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Troubleshooting

2.4.2.13. P7 malfunction

P7 display

High temperature protection of

evaporator

High temperature protection of

evaporator

Whether compressor

operates?

Whether compressor

operates?

Yes

Check whether the outdoor

ambient temperature is higher

than 30

℃

Check whether the outdoor

ambient temperature is higher

than 30

℃

Correct the connection

Check the connection

between T2 and PCB.

Check whether T2 and T2B

Is reversed

Check the connection

between T2 and PCB.

Check whether T2 and T2B

Is reversed

Check whether the

resistance of T2 is normal

refer to the

Appendix

Check whether the

resistance of T2 is normal

refer to the

Appendix

Replace the temperature sensor

Yes

Stop the unit

Yes

Check whether the air-outlet is

blocked?

Check whether the air-outlet is

blocked?

Check whether the heat

exchanger and filter are

dirty

？

Check whether the heat

exchanger and filter are

dirty

？

Check whether the indoor fan

is running normal?

Check whether the indoor fan

is running normal?

Yes

Clean the air-outlet

Replace the indoor main

PCB

Replace the indoor main

PCB

Clean the heat exchanger and filter

Yes

please refer to the solution of fan

speed has been out of control

malfunction . Find out the cause and

have it solved.

please refer to the solution of fan

speed has been out of control

malfunction . Find out the cause and

have it solved.

Electrical Control System

Summary of Contents for ICS0629C21

Page 1: ...SERVICE MANUAL IOS629C2V01 IOS736C2V01 IUS0736C21 ICS0629C21 ICS0736C21 AIR CONDITIONER i ...

Page 2: ......

Page 3: ...Contents CONTENTS Part 1 General Information 1 Part 2 Indoor Units 5 Part 3 Outdoor Units 32 Part 4 Installation 41 Part 5 Electrical Control System 64 Contents i ...

Page 4: ......

Page 5: ...n Part 1 General Information 1 Model Lists 2 2 External Appearance 3 2 1 Indoor Units 3 2 2 Outdoor Units 3 3 Features 4 1 1 Definition 65 1 2 Main Protection 65 1 3 Operation Modes and Functions 66 General Information 1 ...

Page 6: ...24 36 Four way cassette Cooling Only Ceiling floor Cooling Only 1 2 Outdoor Units Universal Outdoor unit Model Compressor type Compressor Brand Matched indoor units IOS629C2V01 Rotary DC Inverter GMCC ICS0629C21 IOS736C2V01 Rotary DC Inverter MITSUBISHI ICS0736C21 IUS0736C21 2 General Information ...

Page 7: ...External Appearance 2 External Appearance 2 1 Indoor Units Four way Cassette Ceiling Floor 2 2 Outdoor Units Single fan outdoor unit General Information 3 ...

Page 8: ...elligent refrigerant adjustment technology Throttle part is made up of capillary and electronic expansion valve EXV The outdoor unit can output the most accurate capacity in any condition 3 5 Working in cooling mode under 15 Outdoor unit built in with low ambient kit it can control the outdoor unit s fan and cooling can be performed throughout the year for computer rooms banquet halls etc Wide ope...

Page 9: ...Part 2 Indoor Units Four way Cassette Type 6 Ceiling Floor Type 20 5 ...

Page 10: ...ns 11 3 Service Space 12 4 Wiring Diagrams 13 5 Capacity Tables 14 6 Air Velocity and Temperature Distributions Reference Data 15 7 Electric Characteristics 16 8 Sound Levels 16 9 Accessories 17 10 The Specification of Power 18 11 Field Wiring 19 6 Indoor Units ...

Page 11: ...ume guarantees the excellent capacity 4 The adoption of the most advanced 3 Dimensional Screw fan Reduces the air resistance passing through Smoothes the air flow Makes air speed distribution to the heat exchange uniform 5 Fresh air makes life healthier and more comfortable 6 Drainage pump can take up the condenser water to750mm 7 Ultra thin machine body to easy installation and maintenance 18K 24...

Page 12: ... effect 10 More strengthening rib design around the panel preventing the distortion for the panel 11 New outlet frame design to make the phenomena of coagulation great improvement prevent the condensing water from damaging the air guide strip 12 Adding rib on the panel of fan outlet which can avoid the air outlet direct flow to people 13 4 speeds available optional super high fan speed design suit...

Page 13: ......

