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Panasonic U-4..6ML5XPQ, Service Manual

Introducing the Panasonic U-4..6ML5XPQ, a cutting-edge product designed for exceptional performance. Unlock its full potential with the comprehensive service manual available for free download on our website. Discover expertly crafted instructions and troubleshooting steps to ensure seamless usage. Enhance your experience with our user-friendly manual today at manualshive.com.

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Field Setting

92

Test Operation

3.1.5 Applicable Range of Field Setting

Ceiling mounted cassette

 
 

Concealed 

ceiling unit 
(small)

Concealed 
ceiling unit

Concealed 

ceiling unit 
(large)

Ceiling 
suspended 
unit

Wall 
mounted 
unit

Floor 
standing 
unit

Concealed 
floor 
standing unit

Roundflow 4-way 

blow

2-way 
blow

Corner 
type

UM4 

  YM3 

 LM3 

  DM3 

  NM3 

 FM3 

  EM3 

  TM3 

 KM3 

 PM3 

  RM3

Filter sign

{

{

{

{

{

{

{

{

{

{

{

Ultra long life 
filter sign

{

{

{

—

—

—

—

—

—

—

—

Remote 
controller 
thermostat 
sensor

{

{

{

{

{

{

{

{

{

{

{

Set fan 
speed when 
thermostat 
OFF

{

{

{

{

{

{

{

{

{

{

{

Air flow 
adjustment 
Ceiling 
height

{

—

—

—

—

—

—

{

—

—

—

Air flow 
direction

{

{

—

—

—

—

—

—

—

—

—

Air flow 
direction 
adjustment 
(Down flow 
operation)

—

—

—

{

—

—

—

—

—

—

—

Air flow 
direction 
adjustment 
range

{

{

{

{

—

—

—

—

—

—

—

Field set fan 
speed 
selection

{

—

—

—

  —

—

—

{

—

—

—

Discharge 
air temp. 
(Cooling)

—

—

—

—

—

—

—

—

—

—

—

Discharge 
air temp. 
(Heating)

—

—

—

—

—

—

—

—

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Urban Multi ML5 · Mini UM · Heat Pump

Summary of Contents for U-4..6ML5XPQ

Page 1: ...Service Manual U 4 6ML5XPQ DPQ Urban Multi Mini UM Heat Pump ...

Page 2: ......

Page 3: ...29 1 List of Electrical and Functional Parts 30 1 1 Outdoor Unit 30 1 2 Indoor Unit 32 Part 4 Refrigerant Circuit 39 1 Refrigerant Circuit 40 1 1 Outdoor Unit 40 2 Functional Parts Layout 44 2 1 U 4 5 6ML5XPQ 44 2 2 U 4 5 6ML5DPQ 45 Part 5 Function 47 1 Operation Mode 48 2 Basic Control 49 2 1 Normal Operation 49 2 2 Compressor PI Control 50 2 3 Electronic Expansion Valve PI Control 51 2 4 Cooling...

Page 4: ...3 2 Field Setting from Outdoor Unit 104 Part 7 Troubleshooting 123 1 Symptom based Troubleshooting 125 2 Troubleshooting by Remote Controller 128 2 1 The INSPECTION TEST Button 128 2 2 Self diagnosis by Wired Remote Controller 129 2 3 Self diagnosis by Wireless Remote Controller 130 2 4 Operation of the Remote Controller s Inspection Test Operation Button 132 2 5 Remote Controller Service Mode 133...

Page 5: ...ermistor R2T 175 3 28 J5 Outdoor Unit Malfunction of Thermistor R3T R5T for Suction Pipe 1 2 176 3 29 J6 Outdoor Unit Malfunction of Thermistor R6T 177 3 30 J7 Outdoor Unit Malfunction of Thermistor R7T for Outdoor Unit Liquid Pipe 178 3 31 J9 Outdoor Unit Malfunction of Thermistor R4T 179 3 32 JA Outdoor Unit Malfunction of High Pressure Sensor 180 3 33 JC Outdoor Unit Malfunction of Low Pressure...

Page 6: ...ing 211 5 Troubleshooting by Indication on the Unified ON OFF Controller 212 5 1 Operation Lamp Blinks 212 5 2 Display Under Host Computer Integrate Control Blinks Repeats Single Blink 214 5 3 Display Under Host Computer Integrate Control Blinks Repeats Double Blink 217 Part 8 Appendix 221 1 Piping Diagrams 222 1 1 Outdoor Unit 222 1 2 Indoor Unit 224 2 Wiring Diagrams 227 2 1 Outdoor Unit 227 2 2...

Page 7: ...t before disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas discharges during the repair work do not touch the discharging refriger...

Page 8: ...d appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools can cause an electrical shock excessive heat generation or fire When relocating the equipment make sure that the new installation site has sufficient strength to withstand the weight of the equipment If the installation site does not have sufficient strength and if the installat...

Page 9: ...to prevent the refrigerant gas from leaking into the room The refrigerant gas itself is harmless but it can generate toxic gases when it contacts flames such as fan and other heaters stoves and ranges When replacing the coin battery in the remote controller be sure to disposed of the old battery to prevent children from swallowing it If a child swallows the coin battery see a doctor immediately Wa...

Page 10: ...asure the insulation resistance after the repair and make sure that the resistance is 1 Mohm or higher Faulty insulation can cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage can cause the water to enter the room and wet the furniture and floor Icon Type of Information Description Note Note A note provides information that is not indispensa...

Page 11: ... Heat Pump System Panasonic offers a wide range of models to respond to building and office air conditioning needs We are confident that customers will be able to find the models that best suit their needs This service manual contains information regarding the servicing of UM ML5 series R 410A Heat Pump System July 2008 After Sales Service Division Panasonic ...

Page 12: ...Introduction x Urban Multi ML5 Mini UM Heat Pump ...

Page 13: ...General Information 1 Part 1 General Information 1 Model Names of Indoor Outdoor Units 2 2 External Appearance 3 2 1 Indoor Units 3 3 Capacity Range 4 Panasonic ...

Page 14: ...eiling Mounted Cassette Type Mult Flow YM3 20 25 32 40 50 V1 Ceiling Mounted Cassette Corner Type DM3 25 32 40 63 VE Ceiling Mounted Built In Type FM3 20 25 32 40 50 63 80 100 125 Ceiling Mounted Duct Type EM3 40 50 63 80 100 125 VE Ceiling Suspended Type TM3 32 63 100 Wall Mounted Type KM3 20 25 32 40 50 63 Floor Standing Type PM3 20 25 32 40 50 63 Concealed Floor Standing Type RM3 20 25 32 40 50...

Page 15: ...nit S 32TM3JPR S 63TM3JPR S 100TM3JPR 2 Way Blow Ceiling Mounted Cassette S 20LM3HPQ S 25LM3HPQ S 32LM3HPQ S 40LM3HPQ S 50LM3HPQ S 63LM3HPQ S 80LM3HPQ S 125LM3HPQ Wall Mounted Unit S 20KM3HPR S 25KM3HPR S 32KM3HPR S 40KM3HPR S 50KM3HPR S 63KM3HPR Ceiling Mounted Corner Cassette S 25DM3HPS S 32DM3HPS S 40DM3HPS S 63DM3HPS Floor Standing Unit S 20PM3HPS S 25PM3HPS S 32PM3HPS S 40PM3HPS S 50PM3HPS S ...

Page 16: ...25 32 40 50 63 80 125 Ceiling Mounted Cassette Type Round Flow UM4 20 25 32 40 50 63 80 100 125 600 600 Ceiling Mounted Cassette Type Multi Flow YM3 20 25 32 40 50 Ceiling Mounted Cassette Corner Type DM3 25 32 40 63 Ceiling Mounted Built In Type FM3 20 25 32 40 50 63 80 100 125 Ceiling Mounted Duct Type EM3 40 50 63 80 100 125 Ceiling Suspended Type TM3 32 6 3 100 Wall Mounted Type KM3 20 25 32 4...

Page 17: ...Specifications 5 Part 2 Specifications 1 Specifications 6 1 1 Outdoor Units 6 1 2 Indoor Units 10 Panasonic ...

Page 18: ...eat Exchanger Dimensions Length mm 857 857 857 Nr of Rows 2 2 2 Fin Pitch mm 2 2 2 Nr of Passes 10 10 10 Face Area m 1 131 Nr of Stages 60 60 60 Tube type Hi XSS 8 Fin Fin type Non symmetric waffle louvre Treatment Corrosion resistant Fan Type Propeller Quantity 2 2 2 Air Flow Rate nominal at 230V Cooling m min 106 106 106 Heating m min 102 105 105 Discharge direction Horizontal Motor Quantity 2 2...

Page 19: ...ost Control Sensor for outdoor heat exchanger temperature Capacity Control Method Inverter controlled Capacity Control 24 to 100 Safety devices HPS Fan motor thermal protection Inverter overload protector PC board fuse Standard Accessories Installation manual Operation manual Installation manual Operation manual Connection pipes Notes Nominal cooling capacities are based on indoor temperature 27 C...

Page 20: ...tch mm 2 2 2 Nr of Passes 10 10 10 Face Area m 1 131 Nr of Stages 60 60 60 Tube type Hi XSS 8 Fin Fin type Non symmetric waffle louvre Treatment Corrosion resistant Fan Type Propeller Quantity 2 2 2 Air Flow Rate nominal at 230V Cooling m min 106 106 106 Heating m min 102 105 105 Discharge direction Horizontal Motor Quantity 2 2 2 Model Brushless DC motor Motor Speed nominal Cooling rpm 850 815 He...

Page 21: ...ation Both liquid and gas pipes Max total length m 300 300 300 Defrost Method Reversed cycle Defrost Control Sensor for outdoor heat exchanger temperature Capacity Control Method Capacity Control Inverter controlled 24 to 100 Safety devices HPS Fan motor thermal protection Inverter overload protector PC board fuse Standard Accessories Installation manual Operation manual Installation manual Operat...

Page 22: ...XSS 7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantity 1 1 1 2 2 Air Flow Rate Cooling High m min 7 0 9 0 9 0 12 0 12 0 Low m min 5 0 6 5 6 5 9 0 9 0 Heating High m min 7 0 9 0 9 0 12 0 12 0 Low m min 5 0 6 5 6 5 9 0 9 0 Fan Motor Quantity 1 1 1 1 1 Steps Phase cut control Output high W 10 15 15 20 20 Drive Direct drive Refrigerant Name R 410A Sound Level Co...

Page 23: ...s Screws for fixing the paper pattern for installation Washer for hanging bracket Installation and operation manual Paper pattern for installation Insulation for fitting Drain hose Notes Nominal cooling capacities are based on indoor temperature 270CDB 190CWB outdoor temperature 350CDB equivalent refrigerant piping 8m level difference 0m Nominal heating capacities are based on indoor temperature 2...

Page 24: ... 0 39 0 Heating Sound Pressure High dBA 38 0 40 0 45 0 Low dBA 33 0 35 0 39 0 Piping connections Liquid OD Type Flare connection Diameter mm 9 5 9 5 9 5 Gas Type Flare connection Diameter mm 15 9 15 9 15 9 Drain Diameter mm 32 32 32 Heat Insulation Both liquid and gas pipes Decoration Panel Model CZ 03KPL11P CZ 06KPL11P CZ 06KPL11P Colour White 10Y9 0 5 Dimensions Height mm 53 53 53 Width mm 1430 ...

Page 25: ...ng Sound power nominal dBA 49 49 49 50 51 Cooling Sound Pressure High dBA 31 31 31 32 33 Low dBA 28 28 28 28 28 Heating Sound Pressure High dBA 31 31 31 32 33 Low dBA 28 28 28 28 28 Piping connections Liquid OD Type Flare connection Diameter mm 6 35 6 4 6 4 6 4 6 4 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 12 7 12 7 Drain Diameter mm VP25 I D 25 O D 32 Heat Insulation Foamed polystyrene...

Page 26: ... 58 61 Cooling Sound Pressure High dBA 34 38 41 44 Low dBA 29 32 33 34 Heating Sound Pressure High dBA 36 38 42 44 Low dBA 30 32 34 34 Piping connections Liquid OD Type Flare connection Diameter mm 9 5 9 5 9 5 9 5 Gas Type Flare connection Diameter mm 15 9 15 9 15 9 15 9 Drain Diameter mm VP25 I D 25 O D 32 Heat Insulation Foamed polystyrene polyethylene Sound absorbing insulation Foamed Polyureth...

Page 27: ...A 25 0 25 0 26 0 28 0 33 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 6 4 6 4 6 4 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 12 7 12 7 Drain Diameter mm 26 26 26 26 26 Heat Insulation Foamed polystyrene polyethylene Decoration Panel Model CZ 02KPY12P Colour White Ral 9010 Dimensions Height mm 55 55 55 55 55 Width mm 700 700 700 700 700 Depth mm 700 700 700 700...

