mundoclima MUCR-H6 Series Service Manual Download Page 120

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Troubleshooting

118

Electrical Control System

2.4 Solving steps for typical malfunction

2.4.1 For the indoor unit

2.4.1.1 Open or short circuit of temperature sensor

Check the connections

between temperature

sensor and PCB. Are the

connections good?

Check the connections

between temperature

sensor and PCB. Are the

connections good?

Correct the connections.

Yes

Replace the sensor.

Replace the indoor PCB

Measure the resistance value

of the sensor via Appendix 1

Measure the resistance value

of the sensor via Appendix 1

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?

Yes

Refer to corresponding

solving steps

Refer to corresponding

solving steps

Yes

Summary of Contents for MUCR-H6 Series

Page 1: ...lima com CL20230 to CL20258 English Thank you very muchfor purchasing our products Please read this manual carefully before installing and using the unit SUPER INVERTER H6 Service manual MUCSR H6 MUSTR H6 MUCR H6 ...

Page 2: ...Information 1 Part 2 Indoor Units 4 Part 3 Outdoor Units 60 Part 4 Installation 72 Part 5 Electrical Control System 103 The specifications designs and information in this book are subject to change without notice for product improvement ...

Page 3: ...General Information General Information 1 Part 1 General Information 1 Model Lists 2 2 External Appearance 3 2 1 Indoor Units 3 2 2 Outdoor Units 3 ...

Page 4: ... H6 MUCR 24 H6 MUCSR 24 H6 MUSTR 24 H6 Rotary GMCC MUCSR 24 H6 MUCR 24 H6 MUSTR 24 H6 MUCR 30 H6 MUCSR 30 H6 MUSTR 30 H6 Rotary GMCC MUCSR 30 H6 MUCR 30 H6 MUSTR 30 H6 MUCR 36 H6 MUCSR 36 H6 MUSTR 36 H6 Rotary GMCC MUCSR 36 H6 MUCR 36 H6 MUSTR 36 H6 MUCR 42 H6 MUCSR 42 H6 MUSTR 42 H6 Rotary GMCC MUCSR 42 H6 MUCR 42 H6 MUSTR 42 H6 MUCR 48 H6 MUCSR 48 H6 MUSTR 48 H6 Rotary GMCC MUCSR 48 H6 MUCSR 48 ...

Page 5: ...ance General Information 3 2 External Appearance 2 1 Indoor Units Super slim cassette Duct Ceiling Floor Compact Four way cassette 2 2 Outdoor Units Single fan outdoor unit 12 to 42k Double fan outdoor unit 48 to 60k ...

Page 6: ...Indoor Units 4 Indoor Units Part 2 Indoor Units Super Slim Cassette Type 24 to 60k 5 Duct Type 12 to 60k 20 Ceiling Floor Type 18 to 60k 36 Four way Cassette Type Compact 12 to 18k 51 ...

Page 7: ...CSR 24 30 36 42 48 H6 MUCSR 48 60 H6T 1 Features 6 2 Dimensions 9 3 Service Space 10 4 Wiring Diagrams 10 5 Air Velocity Distributions Reference Data 12 6 Electric Characteristics 15 7 Sound Levels 16 8 Accessories 17 9 The Specification of Power 18 10 Field Wiring 19 ...

Page 8: ...uality more healthy and comfortable Ventilation motor is optional to increase the effect of fresh air 1 3 Optional ionizer generator Ionizer generator is optional to get refreshing air to your room Ionizer can be switched on or off by remote controller When pressing the Clean Air button on the remote controller Ionizer will work and the indicator light on display board will shine I Io on ni iz ze ...

Page 9: ...erve external air duct more flexible for the air supply 1 5 Built in draining pump Due to the improvement of structure more convenient to repair or replace the draining pump Built in draining pump to make sure condensed water drain out reliably Draining Pump ...

Page 10: ...s for the connection of alarm lamp and long distance on off controller more human control 1 7 Twins Combination 24k 30k The units can be installed as Twin systems one outdoor unit can connect with two indoor units The indoor units can be combined in any of the different available ratings Alarm lamp Long distance on off controller ...

Page 11: ... 132 A A B A A B A A B A B Service hole for draining pump Fresh air intake 75 55 80 80 4 install hanger Gas side Liquid side E parts box 135 90 Panel Body 92 92 92 92 D D 92 92 D D D D 92 92 92 92 92 92 92 92 D D Unit mm Model A B C D MUCSR 24 H6 MUCSR 30 H6 MUCSR 36 H6 MUCSR 42 H6 160 95 245 60 MUCSR 48 H6 MUCSR 48 H6T MUCSR 60 H6T 160 95 287 60 ...

Page 12: ...A B D E F 0 15 32 47 0 8 4 1 2 3 5 6 7 C 9 A B D E F 0 8 4 1 2 3 5 6 7 C 9 A B D E F 0 8 4 1 2 3 5 6 7 C 9 A B D E F 16 31 48 63 According to the EEPROM setting CN13 DISPLAY BOARD TO WIRE CONTROLLER 10 T2 T1 CN6 4 MIDDLE PIPE TEMP ROOM TEMP BLACK WHITE CN10 CN10A M PUMP 2 INDOOR UNIT MAINBOARD CN40 TO WIRE CONTROLLER 4 CN23 ON OFF Remote Control CN33 ALARM Alarm Output CN15 M Inner Driver DC Motor...

