Airwell AWAU-YWC220-H13 Installation Manual Download Page 42

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Electric wiring and the application

BM2 introduction

BM2-1 Quiet running

function

System functions normally without quiet function

Quiet running functions

BM2-2 NO definition

Default is 0, 1 is forbidden

BM2-3

BM2-4

Power

suppression

operation

setting

BM2_3

BM2_4 Maximum allowable output capacity

100%

70%

40%

BM2-5

Water

temperature

operating

range

Standard

The extremely low temperature type

BM2-6 NO definition

Default is 0, 1 is forbidden

BM2-7

BM2-8

Piping length

selection

BM2-7

BM2-8 Piping length selection

Default setting (Medium piping length)

Long piping length

Short piping length

Default setting (Medium piping length)

Summary of Contents for AWAU-YWC220-H13

Page 1: ...ation Manual for Outdoor Unit AWAU YWC220 H13 AWAU YWC280 H13 AWAU YWC335 H13 No 0150529053 Please read this manual carefully before using Keep this operation manual for future reference Original instructions ...

Page 2: ...humidity 80 Indoor temperature 17 32 C 15 30 C Water inlet temperature 7 45 C Rated water flow 8HP 4 8m3 h 10HP 6 0m3 h 12HP 7 2m3 h Contents Safety 1 Installation instruction 4 Product introduction 7 Exterior and installation dimensions 16 Installation procedure 21 Electric wiring and the application 34 Failure code 53 Commissioning and the performance 62 Move and scrap the air conditioning 64 Wa...

Page 3: ...cessory should be installed on the outlet water pipe In winter if you do not use for short periods of time please ensure the machine 24 hours power on if you do not use for a long time drain off the water in the system prevent frost crack system When installing or moving the unit the refrigerant system should be vacuumed and recharged with R 410A refrigerant If any other gas enters the system it m...

Page 4: ...gerant leakage R 410A is the only permitted refrigerant To avoid charging wrong refrigerant the diameter of check valve is changed for R 410A To strengthen the pipe the dimension of flared pipe is also changed Please use R 410A specified tools as shown below R 410A specified tools Remarks 1 Gauge manifold Range HP 4 5MPa LP 2MPa 2 Charge hose Pressure HP 5 3MPa LP 3 5MPa 3 Electronic weight meter ...

Page 5: ...ference between Twi and Two is too large the unit will standby and alarm 100 seconds later resume automatically if it occurs three times in an hour confirm the failure If the inlet water temperature is below 10 C or the outlet water temperature is below 4 C in order to avoid the heat exchanger cracking due to the freezing water the following measures must be implemented The least inlet water flow ...

Page 6: ...ction of each indoor unit 2 3 Check the wired controller wires connection of each indoor unit 2 4 Set Protocol translator DIP switches if connected with central controller or BMS system 2 5 Check the central controller or BMS setting if the central controller or BMS device is used 2 6 Check the power cables connection of each outdoor unit 2 7 Check the P Q connection and the communication among ou...

Page 7: ...o Name Quantity 1 Flow switch 1 2 Installation manual 1 3 T shape pipe only use for multiple modules 1 4 Pipe adaptor 1 10HP 2 2 Before installation 1 Before installation check respectively if the model power supply pipes wires and accessories purchased are correct 2 Check if the indoors and outdoors can be combined as the following Outdoor Indoor Gather pipe Capacity 100W Combination type Indoor ...

Page 8: ... 1 Do not install the unit at the place where the flammable gas will leak 2 Install the unit at the strong enough place 3 Install the unit at the flat place 4 After opening the electric box cover for maintenance please fix the cover with screw firmly 4 Transportation During transportation please don t unwrap the packaging and move the unit to the installation location as closely as possible Don t ...

Page 9: ...pared with the air air heat pump series because of its low condensing temperature Individual measure of electricity consumption on this VRF equipment is available For example when the building is occupied by different tenants the electricity charge and maintenance cost can be counted separately Cooling and heating simultaneously in combination system can achieve inner balance of the energy save th...