Page 14: ...d drop height is higher Max pipe length up to 50m refer to and Max drop height up to 30m refer to 17 Optimal design smaller Control Box Space saving and convenient for wiring Using fire resistance galvanized steel for E box material Metal box make the control part more stable and prevent damaging 18 New Panel for optional 360 degree air outlet 10 Four way Cassette Type ...

Page 15: ...Dimensions 2 Dimensions Unit mm MODEL A B C H ICS0629C21 230 Ф15 9 Ф9 52 260 ICS0736C21 300 Ф15 9 Ф9 52 330 Four way Cassette Type 11 ...

Page 16: ...Service Space 3 Service Space 1000mm 1000mm 1000mm 1000mm 12 Four way Cassette Type ...

Page 17: ...Wiring Diagrams 4 Wiring Diagrams ICS0629C21 ICS0736C21 Four way Cassette Type 13 ...

Page 18: ...8 03 7 74 7 59 7 01 SC 6 83 6 73 6 68 6 52 Input 2 38 2 49 2 66 2 76 ICS0736C21 Cooling Outdoor conditions DB Indoor Conditions kW 21ºC 28ºC 35ºC 43ºC 21 15ºC DB WB TC 11 33 10 78 10 23 9 79 SC 8 38 8 30 8 18 8 22 Input 3 42 3 71 3 88 4 00 24 17ºC DB WB TC 11 66 11 11 10 56 9 90 SC 8 75 8 67 8 55 8 32 Input 3 63 3 88 4 04 4 25 27 19ºC DB WB TC 11 88 11 33 11 00 10 23 SC 8 79 8 72 8 58 8 39 Input 3...

Page 19: ...Air Velocity and Temperature Distributions Reference Data 6 Air Velocity and Temperature Distributions Reference Data Airflow velocity Temperature Four way Cassette Type 15 ...

Page 20: ...or Unit Power Supply Hz Voltage Min Max MFA ICS0629C21 60 220 230 198 242 10 ICS0736C21 60 220 230 198 242 10 Note MFA Max Fuse Amps A 8 Sound Levels 1 4m Microphone Model Noise level dB A H M L ICS0629C21 42 40 5 39 ICS0736C21 44 42 5 41 16 Four way Cassette Type ...

Page 21: ... some models 1 Drain joint on some models 1 Seal ring Remote controller Its Frame Remote controller Its Frame 1 Remote controller holder 1 Mounting screw ST2 9 10 C H 2 Remote controller manual 1 Alkaline dry batteries AM4 2 Others Owner s manual 1 Installation manual 1 Installation accessory The product you have might not be provided the following accessories Expansible hook 4 Installation hook 4...

Page 22: ...Hz POWER WIRING mm2 3 1 0 3 1 0 CIRCUIT BREAKER FUSE A 15 10 15 10 OUTDOOR UNIT POWER Phase 1 phase 1 phase Frequency and Voltage 220 230V 60H 220 230V 60H POWER WIRING mm2 3X2 5 3X4 0 CIRCUIT BREAKER FUSE A 30 20 4030 Indoor Outdoor Connecting Wiring Weak Electric Signal mm2 3 0 5 3 0 5 Indoor Outdoor Connecting Wiring Strong Electric Signal mm2 18 Four way Cassette Type ...

Page 23: ...Field Wiring 11 Field Wiring ICS0629C21 ICS0736C21 Four way Cassette Type 19 ...

Page 24: ... 22 3 Service Space 23 4 Wiring Diagrams 24 5 Capacity Tables 25 6 Air Velocity and Temperature Distributions Reference Data 26 7 Electric Characteristics 28 8 Sound Levels 28 9 Accessories 29 10 The Specification of Power 30 11 Field Wiring 31 20 Ceiling Floor Type ...

Page 25: ...g vertical horizontal and wide angle air flow Air flow directional control minimizes the air resistance and produces wilder air flow to vertical direction The range of horizontal air discharge is widened which secures wider air flow distribution to provide more comfortable air circulation no matter where the unit is set up 1 4 Three level fan speed more humanism design meets different air supply r...

Page 26: ...Dimensions 2 Dimensions a Wall mounting installation b Ceiling installation Capacity Btu h A B C D E F G IUS0736C21 1280 660 203 795 506 1195 200 22 Ceiling Floor Type ...

Page 27: ...Service Space 3 Service Space Ceiling Floor Type 23 ...