Page 28: ...tion Diameter mm 12 7 12 7 12 7 15 9 Drain Diameter mm 32 32 32 32 Heat Insulation Foamed Polyethylene Decoration Panel Model CZ 02KPD11P CZ 02KPD11P CZ 02KPD11P CZ 03KPD11P Colour White Dimensions Height mm 70 70 70 70 Width mm 1240 1240 1240 1440 Depth mm 800 800 800 800 Weight kg 8 5 8 5 8 5 9 5 Air Filter Resin net with mold resistance Refrigerant control Electronic expansion valve Temperature...

Page 29: ...10 10 Drive Direct drive Refrigerant Name R 410A Sound Level Cooling Sound power nominal dBA 50 0 50 0 Cooling Sound Pressure High dBA 37 0 37 0 Low dBA 32 0 32 0 Heating Sound Pressure High dBA 37 0 37 0 Low dBA 32 0 32 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 Gas Type Flare connection Diameter mm 12 7 12 7 Drain Diameter mm 27 2 27 2 Air Filter Resin net with mold...

Page 30: ...re High dBA 32 0 32 0 33 0 33 0 35 0 Low dBA 28 0 28 0 28 0 29 0 31 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 35 6 35 6 35 6 35 6 35 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 12 7 12 7 Drain Diameter mm 32 32 32 32 32 Heat Insulation Both liquid and gas pipes Decoration Panel Model CZ 01HPF11P CZ 01HPF11P CZ 01HPF11P CZ 02HPF11P CZ 02HPF11P Colour White 10Y9 0 5...

Page 31: ... connections Liquid OD Type Flare connection Diameter mm 9 5 9 5 9 5 9 5 Gas Type Flare connection Diameter mm 15 9 15 9 15 9 15 9 Drain Diameter mm 32 32 32 32 Heat Insulation Both liquid and gas pipes Decoration Panel Model CZ 03HPF11P CZ 06HPF11P CZ 06HPF11P CZ 06HPF11P Colour White 10Y9 0 5 Dimensions Height mm 55 55 55 55 Width mm 1100 1500 1500 1500 Depth mm 500 500 500 500 Weight kg 4 5 6 5...

Page 32: ...OD Type Flare connection Diameter mm 6 35 9 52 9 52 9 52 9 52 9 52 Gas Type Flare connection Diameter mm 12 7 15 9 15 9 15 9 15 9 15 9 Drain Diameter mm VP25 I D 32 O D 25 Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating Safety devices Fuse Fan driver overload protector Standard Accessories Operation manual Installation manual Dra...

Page 33: ...h dBA 36 0 39 0 45 0 Low dBA 31 0 34 0 37 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 9 5 9 5 Gas Type Flare connection Diameter mm 12 7 15 9 15 9 Drain Diameter mm 26 26 26 Heat Insulation Glass wool Air Filter Resin net with mold resistance Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating Safety devices ...

Page 34: ... Output high W 40 40 40 43 43 43 Drive Direct drive Refrigerant Name R 410A Cooling Sound Pressure High dBA 35 0 36 0 37 0 39 0 42 0 46 0 Low dBA 29 0 29 0 29 0 34 0 36 0 39 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 6 4 6 4 6 35 9 5 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 12 7 12 7 15 9 Drain Diameter mm 18 18 18 18 18 18 Heat Insulation Foamed polystyre...

Page 35: ...25 25 35 35 Drive Direct drive Refrigerant Name R 410A Cooling Sound Pressure High dBA 35 0 35 0 35 0 38 0 39 0 40 0 Low dBA 32 0 32 0 32 0 33 0 34 0 35 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 6 4 6 4 6 4 9 5 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 12 7 12 7 15 9 Drain Diameter mm O D 21 Heat Insulation Glass Fiber Urethane Foam Air Filter Resin net wi...

Page 36: ...35 Drive Direct drive Refrigerant Name R 410A Cooling Sound Pressure High dBA 35 0 35 0 35 0 38 0 39 0 40 0 Low dBA 32 0 32 0 32 0 33 0 34 0 35 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 6 4 6 4 6 4 9 5 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 12 7 12 7 15 9 Drain Diameter mm O D 21 Heat Insulation Glass Fiber Urethane Foam Air Filter Resin net with mold r...

Page 37: ...Specifications Specifications 25 Panasonic ...

Page 38: ...Specifications 26 Specifications Urban Multi ML5 Mini UM Heat Pump ...

Page 39: ...Specifications Specifications 27 Panasonic ...

Page 40: ...Specifications 28 Specifications Urban Multi ML5 Mini UM Heat Pump ...

Page 41: ...List of Electrical and Functional Parts 29 Part 3 List of Electrical and Functional Parts 1 List of Electrical and Functional Parts 30 1 1 Outdoor Unit 30 1 2 Indoor Unit 32 Panasonic ...

Page 42: ...5A Solenoid valve Hot gas Y2S TEV1620DQ2 A1P X26A Solenoid valve Unload circuit Y3S TEV1620DQ2 A1P X27A Pressure related parts Pressure switch INV S1PH ACB 4UB10 OFF 4 0 0 0 15MPa ON 3 0 0 15MPa A1P X32A Pressure sensor HP S1NPH PS8051A 0 4 15MPa A1P X17A Pressure sensor LP S1NPL PS8051A 0 05 1 7MPa A1P X18A Thermistor Main PCB For outdoor air R1T 3 5 360kΩ A1P X11A For discharge pipe R2T 5 0 640k...

Page 43: ... gas Y2S TEV1620DQ2 A1P X26A Solenoid valve Unload circuit Y3S TEV1620DQ2 A1P X27A Pressure related parts Pressure switch INV S1PH ACB 4UB10 OFF 4 0 0 0 15MPa ON 3 0 0 15MPa A1P X32A Pressure sensor HP S1NPH PS8051A 0 4 15MPa A1P X17A Pressure sensor LP S1NPL PS8051A 0 05 1 7MPa A1P X18A Thermistor Main PCB For outdoor air R1T 3 5 360kΩ A1P X11A For discharge pipe R2T 5 0 640kΩ A1P X12A 1 2Pin For...

Page 44: ...r R2T ST8602A 5 φ6 L1000 20kΩ 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A φ5 2 Thermal Fuse TFu Transformer T1R Parts Name Symbol Model Remark S 20LM3 HPQ S 25LM3 HPQ S 32LM3 HPQ S 40LM3 HPQ S 50LM3 HPQ S 63LM3 HPQ S 80LM3 HPQ S 120 LM3 HPQ Remote Controller Wired Remote Controller CZ 02RT11P Option Wireless Remote Controller CZ 01RWL12P Motors Fan Motor M1F AC 220 240V 50Hz 1φ10W 1φ15W...

Page 45: ... Thermistor Heat Exchanger R2T ST8602A 3 φ6 L630 20kΩ 25 C Others Float Switch S1L FS 0211 Fuse F1U 250V 5A φ5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark S 25DM3 HPS S 32DM3 HPS S 40DM3 HPS S 63DM3 HPS Remote Controller Wired Remote Controller CZ 02RT11P Option Wireless Remote Controller CZ 02RWD12P Motors Fan Motor M1F AC 220 240V 50Hz 1φ15W 4P 1φ20W 4P 1φ45W 4P Thermal Fuse 146 C...

Page 46: ...less Remote Controller CZ 02RWF12P Motors Fan Motor M1F AC 200 240V 50 60Hz 1φ10W4P Thermal protector 135 C OFF 87 C ON Thermistors Thermistor Suction Air R1T ST8601 4 φ4 L 800 20kΩ 25 C Thermistor for Heat Exchanger High Temp R3T ST8605 7 φ8 L 1600 20kΩ 25 C Thermistor Heat Exchanger R2T ST8602A 6 φ6 L 1250 20kΩ 25 C Others Fuse F1U 250V 10A Transformer T1R TR22H21R8 Urban Multi ML5 Mini UM Heat ...

Page 47: ...igh Temp R3T ST8605 7 φ8 L1600 20kΩ 25 C Thermistor Heat Exchanger R2T ST8602A 6 φ6 L1250 20kΩ 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A φ5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark S 40EM3 HPS S 50EM3 HPS S 63EM3 HPS S 80EM3 HPS S 100EM3 HPS S 125EM3 HPS Remote Controller Wired Remote Controller CZ 02RT11P Wireless Remote Controller CZ 02RWF12P Motors Fan Motor M1F D...

Page 48: ... 25 C Thermistor Heat Exchanger R2T ST8602A 6 φ6 L 1250 20kΩ 25 C ST8602A 6 φ6 L 1250 20kΩ 25 C Others Fuse F1U 250V 5A φ5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark S 20KM3 HPR S 25KM3 HPR S 32KM3 HPR S 40KM3 HPR S 50KM3 HPR S 63KM3 HPR Remote Controller Wired Remote Controller CZ 02RT11P Option Wireless Remote Controller CZ 01RWK22P Motors Fan Motor M1F AC 220 240V 50Hz 1φ40W 1φ4...

Page 49: ...5 9 φ8 L2500 20kΩ 25 C Thermistor for Heat Exchanger R2T ST8602A 9 φ6 L2500 20kΩ 25 C Others Fuse F1U AC250V 5A Transformer T1R TR22H21R8 Parts Name Symbol Model Remark S 20PM3 HPS S 25PM3 HPS S 32PM3 HPS S 40PM3 HPS S 50PM3 HPS S 63PM3 HPS Remote Controller Wired Remote Controller CZ 02RT11P Option Wireless Remote Controller CZ 02RWF12P Motors Fan Motor M1F AC 220 240V 50Hz 1φ15W 1φ25W 1φ35W Ther...

Page 50: ...List of Electrical and Functional Parts 38 List of Electrical and Functional Parts Urban Multi ML5 Mini UM Heat Pump ...

Page 51: ...Refrigerant Circuit 39 Part 4 Refrigerant Circuit 1 Refrigerant Circuit 40 1 1 Outdoor Unit 40 2 Functional Parts Layout 44 2 1 U 4 5 6ML5XPQ 44 2 2 U 4 5 6ML5DPQ 45 Panasonic ...

Page 52: ...h pressure when a malfunction occurs this switch is activated at high pressure of 4 0 MPa or more to stop the compressor operation T Pressure regulating valve 1 Receiver to discharge pipe This valve opens at a pressure of 4 0 MPa for prevention of pressure increase thus resulting in no damage of functional parts due to the increase of pressure in transportation or storage 1 R1T Thermistor Outdoor ...

Page 53: ...Refrigerant Circuit Refrigerant Circuit 41 C 3D052628 A P G N M D D O H F E T Subcooling heat exchanger Panasonic ...

Page 54: ...alfunction occurs this switch is activated at high pressure of 4 0 MPa or more to stop the compressor operation T Pressure regulating valve 1 Receiver to discharge pipe This valve opens at a pressure of 4 0 MPa for prevention of pressure increase thus resulting in no damage of functional parts due to the increase of pressure in transportation or storage 1 R1T Thermistor Outdoor air Ta Used to dete...

Page 55: ...Refrigerant Circuit Refrigerant Circuit 43 C 3D052712 A P G N M D D O H F E T Subcooling heat exchanger Panasonic ...

Page 56: ...HIGH VOLTAGE THERMISTOR DISCHARGE R2T SOLENOID VALVE LEAD WIRE Y3S CONNECTOR COLOR PINK HIGH VOLTAGE PRESSURE SWITCH LEAD WIRE S1PH CONNECTOR COLOR WHITE THERMISTOR SUBCOOLING GAS PIPE RXYSQ PA7Y1B R4T CONNECTOR COLOR WHITE R7T THERMISTOR LIQUID PIPE 1 R3T THERMISTOR SUCTION 1 MARKING COLOR RED Y1S 4 WAY VALVE LEAD WIRE CONNECTOR COLOR BLUE HIGH VOLTAGE Y1E ELECTRONIC EXPANSION VALVE CONNECTOR COL...

Page 57: ... VOLTAGE S1NPH PRESSURE SENSOR HIGH LEAD WIRE CONNECTOR COLOR RED LOW VOLTAGE S1NPL PRESSURE SENSOR LOW CONNECTOR COLOR BLUE Y1S 4 WAY VALVE LEAD WIRE CONNECTOR COLOR BLUE HIGH VOLTAGE Y3S SOLENOID VALVE LEAD WIRE CONNECTOR COLOR PINK HIGH VOLTAGE Y1E ELECTRIC EXPANSION VALVE CONNECTOR COLOR WHITE Y3E ELECTRIC EXPANSION VALVE MARKING COLOR BLUE R7T THERMISTOR LIQUID PIPE 1 MARKING COLOR BLUE R3T T...