Page 10: ...xpansion tank Circulating pump Circulating pump Circulating pump Water inlet 30 C Water inlet 30 C Water inlet 30 C Water outlet 35 C The outdoor units Expansion tank Boiler Circulating pump Circulating pump Circulating pump Water inlet 20 C Water inlet 20 C Water inlet 20 C The outdoor units Water outlet 15 C ...

Page 11: ...h is placed below the electrical box please out during installation b Note the direction of the flow switch can t install vertical downward c The straight pipe length L1 and L2 should be not less than 160 mm or it will affect the control precision d When connect wiring please cut off power supply e Prohibit change flow switch settings f Please connect to the earth after connect wiring don t forget...

Page 12: ...ering now Therefore the electronic water treatment meter is preferred in the cooling water system design You will experience accumulation of sludge in the Water Cooled VRF water system after operation caused by dust in the air which needs regular cleaning generally one time a year Professional central AC water system cleaning agent is recommended Water quality control Item Standard requirements In...

Page 13: ...ket 9 Refrigerant gas side 10 Refrigerant liquid side 11 Oil balance connecting pipe 12 Power wire and pump control line 13 Communication wire and flow switch control line 1 Install a Y shape water filter in the inlet of water piping within a distance of 1 5 m from the outside unit Filter demand Water pipe Pipe size of filter Liquid Max pressure recommended mesh DN32 1 1 4 inch Water 1 6 MPa 40 in...

Page 14: ...p is installed in the water system need starter The unit only offers the pump control signal doesn t offer the pump power supply 12 Between the welding mouth of double pipe heat exchanger and site pipe should use flexible joint to reduce the vibration 13 For the convenience of maintenance and repair install the hydraulic pressure gauge and thermometer at the inlet and outlet pipe mouth 14 The pipe...

Page 15: ... factory or civilian steam system Below diagram shows the piping work when system runs in heating mode in winter The connection of thermal source and cooling tower Electronic treatment device TCV Water pump Water filter Expansion tank Gate valve 1 Gate valve 3 Gate valve 2 Heat exchanger Circulation water inlet Heat source Circulation water outlet Cooling tower Connecting hose Gate valve Pressure ...

Page 16: ...ions water pipe size is not less than double pipe heat exchanger interface size DN32 4 In winter if you don t use for long time be sure to discharge all the water in the system to prevent frost crack system and close the power supply 5 The water inside the double pipe heat exchanger can be discharged through drain valve near inlet water of the double pipe heat exchanger 6 According to the differen...

Page 17: ...below 0 2 stop pickling and discharge the waste pickling liquid into the waste tank d Neutralizing after pickling mixed NaOH Na3P04 and softened water in certain proportion using dynamic circulation method to alkali wash the heat exchanger reach neutralization Discharge the neutralized waste discharged into the waste tank e Water washing After neutralization with clean softened water repeatedly fl...

Page 18: ...2 443 548 605 Ø13 through hole Foundation 72 443 548 605 Ø13 through hole Foundation 200 Ø10 Expansion bolt Concrete foundation Rubber cushion Solid ground or roof Over 300 Over 300 Over 500 Note Rubber cushion s cross sectional area should be greater than 3cm2 or may lead to sheet metal deformation 545 ...

Page 19: ...tes for one outdoor unit Exterior and installation dimensions B Sites for two outdoor units Front Over 500mm Over 900mm Over 1970mm Over 300mm Over 300mm Over 1375mm 995 995 775 775 Over 300mm 571 Over 1850mm ...

Page 20: ...ior and installation dimensions C Sites for three outdoor units Over 300mm Over 300mm Over 300mm Front Over 500mm Over 900mm Over 2450mm Over 1970mm 995 995 995 775 775 775 Over 300mm Over 300mm 571 Over 2925mm ...