Page 13: ...W5 ON STATE MODE MAIN NO SLAVE MAIN MAIN SLAVE SWITCH FOR AUTO RESTART SETTING SW3 ON STATE MODE REMEMBER NO_REMEMBER SWITCH FOR FAN MOTER CONTROL THEN NO POWER REQUEST SW2 ON STATE MODE FAN ON FAN OFF 8 A SWITCH FOR CCM UNIT ADDRESS RED Reactor 0 8 4 1 2 3 5 6 7 C 9 A B D E F 0 15 S2 S1 ADDRESS ON 1 2 ON 1 2 ON 1 2 ON 1 2 Factory Setting Factory Setting Factory Setting 32 47 0 8 4 1 2 3 5 6 7 C 9...

Page 14: ...Air Velocity Distributions Reference Data 12 Indoor Units 5 Air Velocity Distributions Reference Data 24K Cooling Heating ...

Page 15: ...Air Velocity Distributions Reference Data Indoor Units 13 30 42K Cooling Heating ...

Page 16: ...Air Velocity Distributions Reference Data 14 Indoor Units 48 60K Cooling Heating ...

Page 17: ... Unit Power Supply Hz Voltage Min Max MFA MUCSR 24 H6 50 220 240V 198V 254V MUCSR 30 H6 50 220 240 198 254 MUCSR 36 H6 50 220 240V 198V 254V MUCSR 42 H6 50 220 240V 198V 254V MUCSR 48 H6 MUCSR 48 H6T 50 220 240V 198V 254V MUCSR 60 H6T 50 220 240V 198V 254V Notes MFA Max Fuse Amps A ...

Page 18: ...Sound Levels 1 4m Microphone Model Noise Power dB A Noise level dB A H M L MUCSR 24 H6 62 46 42 39 MUCSR 30 H6 65 53 48 44 MUCSR 36 H6 65 56 52 48 MUCSR 42 H6 64 52 40 47 MUCSR 48 H6 MUCSR 48 H6T 65 55 51 48 MUCSR 60 H6T 69 52 49 46 ...

Page 19: ...eal ring 1 Remote controller Its Frame The product you have might not be provided the following accessories 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 ...

Page 20: ...40 30 40 30 30 20 Indoor Outdoor Connecting Wiring Weak Electric Signal mm 2 2 0 2 2 0 2 2 0 2 2 0 2 Indoor Outdoor Connecting Wiring Strong Electric Signal mm 2 3 1 0 3 1 0 3 1 0 3 1 0 Model Btu h 42000 48000 42000 60000 POWER Phase 1 phase 3 phase Frequency and Voltage 220 240V 50Hz 380 415V 50Hz Power Wiring mm 2 3 4 0 5 2 5 Circuit Breaker Fuse A 40 35 30 25 Indoor Outdoor Connecting Wiring We...

Page 21: ...Field Wiring Indoor Units 19 10 Field Wiring ...

Page 22: ...12 18 24 30 36 48 H6 MUCR 48 60 H6T 1 Features 21 2 Dimensions 24 3 Service Space 25 4 Wiring Diagrams 26 5 Static Pressure 28 6 Electric Characteristics 31 7 Sound Levels 32 8 Accessories 33 9 The Specification of Power 34 10 Field Wiring 35 ...

Page 23: ...f air inlet frame from rear and bottom is same it s very easy to move the cover from bottom to rear side or from rear to the bottom in order to matching the installation condition 1 3 Fresh air intake function Optional for 18 60k Install one duct from the reserved fresh air intake to outdoor Continually inhale the fresh air to improve the quality of the indoor air fulfills air quality more healthy...

Page 24: ...nel firstly Remove a half of blower housing and take out the motor with centrifugal fan Directly remove two bolts and then replace the motor or centrifugal fan easily 1 5 Reserved remote on off and central control ports Reserved remote on off ports and central control ports can connect the cable of an on off controller or a central controller to realize remote on off control function or group cont...

Page 25: ...in the E box Move out the display and fix it in other place even in the distance of 10m The unit will realized remoter control The wired controller and the display board can display the error code or production code when the chips detect some failure 1 8 Twins Combination The units can be installed as Twin systems one outdoor unit can connect with two indoor units The indoor units can be combined ...

Page 26: ...Unit mm Model Outline dimension mm Air outlet opening size Air return opening size Size of install hanger Size of refrigerant pipe A B C D E F G H I J K L M H1 H2 W1 W2 MUCR 12 H6 700 210 635 570 65 493 35 119 595 200 80 740 350 120 143 95 150 MUCR 18 H6 MUCR 24 H6 920 270 635 570 65 713 35 179 815 260 20 960 350 120 143 95 150 MUCR 30 H6 1140 270 775 710 65 933 35 179 1035 260 45 1240 500 120 143...

Page 27: ...Service Space Indoor Units 25 3 Service Space Ensure enough space required for installation and maintenance All the indoor units reserve the hole to joint the fresh air pipe The hole size as following ...

Page 28: ... 0 0 8 8 4 4 1 1 2 2 3 3 5 5 6 6 7 7 C C 9 9 A A B B D D E E F F 0 0 8 8 4 4 1 1 2 2 3 3 5 5 6 6 7 7 C C 9 9 A A B B D D E E F F 0 0 8 8 4 4 1 1 2 2 3 3 5 5 6 6 7 7 C C 9 9 A A B B D D E E F F 0 0 8 8 4 4 1 1 2 2 3 3 5 5 6 6 7 7 C C 9 9 A A B B D D E E F F 0 0 8 8 4 4 1 1 2 2 3 3 5 5 6 6 7 7 C C 9 9 A A B B D D E E F F ENC2 ENC2 0 0 1 1 2 2 3 3 MODEL K Btu h MODEL K Btu h 0 Pa 0 Pa 4 4 FACTORY SET...