Page 58: ...THERMISTOR LIQUID PIPE 1 MARKING COLOR BLUE R3T THERMISTOR SUCTION 1 MARKING COLOR RED R1T THERMISTOR AIR MARKING COLOR YELLOW R8T THERMISTOR LIQUID PIPE 2 CONNECTOR COLOR WHITE R4T THERMISTOR HEAT EXCHANGER CONNECTOR COLOR BLUE R6T THERMISTOR SUBCOOLING MARKING COLOR WHITE Urban Multi ML5 Mini UM Heat Pump ...

Page 59: ...9 4 Protection Control 60 4 1 High Pressure Protection Control 60 4 2 Low Pressure Protection Control 61 4 3 Discharge Pipe Protection Control 62 4 4 Inverter Protection Control 63 5 Other Control 64 5 1 Demand Operation 64 5 2 Heating Operation Prohibition 64 6 Outline of Control Indoor Unit 65 6 1 Drain Pump Control 65 6 2 Louver Control for Preventing Ceiling Dirt 67 6 3 Thermostat Sensor in Re...

Page 60: ...r PI control Electronic expansion valve PI control Protection control Indoor unit thermostat ON Defrost IN conditions are met No Yes Defrosting operation Cooling or heating operation Indoor unit thermostat ON Indoor unit stop or thermostat OFF Indoor unit stop or thermostat OFF Malfunction Standby Malfunction Standby Note In the event indoor unit stops or the thermostat turns OFF while in oil retu...

Page 61: ...lve OFF Main electronic expansion valve EV1 480 pls Subcooling electronic expansion valve EV3 PI control Hot gas bypass valve SVP OFF This valve turns on with low pressure protection control Actuator Operation Remarks Compressor Compressor PI control Used for high pressure protection control low pressure protection control discharge pipe temperature protection control and compressor operating freq...

Page 62: ...lue Varies depending on Tc setting operating frequency etc L M Normal factory setting H 43 46 49 STn INV Fullload INV Unload STn INV Fullload INV Unload STn INV Fullload INV Unload 1 36 0Hz 11 80 0Hz 21 140 0Hz 2 39 0Hz 12 86 0Hz 22 146 0Hz 3 43 0Hz 13 92 0Hz 23 152 0Hz 4 47 0Hz 14 98 0Hz 24 158 0Hz 5 52 0Hz 15 104 0Hz 25 164 0Hz 6 52 0Hz 57 0Hz 16 110 0Hz 26 170 0Hz 7 57 0Hz 64 0Hz 17 116 0Hz 27 ...

Page 63: ... discharge pipe superheated degree of inverter compressor Subcooling Electronic Expansion Valve EV3 Control Makes PI control of the electronic expansion valve Y3E to keep the superheated degree SH of the outlet gas pipe on the evaporator side for the full use of the subcooling heat exchanger SH Ts1 Te SH Evaporator outlet superheated degree C Ts1 Suction pipe temperature detected by thermistor R3T...

Page 64: ...r When outdoor temperature 12 C it will run in Step 1 or higher 850rpm 715rpm 580rpm 445rpm 360rpm 285rpm 400rpm 250rpm 0 rpm M1F 815rpm 680rpm 545rpm 410rpm 325rpm 250rpm 0 rpm 0 rpm 0 rpm M2F STEP3 STEP4 STEP5 STEP6 STEP7 STEP8 STEP2 STEP1 STEP0 Cooling Fan Steps Upper limit of fan revolutions Step 8 Upper limit of outdoor unit fan revolutions Step 7 1 step on outdoor unit fan 1 step on outdoor ...

Page 65: ...MPa is achieved Outdoor unit fan STEP7 Ta 20 C OFF Ta 20 C STEP4 1 step 15 sec when Pc 2 16MPa 1 step 15 sec when Pc 1 77MPa Four way valve 20S1 Holds OFF OFF Main electronic expansion valve EV1 0 pls 480 pls 480 pls Subcooling electronic expansion valve EV3 0 pls 0 pls 0 pls Hot gas bypass valve SVP OFF OFF OFF Ending conditions Pc Pe 0 3MPa A lapse of 1 to 5 min A lapse of 10 sec A lapse of 130 ...

Page 66: ...urn preparation operation Oil return operation Post oil return operation Compressor Take the current step as the upper limit 52 Hz Full load Low pressure constant control Same as the oil return operation mode Outdoor unit fan Fan control Normal cooling Fan control Normal cooling Fan control Normal cooling Four way valve OFF OFF OFF Main electronic expansion valve EV1 480 pls 480 pls 480 pls Subcoo...

Page 67: ...o reduce noise on changing of the four way valve Outdoor Unit Actuator Oil return preparation operation Oil return operation Post oil return operation Compressor Upper limit control 140 Hz Full load 2 step increase from 36 Hz Unload to Pc Pe 0 4 MPa every 20 sec Outdoor unit fan STEP8 OFF STEP8 Four way valve ON OFF ON Main electronic expansion valve EV1 SH control 480 pls 55 pls Subcooling electr...

Page 68: ... for 1 minute to reduce noise on changing of the four way valve Outdoor unit actuator Defrost preparation operation Defrost operation Post Defrost operation Compressor Upper limit control 140 Hz Full load 2 step increase from 36 Hz Unload to Pc Pe 0 4 MPa every 20 sec Outdoor unit fan STEP8 OFF STEP8 Four way valve ON OFF ON Main electronic expansion valve EV1 SH control 480 pls 55 pls Subcooling ...

Page 69: ...ual Operation in Heating Operation Actuator Pump down residual operation Step 1 Pump down residual operation Step 2 Compressor 124 Hz Full load 52 Hz Full load Outdoor unit fan Fan control Fan control Four way valve OFF OFF Main electronic expansion valve EV1 480 pls 240 pls Subcooling electronic expansion valve EV3 0 pls 0 pls Hot gas bypass valve SVP OFF OFF Ending conditions 2 sec 2 sec Actuato...

Page 70: ...sure in the refrigerant system Actuator Operation Remarks Compressor OFF Outdoor unit fan Ta 30 C STEP4 Ta 30 C OFF Four way valve Keep former condition Main electronic expansion valve EV1 0 pls Subcooling electronic expansion valve EV3 0 pls Hot gas bypass valve SVP OFF Ending conditions 2 min Urban Multi ML5 Mini UM Heat Pump ...

Page 71: ... up 3 6 1 When System is in Stop Mode Actuator Operation Compressor OFF Outdoor unit fan OFF Four way valve Keep former condition Main electronic expansion valve EV1 0 pls Subcooling electronic expansion valve EV3 0 pls Hot gas bypass valve SVP OFF Ending conditions Indoor unit thermostat is turned ON Panasonic ...

Page 72: ...e INV upper limit frequency 3 step down from current compressor frequency When occurring 10 times within 60 minutes HPS is activated without high pressure standby thus outputting the malfunction code E3 High pressure standby INV upper limit frequency Max High pressure drop Pc 3 04MPa After 10 sec Pc 3 04MPa Pc 2 94MPa Pc 3 64MPa Keeping the current step After 60 sec High pressure not limited High ...

Page 73: ...n 30 min the malfunction code E4 is output Pe 0 15MPa Pe 0 30MPa Hot gas SVP OFF Hot gas SVP ON Ts Teg 8deg Pe 0 06MPa Pe 0 09MPa or After 10 sec Pe 0 17MPa Pe 0 17MPa Pe 0 20MPa Pe 0 07MPa Current step limited After 15 sec Low pressure not limited Low pressure limited INV upper limit frequency 1 step up from current compressor frequency Pe LP pressure sensor detection value INV upper limit freque...

Page 74: ... Value of compressor port temperature calculated by Tc and Te and suction superheated degree or Discharge pipe protection control not limited INV upper limit frequency 1 step down from current compressor frequency INV upper limit frequency 1 step up from current compressor frequency 36 Hz Unload HTdi 115 C Tp 135 C or HTdi 135 C HTdi 120 C for 10 min or more or HTdi 110 C Tp 125 C After 30 sec Aft...

Page 75: ...ccurring 4 times within 60 min the malfunction code L8 is output INV upper limit frequency 1 step down from current compressor frequency INV upper limit frequency 1 step up from current compressor frequency Inverter current standby Inverter current 12A continues for 3 min Status quo Without conditions Not limited Limited Tfin 79 C Tfin 79 C Tfin 84 C Fin temp standby Tfin 76 C INV upper limit freq...

Page 76: ...ional setting of Continuous Demand Setting Demand 1 setting Other protection control functions have precedence over the above operation 5 2 Heating Operation Prohibition Heating operation is prohibited above 24 CDB outdoor air temperature Setting Standard for upper limit of power consumption Demand 1 setting 1 Approx 60 Demand 1 setting 2 factory setting Approx 70 Demand 1 setting 3 Approx 80 Urba...

Page 77: ...given in the figure below 6 1 1 When the Float Switch is Tripped while the Cooling Thermostat is ON 1 The objective of residual operation is to completely drain any moisture adhering to the fin of the indoor unit heat exchanger when the thermostat goes off during cooling operation 6 1 2 When the Float Switch is Tripped while the Cooling Thermostat is OFF Panasonic ...

Page 78: ...minutes operation 5 seconds stop 5 minutes operation cycle ends operation continues until the switch is reset 6 1 4 When the Float Switch is Tripped and AF is Displayed on the Remote Controller Note If the float switch is tripped five times in succession a drain malfunction is determined to have occurred AF is then displayed as operation continues Urban Multi ML5 Mini UM Heat Pump ...

Page 79: ...low and corner types P0 P1 P2 P4 P3 P0 P1 P2 P4 P3 P0 P0 P1 P2 P4 P4 P2 P1 P0 P4 P4 P3 P2 P1 P0 P3 Existing position Draft prevention position Standard Setting position Ceiling soiling prevention position Not for Multi flow type Draft prevention position Standard position Prohibited Prohibited Dirt prevention position P0 P0 P0 P1 P2 P2 P1 P3 P3 P4 P4 P1 P2 P3 P4 Same as existing position Separated...

Page 80: ... cooling Assuming the preset temperature in the figure above is 24 C and the suction temperature has changed from 18 C to 30 C A F This example also assumes there are several other air conditioners the UM system is off and that temperature changes even when the thermostat sensor is off Body thermostat sensor is used for temperatures from 18 C to 23 C A C Remote controller thermostat sensor is used...

Page 81: ... so that suction temperature is higher than the preset temperature Ex When heating Assuming the preset temperature in the figure above is 24 C and the suction temperature has changed from 18 C to 28 C A D This example also assumes there are several other air conditioners the UM system is off and that temperature changes even when the thermostat sensor is off Body thermostat sensor is used for temp...

Page 82: ...prevention operation in accordance with the following conditions and is also set in accordance with the conditions given below Conditions for starting freeze prevention Temperature is 1 C or less for total of 40 min or temperature is 5 C or less for total of 10 min Conditions for stopping freeze prevention Temperature is 7 C or more for 10 min continuously Ex Case where temperature is 5 C or less ...

Page 83: ...Level Level Level Halt Swinging OFF Level Level Level Setting the wind direction OFF Level Level Level Cooling Thermostat of microcomputer dry is on Swinging L 1 Swinging Swinging Swinging Setting the wind direction L 1 Set up Set up Set up Thermostat of microcomputer dry is off Swinging OFF or L Swinging Swinging Swinging Setting the wind direction Set up Set up Set up Cooling thermostat is off S...

Page 84: ...efrosting in heating operation the indoor unit fan is controlled to prevent cold air from blasting out and ensure startup capacity Detail of operation When either the start condition 1 or the start condition 2 is established the operations shown below will be conducted Cooling SH TH2 TH1 SH Evaporator outlet superheated degree Heating SC TC TH1 TH1 Temperature C detected with the liquid thermistor...

Page 85: ...on 1 Test Operation 74 1 1 Procedure and Outline 74 1 2 Operation when Power is Turned On 85 2 Outdoor Unit PC Board Layout 86 3 Field Setting 87 3 1 Field Setting from Remote Controller 87 3 2 Field Setting from Outdoor Unit 104 Panasonic ...

Page 86: ... Are the setscrews of wiring not loose Is the electrical component box covered with an insulation cover completely Is pipe size proper The design pressure of this product is 4 0MPa Are pipe insulation materials installed securely Liquid and gas pipes need to be insulated Otherwise causes water leak Are respective stop valves on liquid and gas line securely open Is refrigerant charged up to the spe...

Page 87: ...2 hours repeat the operation of vacuum break and vacuum drying Then after leaving the system in vacuum for 1 hour confirm that the vacuum gauge does not rise 1 1 4 Additional Refrigerant Charge Refrigerant cannot be charged until field wiring has been completed Refrigerant may only be charged after performing the leak test and the vacuum drying see above When charging a system care shall be taken ...

Page 88: ...1 1 4 1 Important information regarding the refrigerant used This product contains fluorinated greenhouse gases covered by the Kyoto Protocol Do not vent gases into the atmosphere Refrigerant type R 410A GWP 1 value 1975 1 GWP global warming potential Please fill in with indelible ink the factory refrigerant charge of the product the additional refrigerant amount charged in the field and the total...