Page 21: ... installation dimensions When there are walls around the outdoor units A Sites for one row layout Over 500mm Over 900mm Over 300mm Over 300mm Over 300mm Over 300mm Front Over 3525mm Over 1970mm Over 500mm Over 900mm Over 300mm Over 300mm Over 300mm Front ...

Page 22: ...or and installation dimensions Over 500mm Over 900mm or over 1000mm Over 500mm Over 300mm Over 300mm Over 300mm Front Front Over 500mm Over 500mm Over 500mm Over 900mm or over 1000mm Front Front Front Over 300mm Over 300mm Over 300mm Over 300mm Over 300mm Over 300mm ...

Page 23: ...ding the valve and the pipe cool down the valve with wet towel 5 When the connection pipe and the branch pipe need to be cut down please use the special shears and do not use the saw 6 When welding copper pipe use the phosphor copper welding rod without any welding flux Welding flux will damage the piping system The welding flux containing chlorine will corrode pipe Especially the welding flux wit...

Page 24: ... period Measures Outdoor More than 1 month Flat the pipe end Less than 1 month Flat the pipe end or seal with adhesive tape Indoor Nothing to do with period Outdoor branch pipe Manifold pipe Model Capacity kBtu h Gas pipe Liquid pipe Diameter mm Connecting method Diameter mm Connecting method 07 Ø9 52 Flared Ø6 35 Flared 09 Ø9 52 Ø6 35 12 Ø12 7 Ø6 35 16 Ø12 7 Ø6 35 18 Ø12 7 Ø6 35 24 Ø15 88 Ø9 52 2...

Page 25: ...st manifold pipe Note When the distance from outdoor to the farthest indoor is over 80m the enlarged diameter should be chosen for the main pipe Installation procedure Outdoor capacity Main pipe Enlarged main pipe Gas pipe mm Liquid pipe mm Gas pipe mm Liquid pipe mm 22 4kW Ø19 05 Ø9 52 Ø22 2 Ø12 7 28 0kW Ø22 2 Ø9 52 Ø25 4 Ø12 7 33 5kW Ø25 4 Ø12 7 Ø28 58 Ø12 7 44 8kW Ø28 58 Ø15 88 Ø31 8 Ø15 88 50 ...

Page 26: ...0 1 1 Pipe diameter mm Thickness mm Material O type pipe soft pipe 19 05 1 0 1 0 1 0 1 0 1 1 1 3 1 4 1 5 22 2 25 4 28 58 31 8 34 9 38 1 41 3 Pipe diameter mm Thickness mm Material Hard pipe Installation procedure Model Gas pipe Liquid pipe Oil pipe Diameter mm Connecting method Diameter mm Connecting method Diameter mm Connecting method AWAU YWC220 H13 Ø19 05 Flared Ø9 52 Flared Pipe adaptor Ø9 52...

Page 27: ...pe L1 L3 10m L2 L3 10m Oil equalization pipe L5 L6 10m Height difference between outdoors h 5m Pipe length and height difference 比例 1 000 比例 1 000 Outdoor 1 Outdoor 2 Outdoor 3 Gas pipe L5 L6 L1 L2 L3 L4 h1 200mm 2nd outdoor branch pipe 1nd outdoor branch pipe Oil pipe h ...

Page 28: ...igh Outdoor 2 Outdoor 3 Outdoor 1 Outdoor 2 Outdoor 3 Note a TAS30 includes TAS20 b The gas pipe should be installed horizontal or with slope toward the interior units less than 15degree c Oil trap should be installed on gas pipe upright higher more than 200mm when gas pipe is higher than the outdoor units Outdoor 1 Min 200mm Outdoor 2 Outdoor 3 Gas pipe Gas pipe Gas pipe ...

Page 29: ...ed compressor oil will flow into the lowest outdoor Outdoor 1 Outdoor 2 Outdoor 3 e Incorrect method of installation 1 No oil trap Outdoor 1 Outdoor 2 Outdoor 3 Oil trap upright projecting pipe 200mm high Outdoor 1 Outdoor 2 Outdoor 3 Gas pipe Gas pipe Gas pipe ...