Page 29: ...WHITE RED RED CN10 CN10A INDOOR UNIT MAINBOARD DC MOTOR DRIVER MODLE CN13 CN3 M Outer Driver DC Motor Y G 3 CN15 5 FAN1 CN26 Y G 5 S2 S1 CN13 M PUMP 2 CN3 Y G CN5 WATER LEVEL SWITCH CN2 CN1 BLACK Y G L L1 N L2 RED L L1 N L2 TO OUTDOOR UNIT L L1 N L2 FOR OUTDOOR POWER SUPPLY POWER WIRING DIAGRAM INDOOR UNIT CN40 CONVERT MODULE BOARD WIRE CONTROLLER CN2 CN8 HB HA ENC1 0 F NETADDRESS CODE 0 15 FACTOR...

Page 30: ...Static Pressure 28 Indoor Units 5 Static Pressure MUCR 12 H6 MUCR 18 H6 ...

Page 31: ...Static Pressure Indoor Units 29 MUCR 24 H6 MUCR 30 H6 ...

Page 32: ...Static Pressure 30 Indoor Units MUCR 36 H6 MUCR 42 H6 MUCR 48 H6 MUCR 48 H6T MUCR 60 H6T ...

Page 33: ...in Max MFA MUCR 12 H6 50 220 240V 198V 254V MUCR 18 H6 50 220 240V 198V 254V MUCR 24 H6 50 220 240V 198V 254V MUCR 30 H6 50 220 240V 198V 254V MUCR 36 H6 50 220 240V 198V 254V MUCR 42 H6 50 220 240V 198V 254V MUCR 48 H6 MUCR 48 H6T 50 220 240V 198V 254V MUCR 60 H6T 50 220 240V 198V 254V Note MFA Max Fuse Amps A ...

Page 34: ... 4m Concealed Duct Type Duct Duct Model Sound Power dB A Noise level dB A H M L MUCR 12 H6 59 42 38 35 MUCR 18 H6 57 44 40 37 MUCR 24 H6 60 44 42 38 MUCR 30 H6 65 53 48 44 MUCR 36 H6 64 46 43 40 MUCR 42 H6 68 49 47 44 MUCR 48 H6 MUCR 48 H6T 68 50 47 44 MUCR 60 H6T 69 50 47 45 ...

Page 35: ...ulation sheath 2 Binding tape 1 Seal sponge 1 Drainpipe Fittings for cooling heating Drain joint 1 Seal ring 1 Wired controller Its Frame Wired controller 1 Others Owner s manual 1 Installation manual 1 EMS It s fitting Magnetic ring twist the electric wires L and N around it to five circles 1 ...

Page 36: ...se A 20 16 30 20 40 30 40 30 30 20 Indoor Outdoor Connecting Wiring Weak Electric Signal mm 2 2 0 2 2 0 2 2 0 2 2 0 2 Indoor Outdoor Connecting Wiring Strong Electric Signal mm 2 4 1 0 3 1 0 3 1 0 3 1 0 3 1 0 Model Btu h 42000 48000 42000 60000 POWER Phase 1 phase 3 phase Frequency and Voltage 220 240V 50Hz 380 415V 50Hz Power Wiring mm 2 3 4 0 5 2 5 Circuit Breaker Fuse A 40 35 30 25 Indoor Outdo...

Page 37: ...Field Wiring Indoor Units 35 10 Field Wiring MUCR 12 H6 MUCR 18 H6 MUCR 24 H6 MTB 30HWDN1 QRD0 MUCR 36 H6 MUCR 42 H6 MUCR 48 H6 MUCR 48 H6T MUCR 60 H6T ...

Page 38: ...MUSTR 48 60 H6T 1 Features 37 2 Dimensions 38 3 Service Space 39 4 Wiring Diagrams 40 5 Electric Characteristics 42 6 Sound Levels 42 7 Air Velocity and Temperature Distributions Reference Data 43 8 Accessories 49 9 The Specification of Power 49 10 Field Wiring 50 ...

Page 39: ...1 3 Two direction auto swing 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 m...

Page 40: ...Wiring connection port 204 94 Fresh air intake Drain discharge port Refrigerant pipe hole Hanging arm D Capacity KBtu h A B C D MUSTR 18 H6 MUSTR 24 H6 1068 675 235 983 MUSTR 30 H6 1285 675 235 1200 MUSTR 36 H6 MUSTR 42 H6 MUSTR 48 H6 MUSTR 48 H6T MUSTR 60 H6T 1650 675 235 1565 ...

Page 41: ...Service Space Indoor Units 39 3 Service Space ...

Page 42: ...91 105 106 140 141 160 FACTORY SETTING ACCORDING TO RELATED MODEL FOR SETTING POWER 161 53 POWER CODE ENC1 1 ON 1 ON FACTORY SETTING FOR SETTING AUTO RESTART SW3 MODE ACTIVE INACTIVE 1 ON 1 ON FACTORY SETTING FOR SETTING MOTOR CONTROL WHEN NO POWER REQUEST SW2 MODE FAN OFF FAN ON CN19 CN16 BLUE BLACK YELLOW GRAY WHITE To CCM Comm Bus To outdoor Comm Bus S1 S2 X Y E Ferrite bead Y G Y G 3 Y G M Out...