Page 89: ...d Outside temperature 0 C DB 43 C DB Indoor temperature 0 C DB 32 C DB Indoor unit connection capacity 50 130 Automatic refrigerant charging procedure 1 Open the liquid and gas side stop valves completely Note that valve A must be closed 2 Turn on the power of the outdoor unit and indoor units Note When an indoor unit is connected to the refrigerant system and the indoor unit is turned off automat...

Page 90: ... and gas side stop valves may be closed Note If you want to repeat the automatic refrigerant charging operation from step 4 1 fully open the liquid and gas side stop valves and press the BS1 MODE button once 4 3 When the led indication becomes as shown in the table below in about 15 to 30 minutes after start of operation open valve A at once to start charging of the refrigerant Immediately after s...

Page 91: ... any remaining pressure after the machine is stopped The outdoor fan may keep rotating a little bit more but this does not indicate a malfunction Case 1 Charging complete Charging of the refrigerant is complete Press BS1 MODE button once and go to step 5 Case 2 Recharging operation Press BS1 MODE button once and perform automatic refrigerant charging again starting from Step 4 1 Case 3 Charging in...

Page 92: ...label attached to the unit 2 After the vacuum drying is finished open valve A and charge the additional refrigerant in its liquid state through the service port on the liquid stop valve taking into account following instructions Turn on the power of the outdoor unit and indoor units Check that gas and liquid stop valves are closed Stop the compressor and charge the specified weight of refrigerant ...

Page 93: ...igerant in its liquid state through the service port of the liquid line stop valve 5 While the unit is at a standstill and under setting mode 2 refer to Checks before initial start up Setting mode 2 on page 108 set the required function A additional refrigerant charging operation to ON ON Then operation starts The blinking H2P led indicates test operation and the remote controller indicates TEST t...

Page 94: ...57 Press and hold the TEST OPERATION button BS4 on outdoor unit PC board for 5 seconds Set to setting mode 1 H1P led is off refer to Setting mode 1 on page 107 The test operation is started automatically The following judgements are conducted within 15 minutes about 30 minutes at the maximum 2 Check for wrong wiring 2 Check stop valve for not open 2 Check of refrigerant charge 2 Pipe length automa...

Page 95: ... has been finished correctly Recalculate the required amount of refrigerant from the piping length and add an adequate amount of refrigerant F6 Refrigerant overcharge Recalculate the required amount of refrigerant from the piping length and correct the refrigerant charge level by recovering any excessive refrigerant with a refrigerant recovery machine U1 Power supply cables are connected in the re...

Page 96: ...r units can be operated normally When an abnormal noise due to liquid compression by the compressor can be heard stop the unit immediately and turn on the crankcase heater to heat up it sufficiently then start operation again Operate indoor unit one by one to check that the corresponding outdoor unit operates Confirm that the indoor unit discharges cold air or warm air Operate the air direction co...

Page 97: ...n cannot be recognized In this case the unit cannot be run for up to 12 minutes to automatically set the address indoor outdoor address etc Status Outdoor unit Test lamp H2P Blinks Can also be set during operation described above Indoor unit If ON button is pushed during operation described above the UH malfunction indicator blinks Returns to normal when automatic setting is complete Outdoor unit ...

Page 98: ...Outdoor Unit PC Board Layout 86 Test Operation 2 Outdoor Unit PC Board Layout A3P A2P A4P X2M X1M U 4 5 6ML5XPQ U 4 5 6ML5DPQ X2M X1M A2P A1P Urban Multi ML5 Mini UM Heat Pump ...

Page 99: ...um of four seconds and the FIELD SET MODE is entered 2 Select the desired MODE NO with the button 3 During group control when setting by each indoor unit mode No 20 22 and 23 have been selected push the button and select the INDOOR UNIT NO to be set This operation is unnecessary when setting by group 4 Push the upper button and select FIRST CODE NO 5 Push the lower button and select the SECOND COD...

Page 100: ...ings are SET 7 Push the button to return to the NORMAL MODE Example If during group setting and the time to clean the air filter is set to FILTER CONTAMINATION HEAVY SET MODE NO to 10 FIRST CODE NO to 0 and SECOND CODE NO to 02 Notes 1 Setting is carried out in the group mode however if the mode number inside the parentheses is selected indoor units can also be set individually 2 The SECOND CODE n...

Page 101: ...de 2 Select the desired mode No with the button 3 Pushing the button select the first code No 4 Pushing the button select the second code No 5 Push the timer button and check the settings 6 Push the button to return to the normal mode Example When setting the filter sign time to Filter Dirtiness High in all group unit setting set the Mode No to 10 Mode setting No to 0 and setting position No to 02...

Page 102: ... No 20 22 and 23 have been selected push the BS8 BUTTON unit No and select the INDOOR UNIT NO to be set This operation is unnecessary when setting by group 5 Push the BS9 BUTTON set A and select FIRST CODE NO 6 Push the BS10 BUTTON set B and select SECOND CODE NO 7 Push the BS7 BUTTON set cancel once and the present settings are SET 8 Push the BS6 BUTTON field set to return to the NORMAL MODE 9 Ex...

Page 103: ... display 4 11 21 7 Airflow adjustment OFF Completion of airflow adjustment Start of airflow adjustment 5 12 22 0 Optional accessories output selection field selection of output for adaptor for wiring Indoor unit turned ON by thermostat Operation output Malfunction output 6 1 ON OFF input from outside Set when ON OFF is to be controlled from outside Forced OFF ON OFF control External protection dev...

Page 104: ...ng unit Roundflow 4 way blow 2 way blow Corner type UM4 YM3 LM3 DM3 NM3 FM3 EM3 TM3 KM3 PM3 RM3 Filter sign Ultra long life filter sign Remote controller thermostat sensor Set fan speed when thermostat OFF Air flow adjustment Ceiling height Air flow direction Air flow direction adjustment Down flow operation Air flow direction adjustment range Field set fan speed selection Discharge air temp Cooli...

Page 105: ...cond Code No is set to 03 room temperature is controlled by the remote controller thermistor 4 Filter Cleaning Displayed or Not Displayed Whether or not to display Filter Cleaning after operation of certain duration can be selected Filter Specs Setting Standard Long Life Ultra Long Life Filter Contamination Light 200 hrs 2 500 hrs 10 000 hrs Contamination Heavy 100 hrs 1 250 hrs 5 000 hrs Mode No ...

Page 106: ...onal accessory 7 External ON OFF input This input is used for ON OFF operation and Protection device input from the outside The input is performed from the T1 T1 terminal of the operation terminal block X1A in the electric component box Setting Table Mode No First Code No Second Code No Airflow adjustment 11 21 7 01 OFF 02 Completion of airflow adjustment 03 Start of airflow adjustment Mode No Fir...

Page 107: ...etting the units may start automatically after power failure reset or the main power supply turned on again return to the same operation condition as that of before power failure For the above reasons when the unit is set enabling to utilize Auto restart function after power failure reset utmost care should be paid for the occurrence of the following situation 12 Air Flow When Cooling Thermostat i...

Page 108: ...ard 02 Wall mounted type Slight increase 03 Wall mounted type Normal increase Mode No First code No Second code No Ceiling height m 13 23 0 01 2 7 or less 02 2 7 3 5 Mode No First code No Second code No Setting Ceiling height m 13 23 0 01 Standard All round outlet 2 7 02 High Ceiling 1 2 7 3 03 Higher Ceiling 2 3 3 5 Mode No First code No Second code No Setting Ceiling height m 13 23 0 01 Standard...

Page 109: ...direction setting according to the respective purpose Setting Table Some indoor unit models are not equipped with draft prevention upward function 17 Setting of the Static Pressure Selection for future model use Mode No First Code No Second Code No Setting 13 23 1 01 F 4 direction air flow 02 T 3 direction air flow 03 W 2 direction air flow Mode No First Code No Second Code No Setting 13 23 3 01 D...

Page 110: ...e thermostat is stopped For the purpose of preventing dust on the air filter from falling off 21 Interlocked Operation between Humidifier and Drain Pump This is used to interlock the humidifier with the drain pump When water is drained out of the unit this setting is unnecessary MODE NO FIRST CODE NO SECOND CODE NO External Static Pressure 13 23 06 01 30Pa 1 02 50Pa 03 60Pa 04 70Pa 05 80Pa 06 90Pa...

Page 111: ... individual operation of heat reclaim ventilation using the remote controller central unit when heat reclaim ventilation is built in Switch only when heat reclaim ventilation is built in Mode No First Code No Second Code No Contents 15 25 5 01 02 Individual operation of ventilation Panasonic ...

Page 112: ... about one minute with the display of flashing an interval of ON ON and OFF 2 While in normal mode press and hold the switch for a period of four seconds or more to set the system to Field Setting Mode 3 Select the MODE No 00 with the button 4 Use the button to select the group No for each group Group numbers increase in the order of 1 00 1 01 1 15 2 00 4 15 5 Press to set the selected group No 6 ...

Page 113: ...l mode Group No Setting Example Caution When turning the power supply on the unit may often not accept any operation while 88 is displaying after all indications were displayed once for about 1 minute on the liquid crystal display This is not an operative fault Centoral Remote Controller F1 F2 F1 F2 F1 F2 F1 F2 P1 P2 RC RC RC RC RC F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 ...

Page 114: ...remote controller can be set and displayed by operation modes 0 through 19 ON OFF control impossible by remote controller Used when you want to turn on off by central remote controller only Cannot be turned on off by remote controller OFF control only possible by remote controller Used when you want to turn on by central remote controller only and off by remote controller only Centralized Used whe...

Page 115: ...te controller Controlmode Operation OFF Temperature control Operation mode setting Unified operation individual operation by central remote controller or operation controlled by timer Unified OFF individual stop by central remote controller or timer stop ON OFF control impossible by remote controller Rejection Example Rejection Example Rejection Example Rejection Acceptance 0 Rejection 10 Acceptan...

Page 116: ...minals A B and C on the outdoor X2M Terminal board A B and C Set the cool heat selector switch DS1 1 from OFF which is selected at the factory before shipment to ON Dipswitch Setting item Description No Setting DS1 1 ON Cool Heat change over setting Used to set cool heat change over setting by remote controller equipped with outdoor unit Note 1 OFF Factory set DS1 2 ON Not used Do not change the f...

Page 117: ...ng setting Please Attach the Capacity Setting Adaptor corresponding to Capacity Class ex 112 140 160 in connector X51A See Below Capacity Setting Adaptor Capacity Class 4 112 5 140 6 160 CAPACITY SETTING ADAPTOR for 100 J112 CAPACITY SETTING ADAPTOR for 125 J140 CAPACITY SETTING ADAPTOR for 140 J160 Position of Attaching the Capacity Setting Adaptor RXYSQ4 5 6PA7Y1B RXYSQ4 5 6PA7V1B Note X51A X51A...

Page 118: ...TEST BS5 RESET V2760 Setting mode 1 Monitor mode H1P Push the BS1 MODE button one time Blinking MODE MODE Off H1P Setting mode 2 MODE On H1P Push and hold the BS1 MODE button for 5 seconds Push the BS1 MODE button one time Normal V2761 Using the MODE button the modes can be changed as follows Check item selection Set Contents display Monitor mode Setting mode 1 Initial condition Press BS3 RETURN b...

Page 119: ...utton to set the system to Setting mode 1 Normally Setting mode 1 is set In case of other status push MODE BS1 button one time and set to Setting mode 1 Check the system for each condition through LED displays Refer to information in table on the right Pushing the RETURN BS3 button will bring the system to the initial state of Setting mode 1 7 7 7 7 7 7 9 7 7 7 9 7 7 7 9 7 7 7 7 7 7 8 ON 7 OFF 9 B...

Page 120: ...m outside 26 Night time low noise operation start setting Sets starting time of nighttime low noise operation Night time low noise setting is also required 27 Night time low noise operation end setting Sets ending time of nighttime low noise operation Night time low noise setting is also required 28 Power transistor check mode Check after disconnection of compressor wires Used for trouble diagnosi...

Page 121: ...ry setting 8777787 Low 8777778 9 Tc setting 8 7 7 8 7 7 8 High 8777877 Normal factory setting 8777787 Low 8777778 10 Defrost changeover setting 8 7 7 8 7 8 7 Quick defrost 8777877 Normal factory setting 8777787 Slow defrost 8777778 12 External low noise demand setting 8 7 7 8 8 7 7 External low noise demand NO 8777778 External low noise demand YES 8777787 13 Airnet address 8 7 7 8 8 7 8 Address 0 ...

