBR with high thermal resistance When installed in humid environment use thicker insulation material than usual Insert the insulation material within the prod uct as deep as possible h The thickness of the above insulation material is based on ...

Страница 26: ...or four times at first Use ester oil or ether oil See the following table for tightening torque Applying too much torque may cause the flares to crack After all the piping has been connected use nitrogen to perform a gas leak check CAUTION Always use a charge hose for service port connection After tightening the cap check that no refrigerant leaks are present When loosening a flare nut always use ...

Страница 27: ...ure 4 Gas side piping Bigger Dia Liquid side piping Smaller Dia Putty or insulating material produced locally Drain hose Connecting wire Connection pipe Connecting the pipes to the outdoor unit Pipe knock out during the ground piping Figure 3 CAUTION You should not dame pipe base during the work of pipe knock out Operate piping work removing burr after pipe knock out Align the center of the piping...

Страница 28: ... u How to use the Shut Off valve Use hexagonal wrenches 4mm or 6mm Opening the valve 1 Place the hexagon wrench on the valve bar and turn counter clockwise 2 Stop when the valve bar no longer turns It is now open Closing the valve 1 Place the hexagon wrench on the valve bar and turn clockwise 2 Stop when the valve bar no longer turns It is now closed Liquid pipe Direction to open Gas pipe Directio...

Страница 29: ... size Indoor Main pipe Size of main pipe Outdoor unit capacity kW Btu h Liquid pipe mm inch Gas pipe mm inch 16 0 54 600 Ø9 52 3 8 Ø15 88 5 8 The calculation of the additional charge should take into account the length of pipe h Chargeless pipe Length 10m Additional charge kg Product charge kg x 0 060 kg m Length m of liquid pipe of Ø9 52mm The Amount of Refrigerant ...

Страница 30: ...test set DIP switch as Vacuum Mode Note If the ambient temperature differs between the time when pressure is applied and when the pres sure drop is checked apply the following correction factor There is a pressure change of approximately 0 1 kg cm2 0 01 MPa for each 1 C of temperature difference Correction Temp at the time of pressurization Temp at the time of check X 0 1 For example Temperature a...

Страница 31: ...ovided on the outdoor unit s service valve to the vacuum pump commonly used for liquid pipe gas pipe Vaccum of the pipe and the indoor units should be made from the port of the outdoor unit s service valve with the service valve closed Never perform air purging using refrigerant Vacuum drying Use a vacuum pump that can evacuate to 100 7kPa 5 Torr 755mmHg 1 Evacuate the system from the liquid and g...

Страница 32: ...ooling mode 3 Charging the refrigerant to gas service valve during operation CAUTION Never charge the refrigerant with service valves closed and unit stopped If charging is carried out with service valves closed and unit stopped the compressor will be damaged When unit starts to run and the unit will display ch26 error If trying to keep running under this condition compressor will be broken ...

Страница 33: ...r cable connection may become loose by the vibration generated during the trans portation Make sure to check again and fasten them tightly If they are loose it may cause fire 4 Make sure to check power specification 5 Electrical capacity shall be sufficient 6 The initial voltage shall be maintained at 90 of the rated voltage on the name plate 7 The thickness of the power cable complies with the de...

Страница 34: ...s around the edges using the repair paint to prevent rusting 3 Pass the connecting cable through the hole 4 Properly connect the cable on the terminal block 5 Fix the connection cable with the cord clamp providing on the unit not to have strain at the terminal WARNING Loose wiring may cause the terminal to overheat or result in unit malfunction A fire hazard may also exist Therefore be sure all wi...

Страница 35: ...or Unit Remote control Indoor Unit Indoor Unit 2 Core Shield Cable Multi Core Cable 1 Caution 1 Follow ordinance of your governmental organization for technical standard related to electrical equipment wiring regulations and guidance of each electric power company 2 Install the Outdoor Unit communication line away from the power source wiring so that it is not affected by electric noise from the p...

Страница 36: ...ading capacitor Make sure that the power unbalance ratio is not greater than 2 If it is greater the unit s lifespan will be reduced Introducing with a missing N phase or with a mistaken N phase will break the equipment When none are available follow the instructions below Do not connect wiring of different thicknesses to the power terminal block Slack in the power cable may cause abnormal heat Whe...

Страница 37: ...f control case using clamps on the sup porter and control case as shown figure right 2 Connect communication cable to main PCB terminal block using clamps on the supporter and main PCB case as shown figure right Communication Cable Power Cable Connection method of the connecting cable Example ...