Page 43: ...1 ON 1 ON FACTORY SETTING FOR SETTING AUTO RESTART SW3 MODE AUTO RESTART NOT AUTO RESTART FOR SETTING FAN MOTOR CONTROL WHEN THERE IS NO DEMAND 1 ON 1 ON SW2 FAN OFF FAN ON MODE FACTORY SETTING 1 2 ON 1 2 ON 1 2 ON 1 2 ON SW6 CODE 0 FOR TEMP COMPENSATION HEATING 2 4 FACTORY SETTING EEPROM default Y G Y G 1 ON 1 ON Mode Factory Setting SW4 For Setting Fan Quantity Single Fan Double Fan CN7 T2 T1 CN...

Page 44: ...254V MUSTR 42 H6 50 220 240V 198V 254V MUSTR 48 H6 MUSTR 48 H6T 50 220 240V 198V 254V MUSTR 60 H6T 50 220 240V 198V 254V Note MFA Max Fuse Amps A 6 Sound Levels Microphone 1m 1m Air outlet side 1 5 m 1m Microphone Ceiling Floor Model Sound Power dB A Noise level dB A H M L MUSTR 18 H6 56 44 39 34 MUSTR 24 H6 64 53 48 42 MUSTR 30 H6 65 54 49 44 MUSTR 36 H6 65 56 53 50 MUSTR 42 H6 68 56 48 41 MUSTR ...

Page 45: ...ty and Temperature Distributions Reference Data Indoor Units 43 7 Air Velocity and Temperature Distributions Reference Data Model MUSTR 18 H6 MUSTR 24 H6 Ceiling installation Discharge angle 17 Discharge angle 50 ...

Page 46: ...Air Velocity and Temperature Distributions Reference Data 44 Indoor Units Floor installation Discharge angle 17 Discharge angle 50 ...

Page 47: ...Air Velocity and Temperature Distributions Reference Data Indoor Units 45 Model MUSTR 30 H6 MUSTR 36 H6 Ceiling installation Discharge angle 17 Discharge angle 50 ...

Page 48: ...Air Velocity and Temperature Distributions Reference Data 46 Indoor Units Floor installation Discharge angle 17 Discharge angle 50 ...

Page 49: ...Air Velocity and Temperature Distributions Reference Data Indoor Units 47 Model MUSTR 42 H6 MUSTR 48 H6 MUSTR 48 H6T MUSTR 60 H6T Ceiling installation Discharge angle 17 Discharge angle 50 ...

Page 50: ...Air Velocity and Temperature Distributions Reference Data 48 Indoor Units Floor installation Discharge angle 17 Discharge angle 50 ...

Page 51: ...phase Frequency and Voltage 220 240V 50Hz 220 240V 50Hz 220 240V 50Hz 380 420V 50Hz POWER WIRING mm 2 3 2 5 3 2 5 3 4 0 5 2 5 CIRCUIT BREAKER Fuse A 30 20 40 30 40 30 30 20 Indoor Outdoor Connecting Wiring Weak Electric Signal mm 2 2 0 2 2 0 2 2 0 2 2 0 2 Indoor Outdoor Connecting Wiring Strong Electric Signal mm 2 3 1 0 3 1 0 3 1 0 3 1 0 Model Btu h 42000 48000 42000 60000 POWER Phase 1 phase 3 p...

Page 52: ...50 Indoor Units 10 Field Wiring ...

Page 53: ...Compact MUCSR 12 18 H6 1 Features 52 2 Dimensions 53 3 Service Space 53 4 Wiring Diagrams 54 5 Air Velocity and Temperature Distributions Reference Data 56 6 Electric Characteristics 57 7 Sound Levels 57 8 Accessories 58 9 The Specification of Power 58 10 Field Wiring 59 ...

Page 54: ...47 50 647mm The hooks are designed in the four corners of the body which can save installation space 1 3 Electric control box built in design The E box is simply and safely built inside the indoor unit It s convenient for installation and maintenance Can check the control part easily you only need to open the air return grille 1 4 Air passage function Reserves the space for air outlet from the sid...

Page 55: ...e Liquid side 4 install hanger Body Drain pipe 32 Fresh air intake 65 647 647 50 Drain hole for Service 545 570 260 68 42 157 126 44 Wiring connection port 75 150 Distribution duct 2 E parts box 4 Screw hole for install panel 523 570 Wiring connection port 170 2 3 Service Space ...

Page 56: ...B OUTER PIPE TEMP POWER P1 CN3 JR6 JR6 2 P4 Y G 4 CN110 YELLOW Y G TO OUTDOOR UNIT P5 MUCSR 18 H6 SWITCH ENC1 FOR POWER SWITCH FOR TEMP COMPENSATION SW6 E function SWITCH FOR MAIN SLAVE SETTING SW5 SWITCH FOR AUTO RESTART SETTING SW3 SWITCH FOR FAN MOTER CONTROL THEN NO POWER REQUEST SW2 A Reactor 0 8 4 1 2 3 5 6 7 C 9 A B D E F 0 15 32 47 0 8 4 1 2 3 5 6 7 C 9 A B D E F 0 8 4 1 2 3 5 6 7 C 9 A B ...

Page 57: ...9100W 10500W 4 0HP 7500W 9000W 3 2HP 5400W 7100W 2 5HP 4000W 5300W 2 0HP NUMBER SWITCH ENC1 FOR POWER POWER CN55 CN66 TO SWING BOARD XS2 XP2 TO GO UP AND DOWN BOARD XS2 XP2 SWITCH FOR TEMP COMPENSATION SW6 ON 6 STATE VALUE 4 2 E function SWITCH FOR MAIN SLAVE SETTING SW5 ON STATE MODE MAIN NO SLAVE MAIN MAIN SLAVE SWITCH FOR AUTO RESTART SETTING SW3 ON STATE MODE REMEMBER NO_REMEMBER SWITCH FOR FA...