Page 28: ...Wiring Diagrams 4 Wiring Diagrams IUS0736C21 24 Ceiling Floor Type ...

Page 29: ... 81 7 85 Input 3 44 3 73 3 89 4 02 24 17ºC DB WB TC 11 13 10 61 10 08 9 45 SC 8 35 8 27 8 16 7 94 Input 3 64 3 89 4 06 4 26 27 19ºC DB WB TC 11 34 10 82 10 50 9 77 SC 8 39 8 33 8 19 8 01 Input 3 73 3 93 4 14 4 35 32 23ºC DB WB TC 11 55 11 13 10 92 10 08 SC 9 82 9 68 9 61 9 37 Input 3 89 4 06 4 35 4 51 Notes TC Total capacity kW SC Sensible heat capacity kW Input Input power kW Ceiling Floor Type 2...

Page 30: ...c expansion valve Oil separator Compressor Low pressure switch Oil return Capillary High pressure switch Low pressure liquid accumulator Evaporator Capillary Outdoor unit Indoor unit 4 way valve Condenser T5 Discharge temp sensor Filter Filter Condenser temp sensor T3 T4 Ambient temp sensor Filter Filter T2 Evaporator temp sensor Room temp sensor T1 26 Ceiling Floor Type ...

Page 31: ...Air Velocity and Temperature Distributions Reference Data Discharge angle 60 FLOOR Airflow velocity Temperature Ceiling Floor Type 27 ...

Page 32: ... Indoor Unit Power Supply Hz Voltage Min Max MFA IUS0736C21 60 220 230 198 242 10 Note MFA Max Fuse Amps A 8 Sound Levels Microphone 1m 1m Air outlet side 1 5m 1m Microphone Ceiling Floor Model Noise level dB A H M L IUS0736C21 45 43 40 28 Ceiling Floor Type ...

Page 33: ... 1 Hook 2 2 Hanging arm 2 Remote controller Its holder 3 Remote controller 1 4 Remote controller holder 1 5 Mounting screw ST2 9 10 C H 2 6 Alkaline dry batteries AM4 2 Others 7 Owner s manual 1 8 Installation manual 1 9 Remote controller manual 1 Ceiling Floor Type 29 ...

Page 34: ...220 230V 60Hz POWER WIRING mm2 3 1 0 CIRCUIT BREAKER FUSE A 15 10 OUTDOOR UNIT POWER Phase 1 phase Frequency and Voltage 220 230V 60H POWER WIRING mm2 3X4 0 CIRCUIT BREAKER FUSE A 4030 Indoor Outdoor Connecting Wiring Weak Electric Signal mm2 3 0 5 Indoor Outdoor Connecting Wiring Strong Electric Signal mm2 30 Ceiling Floor Type ...

Page 35: ...Field Wiring 11 Field Wiring IUS0736C21 Ceiling Floor Type 31 ...

Page 36: ...Outdoor Unit Part 3 Outdoor Units 1 Dimensions 33 2 Service Space 34 3 Piping Diagrams 35 4 Wiring Diagrams 36 5 Electric Characteristics 38 6 Operation Limits 39 7 Sound Levels 40 32 Outdoor Unit ...

Page 37: ...Dimensions 1 Dimensions Unit mm MODEL A B C D E F H IOS629C2V01 845 560 335 360 312 320 700 IOS736C2V01 990 624 366 396 340 345 965 Outdoor Units 33 ...

Page 38: ...Dimensions Service Space More than 60cm More than 30cm More than 60cm More than 200cm Air inlet Air inlet More than 30cm Air outlet Wall or obstacle Maintain channel 34 Outdoor Unit ...

Page 39: ...Y TUBE T2 Evaporator temp sensor middle Note IOS629C2V01 are no EXV IOS736C2V01 INDOOR OUTDOOR LIQUID SIDE GAS SIDE HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR T2B Evaporator temp sensor outlet T1 Room temp sensor T3 Condenser temp sensor T5 Discharge temp sensor T4 Ambient temp sensor Electronic expansion valve CAPILIARY TUBE Oil return Capillary Oil separator High pressure switch...

Page 40: ...Wiring Diagrams 3 Wiring Diagrams IOS629C2V01 36 Outdoor Unit ...

Page 41: ...Wiring Diagrams IOS736C2V01 Outdoor Units 37 ...