Page 122: ...oor fan with 4 step or lower 8777877 26 Night time low noise operation start setting 8 7 8 8 7 8 7 About 20 00 8777778 About 22 00 factory setting 8777787 About 24 00 8777877 27 Night time low noise operation end setting 8 7 8 8 7 8 8 About 6 00 8777778 About 7 00 8777787 About 8 00 factory setting 8777877 28 Power transistor check mode 8 7 8 8 8 7 7 OFF 8777778 ON 8777787 29 Capacity precedence s...

Page 123: ... to page 138 139 15 Contents of malfunction 1 cycle before 8 7 7 8 8 8 8 16 Contents of malfunction 2 cycle before 8 7 8 7 7 7 7 20 Contents of retry the latest 8 7 8 7 8 7 7 21 Contents of retry 1 cycle before 8 7 8 7 8 7 8 22 Contents of retry 2 cycle before 8 7 8 7 8 8 7 25 Normal judgment of outdoor units PC board 9 7 8 8 7 7 8 Lower 2 digits 87 Abnormal 78 Normal 77 Unjudgment EMG operation b...

Page 124: ... 16 4 2 22 base 10 number In other words the address is 22 The number of terminal blocks for No 12 and 13 is expressed as an 8 digit binary number which is the combination of four upper and four lower digits for No 12 and 13 respectively 0 128 In d the address for No 12 is 0101 the address for No 13 is 0110 and the combination of the two is 01010110 binary number which translates to 64 16 4 2 86 b...

Page 125: ...VER UNDER CONTROL is flashing in all connected remote controllers Select an indoor unit to be used as the master unit in accordance with the request from the customer It is recommended to select an indoor unit which will be used most often as the master unit Press the operation mode selector button in the remote controller of the indoor unit selected as the master unit In that remote controller CH...

Page 126: ...nit System by Cool Heat Switching Remote Controller It does not matter whether or not there is outdoor outdoor unit wiring Set outdoor unit PC board DS1 1 to OUT factory set Set cool heat switching to IND individual for Setting mode 1 factory set Urban Multi ML5 Mini UM Heat Pump ...

Page 127: ...ing mode 2 select the setting condition i e 20 00 22 00 or 24 00 for set item No 26 Setting of start time of nighttime low noise operation Use the start time as a guide since it is estimated according to outdoor temperatures 3 If necessary while in Setting mode 2 select the setting condition i e 06 00 07 00 or 08 00 for set item No 27 Setting of end time of nighttime low noise operation Use the en...

Page 128: ... 30 Setting of Demand 1 level and then set the setting condition to targeted mode Image of operation Set item Condition Content Demand Mode 1 The compressor operates at approx 60 or less of rating Mode 2 The compressor operates at approx 70 or less of rating Mode 3 The compressor operates at approx 80 or less of rating V3082 The power consumption set with Demand 1 level setting When the Normal dem...

Page 129: ...tting 1 push and hold the BS1 MODE button for more than 5 seconds Setting mode 2 is entered and H1P lights d Push the BS2 SET button several times and match the LED display with the Setting No you want e Push the BS3 RETURN button one time and the present setting content is displayed Push the BS2 SET button several times and match the LED display with the setting content as shown on next page you ...

Page 130: ...low noise start setting z z z PM 8 00 z z z z z 9 PM 10 00 Factory setting z z z z 9 z PM 0 00 z z z 9 z z 27 Night time low noise end setting z z AM 6 00 z z z z z 9 AM 7 00 z z z z 9 z AM 8 00 Factory setting z z z 9 z z 29 Capacity precedence setting z z Low noise precedence Factory setting z z z z z 9 Capacity precedence z z z z 9 z 30 Demand setting 1 z z 60 of rated power consumption z z z z...

Page 131: ...tus set to ON the refrigerant additional charging operation A in set mode 2 H1P Turn on g The operation is automatically started The LED indicator H2P flickers and Test run and Under centralized control are displayed in the remote controller h After charging the specified quantity of refrigerant press the RETURN button BS3 to stop the operation The operation is automatically stopped within 30 minu...

Page 132: ...ming mode to ON The respective expansion valve of indoor and outdoor units are fully opened TEST OPERATION and UNDER CENTRALIZED CONTROL are displayed on the remote controller and the indoor outdoor unit operation is prohibited After setting do not cancel Setting Mode 2 until completion of refrigerant recovery operation d Collect the refrigerant using a refrigerant recovery unit See the operation ...

Page 133: ...ouble in the period of installation at site the system is provided with a test operation mode enabling check for incorrect wiring stop valve left in closed coming out or misplacing with suction pipe thermistor or discharge pipe thermistor and judgment of piping length refrigerant overcharging and learning for the minimum opening degree of electronic expansion valve Unit stopping Press the TEST but...

Page 134: ...Field Setting 122 Test Operation Urban Multi ML5 Mini UM Heat Pump ...

Page 135: ...n Between Indoor unit PC Board and Fan PC Board 154 3 11 C4 Indoor Unit Malfunction of Thermistor R2T for Heat Exchanger 156 3 12 C5 Indoor Unit Malfunction of Thermistor R3T for Gas Pipes 157 3 13 C6 Indoor Unit Failure of Combination Between Indoor unit PC Board and Fan PC Board 158 3 14 C9 Indoor Unit Malfunction of Thermistor R1T for Suction Air 159 3 15 CA Indoor Unit Malfunction of Thermisto...

Page 136: ... 3 45 U5 Malfunction of Transmission between Remote Controller and Indoor Unit 196 3 46 U8 Malfunction of Transmission between Main and Sub Remote Controllers 197 3 47 U9 Malfunction of Transmission between Indoor and Outdoor Units in the Same System 198 3 48 UA Excessive Number of Indoor Units 200 3 49 UC Address Duplication of Central Remote Controller 201 3 50 UE Malfunction of Transmission bet...

Page 137: ...oo many persons staying in a room In cooling Too many heat sources e g OA equipment located in a room 4 The system does not operate The system stops and immediately restarts operation If the OPERATION lamp on the remote controller turns ON the system will be normal These symptoms indicate that the system is controlled so as not to put unreasonable loads on the system Normal operation The system wi...

Page 138: ...operation so that no one gets cold air Furthermore if fan operation mode is selected when other indoor unit is in heating operation the system will be brought to fan LL operation The fan LL operation is also enabled while in oil return mode in cooling operation Normal operation 9 The airflow direction is not reproduced according to the setting The airflow direction is not corresponding to that dis...

Page 139: ...ompressor changes the operating frequency Normal operation 12 Dust comes out from the system Dust comes out from the system when it restarts after the stop for an extended period of time Dust which has deposited on the inside of indoor unit is blown out from the system Normal operation 13 Odors come out from the system In operation Odors of room cigarettes or else adsorbed to the inside of indoor ...

Page 140: ...han 4 seconds Press Inspection Test Operation button once Press Inspection Test Operation button once Or after 30 minutes After 10 seconds Press Inspection Test Operation button once Press Inspection Test Operation button once Indoor unit settings can be made Filter sign time Air flow direction Others Following codes can be checked Malfunction codes Indoor model code Outdoor model code Service dat...

Page 141: ...n code and malfunction contents Note 1 Pressing the INSPECTION TEST button will blink the check indication 2 While in check mode pressing and holding the ON OFF button for a period of five seconds or more will clear the failure history indication shown above In this case on the codes display the malfunction code will blink twice and then change to 00 Normal the Unit No will change to 0 and the ope...

Page 142: ... operations 1 short beep Conduct steps 3 and 4 Continue the operation in step 4 until a buzzer remains ON The continuous buzzer indicates that the malfunction code is confirmed Continuous beep No abnormality 3 Press the MODE selector button The left 0 upper digit indication of the malfunction code flashes 4 Malfunction code upper digit diagnosis Press the UP or DOWN button and change the malfuncti...

Page 143: ...Troubleshooting by Remote Controller Troubleshooting 131 The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed Panasonic ...

Page 144: ...pection Inspection mode Push the button Inspection test operation Push the button Inspection test operation Push the button Inspection test operation Push the button Inspection test operation Push the button 0 L 0 Indoor unit model code display 0 7 1 F C J Outdoor unit model code display A A 1 Test operation Test operation mode Capacity code Indoor unit system code Indoor unit type code Progressio...

Page 145: ...ontrol only Select the indoor unit No to be set with the time mode For wireless remote controller button 3 Make the settings required for each mode Modes 41 44 45 In case of Mode 44 45 push button to be able to change setting before setting work LCD code blinks For details refer to the table in next page 4 Define the setting contents Modes 44 45 Define by pushing the timer button After defining LC...

Page 146: ...unit When you want to search for the unit No By selecting the unit No with the button you can turn the fan of each indoor unit on forced ON individually 44 Individual setting Set the fan speed and air flow direction by each unit Select the unit No with the time mode button Set the fan speed with the button Set the air flow direction with the button 45 Unit No transfer Transfer unit No Select the u...

Page 147: ...and display of malfunctioning unit No let you know the contents and location of the malfunction When there is a stop due to malfunction the contents of the malfunction given below can be diagnosed by a combination of operation lamp INSPECTION display of the liquid crystal display and display of malfunction code It also lets you know the unit No during group control Operation lamp ON OFF button Dis...

Page 148: ...it E1 9 PC board defect 163 E3 9 Actuation of high pressure switch 164 E4 9 Actuation of low pressure sensor 166 E5 9 Compressor motor lock 168 E6 9 Standard compressor lock or over current E7 9 Malfunction of outdoor unit fan motor 169 E9 9 Malfunction of moving part of electronic expansion valve Y1E Y3E 170 F3 9 Abnormal discharge pipe temperature 172 F6 9 Refrigerant overcharged 173 H3 8 Failur...

Page 149: ...same system 198 UA 9 Excessive number of indoor units 200 UC 8 Address duplication of central remote controller 201 UE 9 Malfunction of transmission between central remote controller and indoor unit 202 UF 9 System is not set yet 204 UH 9 Malfunction of system refrigerant system address undefined 205 Central Remote Controller and Schedule Timer UE 9 Malfunction of transmission between centralized ...

Page 150: ...lock Malfunction of electronic expansion valve EV1 E9 EV3 Faulty sensor of outdoor air temperature Faulty Ta sensor short H9 Abnormal discharge pipe temperature Abnormal Td F3 Abnormal heat exchanger temperature Refrigerant over charge F6 Faulty sensor of discharge pipe temperature Faulty Tdi sensor short J3 Faulty sensor of suction pipe temperature Faulty Ts1 sensor short J5 Faulty Ts2 sensor sho...

Page 151: ...9 7 7 9 9 J3 9 7 9 9 7 9 7 7 9 9 9 7 7 7 7 9 7 7 1 J5 9 7 9 7 9 9 7 7 7 7 9 7 7 9 7 7 7 7 9 7 9 J6 9 7 9 9 7 9 7 7 7 7 9 7 7 J7 9 7 9 9 9 9 7 7 7 7 9 7 7 J9 9 9 7 7 9 9 7 7 7 7 9 7 7 JA 9 9 7 9 7 9 7 7 7 7 9 7 7 JC 9 9 9 7 7 9 7 7 7 7 9 7 7 L1 9 7 9 9 9 9 7 7 7 9 9 7 7 7 7 9 7 7 7 7 9 7 7 7 9 9 7 7 7 7 9 7 7 7 9 9 7 7 7 9 9 7 7 7 7 9 7 7 9 7 9 7 7 7 9 9 7 7 7 7 9 7 7 9 9 9 7 7 7 9 9 7 7 7 7 9 7 9 ...

Page 152: ...Malfunction code Open phase Power supply imbalance Imbalance of inverter power supply voltage P1 Faulty temperature sensor of inverter radiation fin Faulty thermistor of inverter fin P4 Refrigerant shortage Refrigerant shortage alarm U0 Abnormal power supply voltage Insufficient Inverter voltage U2 Faulty charge of capacitor in main inverter circuit Malfunction due to SP PAM overvoltage Malfunctio...

Page 153: ...7 7 9 9 U2 9 7 7 9 7 9 7 7 7 7 9 7 7 1 9 7 7 7 7 7 9 9 7 7 7 7 9 7 7 9 7 9 7 7 7 7 9 7 7 7 9 U3 9 7 7 9 9 9 7 7 7 7 9 7 7 9 9 9 7 7 7 7 9 7 9 9 9 U4 9 7 9 7 7 9 7 7 7 7 9 7 7 9 9 9 7 7 7 7 9 7 9 9 9 U9 9 9 7 7 9 9 7 7 7 7 9 7 7 9 9 UA 9 9 7 9 7 9 7 7 7 7 9 7 7 9 9 9 7 7 7 7 9 7 9 9 9 9 7 7 7 7 9 9 7 9 9 9 7 7 7 9 9 7 7 9 9 9 7 7 9 7 9 7 9 9 9 UH 9 9 7 9 9 9 7 7 7 7 9 7 7 9 9 UF 9 9 9 9 9 9 7 7 7 7...