Page 58: ...Air Velocity and Temperature Distributions Reference Data 56 Indoor Units 5 Air Velocity and Temperature Distributions Reference Data Airflow velocity Temperature ...

Page 59: ...odel Indoor Units Power Supply Hz Voltage Min Max MFA MUCSR 12 H6 50 220 240V 198V 254V MUCSR 18 H6 50 220 240V 198V 254V Note MFA Max Fuse Amps A 7 Sound Levels 1 4m Microphone Model Noise Power dB A Noise level dB A H M L MUCSR 12 H6 58 42 38 34 MUCSR 18 H6 59 46 42 38 ...

Page 60: ... 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 Orifice 1 9 The Specification of Power Model Btu h 12000 18000 POWER Phase 1 phase 1 phase Frequency and Voltage 220 240V 50Hz 220 240V 50Hz POWER...

Page 61: ...Field Wiring Indoor Units 59 10 Field Wiring MUCSR 12 H6 MUCSR 18 H6 ...

Page 62: ...Outdoor Units 60 Outdoor Units Part 3 Outdoor Units 1 Dimensions 61 2 Service Space 63 3 Wiring Diagrams 64 4 Piping Diagrams 68 5 Electric Characteristics 69 6 Operation Limits 70 7 Sound Levels 71 ...

Page 63: ...Dimensions Outdoor Units 61 1 Dimensions W H W1 A B D Model Unit mm W D H W1 A B 12 18 800 333 554 870 514 340 24 845 363 702 914 540 350 30 36 42 946 410 810 1030 673 403 ...

Page 64: ...Dimensions 62 Outdoor Units Model Unit mm W D H W1 A B 48 60 952 415 1333 1045 634 404 ...

Page 65: ...Service Space Outdoor Units 63 2 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 ...

Page 66: ...ANSION VALVE 5 6 CN 31 PAN HEATER CN 15 OPTIONAL CN 60 CRANKCASE HEATER CN 17 OPTIONAL BLUE BROWN YELLOW OR BLACK INDOOR UNIT S 2 N L N POWER SUPPLY RED BLUE OR BLACK Y G 1 L Y G AMBIENT TEMP SENSOR DISCHARGE TEMP SENSOR CN 21 CONDENSER TEMP SENSOR Y G CN 1A Y G Y G 16022000022493 COMPRESSOR Y G CN 50 3 U V W BLUE RED BLACK ...

Page 67: ...RESSOR CN1 U R V S W C BLUE BLACK U V W CN7 VALVE A MAIN BOARD CN17 T4 T3 P 1 RED DISCHARGE SENSOR CN18 COM 3 RY2 ON 4 CN29 CN21 CN14 LOW HIGH CN12 CompTop YELLOW RED LOW PRESSURE PROTECT HIGH PRESSURE PROTECT 4 CN4 CN5 IPM BOARD 5 RED BROWN BLUE L OUT Y G CN6 CN5 HEATER1 HEAT1 CN1 CN2 4 WAY 4 WAY HEATER2 OPTIONAL CN9 CN8 HEAT2 CN2 CN3 REACTOR BLUE BLUE OUTDOOR AMBIENT TEMPERATURE SENSOR CONDENSER...

Page 68: ...L PFC INDUCTOR Y G TP TH HEATSINK TEMPERATURE SENSOR TP EXHAUST TEMPERATURE SENSOR RED BLACK V U CN19 CN51 CN55 W EEV BLACK DRIVER BOARD RED 7 7 YELLOW BLUE P 1 Applicable to the units adopting DC motor only FM1 OUTDOOR DC FAN FAN MOTOR CAPACITOR CN53 CN20 CN34 CN3 CN4 CN10 CN40 CN22 CN44 CN8 CN9 CN7 CN2 CN1 CN5 CN54 CN52 3 CN33 ORANGE ORANGE M 5 CN6 SV 4 WAY1 BLUE BLUE ORANGE ORANGE CN12 CN11 3 3...

Page 69: ...XT1 TO INDOOR UNIT L1 Y G XT2 1 L2 2 OPTIONAL 1 L2 2 1 N 2 L N L P9 P7 P8 CN22 RED BLUE BLACK CN8 PAIQI ORANGE ORANGE RED BLACK COMP FM2 DC MOTOR DRIVER BOARD U V W CN4 CN3 L2 U V W Y G Y G D L CN7 SV FM1 L PRO T3 T4 CODE PART NAME COMPRESSOR D HEAT_Y HEAT_D CT1 AC CURRENT DETECTOR 4 WAY VALVE COMP CAP1 CAP2 EEV ELECTRIC EXPANSIVE VALVE OUTDOOR AC FAN FAN1 FAN2 H PRO L PRO LOW PRESSURE SWITCH HIGH...

Page 70: ...UCSR 24 H6 MUSTR 24 H6 there is no accumulator MUCR 30 36 42 48 H6 MUCSR 30 36 42 48 H6 MUSTR 30 36 42 48 H6 MUCR 48 60 H6T MUCSR 48 60 H6T MUSTR 48 60 H6T LIQUID SIDE GAS SIDE HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER Compressor 2 WAY VALVE 3 WAY VALVE 4 WAY VALVE COOLING HEATING T2B Evaporator temp sensor outlet T1 Room temp sensor T3 Condenser temp sensor Accumulator T5 Discharge temp se...