Page 42: ...iring Diagrams Electric Characteristics Model Outdoor Unit Power Supply Hz Voltage Min Max MFA IOS629C2V01 60 220 230 198 242 20 IOS736C2V01 60 220 230 198 242 30 Note MFA Max Fuse Amps A 38 Outdoor Unit ...

Page 43: ...ns certain safety protection features may come into operation and cause the unit to operate abnormally 2 The room relative humidity should be less than 80 If the air conditioner operates beyond this figure the surface of the air conditioner may attract condensation Please set the vertical air flow louver to its maximum angle vertically to the floor and set HIGH fan mode 3 The optimum performance w...

Page 44: ...Sound Levels 5 Sound Levels H 1 0m Outdoor Unit Microphone Note H 0 5 height of outdoor unit Model Noise level dB A IOS629C2V01 57 IOS736C2V01 55 40 Outdoor Unit ...

Page 45: ...tion 44 4 Outdoor unit installation Side Discharge Unit 51 5 Refrigerant pipe installation 53 6 Drainage pipe installation 55 7 Vacuum Drying and Leakage Checking 59 8 Additional refrigerant charge 60 9 Engineering of insulation 61 10 Engineering of electrical wiring 62 11 Test operation 63 Outdoor Units 41 ...

Page 46: ...on and electric safety checking Test operation Refrigerant pipe installation and insulation Drainage pipe installation and insulation Indoor unit installation location selection Outdoor unit installation location selection Indoor unit installation Outdoor unit installation Refrigerant pipe installation and insulation Drainage pipe installation and insulation 42 Installation ...

Page 47: ...ll easily support the outdoor unit s weight Locate the outdoor unit as close to indoor unit as possible The piping length and height drop can not exceed the allowable value The place where the noise vibration and outlet air do not disturb the neighbors There is enough room for installation and maintenance The air outlet and the air inlet are not impeded and not face the strong wind It is easy to i...

Page 48: ...installation 3 1 1 Service space for indoor unit Model A H Remark 24 230 260 R410A Cooling 36 300 330 R410A Cooling 3 1 2 Bolt pitch 3 1 3 Install the pendant bolt Select the position of installation hooks according to the hook holes positions showed in upper picture 44 Installation ...

Page 49: ... installation hooks evenly to ensure the balance of the body Use a leveling instrument to make sure the levelness of the main body is within 1 Adjust the position to ensure the gaps between the body and the four sides of ceiling are even The body s lower part should sink into the ceiling for 10 12 mm In general L is half of the screw length of the installation hook Locate the air conditioner firml...

Page 50: ...Indoor unit installation 3 1 5 Install the panel Remove the grille Remove the 4 corner covers Hang the panel to the hooks on the mainbody 46 Installation ...

Page 51: ...ng to avoid condensate water Hang the air in grill to the panel then connect the lead terminator of the swing motor and that of the control box with corresponding terminators on the body respectively Install the 4 corner covers back Note The panel shall be installed after the wiring connected Installation 47 ...

Page 52: ...eiling floor indoor unit installation 3 2 1 Service space for indoor unit 3 2 2 Bolt pitch Ceiling installation Capacity Btu h D F G IUS0736C21 795 1195 200 Floor standing installation 3 2 3 Install the pendant bolt 48 Installation ...

Page 53: ...oks fittings Floor standing installation Fix the hook with tapping screw onto the wall Refer to picture below 3 2 4 Install the main body Ceiling installation The only installation method for the unit with drain pump Remove the side board and the grille Locate the hanging arm on the hanging screw bolt Prepare the mounting bolts on the unit Hang the unit on the hanging arm by sliding backward Secur...

Page 54: ...Indoor unit installation Floor standing installation Hang the indoor unit on the hook The bottom of body can touch with floor or suspended but the body must install vertically 50 Installation ...

Page 55: ...all the Unit Since the gravity center of the unit is not at its physical center so please be careful when lifting it with a sling Never hold the inlet of the outdoor unit to prevent it from deforming Do not touch the fan with hands or other objects Do not lean it more than 45 and do not lay it sidelong Make concrete foundation according to the specifications of the outdoor units Installation 51 ...

Page 56: ...Outdoor unit installation Side Discharge Unit Fasten the feet of this unit with bolts firmly to prevent it from collapsing in case of earthquake or strong wind 52 Installation ...