Page 30: ...doors 10 L1 L2 L3 Oil equalization pipe connection 16 24HP 26 36HP Oil equalization pipe Ø9 52mm Oil equalization pipe Ø9 52mm T shape pipe 2 Allowable piping length and height difference between indoor and outdoor When the outdoor unit is installed above the indoor units the maximum height should be 50m Max drop 5m Outdoor 1 Outdoor 1 Outdoor 2 Outdoor 3 L2 L3 L4 L5 L6 L8 A B C D E F L9 L10 L11 L...

Page 31: ...please make the brim as outer roll When doing the piping connection please do the following Please don t let the pipe and the parts in the unit collide each other When connecting the pipes close the valves fully Bend the pipe as large semi diameter as possible over 4 times of the pipe diameter Since the unit is charged with R 410A the expanding oil must be ester oil not the mineral oil Protect the...

Page 32: ...against the water and impurity going into the pipes brazing after being flatted or sealed with adhesive tape When connecting the pipes close the valves fully When welding the valve and the pipes use the wet cloth to cool down the valve and the pipes The refrigerant pipe should be clean The nitrogen should be charged under the pressure of about 0 5MPa and when charging the nitrogen stop up the end ...

Page 33: ... when the temp changes for 1degree pressure will change 0 01MPa as well Correct the pressure e After confirmation of a d if pressure goes down there is leakage Check the brazing position and flaring position with soap Repair the leakage point and take another leakage test 4 After leakage test please make sure to execute the evacuation B Leakage test C Evacuation Evacuate at the check valve of liqu...

Page 34: ...ck valves of indoor outdoor and the check valve will be connected E Additional refrigerant charging Charge the additional refrigerant as liquid state with the gauge If the additional refrigerant cannot be charged totally when the outdoor stops charge it at the trial mode If the unit runs for a long period in the state of lack of refrigerant compressor will occur failure the charging must be finish...

Page 35: ...l be heat insulated all the time and the only exception is when the customer is totally sure the unit will only deliver COOLING The material for gas pipe should endure the high temperature over 120 C which for liquid pipe should be over 70 C The material thickness should be over 10mm When ambient temp is 30 and the relative humidity is over 80 the material thickness should be over 20mm The materia...

Page 36: ... wired controller controls one indoor as shown in above figure indoor 6 indoor 19 indoor and wired controllers are connected by 3 polar wires C 2 to 1 two wired controllers control one indoor as shown in above figure indoor 20 Either of wired controllers can be set as master wired controller and the other is slave wired controller Master slave wired controller and master wired controller indoor ar...

Page 37: ...minal If the water system matches with only one set of units the pump control signal of physical master unit can be connected to the pump starter It is not recommended that multiple control lines control one pump starter F The following is an example that wire connection method for one water system connects with one set of units L N L N pump terminal master units AC contactor coil pump ...

Page 38: ...mm2 Wire length m Circuit breaker A Rated current of residual circuit breaker A Ground fault interrupter mA response time S Ground wire Section mm2 Screw Individual power AWAU YWC220 H13 3N 380 415V 50 60 Hz 6 20 25 25A 30mA below 0 1S 3 5 M5 AWAU YWC280 H13 10 20 32 32A 30mA below 0 1S 3 5 M5 AWAU YWC335 H13 10 20 32 32A 30mA below 0 1S 3 5 M5 Electric wiring and the application Leakage breaker L...

Page 39: ...uch as rating current The wiring of ammeter includes 3 methods Direct connection Connection via current transformer Connection via current and voltage transformers seldom used Direct connection method has low cost as there are no current and voltage transformers employed However if the operation current is out of ammeter current range the transformers are required 3 The recommended ranges of ammet...