Page 71: ...6 MUCSR 24 H6 MUSTR 24 H6 50 220 240V 198V 254V 20 MUCR 30 H6 MUCSR 30 H6 MUSTR 30 H6 50 220 240V 198V 254V 30 MUCR 36 H6 MUCSR 36 H6 MUSTR 36 H6 50 220 240V 198V 254V 30 MUCR 42 H6 MUCSR 42 H6 MUSTR 42 H6 50 220 240V 198V 254V 35 MUCR 48 H6 MUCSR 48 H6 MUSTR 48 H6 50 220 240V 198V 254V 35 MUCR 48 H6T MUCSR 48 H6T MUSTR 48 H6T 50 380 415V 342V 440V 25 MUCR 60 H6T MUCSR 60 H6T MUSTR 60 H6T 50 380 4...

Page 72: ...itions 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 performan...

Page 73: ... MUCSR 12 H6 60 57 MUCR 18 H6 MUCSR 18 H6 MUSTR 18 H6 64 56 5 MUCR 24 H6 MUCSR 24 H6 MUSTR 24 H6 65 60 5 MUCR 30 H6 MUCSR 30 H6 MUSTR 30 H6 66 59 5 MUCR 36 H6 MUCSR 36 H6 MUSTR 36 H6 66 61 MUCR 42 H6 MUCSR 42 H6 MUSTR 42 H6 71 62 5 MUCR 48 H6 MUCSR 48 H6 MUSTR 48 H6 72 65 MUCR 48 H6T MUCSR 48 H6T MUSTR 48 H6T 72 65 MUCR 60 H6T MUCSR 60 H6T MUSTR 60 H6T 75 62 5 ...

Page 74: ...74 3 Indoor unit installation 75 4 Outdoor unit installation 89 5 Refrigerant pipe installation 90 6 Drainage pipe installation 94 7 Vacuum Drying and Leakage Checking 98 8 Additional refrigerant charge 99 9 Engineering of insulation 100 10 Engineering of electrical wiring 101 11 Test operation 102 ...

Page 75: ... Wiring connection 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 ...

Page 76: ...on The place shall 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...

Page 77: ...oor unit installation Installation 75 3 Indoor unit installation 3 1 Super slim cassette indoor unit installation 3 1 1 Service space for indoor unit Model A H 24 42 245 275 48 60 287 317 3 1 2 Bolt pitch ...

Page 78: ...h the 4 hanger of the main body to suspend it Adjust the hexangular nuts on the four 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 i...

Page 79: ...n 77 3 1 5 Install the panel Remove the grille Remove the 4 corner covers Hang the panel to the hooks on the mainbody If the panel is with auto lift grille please watch the ropes lifing the grille DO NOT make the ropes enwinded or blocked ...

Page 80: ...Indoor unit installation 78 Installation Tighten the screws under the panel hooks till the panel closely stick on the ceiling to avoid condensate water ...

Page 81: ...r 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 ...

Page 82: ...llation 80 Installation 3 2 Duct indoor unit installation 3 2 1 Service space for indoor unit 3 2 2 Bolt pitch Capacity KBtu Size of outline dimension mounted plug L M 12 740 350 18 24 960 350 30 1240 500 36 60 1240 500 ...

Page 83: ...e hooks fittings 3 2 4 Install the main body Make the 4 suspender through the 4 hanger of the main body to suspend it Adjust the hexangular nuts on the four 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 3 2 5 Install the air filter Insert the air filter through the filter slot and fix it with 2 screws 3...

Page 84: ...ched seal sponge as per the indicating place in the following fig and then change the mounting positions of air return panel and air return flange When install the filter mesh please plug it into flange inclined from air return opening and then push up The installation has finish upon filter mesh which fixing blocks have been insert to the flange positional holes ...

Page 85: ...ion Installation 83 3 3Ceiling floor indoor unit installation 3 3 1 Service space for indoor unit 3 3 2 Bolt pitch Ceiling installation Capacity KBtu h D E 18 24 983 220 30K 1200 220 36 60 1565 220 Wall mounted installation ...

Page 86: ...2mm 45 50mm deep at the selected positions on the ceiling Then embed the expansible hooks fittings Wall mounted installation Install the tapping screws onto the wall Refer to picture below 3 3 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 mounti...

Page 87: ... Put the side panels and grilles back Wall mounted installation Hang the indoor unit by insert the tapping screws into the hanging arms on the main unit The bottom of body can touch with floor or suspended but the body must install vertically ...

Page 88: ...n of installation hooks according to the hook holes positions showed in upper picture Drill four holes of Ø12mm 45 50mm deep at the selected positions on the ceiling Then embed the expansible hooks fittings Face the concave side of the installation hooks toward the expansible hooks Determine the length of the installation hooks from the height of ceiling then cut off the unnecessary part ...

Page 89: ...uts on the four 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 co...

Page 90: ... the screws under the panel hooks till the panel closely stick on the ceiling 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 Note The panel shall be installed after the wiring connected ...

Page 91: ... 403 410 48 60 634 404 415 4 3 Install 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 t...

Page 92: ...0Btu h 30m 20m 24 000Btu h 30 000Btu h 50m 25m 36 000Btu h 60 000Btu h 65m 30m 5 2 The procedure of connecting pipes 5 2 1 Choose the pipe size according to the specification table 5 2 2 Confirm the cross way of the pipes 5 2 3 Measure the necessary pipe length 5 2 4 Cut the selected pipe with pipe cutter Make the section flat and smooth 9 0 Lean Crude Burr o 5 2 5 Insulate the copper pipe Before ...

Page 93: ...e pipe and fix it by supporter For horizontal refrigerant pipe the distance between supporters should not be exceed 1m For vertical refrigerant pipe the distance between supporters 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 t...