Page 57: ...on flat and smooth 9 0 Lean Crude Burr o 5 2 5 Insulate the copper pipe Before test operation the joint parts should not be heat insulated 5 2 6 Flare the pipe Insert a flare nut into the pipe before flaring the pipe According to the following table to flare the pipe Pipe diameter Flare dimension A mm Flare shape Min Max 3 8 9 52 12 0 12 4 R0 4 0 8 A 45 ã 90 4 5 8 15 9 18 6 19 1 After flared the p...

Page 58: ...rs should not be exceed 1 5m 5 2 13 Connect the pipe to indoor unit and outdoor unit by using two spanners Be sure to use two spanners and proper torque to fasten the nut too large torque will damage the bellmouthing and too small torque may cause leakage Refer the following table for different pipe connection Pipe Diameter Torque Sketch map kgf cm N cm 3 8 9 52 333 407 3270 3990 5 8 15 9 630 770 ...

Page 59: ...ater flowrate is decided by the capacity of indoor unit Relationship between water flowrate and capacity of indoor unit Capacity x1000Btu Water flowrate l h 24 6 36 8 According to the above table to calculate the total water flowrate for the confluence pipe selection For horizontal drainage pipe The following table is for reference PVC pipe Reference value of inner diameter of pipe mm Allowable ma...

Page 60: ...bag 6 2 5 The horizontal pipe layout should avoid converse flow or bad flow Drainage pipe Water flow Drainage pipe Drainage pipe Drain tee Drain tee Water flow Water flow Water flow Water flow Water flow Water flow Water flow Water flow Drain tee Branch pipe Water flow Water flow Keep a certain degree Branch pipe Gas Gas Main pipe Main pipe The correct installation will not cause converse water fl...

Page 61: ...lowing picture for installation reference Flexible pipe 300mm Hanger A A Length of horizontal pipe 150mm B Lift height the pump head of water pump Down incline pipe B 6 2 8 Blowhole setting For the concentrated drainage pipe system there should design a blowhole at the highest point of main pipe to ensure the condensate water discharge smoothly The air outlet shall face down to prevent dirt enteri...

Page 62: ...et In light of the length of drainage pipe water shall be discharged about 1 minute delayed 2 3 Stop the operation of air conditioner power off the power supply and put the cover of water test hole back to the original place a After stopped the air conditioner 3 minutes check whether there is anything abnormal If drainage pipes have not been distributed properly over back flow water shall cause th...

Page 63: ...urs of drying check whether there is leakage source 4 Leakage test After the vacuum degree reaches 755mmHg stop vacuum drying and keep the pressure for 1 hour If the indicator of vacuum gauge does not go up it is qualified If going up it indicates that there is moisture or leak source 7 3 2 Special vacuum drying The special vacuum drying method shall be adopted when 1 Finding moisture during flush...

Page 64: ...Refrigerant may only be charged after performed the vacuum drying process Always use gloves and glasses to protect your hands and eyes during the charge work Use electronic scale or fluid infusion apparatus to weight refrigerant to be recharged Be sure to avoid extra refrigerant charged it may cause liquid hammer of the compressor or protections Use supplementing flexible pipe to connect refrigera...

Page 65: ...ce the layer of insulation should be thicker accordingly 9 1 4 Installation highlights of insulation construction Gas pipe and liquid pipe shall be insulated separately if the gas pipe and liquid pipe were insulated together it will decrease the performance of air conditioner Liquid pipe Insulation meterial Gas pipe The insulation material at the joint pipe shall be 5 10cm longer than the gap of t...

Page 66: ...ruction should be finished by qualified electrician Air conditioning equipment should be grounded according to the local electrical regulations Current leakage protection switch should be installed Do not connect the power wire to the terminal of signal wire When power wire is parallel with signal wire put wires to their own wire tube and remain at least 300mm gap According to table in indoor part...

Page 67: ...de and liquid side stop values are both opened The air conditioner is pre heated by turning on the power 11 3 Test operation Set the air conditioner under the mode of COOLING by remote controller and check the following points Indoor unit Whether the switch on the remote controller works well Whether the buttons on the remote controller works well Whether the air flow louver moves normally Whether...

Page 68: ...Electrical Control System Part 5 Electrical Control System 1 Electrical Control Function 65 2 Troubleshooting 71 3 Controller 91 64 Electrical Control System ...