Page 40: ...f residual circuit breaker A Ground fault interrupter mA response time S Wire length m Outdoor indoor mm2 Indoor indoor mm2 Communication wire section 20A 30mA below 0 1s 30A 30mA below 0 1s 40A 30mA below 0 1s 50A 30mA below 0 1s 2 core 0 75 2 0mm2 shielded wire 10 and 15 15 and 22 22 and 27 Item 10 3 5 5 5 10 23 20 30 40 50 24 27 42 2 Introduction of DIP switch on outdoor connecting board BM1 BM...

Page 41: ... BM1_3 The setting is 0 or 1 Default is 0 Once powered off unit software shall reset to OFF automatically ignoring BM1_3 setting BM1 introduction BM1 1 Outdoor searching after startup 0 Begin to search outdoor 1 Stop searching outdoor and lock the quantity BM1 2 Indoor searching after startup 0 Begin to search indoor 1 Stop searching indoor and lock the quantity BM1 3 Start up Power on no action D...

Page 42: ...ession operation setting BM2_3 BM2_4 Maximum allowable output capacity 0 0 100 0 1 70 1 0 40 1 1 0 BM2 5 Water temperature operating range 0 Standard 1 The extremely low temperature type BM2 6 NO definition 0 Default is 0 1 is forbidden BM2 7 BM2 8 Piping length selection BM2 7 BM2 8 Piping length selection 0 0 Default setting Medium piping length 0 1 Long piping length 1 0 Short piping length 1 1...

Page 43: ... applied to 084C PCB 0 1 1 Reserved 1 0 0 Reserved 1 0 1 Reserved 1 1 0 Reserved 1 1 1 Reserved BM3 4 3Ph 50Hz 60Hz selection 0 50Hz Single class 1 60Hz BM3 5 BM3 6 BM3 7 BM3 8 Outdoor HP setting BM3 5 BM3 6 BM3 7 BM3 8 Outdoor HP 0 0 0 0 6HP 0 0 0 1 8HP 0 0 1 0 10HP 0 0 1 1 12HP 0 1 0 0 14HP 0 1 0 1 16HP 0 1 1 0 18HP 0 1 1 1 20HP 1 0 0 0 22HP 1 0 0 1 24HP 1 0 1 0 26HP 1 0 1 1 28HP Other s reserve...

Page 44: ...ooling only 1 0 Heating only 1 1 VIP BM4 6 BM4 7 BM4 8 Indoor units priority setting Not suitable for 3 pipes model Available when the outdoors are set in normal or VIP mode BM4 6 BM4 7 BM4 8 Priority setting Group class valid for physical host 0 0 0 First priority 0 0 1 Last priority 0 1 0 Cooling priority 0 1 1 Heating priority 1 0 0 Majority priority 1 0 1 Reserved first priority 1 1 0 Reserved...

Page 45: ...splay 3 Communicates in inspection and program version Communication normal display program version Communication gap normal display 0000 communication has been display not normal 4 Indoor abnormal Display indoor failure code no failure display 0 5 Indoor capacity Indoor capacity 1 5HP displays 1 5 6 Indoor EEV opening angle Electronic expansion valve EEV opening angle 7 Indoor ambient temp Tai Am...

Page 46: ...inquiry state 10 failures happened recently can be checked Blinking display the failure number and code Press SW2 UP once to show the next one and press SW1 DOWN once to show the previous one Exit the setting mode automatically after 2 mins Press SW1 DOWN for 2 secs continuously displaying 0000 to exit the inquiry state and stop blinking DIP switch plate shows 13 0 0 Press SW2 UP for 2 secs contin...

Page 47: ...for 2 secs continuously displaying 0000 to exit the setting state and stop blinking 8 0 Outdoor LEVa2 valve open angle 9 0 Outdoor LEVb1 valve open angle 10 0 NO use 11 0 Outdoor solenoid valve output indication LD1 4WV 1 on 0 off the far left side of the high position LD2 SV1 1 on 0 off 12 0 Outdoor solenoid valve output indication LD1 SV6 1 on 0 off the far left side of the high position LD2 SV9...