Page 94: ... 18K 18K 30m L L1 L2 24K 24K 50m 30K 30K 50m Max branch pipe length 15m L1 L2 Max branch pipe length difference 10m L1 L2 Drop Height Max height difference between indoor unit and outdoor unit 20m H1 Max height difference between indoor units 0 5m H2 5 3 2 Size of joint pipes for indoor unit R410a 5 3 3 Size of joint pipes for outdoor unit R410a 5 3 4 The branching pipe must be installed horizonta...

Page 95: ...Refrigerant pipe installation Installation 93 ...

Page 96: ...ter flowrate is decided by the capacity of indoor unit Relationship between water flowrate and capacity of indoor unit Capacity x1000Btu Water flowrate l h 12 2 4 18 4 24 6 30 7 36 8 42 10 48 12 60 14 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 inne...

Page 97: ...ng distance Gas 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 c...

Page 98: ...witch Refer the following 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 ...

Page 99: ...at drainage outlet 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 wate...

Page 100: ...mHg after 1 5 hours 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 moist...

Page 101: ...uid pipe m Note 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 c...

Page 102: ... environment place 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 t...

Page 103: ...ield wiring construction 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 tab...

Page 104: ... units The gas side 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...

Page 105: ...Electrical Control System Electrical Control System 103 Part 5 Electrical Control System 1 Electrical Control Function 104 2 Troubleshooting 114 ...

Page 106: ... slowly B Normal A Frequency holding Frequency limit2 T5 Compressor off Frequency limit Normal Frequency holding 1 2 3 Sensor protection at open circuit and breaking disconnection 1 2 5 Indoor fan delayed open function When the unit starts up the louver will be active immediately and the indoor fan will open 7s later If the unit runs in heating mode the indoor fan will be also controlled by anti c...

Page 107: ...e is displayed 3 The louver operates same as in cooling mode 4 Auto fan a b c d T1 24 e H H L 0 75 L H L 0 5 L H L 0 25 L L 1 3 2 Cooling Mode 1 3 2 1 Outdoor fan running rules The outdoor unit will be run at different fan speed according to T4 For different outdoor units the fan speeds are different 12K T4 Frequency linkage area C D E F G A A Frequency linkage area Frequency of compressor operati...

Page 108: ...Setting fan speed Actual fan speed H H H G A H H B C M M M Z D M M M E F L L L D G L L L H I T1 Td F L L L L D H H H H G M M M M Z The auto fan acts as below rules a b c d T1 Td e H H L 0 75 L H L 0 5 L H L 0 25 L L 1 3 2 3 Evaporator low temperature T2 protection T2 0 the compressor will stop and restart when T2 5 0 T2 4 the compressor frequency will be limited and decreased to the lower level 4 ...

Page 109: ...temperature T3 protection 12K 18 60K T3 Increase slowly Off Decrease Hold Resume T3 Resume Off Decrease Hold 1 3 3 Heating Mode 1 3 3 1 Outdoor fan running rules 12K T4 A A Frequency linkage area Frequency linkage area Frequency of compressor operation B C A A 18 60K T4 E D C B A A ...

Page 110: ...will be forced to run 127 seconds with breeze During this period the anti cold wind is disabled Auto fan action in heating mode T1 Td L H L 0 4 L H L 0 6 L H H L 0 8 L H L 0 6 L H L 0 2 L 1 3 3 3 Defrosting mode Condition of defrosting AC will enter the defrosting mode according to the value of temp of T3 and the value range of temp change of T3 and also the compressor running time Condition of en...

Page 111: ...es mode between heating and cooling the compressor will keep stopping for 15 minutes and then choose mode according to T1 Ts If the setting temperature is modified the machine will choose running function again 1 3 5 Drying mode Indoor fan speed is fixed at breeze and can t be changed All protections are active and the same as that in cooling mode 1 3 6 Timer function 1 3 6 1 Timing range is 24 ho...

Page 112: ...morizes the setting conditions before the power failure The unit will resume the previous operation setting not including economy function and auxiliary functions automatically after 3 minutes when power returns 1 3 9 Drain pump control For Cassette Adopt the water level switch to control the action of drain pump Main action under different condition every 5 seconds the system will check the water...

Page 113: ...mes it will display the content corresponding to No N After getting into the check function it will display No N with 1 5s meanwhile the low bit decimal of digit display flashing indicated to get into the check function display After 1 5s it will display the content corresponding to No N the digital display tube will display the follow procedure when push SW1 each time N Display Remark 00 Normal d...

Page 114: ...an communicate with outdoor unit well General 1 Twins 2 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 heating T2 cooling T2...

Page 115: ...tion 10 Evaporator low temperature T2 protection 11 Condenser high temperature T3 protection 12 Low indoor room temperature protection in drying mode 13 Too low ambient temperature protection 14 Refrigerant leakage detection 15 Communication malfunction between indoor and outdoor units 16 Communication error between outdoor main chip and compressor driven chip IR341 17 AC power input voltage prote...

Page 116: ...xplanation on indoor display board MUCR H6 OPERATION TIMER DEF FAN ALARM Temporary button Operation lamp Timer indicator Infrared signal receiver Alarm indicator PRE DEF indicator cooling and heating type or fan only indicator cooling only type MANUAL Display digital tube 2 1 3 Icon explanation on indoor display board MUCSR 12 18 H6 2 1 4 Display board of Ceiling floor indoor unit ...

Page 117: ...ster and slave unit for twins system E8 X 9 Another indoor unit malfunction for twins system E9 X 10 Overcurrent protection For some units F0 O 1 Open or short circuit of T4 temperature sensor F1 O 2 Open or short circuit of T3 temperature sensor F2 O 3 Open or short circuit of T5 temperature sensor F3 O 4 Outdoor EEPROM malfunction For some units F4 O 5 Outdoor fan speed has been out of control F...