Page 69: ...ture protection of compressor top The unit will stop working when the compressor top temp protector cut off and will restart after the compressor top temp protector restart 1 2 3 Temperature protection of compressor discharge When the compressor discharge temp is getting higher the running frequency will be limited as below rules If 102 T5 115 decrease the frequency to the lower level every 2 minu...

Page 70: ...igh Low 2 0 Medium 3 0 Ts 24 1 3 2 Cooling Mode 1 3 2 1 Outdoor PMW open angle control The unit is working in cooling mode with the EXV open 300P for 3 minutes then adjusting PMW open angle according to the temperature of compressor discharge every 2 minutes 1 3 2 2 Outdoor fan running rules 27 High Low 25 20 15 low temperature cooling Outdoor fan in low temperature cooling mode acts as follow 38 ...

Page 71: ...f When T3 52 the compressor will restart 1 3 3 Auto mode This mode can be chosen with remote controller and the setting temperature can be changed between 17 30 In auto mode the machine will choose cooling heating or fan only mode according to ΔT ΔT T1 Ts ΔT T1 Ts Running mode ΔT 2 Cooling ΔT 2 Fan only Indoor fan will run at auto fan of the relevant mode The louver operates same as in relevant mo...

Page 72: ... rising and indoor fan is fixed at low speed Anti cold wind function has the priority 1 3 7 3 Operation time in sleep mode is 7 hours After 7 hours the AC quits this mode but doesn t turns off 1 3 7 4 Timer setting is available 1 3 8 Auto Restart function The indoor unit is equipped with auto restart function which is carried out through an auto restart module In case of a sudden power failure the...

Page 73: ...sor discharge temp Tp The display value is between 13 120 degree If the temp is lower than 13 degree the digital display tube will show 13 If the temp is higher than 99 degree the digital display tube will show single digit and tens digit For example the digital display tube show 0 5 it means the compressor discharge temp is 105 degree the digital display tube show 1 6 it means the compressor disc...

Page 74: ...unit number The indoor unit can communicate with outdoor unit well 19 Condenser pipe temp of 1 indoor unit If the temp is lower than 0 degree the digital display tube will show 0 If the temp is higher than 70 degree the digital display tube will show 70 If the capacity demand is 0 the digital display tube will show 0 If the indoor unit is not connected the digital display tube will show 20 Condens...

Page 75: ...Troubleshooting 2 Troubleshooting 2 1 Display board 2 1 1 Icon explanation on indoor display board Big cassette 2 1 2 Icon explanation on indoor display board Ceiling floor Electrical Control System 71 ...

Page 76: ... Open or short circuit of T1 temperature sensor X X X E2 3 Open or short circuit of T2 temperature sensor X X X E3 4 Open or short circuit of T2B temperature sensor X X X E4 5 Water level alarm malfunction X X X EE 6 EEPROM malfunction X X X E7 7 Outdoor unit malfunction X X X Ed X off flash at 5Hz flash at 0 5Hz Note Digital display is only available for 4 way cassette 72 Electrical Control Syste...

Page 77: ...en or short circuit of outdoor temperature sensor E5 Voltage protection of compressor P0 Top temperature protection of compressor P1 High pressure protection Only for 36K 52K P2 Low pressure protection Only for 36K 52K P3 Current protection of compressor P4 Discharge temperature protection of compressor P5 High temperature protection of condenser P6 IPM module protection P7 High temperature protec...

Page 78: ...normal Is it normal Yes 2 4 1 2 Outdoor unit malfunction Whether the outdoor main board has error displayed Whether the outdoor main board has error displayed Power off then restart the unit 2 minutes later If the outdoor main board displays error code several minutes later Power off then restart the unit 2 minutes later If the outdoor main board displays error code several minutes later No Yes Re...

Page 79: ...s Replace the indoor main PCB Replace the indoor main PCB Power off then restart the unit 2 minutes later Is it still displaying the error code Power off then restart the unit 2 minutes later Is it still displaying the error code Yes 2 4 2 For the outdoor unit 2 4 2 1 E0 malfunction Outdoor EEPROM malfunction Outdoor EEPROM malfunction E0 display E0 display Yes Replace the outdoor main PCB Replace...

Page 80: ... distinguished Replace indoor main PCB is the error distinguished Yes Replace the outdoor Main PCB Replace the outdoor Main PCB No Check whether there s any interference Such as too many lamps power transformers Or the signal wire is too long Check whether there s any interference Such as too many lamps power transformers Or the signal wire is too long Check whether the signal wire is shield cable...