Page 48: ...on Digital tube LD1 4 display Unit No 0 3 0 15 P1 pressure Unit kg 2 decimals 1 15 Pl_temp pressure temp 25 Unit degree 2 15 Pd_temp pressure temp 3 15 Ps_temp pressure temp 4 15 Tliqsc temp 5 15 Tsco temp 6 15 INV compressor ON OFF time Unit minute 7 15 Inverter power supply current Unit A 1 decimal 8 15 inv compressor current 9 15 Fixed frequency compressor 1 current 10 15 Fixed frequency compre...

Page 49: ...rs ON under heating LD3 LD4 total capacity of indoors with temp sensors ON under heating excluding capacity correction of closed temp sensors unit Hp Eg 0624 represents 6 indoors with temp sensors ON under heating and total capacity is 24Hp excluding capacity correction of closed temp sensors 0 6 2 Target cooling temp Unit degree 0 7 2 Target heating temp 0 8 2 Refrigerant evacuation Setting Only ...

Page 50: ...continuously display 1111 and start up Press SW1 DN for 2 secs continuously display 0000 and stop 0 15 2 Cancel all manual controls running type Press SW2 UP for 2 secs continuously display 1111 and start up Press SW1 DN for 2 secs continuously display 0000 and stop Cancel items wrong wiring inspection in cooling heating mode indoor unit running stop totally compulsory operation rated operation et...

Page 51: ...supply check 50Hz 60Hz setting 50 50Hz 60 60Hz 15 13 2 Inverter board selection 0 self made 1 APY 15 14 2 Outdoor model setting 0 3 pipes model 1 MX6 S model 2 Water Cooled VRF 15 15 2 Reserved 1 0 2 Communication baud rate of indoor and outdoor units 9600bps 1 1 2 1 round circulating VB and correct communicating qty of indoor units LD1 LD2 qty of VB 3 pipes model LD3 LD4 qty of indoor units Eg 02...

Page 52: ...control 4WV2 switch 6 15 2 Cancel all the manual control spare parts Press SW2 UP for 2 secs continuously displaying 1111 to cancel or press SW1 DOWN for 2 secs continuously displaying 0000 to cancel Cancelled items The manual control of compressor fan motor EEV LEV Solenoid valve and all the other outdoor active spare parts including air evacuating and charging setting excluding running modes rat...

Page 53: ... EE s later 256 byte data display malfunction info Address calculating method addr SW10 16 SW11 Data display hexadecimal H represents hexadecimal number Dial plate shows 13 0 0 Press SW2 UP for 2 secs continuously to eliminate EE s later 256 byte data 0 1 101H address s EE data 1 15 11FH address s EE data 15 15 1FFH address s EE data PCB Special No Description SW9 SW10 SW11 Description 15 0 0 084D...

Page 54: ...ion Reserved part SW9 SW10 SW11 Function 4 0 15 0 15 5 0 15 0 15 14 0 15 0 15 1 2 15 2 2 3 0 15 2 6 0 15 0 1 3 15 7 0 15 0 3 15 8 0 15 0 3 15 9 0 15 0 3 15 10 0 15 0 3 15 11 0 5 15 11 1 10 4 15 11 11 15 0 15 15 0 1 3 15 15 1 15 0 1 3 15 ...

Page 55: ... SW10 SW11 are at 0 0 0 LD displays failure code 20 127 it is single slave unit failure code Outdoor failure code display principle on wired controller When outdoor compressor is running indoor wired controller will display the failure code of outdoor with higher priority When compressor stops it displays all indoor failures The indoor failures will be classified as below sensor failure inverter b...

Page 56: ...open circuit or above 1012 short circuit alarm If Tao 0 no open circuit failure alarm if Tao 0 and ET 0 no open circuit failure alarm in 5 minutes Resumable 24 1 18 Oil temp sensor Toili failure AD value is below 11 open circuit or above 1012 short circuit alarm If Tao 0 or not in the normal running condition no open circuit failure alarm 25 0 19 Inlet temp of heat exchanger toci1 failure AD value...