Page 118: ...otection For some units F0 O 1 Open or short circuit of T4 temperature sensor F1 O 2 Open or short circuit of T3 temperature sensor F2 O 3 Open or short circuit of T5 temperature sensor F3 O 4 Outdoor EEPROM malfunction For some units F4 O 5 Outdoor fan speed has been out of control F5 O 6 Open or short circuit of T2B temperature sensor For Multi H6 systems F6 O 7 Communication error between auto ...

Page 119: ...ntrol P0 IPM module protection P1 DC voltage too high or too low protection P3 Protection of ultra low ambient temperature P4 Rotor position protection of compressor J0 High temperature protection of evaporator J1 High temperature protection of condenser J2 High discharge temperature protection J3 PFC module protection J4 Communication error between outdoor main chip and compressor driven chip J5 ...

Page 120: ...the indoor PCB Replace the indoor PCB Measure the resistance value of the sensor via Appendix 1 Measure the resistance value of the sensor via Appendix 1 Is it 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 display...

Page 121: ...switch is inserted well No Insert the water level switch well Insert the water level switch well If the water level switch is broken If the water level switch is broken Yes Replace the water level switch Replace the water level switch Replace the water pump If malfunction is still not solved Replace the water pump If malfunction is still not solved Yes No Yes Replace the indoor main PCB Replace th...

Page 122: ...rews which fix the fan are tighten Check the wiring of fan motor Are all the connections good Check the wiring of fan motor Are all the connections good No Yes No Correct the connections Correct the connections No Replace the fan motor Replace the fan motor Yes Yes Replace the main PCB Replace the main PCB No Check whether the main PCB is normal through index 1 Check whether the main PCB is normal...

Page 123: ... there any leakage Especially the connection parts such as the gas valve and the liquid valve No Shut off the power supply and turn it on 2 minutes later Is it still displaying the error code Replace indoor PCB Yes Repair the leakage and recharge the refrigerant Yes Clear the blocking Yes Is there any blocking Such as the capillary or the welded points of the pipes 2 4 1 7 Communication malfunctio...

Page 124: ...el 2 4 2 2 Up down panel is defective F1 Displayed F1 Displayed Up down panel is defective Up down panel is defective Retry if panel can up and down normally Retry if panel can up and down normally Check the wiring of left and right sensors Check the wiring of left and right sensors No No The up down panel is defective replace it The up down panel is defective replace it Yes No If panel can move s...

Page 125: ... No Check the PQE communication wires connection is it good enough Check the PQE communication wires connection is it good enough Yes Correct the wire connections Correct the wire connections No One of the 2 indoor PCBs is defective Connect only one indoor unit to the outdoor unit separately The one caused E1 error code is defective One of the 2 indoor PCBs is defective Connect only one indoor uni...

Page 126: ...ED1 Green off LED2 Red flash or LED1 Green flash LED2 Red on Is there at least one LED in the compressor driven chip light Is there at least one LED in the compressor driven chip light Check the signal wire between the Compressor driven chip and the compressor is it connected good Check the signal wire between the Compressor driven chip and the compressor is it connected good Reconnect and retry I...

Page 127: ...utes later MCE malfunction MCE malfunction 2 4 4 4 F4 malfunction Yes Replace the outdoor main PCB Replace the outdoor main PCB Power off then restart the unit 2 minutes later Power off then restart the unit 2 minutes later Outdoor EEPROM malfunction Outdoor EEPROM malfunction F4 Display F4 Display EEPROM An electrically erasable programmable read only memory whose contents can be erased and repro...

Page 128: ...place the outdoor main PCB Power on Is the error extinguished Replace the outdoor main PCB Power on Is the error extinguished Check the outdoor wiring connection Check the outdoor wiring connection Replace the indoor main PCB Power on Is the error extinguished Replace the indoor main PCB Power on Is the error extinguished Yes Replace the outdoor main PCB Replace the outdoor main PCB No Replace the...

Page 129: ...k No No Replace indoor main PCB is the error 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 C...

Page 130: ...ignal wire between the Compressor driven chip and the main board is it connected good Reconnect and retry Is error still display Reconnect and retry Is error still display Replace Compressor driven chip and then check whether the system can run normally Replace Compressor driven chip and then check whether the system can run normally Replace the electric control box Replace the electric control bo...

Page 131: ...emperature sensor T4 is broken off 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 ...

Page 132: ...ridge 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 the wiring of reactor or inductance Check the wiring of rea...

Page 133: ...e outdoor ambient temperature is higher than 50 Check whether the outdoor ambient temperature 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...

Page 134: ... 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 Check whether valve c...

Page 135: ...rmal 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 the wiring of reactor or inductance Check the wiring of reactor or inductance Reconnect the wiring Reconnect the wiring No Check whether reactor...

Page 136: ...r the connection is right between compressor 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 ...

Page 137: ...f 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 system is ok Check whether the refrigerant system is ok Replace ou...

Page 138: ...o 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 Check whether reactor or inductance is normal Yes Replace reactor...

Page 139: ...stance of T2 is normal refer 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...

Page 140: ... 6 13059 76 1 34105 116 0 40060 3 41 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 21...

Page 141: ...489 5 234 9 35 35 78 75 8 084 115 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 ...

Page 142: ...dix 3 Normal voltage of P and 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 ...

Page 143: ... ASK FOR MORE INFORMATION Phone 34 93 446 27 81 eMail info mundoclima com TECHNICAL ASSISTANCE Phone 34 93 652 53 57 www mundoclima com ...

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