Страница 38: ...types Cable cross section Indoor Power cable CV mm2 x cores 4 0 x 3 Outdoor Power cable H05RN F mm2 x cores 6 0 x 3 Communication cable VCTF SB mm2 x cores 1 0 1 5 x 2 Safety Breaker Current Recommended Fuses Indoor Unit Outdoor Unit A 30 30 WARNING Are all of the indoor units and outdoor units grounded If grounding is not properly done there is a risk of electric shock Grounding must be done by a...

Страница 39: ... excess of 100m the figures will have to be recalculated in direct proportion to the additional length of line involved 2 If the power supply waveform continues to exhibit some distortion the recommended spacing in the table should be increased If the cable are laid inside conduits then the following point must also be taken into account when grouping various lines together for introduction into t...

Страница 40: ...ax respectively Ssc minimum Ssc value European International Technical Standard setting the limits for voltage changes voltage fluctua tions and flicker in public low voltage supply systems for equipment with rated current 75A European International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low voltage systems with input current 16A of 75...

Страница 41: ...alled by referring to the attached in stallation manual 3way valve thermostat and pump are external parts for installation which are not supplied by Corporation After checking each part carefully install external parts respectively Connect the cable of each accessory to the terminal block of the control box in the AWHP Check the label attached on the terminal block to prevent wrong connection Use ...

Страница 42: ... upper and right side please set up after removing remote controller cable guide groove h Remove guide groove with long nose Reclamation to the surface of the wall Upper part guide groove Right part guide groove 3 Please fix remote controller upper part into the setup board attached to the surface of the wall as the picture below and then con nect with setup board by pressing lower part Please con...

Страница 43: ...When installing the wired remote controller do not bury it in the wall It can cause damage in the temperature sensor Do not install the cable to be 50m or above It can cause communication error When installing the extension cable check the connecting direction of the connector of the remote controller side and the product side for correct installation If you install the extension cable in the oppo...

Страница 44: ...he loss of entire water pressure and to supply the Indoor Unit with water Select a suitable relay for pump capacity when connecting the pump to the unit Connect the relay to the terminal block 11 and 12 of the control box Connect sensor housing to PCB CN TH4 connector red 1 2 L N Pump main Relay Pump Water tank thermistor Housing CN TH4 CAUTION Make sure to supply external power with the pump CAUT...

Страница 45: ... thermal influence may be applied such as above heating radiator or open window CAUTION 1 USE 1 230 V Thermostat 2 Some electro mechanical type thermostat has internal delay time to protect compressor In that case mode change can takes time more than user s expectation Please read thermostat manual carefully if the unit does not response quickly 3 Setting temperature range by thermostat can be dif...

Страница 46: ... cover of the unit and open the control box Step 2 Identify the power specification of the thermostat 1 230V thermostat is used For High Temperature Step 3 If it is Heating Only Thermostat go to step 4 Step 4 Find terminal block and connect wire as below WARNING Mechanical type Thermostat Do not connect wire N as mechanical type thermostat does not re quire electric power supply CAUTION Do not con...

Страница 47: ...on off according to the setting temperature at the remote controller It is turned on off according to the thermostat signal Following features are NOT permitted when thermostat is installed Operating mode heating weather dependent selection Time scheduling Operation On Off NOTICE WATER TEMP OPER HEATING MODE WATER TEMP OPER HEATING MODE WATER WATER TEMP OPER HEATING HEATING MODE WATER TEMP OPER OP...

Страница 48: ...he option code of the attached controller on the indoor unit In detail refer to installer setting mode Step 4 The Connection wire does not matter if you change the color of the wire because of non polar Fixing screws 60mm Fixing the Remote Sensor 2 1 CAUTION 1 Choose the place where the average temperature can be measured for the indoor unit operates 2 Avoid direct sunlight 3 Choose the place wher...

Страница 49: ...Three wires consist of Live for selecting Flow A Live 1 for selecting Flow B and Neutral for common 2 Flow A means water flow from the unit to sanitary water tank 3 Flow B means water flow from the unit to under floor water circuit How to Wire 3Way Valve Follow below procedures Step 1 Step 2 Step 1 Uncover front cover of the unit and open the control box Step 2 Find terminal block and connect wire...