Page 57: ...s in defrosting and within 3 minutes after defrosting no alarm Resumable 30 0 1E High pressure switch HPSi failure Power on OFF is confirmed for 2 secs continuously alarm Once confirmation Un Resumable 30 1 1E High pressure switch HPS1 failure 30 2 1E High pressure switch HPS2 failure 30 3 1E Water flow switch WQS failure Water Cooled VRF Disconnected for 10 secs continuously alarm Three times an ...

Page 58: ...esumable 35 1 23 4WV reversing failure Master unit checks heating mode operation If some slave units 4WV still can t electrified after starting up for 20 mins failure 35 1 is shown 36 24 Oil temp sub cooling protection Toili Normally in operation excluding startup deforest oil return remains stop detect Toil CT 10 C for continuous 5 mins stop and alarm Resume automatically after 170 secs Lock if a...

Page 59: ...s stop and alarm Resume automatically after 170 secs Three times an hour failure confirmed Once confirmation Un Resumable 41 1 29 Water inlet temp Twi protection against too high temp Water Cooled VRF When BM1 4 ON setting Water Cooled VRF after compressor starts up water inlet temp Twi 45 degree continues for 60 secs stop and alarm Resume automatically after 170 secs Three times an hour failure c...

Page 60: ...thin 3 minutes continuously Resumable 46 2E Communication with inverter module failure No communication within 30 seconds continuously Resumable 50 32 The LEV is leakage When the unit system running in heating mode the LEV of the stop unit is leakage Un Resumable 75 0 4B Small drop between high pressure and low pressure If Pd Ps 0 35MPa continues for 3 mins this outdoor will be stopped for protect...

Page 61: ... DIP switch setting failure According to PCB special No outdoor model DIP switch errors are detected 99 X 63 Program errors self check X 0 5 Once confirmation un resumable 110 6E IPM module protection FO There are over current hardware type short circuit over heat and under voltage of IPM module Four times an hour then failure confirmed Once confirmation un resumable 111 6F Inverter compressor out...

Page 62: ...er 121 79 Power supply of inverter board is abnormal Power supply of inverter board is broken down instantly 3 times in an hour confirm failure once confirmation un resumable 122 7A Radiator temp Sensor of transducer abnormal Resistor of temp sensor abnormal or temp sensor disconnected 125 7D Compressor frequency unmatch Current frequency INV target frequency 3Hz or target frequency 0 actual frequ...

Page 63: ... models the unit can t open if ambient temp above 54 degree 7 segment board display 555 3 Indoor failure code list Indication on master unit Indication on wired controller Flash times of LED5 on indoor PCB timer LED on remote receiver Failure code definition 01 01 1 Indoor ambient temp sensor Ta failure 02 02 2 Indoor coil temp sensor Tc1 failure 03 03 3 Indoor coil temp sensor Tc2 failure 04 04 4...

Page 64: ...edly the unit cannot run in the other modes To use the unit properly please operate the unit under the allowed condition range If operating beyond the range the protection device will act The relative humidity should be lower than 80 If the unit runs at the humidity over 80 for a long period the dew on the unit will drop down and the vapour will be blowed from air outlet High pressure switch is th...

Page 65: ...e heating mode adopts the heat pump type that absorbs outdoor heat energy and releases into indoor So if outdoor temperature goes down the heating capacity will decrease Confirm the compressor bottom getting hot Except for the condition that there is only one master unit connected no slave unit under the other conditions fully open the outdoor operating valves gas side liquid side oil equalization...

Page 66: ...conditioning the content of lead mercury hexavalent chromium polybrominated biphenyls and polybrominated diphenyl ethers are not more than 0 1 mass fraction and cadmium is not more than 0 01 mass fraction Please recycle the refrigerant before scrapping moving setting and repairing the air conditioning for the air conditioning scrapping should be dealt with by the qualified enterprises ...

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