Page 154: ...mproper field set Defect of indoor unit PC board Troubleshooting V2776 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Indoor unit PC board replacement Actuation of external protection device Change the second code No to 01 or 02 External protection device is connected to terminals T1 and T2 of the indoor unit terminal block ON OFF in...

Page 155: ...ctly received from the E PROM E PROM Type of nonvolatile memory Maintains memory contents even when the power supply is turned off Supposed Causes Defect of indoor unit PC board Troubleshooting Turn power supply OFF then power ON again Does the system return to normal YES Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred External factor...

Page 156: ...ption KM3 Option Method of Malfunction Detection By float switch OFF detection Malfunction Decision Conditions When rise of water level is not a condition and the float switch goes OFF Supposed Causes 220 240V power supply is not provided Defect of float switch or short circuit connector Defect of drain pump Drain clogging upward slope etc Defect of indoor unit PC board Loose connection of connect...

Page 157: ...d Loose connection of connector NO NO NO YES YES NO NO YES NO YES NO NO The float switch is connected to X8A or X15A of the indoor unit PC board NO The drain pump works when the power supply is reset for the indoor unit The drain pump is connected to X25A or terminals Y1 and Y2 of the indoor unit PC board The voltage of terminals Y1 and Y2 or X25A is 220 240 V within 5minutes of resetting the powe...

Page 158: ... the fan is maximum Supposed Causes Fan motor lock Disconnected or faulty wiring between fan motor and PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Connect the wiring and turn on again Fix the wiring and turn on again YES NO NO NO YES YES Replace the indoor unit PC board Replace the fan motor Is the wiring ...

Page 159: ...lizes ON OFF of the limit switch when the motor turns Malfunction Decision Conditions When ON OFF of the microswitch for positioning cannot be reversed even though the swing flap motor is energized for a specified amount of time about 30 seconds Supposed Causes Defect of swing motor Defect of connection cable power supply and limit switch Defect of air flow direction adjusting flap cam Defect of i...

Page 160: ... YES NO YES NO YES YES NO Indoor unit is a model equipped with a swing flap function The swing motor works when the power supply is turned off and then back on When the air flow direction flap s cam mechanism is disconnected from the swing motor operation is normal when turned on again The connecting cable has no continuity After turning the swing flap ON and then stopping with the remote controll...

Page 161: ...on defect on signal line Wiring defect Instantaneous blackout others Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Check the condition of the power source Check if power supply voltage is 220V 240V 10 Check if there is power open phase or faulty wiring Check if power supply voltage side unbalance is within 6V A8 Reoc...

Page 162: ...ution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred After connecting turn the power supply off and then back on Replace the moving part of the electronic expansion valve YES YES NO NO Replace the connecting cable If you turn the power supply off and turn on again and it still does not help replace the indoor unit PC board NO YES The electro...

Page 163: ...ansion valve Discount the electronic expansion valve from the PC board and check the continuity between the connector pins Normal Continuity No continuity Pin No 1 White 2 Yellow 3 Orange 4 Blue 5 Red 6 Brown 1 White Approx 300Ω Approx 150Ω 2 Yellow Approx 300Ω Approx 150Ω 3 Orange Approx 150Ω 4 Blue Approx 150Ω 5 Red 6 Brown Panasonic ...

Page 164: ...rom ON to OFF while the compressor is in non operation Supposed Causes Humidifier unit optional accessory leaking Defect of drain pipe upward slope etc Defect of indoor unit PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Defect of indoor unit PC board Modify the drain piping YES NO NO Field drain piping has a...

Page 165: ...acity code is not contained in the PC board s memory and the capacity setting adaptor is not connected 2 When a capacity that doesn t exist for that unit is set Supposed Causes You have forgotten to install the capacity setting adaptor Defect of indoor unit PC board Troubleshooting V2783 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred...

Page 166: ... Check the condition of transmission between indoor PC board A1P and PC board for fan A2P using computer Malfunction Decision Conditions When normal transmission is not conducted for certain duration Supposed Causes Connection defect of the connecter between indoor PC board A1P and PC board for fan A2P Malfunction of indoor PC board A1P Malfunction of PC board for fan A2P External factor such as i...

Page 167: ...t X70A back to original condition Determination 01 Normal Other than 01 Transmission defect on indoor PC board Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Confirm the condition of transmission on indoor PC board using local installation mode 2 C1 Malfunction breaks out again YES Replace PC board for fan A2P Connect it and operate ...

Page 168: ...e the unit is running Supposed Causes Defect of thermistor R2T for liquid pipe Defect of indoor unit PC board Troubleshooting Refer to thermistor resistance temperature characteristics table on P251 V2784 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the indoor unit PC board Connect the thermistor and turn on again NO NO Rep...

Page 169: ... the unit is running Supposed Causes Defect of indoor unit thermistor R3T for gas pipe Defect of indoor unit PC board Troubleshooting Refer to thermistor resistance temperature characteristics table on P251 V2785 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the indoor unit PC board Connect the thermistor and turn on again N...

Page 170: ...ible causes are Malfunction of PC board for fan A2P Connection defect of capacity setting adapter Setting mistake on site Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred NO Replace it with correct PC board for fan A2P NO NO Install correct capacity setting adaptor After establishing transmission for indoor and outdoor ...

Page 171: ...or shorted while the unit is running Supposed Causes Defect of indoor unit thermistor R1T for air inlet Defect of indoor unit PC board Troubleshooting Refer to thermistor resistance temperature characteristics table on P251 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the indoor unit PC board Connect the thermistor and turn...

Page 172: ... shorted while the unit is running Supposed Causes Defect of indoor unit thermistor for air outlet Defect of indoor unit PC board Troubleshooting Refer to thermistor resistance temperature characteristics table on P251 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the indoor unit PC board Connect the thermistor and turn on a...

Page 173: ...ay be occurred YES NO YES NO Remove the humidity sensor from the indoor PC board and insert it again It is normal Poor connector contact Replace the humidity sensor PC board ASS Y A2P 3 It is believed that external factors noise or else other than failure caused the malfunction 1 To delete the record the ON OFF button of the remote controller must be pushed and held for 5 seconds in the check mode...

Page 174: ...r shorted while the unit is running Supposed Causes Defect of remote controller thermistor Defect of remote controller PC board Troubleshooting Note In case of remote controller thermistor malfunction unit is still operable by suction air thermistor on indoor unit Refer to thermistor resistance temperature characteristics table on P251 Turn power supply OFF then power ON again Is CJ displayed on t...

Page 175: ...rectly received from the E PROM E PROM Type of nonvolatile memory Maintains memory contents even when the power supply is turned off Supposed Causes Defect of outdoor unit PC board A1P Troubleshooting Turn off the power once and turn on again Return to normal YES Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred External factor other th...

Page 176: ...h pressure protection switch opens Malfunction Decision Conditions Error is generated when the HPS activation count reaches the number specific to the operation mode Reference Operating pressure of high pressure switch Operating pressure 4 0MPa Reset pressure 3 0MPa Supposed Causes Actuation of outdoor unit high pressure switch Defect of High pressure switch Defect of outdoor unit PC board A1P Ins...

Page 177: ...See 2 Replace the main PC board The high pressure sensor is normal and the pressure detected with the PC board is also normal The high pressure has really become high CHECK 1 Refer to information on P 218 remove the causes by which the high pressure has become high 1 Make a comparison between the voltage of the pressure sensor 4 and that read by the pressure gauge As to the voltage of the pressure...

Page 178: ...nction Detection Abnormality is detected by the pressure value with the low pressure sensor Malfunction Decision Conditions Error is generated when the low pressure is dropped under specific pressure Operating pressure 0 07MPa Supposed Causes Abnormal drop of low pressure Lower than 0 07MPa Defect of low pressure sensor Defect of outdoor unit PC board A1P Stop valve is not opened Urban Multi ML5 M...

Page 179: ...y become low Refer to information on P 219 remove the causes by which the low pressure has become low 1 Make a comparison between the voltage of the pressure sensor 4 and that read by the pressure gauge As to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information on P 253 2 Make a comparison between the low pressure ...

Page 180: ...High differential pressure 0 5MPa or more Incorrect UVW wiring Faulty inverter PC board Stop valve is left in closed Troubleshooting Check the installation conditions Is the stop valve open NO Is the UVW wiring normal NO NO NO NO Is high differential pressure starting 0 5MPa or more YES YES YES Check and see whether compressor is short circuited or ground YES YES Are inverter output voltages the s...

Page 181: ...L1 and N on the power supply terminal board X1M fallen within the range of 220 to 240V 10 50 Hz NO YES Can the fan be turned smoothly with hand after disconnect the connector of fan motor Is there any obstacle around the fan YES YES NO Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Has either the fuse F4U on the control PC board A1P ...

Page 182: ...Models U 4 6ML5DPQ U 4 6ML5XPQ Method of Malfunction Detection Check disconnection of connector Check continuity of expansion valve coil Malfunction Decision Conditions Error is generated under no common power supply when the power is on Supposed Causes Defect of moving part of electronic expansion valve Defect of outdoor unit PC board A1P Defect of connecting cable Urban Multi ML5 Mini UM Heat Pu...

Page 183: ...amage may be occurred Return to normal Turn power supply off and turn power supply on again Electronic expansion valve is connected to X21A and X22A of outdoor unit PC board A1P Normal when coil check 1 of the moving part of the electronic expansion valve is checked The connecting cable is short circuited or disconnected Replace the connecting cable Replace outdoor unit PC board A1P NO NO NO NO Re...

Page 184: ...nection of discharge pipe temperature sensor Faulty outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P252 V3068 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Discharge pipe temperature is 120 C or higher when the unit stop by malfunction Pull out the discharge pipe thermistor ...

Page 185: ...rant overcharge Misalignment of the thermistor for heat exchanger Defect of the thermistor for heat exchanger Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P251 V2797 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Are the above thermistor installed on pipes correctly Check the mounting condition ...

Page 186: ... circuit Supposed Causes Defect of thermistor R1T for outdoor air Defect of outdoor unit PC board A1P Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P251 V3070 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Resistance is normal when measured after disconnecting the thermistor R1T from the outdoor ...

Page 187: ...re thermistor is detected Supposed Causes Defect of thermistor R2T for outdoor unit discharge pipe Defect of outdoor unit PC board A1P Troubleshooting Refer to thermistor resistance temperature characteristics table on P252 V3072 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Resistance is normal when measured after disconnecting the...

Page 188: ...Causes Defect of thermistor R3T R5T for outdoor unit suction pipe Defect of outdoor unit PC board A1P Troubleshooting Refer to thermistor resistance temperature characteristics table on P251 V3073 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Resistance is normal when measured after disconnecting the thermistor R3T R5T from the outd...

Page 189: ...etected Supposed Causes Defect of thermistor R6T for outdoor unit heat exchanger Defect of outdoor unit PC board A1P Troubleshooting Refer to thermistor resistance temperature characteristics table on P251 V3074 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Resistance is normal when measured after disconnecting the thermistor R4T fr...

Page 190: ... detected Supposed Causes Defect of thermistor R7T for outdoor unit liquid pipe Defect of outdoor unit PC board A1P Troubleshooting Refer to thermistor resistance temperature characteristics table on P251 V3074 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Resistance is normal when measured after disconnecting the thermistor R4T fro...

Page 191: ...Supposed Causes Faulty subcooling heat exchanger gas pipe thermistor R4T Faulty outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P251 V3075 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the resistance measured after removing the thermistor R4T from outdoor unit PC board nor...

Page 192: ...sor with wrong connection Defect of outdoor unit PC board Troubleshooting 1 Voltage measurement point 2 Refer to Pressure Sensor pressure voltage characteristics table on P253 V2806 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred The relationship between the 1 VH and high pressure is normal see 2 when voltage is measured between X17A ...

Page 193: ...sensor with wrong connection Defect of outdoor unit PC board Troubleshooting 1 Voltage measurement point 2 Refer to Pressure Sensor pressure voltage characteristics table on P253 V2808 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred The relationship between the 1 VL and low pressure is normal see 2 when voltage is measured between X18...

Page 194: ...vercurrent OCP during waveform output When the current sensor malfunctions during synchronized operation In case of IGBT malfunction Supposed Causes Faulty outdoor PC board A1P IPM failure Current sensor failure Failure of IGBT or drive circuit Troubleshooting YES NO Turn OFF the power supply once and then turn it ON again Does it return normally It is believed that external factors noise etc othe...

Page 195: ...Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Faulty heat radiation of power unit Air suction opening blocked Dirty radiator fin High outdoor temperature Continue operation NO YES YES Replace the inverter PC board assy A2P as well YES The radiator fin temperature is supposed to have risen to 84 C or more Properly con...

Page 196: ...ual is displayed when the inverter output voltage is checked by tester V2812 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Compressor inspection Inverter output voltage check Inverter output voltage is not balanced Normal if within 5V Must be measured when frequency is stable Replace the compressor Compressor inspection Inspect acco...