Страница 50: ...res should be almost equivalent if thermal insulation of water pipe is well performed Noise or water pipe vibration while 3way valve operation Due to surging effect or cavitation effect noise or water pipe vibration can be occurred while 3way valve is operating In that case check followings Is water circuit both under floor water loop and sanitary water tank loop fully charged If not additional wa...

Страница 51: ...ooms How to Install Dry Contact Connect CN_DRY with Control Unit To apply power source through Dry Contact PCB Dry Contact Dry contact Controller CN CC DRY CONTACT PCB DRY CONTACT PCB INPUT AC 220V Does not supply this section Does not supply this section 4 4 3 3 2 2 1 1 2 2 1 1 RY1 RY2 CN_DRY N L Operation Display Error Check Display Dry contact Controller CN_DRY 4 3 2 4 3 2 1 1 2 2 1 1 L N AC 22...

Страница 52: ...tric shock Dip switch is turned on when pulled right Always set dip switch 6 to ON and 7 to OFF Do not set dip switch 2 to ON and 3 to OFF If dip switch is not set as below the unit may not operate properly x OFF On Description Dip switch setting Function Default 1 2 3 4 5 6 7 8 Installation Scene x x Floor heating only x Floor heating Hot water Hot water only Emergency operation x High temperatur...

Страница 53: ... In case of 1Ø 16 kW model WARNING Main PCB power should be reset in order to recognize the changed function after handling the DIP switch for configuration of additional functions Main PCB power should be reset after resetting the DIP switch for cancellation of additional function Please configure DIP switch properly Otherwise It can overstrain product during operation CAUTION 1 X mark means DIP ...

Страница 54: ... 7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 CAUTION 1 X mark means dip switch must be off Otherwise the function may not operates correctly 2 If each dip switch doesn t set correctly unit will operate abnormally 3 In case of proceeding test run start after checking if all indoor unit is off 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Short Pipe Length l 5 Long Pipe Length 5 l Snow 5 l 5 Forced Defrosting 5 5 l Snow ...

Страница 55: ...played on wired remote control or indoor unit display window It is not an error message will disappeared when on off button is pressed on remote control ex Display of 01 means connection of 01 indoor units and auto addressing is completed normally Auto addressing start Waiting 3 minutes Power On Press SW02V for 5 s 7 segment LED 88 Waiting about 2 7 minutes 7 segment LED OK YES NO Check the connec...

Страница 56: ...ication lines between outdoor unit and indoor units through the terminal block When connecting communication line between outdoor unit and indoor units with shielded wire connect the shield ground to the earth screw When connecting the central control system with shielded wire connect the shield ground to the earth screw Terminal block on the main PCB SODU IDU INTERNET DRY1 DRY2 B A B D A C GND 12...

Страница 57: ...ble Trouble is classified two levels according to the seriousness of the problem Slight Trouble and Heavy trouble Slight Trouble Sensor trouble Heavy trouble Compressor cycle trouble Option Trouble a problem is found for option operation such as water tank heating In this trouble the troubled option is assumed as if it is not installed at the system Emergency operation level When the system is fac...

Страница 58: ...tes as if slight or heavy trouble is occurred Therefore sometimes sanitary water heating can be impossible in emergency operation mode When sanitary water is not warming up while emergency operation please check whether the sani tary water sensor and related wiring are connected well or not Emergency operation is not automatically restarted after main electricity power is reset In normal condition...

Страница 59: ...d any installation or change that is carried out by a non certificated person should be responsible for the results In this case free service cannot be provided WATER WATER TEMP TEMP OPER OPER HEATING HEATING MODE MODE 1 Function Code Value Press Function Setting button for 3 seconds to enter the installer setting mode When you enter the installer setting mode ini tially function code is displayed...

Страница 60: ...dent operation 25 080 046 65 149 80 176 Upper Limit of setting range 40 104 54 129 Lower Limit of setting range Setting start maintain time Disinfection Operation 26 000 00 Disable 01 Enable 26 006 023 01 07 Starting Date 01 Sun 02 Mon 07 Sat 00 23 hours Starting Time in 24 hours Setting Temp Disinfection Operation 27 070 010 40 104 70 129 70 Maximum heating Temp 05 60 min Maximum heating duration...

Страница 61: ...ature is determined Note Air temperature as setting temperature is ONLY available when Remote Air Sensor Connec tion is enabled and Function Code 03 is set as 02 Function Code 06 Auto Dry Contact This function enables the Dry Contact to operate under Auto Run mode or Manual mode with remote controller If thermostat is used value should be changed from 2 to 1 Function Code 07 Address Setting When C...