Page 81: ... between the IPM board and the main board is it connected good Reconnect and retry Is error still display Replace IPM board and then check whether the system can run normally Replace the electric control box No No No No Yes Trouble is solved No Yes Replace outdoor main board and then check whether the system can run normally No Yes Yes E3 display Electrical Control System 77 ...

Page 82: ...f Check whether the wiring of the outdoor ambient temperature sensor T4 is broken off Check whether the resistance of outdoor ambient temperature sensor T4 is wrong refer to the Appendix 1 Check whether the resistance of outdoor ambient temperature sensor T4 is wrong refer to the Appendix 1 Yes Connect the wiring well Connect the wiring well Yes Judge 3 Compressor discharge temp sensor T5 is malfu...

Page 83: ...ge rectifier is normal Measure whether input voltage of bridge rectifier is normal Yes No No Measure whether the voltage between P and N is normal refer to the Appendix 3 Measure whether the voltage between P and N is normal refer to the Appendix 3 Replace the bridge rectifier Replace the bridge rectifier No Check whether bridge rectifier is normal Check whether bridge rectifier is normal Check th...

Page 84: ...heck the refrigerant volume charge Recharge the correct refrigerant volume Recharge the correct refrigerant volume Refrigerant system is blocked such as capillary or welded point of pipes Refrigerant system is blocked such as capillary or welded point of pipes Yes Check wiring connection of the overload protector Check wiring connection of the overload protector Correct the connection Correct the ...

Page 85: ... is higher than 50 No Stop the unit Stop the unit Yes Check if the outdoor unit ventilation is good Check if the outdoor unit ventilation is good Yes Make the outdoor unit ventilate well Make the outdoor unit ventilate well Check whether the heat exchanger is dirty Check whether the heat exchanger is dirty No Clean the heat exchanger Clean the heat exchanger Yes Check whether the refrigerant syste...

Page 86: ...tor No Whether the low pressure protector is broken Whether the low pressure protector is broken Check whether the outdoor ambient temperature is too low Check whether the outdoor ambient temperature is too low No Stop the unit Stop the unit Yes Open fully valve core of high pressure valve Open fully valve core of high pressure valve No Check whether valve core of high pressure valve is opened Che...

Page 87: ... Measure whether the voltage between P and N is normal refer to the Appendix 3 Replace the bridge rectifier Replace the bridge rectifier No Check whether bridge rectifier is normal Check whether bridge rectifier is normal Check the wiring of reactor or inductance Check the wiring of reactor or inductance Reconnect the wiring Reconnect the wiring No Check whether reactor or inductance is normal Che...

Page 88: ...mpressor discharge temp sensor and PCB according to wiring diagrams Measure the resistance value of compressor discharge temp sensor If the value is not normal is normal refer to the Appendix 2 Measure the resistance value of compressor discharge temp sensor If the value is not normal is normal refer to the Appendix 2 No Yes Yes No Correct the wiring connection Correct the wiring connection Stop l...

Page 89: ...on is good Check if the outdoor unit ventilation is good Yes Make the outdoor unit ventilate well Make the outdoor unit ventilate well Check whether the heat exchanger is dirty Check whether the heat exchanger is dirty No Clean the heat exchanger Clean the heat exchanger Yes Check whether the refrigerant system is ok Check whether the refrigerant system is ok Replace outdoor main board Replace out...

Page 90: ...rectifier Replace the bridge rectifier No Check whether bridge rectifier is normal Check whether bridge rectifier is normal Check the wiring of reactor or inductance Check the wiring of reactor or inductance Reconnect the wiring Reconnect the wiring No Check whether reactor or inductance is normal Check whether reactor or inductance is normal Yes Replace reactor or inductance Replace reactor or in...

Page 91: ... to the Appendix 1 Replace the temperature sensor Replace the temperature sensor No Yes Yes Stop the unit Stop the unit Yes Check whether the air outlet is blocked Check whether the air outlet is blocked Check whether the heat exchanger and filter are dirty Check whether the heat exchanger and filter are dirty Check whether the indoor fan is running normal Check whether the indoor fan is running n...