Page 197: ...red Output current check Inverter output voltage check Inverter output voltage is not balanced Normal if within 5V Must be measured when frequency is stable Compressor overload Inspection of the compressor and refrigerant system is required Compressor inspection Inspect according to the diagnosis procedure for odd noises vibration and operating status of the compressor NO Replace the inverter PC b...

Page 198: ...efore connect or disconnect connector or parts damage may be occurred Inverter output voltage check Inverter output voltage is not balanced Normal if within 5V Must be measured when frequency is stable Unsatisfactory pressure equalization Check refrigerant system Compressor inspection Inspect according to the diagnosis procedure for odd noises vibration and operating status of the compressor YES R...

Page 199: ...ion Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Are the connectors of the inverter PC board and the control PC board securely connected Replace the inverter PC board A2P or the control PC board A1P Table 1 Combination of PC boards Connect a connecting wire and then restart operation NO NO Are there any broken wires in the connectors of th...

Page 200: ...n phase Supposed Causes Defect of main circuit capacitor Improper main circuit wiring Defect of outdoor unit PC board A2P Imbalance of phase to phase voltages Open phase Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Have the power supply voltages of three phases fallen within the range of rated voltage 10 Make measur...

Page 201: ...tection Short of gas malfunction is detected by discharge pipe temperature thermistor and low pressure saturation temperature Malfunction Decision Conditions Microcomputer judge and detect if the system is short of refrigerant Malfunction is not decided while the unit operation is continued Supposed Causes Out of gas or refrigerant system clogging incorrect piping Defect of pressure sensor Defect ...

Page 202: ...stem is clogged Requires check of refrigerant system Replace the thermistor Replace the outdoor unit PC board A1P YES YES NO NO Out of gas closing of stop valve or refrigerant system is clogged Requires check of refrigerant system Replace main outdoor unit PC board A1P YES YES Is the low pressure sensor correct Replace the low pressure sensor NO NO Cooling Low pressure is 0 25 MPa or less The volt...

Page 203: ...lfunction Detection Detection of voltage of main circuit capacitor built in the inverter and power supply voltage Malfunction Decision Conditions When the abnormal voltage of main circuit capacitor built in the inverter and abnormal power supply voltage are detected Supposed Causes Power supply insufficient Instantaneous power failure Defect of outdoor unit fan motor Defect of outdoor inverter PC ...

Page 204: ...neous voltage drop YES NO When the compressor is running measure the voltage between and of electrolytic capacitor C C Check No 3 Is the resistance above standard value Is the measured voltage 220 VDC or more S2605 Replace the fan motor NO Check the inverter power transistor 1 Replace the inverter PC board assy A2P Check for the PC board conditions In case of significant failure the PC board may h...

Page 205: ...Malfunction is decided when the unit starts operation without check operation Supposed Causes Check operation is not executed Troubleshooting V3052 Has the check operation performed on Outdoor unit PC board Press the BS4 on PC board on the master outdoor unit for 5 seconds or more to execute check operation Replace the main PC board on the outdoor unit NO YES Caution Be sure to turn off power swit...

Page 206: ...tion Microcomputer checks if transmission between indoor and outdoor units is normal Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Indoor to outdoor outdoor to outdoor transmission wiring F1 F2 disconnection short circuit or wrong wiring Outdoor unit power supply is OFF System address doesn t match Defect of outdoor unit ...

Page 207: ...ified All indoor unit remote controllers of the same refrigerant system display U4 NO Outdoor unit PC board microcomputer monitor HAP blinks NO NO NO Operation ready lamp H2P is blinking Lamp does not go off for 12 minutes or more Is indoor outdoor and outdoor outdoor unit transmission wiring normal YES The fuse F3U on the outdoor unit s PC board is burnt Check No 3 Check for the fan motor connect...

Page 208: ...f remote controller PC board Malfunction of transmission caused by noise Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2823 NO YES YES NO Replace indoor unit PC board Set one remote controller to SUB turn the power supply off once and then back on There is possibility of malfunction caused by noise Check the surroun...

Page 209: ...cified period Supposed Causes Malfunction of transmission between main and sub remote controller Connection between sub remote controllers Defect of remote controller PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2825 SS1 of both remote controllers is set to SUB Set SS1 to MAIN the power supply off once and...

Page 210: ... Models AII indoor unit models Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Malfunction of transmission within or outside of other system Malfunction of electronic expansion valve in indoor unit of other system Defect of PC board of indoor unit in other system Improper connection of transmission wiring between indoor and outdoor unit Urban Multi ML5 Mini UM Heat ...

Page 211: ...re NO NO Refer to failure diagnosis for U4 malfunction code YES YES U9 has been displayed for 2 minutes or more NO Turn on all indoor units Refer to failure diagnosis for A1 malfunction code NO YES The A1 display blinks on the remote controllers of other units within the same refrigerant system Refer to failure diagnosis for UA malfunction code YES The UA display blinks on the remote controllers o...

Page 212: ...ends on the type of outdoor unit Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V3169 The total of indoor units displaying UA and indoor units connected to the same refrigerant system is within connectable number of unit Normal NO NO There are too many indoor units within the same refrigerant system Push and hold the RESET button on ...

Page 213: ...s Address duplication of centralized remote controller Defect of indoor unit PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2828 Replace indoor unit PC board Address duplication of central remote controller The setting must be changed so that the central remote control address is not duplicated YES NO Option...

Page 214: ...ocomputer checks if transmission between indoor unit and centralized remote controller is normal Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Malfunction of transmission between optional controllers for centralized control and indoor unit Connector for setting master controller is disconnected Failure of PC board for cen...

Page 215: ...rrectly Is the master controller s connector for setting master controller disconnected Set the group No correctly Replace indoor unit PC board Fix the wiring correctly Fix the wiring correctly Connect the connector correctly Replace the central PC board Reset power supply simultaneously for all optional controllers for centralized control YES YES NO YES YES YES YES Turn indoor unit s power supply...

Page 216: ...ct of indoor unit PC board Stop valve is left in closed Troubleshooting Note Wiring check operation may not be successful if carried out after the outdoor unit has been off for more than 12 hours or if it is not carried out after running all connected indoor units in the fan mode for at least an hour Caution Be sure to turn off power switch before connect or disconnect connector or parts damage ma...

Page 217: ...ccurred V2831 NO YES YES After fixing incorrect wiring push and hold the RESET button on the master outdoor unit PC board for 5 seconds Normal NO Is electricity being introduce for the first time after installationor after an indoor or outdoor unit PC board has been replaced Is indoor outdoor and outdoor outdoor unit transmission wiring normal YES Normal NO Does a malfunction occur NO Does a UH ma...

Page 218: ...Defect of indoor unit PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the power supply turned on for indoor units displaying malfunction Is transmission wiring disconnected or wired incorrectly Is the transmission wiring with the master controller disconnected or wired incorrectly Is the master controller s...

Page 219: ...M1 PC Board Defect Remote Controller Display M1 Applicable Models Centralized remote controller Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Defect of central remote controller PC board Troubleshooting Replace the central remote controller PC board Panasonic ...

Page 220: ...n wiring disconnected or wired incorrectly The PC board of one of the optional controllers for centralized control is defective Try turning on off using each optional controllers for centralized control and replace the PC board of the one that is unable to control the indoor unit NO NO Fix the wiring correctly YES YES Has a once connected optional controller for centralized control been disconnect...

Page 221: ... Control Remote Controller Display MA Applicable Models Centralized remote controller Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Improper combination of optional controllers for centralized control More than one master controller is connected Defect of PC board of optional controller for centralized control Panasonic ...

Page 222: ...upply for all optional controllers for centralized control simultaneously Arrange so that the connector for setting master control is connected to one controller for centralized control and reset the power supply for all optional controllers for centralized control simultaneously Disconnect the connector for setting master control from the master controller connect to another optional controller f...

Page 223: ...onditions Supposed Causes Address duplication of centralized remote controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Are two or more centralized remote controllers connected Disconnect all centralized remote controllers except one and reset the power supply of the centralized remote controller Reset power sup...

Page 224: ...blinks Applicable Models All models of indoor units Unified ON OFF controller Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Malfunction of transmission between optional controller and indoor unit Connector for setting master controller is disconnected Defect of unified ON OFF controller Defect of indoor unit PC board Malfunction of air conditioner Urban Multi ML5 ...

Page 225: ...er controller disconnected Set the group No correctly Replace indoor unit PC board Fix the wiring correctly Fix the wiring correctly Connect the connector correctly Replace the central PC board Reset power supply for all optional controllers for centralized control simultaneously NO YES NO YES YES NO YES Turn the power supply of the indoor unit on YES NO NO YES NO YES NO Has a once connected indoo...

Page 226: ...N OFF controller Central controller Schedule timer Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Address duplication of central remote controller Improper combination of optional controllers for centralized control Connection of more than one master controller Malfunction of transmission between optional controllers for centralized control Defect of PC board of op...

Page 227: ...r schedule timer NO YES YES NO NO Fix the wiring correctly Set reset switch to normal NO NO YES YES YES Is the power supply turned on for all optional controllers for centralized control Reset power supply simultaneously for all optional controllers for centralized control NO YES Has a once connected optional controller for centralized control been disconnected or itsaddress changed Is the central...

Page 228: ... Arrange so that the connector for setting master control is connected to one controller for centralized control and reset the power supply for all optional controllers for centralized control simultaneously Disconnect the connector for setting master control from the master controller connect to another optional controller for centralized control and simultaneously reset all optional controllers ...

Page 229: ... transmission wiring Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2844 Is the switch for setting each address set correctly Is the transmission wiring disconnected or wired incorrectly Replace the PC board of the unified ON OFF controller Fix the wiring correctly Set by remote controller the central control address...

Page 230: ...e pressure sensor In cooling High suction air temperature of the condenser In heating High suction air temperature of outdoor unit Short circuit High ambient temperature Is the suction air temperature not more than 46 C Is the outdoor temperature not more than 46 C High suction air temperature of indoor unit High ambient temperature Is the suction air temperature not more than 27 C Is the indoor t...

Page 231: ...aporator In heating Low suction air temperature of indoor unit Short circuit Is the suction air temperature not less than 14 C Is the indoor temperature not less than 14 C Low ambient temperature Faulty suction air thermistor of indoor unit Is the connector properly connected Are the thermistor resistance characteristics normal Low suction air temperature of outdoor unit Is the outdoor temperature...

Page 232: ...the fan motor connector on motor side disconnected measure the resistance between each pin then make sure that the resistance is more than the value mentioned in the following table Measurement point Judgment 1 4 1MΩ or more 2 4 100kΩ or more 3 4 100Ω or more 4 7 100kΩ or more 1 White 2 Orange 3 Brown 4 Blue 5 6 7 Red GND Urban Multi ML5 Mini UM Heat Pump ...

Page 233: ...or Unit 227 2 2 Field Wiring 229 2 3 Indoor Unit 231 3 Option List 246 3 1 Option List of Controllers 246 3 2 Option List of Outdoor Unit 248 4 Example of Connection 249 5 Thermistor Resistance Temperature Characteristics 251 6 Pressure Sensor 253 7 Method of Replacing the Inverter s Power Transistors Modules 254 Panasonic ...

Page 234: ...Piping Diagrams 222 Appendix 1 Piping Diagrams 1 1 Outdoor Unit U 4 5 6ML5XPQ 3D057917 Urban Multi ML5 Mini UM Heat Pump ...

Page 235: ...Piping Diagrams Appendix 223 U 4 5 6ML5DPQ 3D052712 Panasonic ...

Page 236: ...expansion valve Y1E Used for gas superheated degree control while in cooling operation or subcooled degree control while in heating operation 2 Suction air temperature thermistor R1T Used for thermostat control 3 Liquid pipe R2T Used for gas superheated degree control while in cooling operation or subcooled degree control while in heating operation 4 Gas pipe R3T Used for gas superheated degree co...

Page 237: ...Piping Diagrams Appendix 225 NM3 Refrigerant pipe connection port diameters 4D043864H mm Model Gas Liquid 20 25 NM3 φ12 7 φ6 4 Panasonic ...

Page 238: ...Piping Diagrams 226 Appendix Urban Multi ML5 Mini UM Heat Pump ...

Page 239: ...Wiring Diagrams Appendix 227 2 Wiring Diagrams 2 1 Outdoor Unit U 4 5 6ML5XPQ 3D059640 Panasonic ...

Page 240: ...Wiring Diagrams 228 Appendix U 4 5 6ML5DPQ 3D05811B Urban Multi ML5 Mini UM Heat Pump ...

Page 241: ...Wiring Diagrams Appendix 229 2 2 Field Wiring U 4 5 6ML5XPQ 3D057919 Panasonic ...

Page 242: ...Wiring Diagrams 230 Appendix U 4 5 6ML5DPQ 3D052597 Urban Multi ML5 Mini UM Heat Pump ...

Page 243: ...Wiring Diagrams Appendix 231 2 3 Indoor Unit S 20 25 32 63LM3HPQ Panasonic ...