Страница 62: ...3 should be set properly Function Code 14 Setting Leaving Water Temperature in Heating Mode Determine heating setting temperature range when leaving water temperature is selected as set ting temperature Function Code 15 Setting Sanitary Tank Leaving Water Temperature Determine heating setting temperature range of water tank leaving water Only available when sanitary water tank temperature sensor i...

Страница 63: ...ion Code 23 range of outdoor air temperature Value 1 and Value 2 of Function Code 24 range of auto adjustable target room air temperature Value 1 and Value 2 of Function Code 25 range of auto adjustable target leaving water tem perature Note Weather dependent operation is applied for heating mode only Value 1 of Function Code 23 Auto Adjustable Target Temperature Outdoor air temperature Temperatur...

Страница 64: ... mode Value 2 of Function Code 27 Duration of disinfection mode WARNING Vales of Function Code 26 If Value 1 of Function Code 26 is set as 00 Value 2 and Value 3 is not used When Value 1 is set as 01 Value 2 is displayed at the position of Value 1 and Value 3 is displayed at the position of Value 2 due to limited width of the control panel display CAUTION Sanitary water heating should be enabled I...

Страница 65: ...le If user s target temperature is set as 50 and Value 1 is set as 3 then water tank heating will be turned off when the water temperature is above 53 C 127 F Water tank heating will be turned on when the water temperature is below 50 C 122 F Example If Value 2 is set as 0 that means heating priority is on sanitary water heating In this case the under floor can not be heated while sanitary water h...

Страница 66: ...egarded as time gap between sanitary tank heating cycle Example of timing chart Function Code 2E and 2F Changing thermal on off temperature Select Thermal on off Temperature gap Function Code 30 Remote Controller Program Version Display Remote Controller Program Version Sanitary tank heating is enabled Sanitary tank heating is required Sanitary tank heating operation Time 2B 01 2B 01 2B 02 2B 02 2...

Страница 67: ...are stopped and 938 is displayed after 90 seconds 7 To perform FDD logic test proceeds when 3 minutes passed after reset Step 0 Check order signal Select the function of tust run Step 1 Sensor checking Check sensor abnormality Step 2 Refrigerant auto charging In case of adding additional refrigerant this function helps adding refrigerant automatically Step 3 Refrigerant checking Check refrigerant ...

Страница 68: ...een the terminal block and ground is measured with DC mega tester DC 500V Never check insulation resistance for the connector of the control board Caution before Operation Test Operation Test of Water Pipe Category Status Checkpoint Flow Switch Error CH14 Check whether operation of water pipe is normal Check for the block inside water pipe Strainer cleaning valve locked valve malfunction air remai...

Страница 69: ...oes not receive the signal from indoor unit during specific time CH05 Indoor unit outdoor unit communication error No signal communication between indoor unit out door unit CH08 Water tank temperature sensor error Water tank temperature sensor disconnection or short circuit CH09 Indoor unit EEPROM error Communication between the micro processor the EEPROM Error due to EEPROM damage CH11 Indoor uni...

Страница 70: ...of inverter compressor Excessive drop of low pressure of inverter compres sor causing compressor OFF bc36 Low pressure ratio error of inverter compressor High pressure low pressure ratio of inverter compres sor is maintained at below 1 8 for 3 min or more bc40 Inverter compressor CT sensor defect Inverter compressor CT sensor defect bc41 Inverter compressor discharge pipe temperature sen sor defec...

Страница 71: ...t at inverter input 2 8 1 Inverter DC Link high voltage error Inverter DC voltage recharge causing compressor OFF 2 9 1 Inverter compressor overcurrent Inverter compressor activation failure or increase of CT value 3 2 1 Excessive rise of inverter compres sor discharge temperature Excessive rise of inverter compressor dis charge temperature causing compressor OFF 3 4 1 Excessive rise of high press...

Страница 72: ...ter PCB EEPROM error 6 2 1 Excessive rise of inverter heatsink temperature Inverter PCB heat generation causing the rise of heatsink temperature 6 7 1 Outdoor Unit Fan Lock Restriction of Outdoor Unit Fan 7 3 1 Overcurrent Peak detected at in verter input Error by overcurrent detection at inverter input 8 6 1 Outdoor Unit Main PCB EEPROM Error Communication Fail Between Outdoor Unit Main MICOM and...

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