Page 92: ...5878 37 5 87359 77 1 29078 117 0 38991 2 39 8239 38 5 62961 78 1 25423 118 0 37956 1 37 1988 39 5 39689 79 1 21330 119 0 36954 0 35 2024 40 5 17519 80 1 17393 120 0 35982 1 33 3269 41 4 96392 81 1 13604 121 0 35042 2 31 5635 42 4 76253 82 1 09958 122 0 3413 3 29 9058 43 4 57050 83 1 06448 123 0 33246 4 28 3459 44 4 38736 84 1 03069 124 0 32390 5 26 8778 45 4 21263 85 0 99815 125 0 31559 6 25 4954 ...

Page 93: ... 115 2 422 4 222 8 36 34 32 76 7 82 116 2 357 3 211 4 37 32 94 77 7 566 117 2 294 2 200 7 38 31 62 78 7 321 118 2 233 1 190 5 39 30 36 79 7 086 119 2 174 0 180 9 40 29 15 80 6 859 120 2 117 1 171 9 41 28 81 6 641 121 2 061 2 163 3 42 26 9 82 6 43 122 2 007 3 155 2 43 25 86 83 6 228 123 1 955 4 147 6 44 24 85 84 6 033 124 1 905 5 140 4 45 23 89 85 5 844 125 1 856 6 133 5 46 22 89 86 5 663 126 1 808...

Page 94: ...N 208 240V 1 phase 3 phase 380 420V 3 phase In standby around 310VDC around 530VDC In operation With passive PFC module With partial active PFC module With fully active PFC module 200VDC 310VDC 370VDC 450VDC 90 Electrical Control System ...

Page 95: ...1 1RG51Q1 BGE General Function for wireless remote controller Model RG51Q1 BGE Rated voltage 3 0V 2pieces of LR03 7 batteries Min voltage for sending signal of CPU 2 4V Effective receiving distance 8m 11m Operation condition 5 60 Electrical Control System 91 ...

Page 96: ...eed will be selected in following sequence once pressing this button AUTO LOW MED HIGH 9 TIME ON For time ON setting Once pressing this button the time will increase by 0 5 hour When the set time exceeds 10 hours pressing the button will increase the time by 1 hour Adjusting the figure to 0 00 will cancel time ON setting 10 ECO Activate or turn off economic operation mode It is suggested to turn o...

Page 97: ...es et 13 1 Adjust Decrease the set temp Keeping pressing will decrease the temp with 1 per 0 5s 2 Adjust Increase the set temp Keeping pressing will increase the temp with 1 per 0 5s 3 MODE Once pressing running mode will be selected in the following sequence AUTO COOL DRY HEAT FAN NOTE No heating mode for cool only type unit 4 VERT SWING Used to stop or start horizontal louver movement The louver...

Page 98: ...unning under Energy saving mode it would be cancelled if press MODE FAN SPEED or ON OFF button 11 TIME OFF For time OFF setting Once pressing this button the time will increase by 0 5 hour When the set time exceeds 10 hours pressing the button will increase the time by 1 hour Adjust the figure to 0 00 will cancel time ON setting 12 LOCK inner located Push this button to lock in all the current set...

Page 99: ... angle of the louver The swing angle of the louver is 6o for each press When the louver swing at a certain angle which would affect the cooling and heating effect of the air conditioner it would automatically change the swing direction No symbol will appear in the display area when press this button Not applicable to units without this function 7 LED Press this button to clear the digit display in...

Page 100: ...pt that of the LOCK Use the LOCK mode when you want to prevent settings from being changed accidentally Press the LOCK button again to cancel the LOCK function A lock symbol will appear on the remote controller display when the lock function is activated 14 TURBO Push this button to activate cancel the Turbo function which enables the unit to reach the preset temperature in the shortest time On co...

Page 101: ...instruction If timer on or timer off has been set it cancel this setting then send instruction to stop the machine 8 Adjust button Set indoor temperature up If press and hold on it will increase at 1degree per 0 5 second 9 Adjust button Set indoor temperature down if press and hold on it will decrease at 1degree per 0 5 Second 10 Swing button First press start swing function second press stop swin...

Page 102: ... and other buttons is unable press again the icon disappears 7 Temperature display zone Generally it displays setting temperature it can be adjusted by press temperature button and But in fan mode no display here Remark The wired controller will reset to factory setting with auto mode auto fan and 24 setting temperature when the air conditioner restarts after power failure And this may cause incon...

Page 103: ... switch board easily for maintenance The connecting wire should be a little longer as to take away the controller easily for maintenance The specifications designs and information in this book are subject to change without notice for product improvement Electrical Control System 99 ...

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