Page 244: ...Wiring Diagrams 232 Appendix S 40 50 80 125LM3HPQ Urban Multi ML5 Mini UM Heat Pump ...

Page 245: ...Wiring Diagrams Appendix 233 S 20 25 32 40 50 63 80 100 125UM4JPQ Panasonic ...

Page 246: ...Wiring Diagrams 234 Appendix S 20 25 32 40 50YM3HPQ Urban Multi ML5 Mini UM Heat Pump ...

Page 247: ...Wiring Diagrams Appendix 235 S 25 32 40 63DM3HPS 3D039564C Panasonic ...

Page 248: ...Wiring Diagrams 236 Appendix S 20 25NM3HPQ Urban Multi ML5 Mini UM Heat Pump ...

Page 249: ...Wiring Diagrams Appendix 237 S 20 25 32 40 50 63FM3HPQ Panasonic ...

Page 250: ...Wiring Diagrams 238 Appendix S80 100 125FM3HPQ Urban Multi ML5 Mini UM Heat Pump ...

Page 251: ...N L L1R R2 R3 M X8A C2 A2P Z1F BLK X10A N M1F F2 T1 P2 P1 T2 F1 R4T YLW HAP X3A WHT X15A X16A YLW BLU WIRED REMOTE CONTROLLER OPTIONAL ACCESSORY X1A M1P PNK BLU X1M X2A RED FOR S 50 63 80 100 125EM3HPS FOR S 40EM3HPS PS PS PS X33A X35A X28A Z 1 C A 3 P X1M A2P Z2C L1P X2M A 1 P INDOOR UNIT C1 C2 C3 KPR K1R L1R M1F M1P A1P A2P A3P HAP F1U F3U F2U F4U LIGHT EMITTING DIODE SERVICE MONITOR GREEN A1P A...

Page 252: ...Wiring Diagrams 240 Appendix S 32 63 100TM3JPR 3D039801D Urban Multi ML5 Mini UM Heat Pump ...

Page 253: ...ISPLAY UNIT WIRELESS REMOTE CONTROLLER R3T R1T SS1 WHT N NOTE 8 X15A X35A X18A PNK R2T POWER SUPPLY TRANSMISSION WIRING CENTRAL REMOTE CONTROLLER RED M1S R1T CONNECTOR FOR OPTIONAL PARTS RECEIVER DISPLAY UNIT ATTACHED TO WIRELESS REMOTE CONTROLLER P1 BS1 NOTE 2 SS1 INPUT FROM OUTSIDE RED L YLW NE 5 WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE FORCED OFF OR ON OFF CONTROL OPERATION CAN BE SELECTED ...

Page 254: ...Wiring Diagrams 242 Appendix S 20 25 32 40 50 63PM3HPS S 20 25 32 40 50 63RM3HPS 3D039826D Urban Multi ML5 Mini UM Heat Pump ...

Page 255: ...Wiring Diagrams Appendix 243 Panasonic ...

Page 256: ...Wiring Diagrams 244 Appendix Urban Multi ML5 Mini UM Heat Pump ...

Page 257: ...Wiring Diagrams Appendix 245 Panasonic ...

Page 258: ...r in the indoor unit 2 UM NET Expander Adaptor CZ 109AP11P Up to 1 024 units can be centrally controlled in 64 different groups Wiring restrictions max length 1 000 m total wiring length 2 000 m max number of branches 16 apply to each adaptor No Part name Model No Function 1 Central remote controller CZ 02ESM11P Up to 64 groups of indoor units 128 units can be connected and ON OFF temperature sett...

Page 259: ...Option List Appendix 247 Panasonic ...

Page 260: ...XPQ 4TW26101 Optional accessories U 4ML5XPQ U 5ML5XPQ U 6ML5XPQ U 4ML5DPQ U 5ML5DPQ U 6ML5DPQ Cool Heat Selector CZ 02RD12P Fixing box K JB111A Distributive Piping Refnet header CZ P29HK32Q Refnet joint CZ P20BK32Q Central drain plug K KPJ5F180 Urban Multi ML5 Mini UM Heat Pump ...

Page 261: ...e size is not available stick to the original pipe diameter which may result in a small capacity decrease Gas side U 4 5ML5 Ø15 9 Ø19 1 U 6ML5 Ø19 1 Ø22 2 A Piping between outdoor unit and refrigerant branch kit Match to the size of the connection piping on the outdoor unit Outdoor unit connection piping size B Piping between refrigerant branch kits Use the pipe size from the following table C Pip...

Page 262: ...Example of Connection 250 Appendix Urban Multi ML5 Mini UM Heat Pump ...

Page 263: ...52 6 65 6 53 3 56 49 55 08 53 6 41 6 53 4 53 71 52 38 54 6 65 6 53 5 51 09 49 83 55 6 41 6 53 6 48 61 47 42 56 6 18 6 06 7 46 26 45 14 57 5 95 5 84 8 44 05 42 98 58 5 74 5 43 9 41 95 40 94 59 5 14 5 05 10 39 96 39 01 60 4 96 4 87 11 38 08 37 18 61 4 79 4 70 12 36 30 35 45 62 4 62 4 54 13 34 62 33 81 63 4 46 4 38 14 33 02 32 25 64 4 30 4 23 15 31 50 30 77 65 4 16 4 08 16 30 06 29 37 66 4 01 3 94 17...

Page 264: ...1 7 26 7 16 22 228 05 223 08 72 32 78 32 23 122 7 06 6 97 23 218 24 213 51 73 31 69 31 15 123 6 87 6 78 24 208 90 204 39 74 30 63 30 12 124 6 69 6 59 25 200 00 195 71 75 29 61 29 12 125 6 51 6 42 26 191 53 187 44 76 28 64 28 16 126 6 33 6 25 27 183 46 179 57 77 27 69 27 24 127 6 16 6 08 28 175 77 172 06 78 26 79 26 35 128 6 00 5 92 29 168 44 164 90 79 25 91 25 49 129 5 84 5 76 30 161 45 158 08 80 ...

Page 265: ...ure PL PH Detected Pressure High Side MPa PL Detected Pressure Low Side MPa VH Output Voltage High Side VDC VL Output Voltage Low Side VDC PH 1 38V 0 69 PL 0 57V 0 28 PH High pressure MPa VL Low pressure MPa V Voltage V Output Voltage VH VL Detected Pressure V3053 Panasonic ...

Page 266: ...nductors mounted on the inverter PC board by the use of a multiple tester Items to be prepared 1 Multiple tester Prepare the digital type of multiple tester with diode check function Preparation 1 Turn OFF the power supply Then after a lapse of 10 minutes or more make measurement of resistance 1 To make measurement disconnect all connectors and terminals Inverter PC board U 4 5 6ML5XPQ W V U C C U...

Page 267: ...Method of Replacing the Inverter s Power Transistors Modules Appendix 255 Inverter PC board U 4 5 6ML5DPQ C C W U V Panasonic ...

Page 268: ... following abnormalities are also doubted besides the PC board abnormality 1 Faulty compressor ground fault ground leakage 1 Faulty fan motor ground leakage Tester terminal Criterion Remark C U Not less than 0 3V including It may take time to determine the voltage due to capacitor charge or else V W U C Not less than 0 3V including V W U C 0 3 to 0 7V including V W C U 0 3 to 0 7V including V W Ur...

Page 269: ...utions for New Refrigerant R 410A 257 Part 9 Precautions for New Refrigerant R 410A 1 Precautions for New Refrigerant R 410A 258 1 1 Outline 258 1 2 Refrigerant Cylinders 260 1 3 Service Tools 261 Panasonic ...

Page 270: ...ant mixture of two or more refrigerants having similar boiling points 3 The design pressure is different at each product Please refer to the installation manual for each product Reference 1 MPa 10 19716 kgf cm2 HFC units Units using new refrigerants HCFC units Refrigerant name R 407C R 410A R 22 Composing substances Non azeotropic mixture of HFC32 HFC125 and HFC134a 1 Quasi azeotropic mixture of H...

Page 271: ...gerant R 410A 259 Thermodynamic characteristic of R 410A Temperature Steam pressure kPa Liquid Vapor Density kg m3 Liquid Vapor Specific heat at constant pressure kJ kgK Liquid Vapor Specific enthalpy kJ kg Liquid Vapor Specific entropy kJ KgK Liquid Vapor Panasonic ...

Page 272: ... vessels Although those vessels are durable and strong careless handling can cause damage that can lead to unexpected accidents Do not drop vessels let them fall apply impact or roll them on the ground 3 Storage Although R 410A is not flammable it must be stored in a well ventilated cool and dark place in the same way as any other high pressure gases It should also be noted that high pressure vess...

Page 273: ...ers for R 410A and R 407C Charging cylinder 2Weighting instrument used for HFCs Gas detector 2The same tool can be used for HFCs Vacuum pump pump with reverse flow preventive function 2To use existing pump for HFCs vacuum pump adaptor must be installed Weighting instrument Charge mouthpiece 2Seal material is different between R 22 and HFCs 2Thread specification is different between R 410A and othe...

Page 274: ...n of 0 to 0 5mm was provided for flaring For R 410A air conditioners perform pipe flaring with a pipe extension margin of 1 0 to 1 5mm For clutch type only Conventional tool with pipe extension margin adjustment can be used Flare gauge Nominal size 1 4 3 8 1 2 5 8 3 4 Tube O D Do 6 35 9 52 12 70 15 88 19 05 Class 2 R 410A 9 1 13 2 16 6 19 7 24 0 Class 1 Conventional 9 0 13 0 16 2 19 4 23 3 0 0 4 U...

Page 275: ...m degree of vacuum 50 l min 50Hz Select a vacuum pump which is able to keep 60 l min 60Hz the vacuum degree of the system in excess of 2 Suction port UNF7 16 20 1 4 Flare 100 7 kPa 5 torr 755 mmHg UNF1 2 20 5 16 Flare with adapter Differences 2 Equipped with function to prevent reverse oil flow 2 Previous vacuum pump can be used by installing adapter Nominal size Class 1 Class 2 Previous 1 2 24 26...

Page 276: ...oil Air compal Specifications 2 Contains synthetic oil therefore it can be used for piping work of every refrigerant cycle 2 Offers high rust resistance and stability over long period of time Differences 2 Can be used for R 410A and R 22 units 6 Gauge manifold for R 410A Specifications 2 High pressure gauge 0 1 to 5 3 MPa 76 cmHg to 53 kg cm2 2 Low pressure gauge 0 1 to 3 8 MPa 76 cmHg to 38 kg cm...

Page 277: ... without hand operate valve that prevents refrigerant from outflow Differences 2 Pressure proof hose 2 Change in service port diameter 2 Use of nylon coated material for HFC resistance 8 Charging cylinder Specifications 2 Use weigher for refrigerant charge listed below to charge directly from refrigerant cylinder Differences 2 The cylinder can not be used for mixed refrigerant since mixing ratio i...

Page 278: ...harging 2 A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories Differences 2 Measurement is based on weight to prevent change of mixing ratio during charging 10 Charge mouthpiece Specifications 2 For R 410A 1 4 5 16 2min 2 5min 2 Material is changed from CR to H NBR Differences 2 Change of thread specification on hose connection side For the R 410A ...

Page 279: ...ain Pump Control 65 E E1 163 E3 164 E4 166 E5 168 E7 169 E9 170 Electrical and Functional Parts Outdoor Unit 30 Electronic Expansion Valve PI Control 51 Error of External Protection Device 142 Excessive Number of Indoor Units 200 F F3 172 F6 173 Failure of Combination Between Indoor unit PC Board and Fan PC Board 158 Failure of Transmission Between Indoor unit PC Board and Fan PC Board 154 Fan Mot...

Page 280: ...ame System 198 Malfunction of Transmission between Indoor Units and Outdoor Units 194 Malfunction of Transmission between Inverter and Control PC Board 187 Malfunction of Transmission between Main and Sub Remote Controllers 197 Malfunction of Transmission between Optional Controllers for Centralized Control 208 Malfunction of Transmission between Remote Controller and Indoor Unit 196 MC 211 Method...

Page 281: ...r M1F lock overload 146 freeze prevention 70 functional parts layout 44 H high pressure protection control 60 high voltage of capacitor in main inverter circuit 188 I improper combination of optional controllers for centralized control 209 inverter compressor abnormal 184 inverter current abnormal 185 inverter protection control 63 inverter start up error 186 L louver control for preventing ceilin...

Page 282: ...32 outdoor unit pc board layout 86 P pc board defect 143 163 207 piping diagrams 222 power supply insufficient or instantaneous failure 191 pressure sensor 253 R refrigerant circuit 40 refrigerant overcharged 173 remote controller self diagnosis function 135 remote controller service mode 133 S self diagnosis by wired remote controller 129 self diagnosis by wireless remote controller 130 setting o...

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