Panasonic Mini UM M Service Manual Download Page 131

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Troubleshooting by Indication on the Remote Controller

Mini UM S/M

122

Troubleshooting

4.16

“

”

Outdoor Unit: Actuation of Low Pressure Switch

Remote
Controller
Display

Applicable
Models

AII outdoor unit models

Method of
Malfunction
Detection

Malfunction
Decision
Conditions

Error is generated when the low pressure is dropped under specific pressure.

Supposed
Causes

Abnormal drop of low pressure

Defect of low pressure sensor

Defect of outdoor unit PC board

Stop valve is not opened.

Troubleshooting

∗

1: Voltage measurement point

∗

2: Refer to pressure sensor, pressure / voltage characteristics table on P192.

(V2791)

Caution

Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.

Is the malfunction

due to abnormal drop of low

pressure?

Measure

the voltage (VL)

of X45A pin No. (2) - (3)

of outdoor PC board (A1P).

∗

Is the relationship

between low

voltage and VL

normal?

∗

Out of gas, refrigerant system
clogging, wiring and piping wrong
connection, stop valve closed,
electronic expantion valve fully
close malfunction.

Replace the low pressure sensor.

Replace outdoor unit PC board
A1P.

YES

Is stop valve opened?

Open stop valve.

YES

Outdoor unit PC board A1P

*2 Measure voltage (DC) within this space.

GND

(V2792)

Red

Low pressure sensor

White

Black

+5V

X45A

(blue)

Microcomputer
A/D input

Mini UM.book Page 122 Monday, January 24, 2005 11:32 AM

Summary of Contents for Mini UM M

Page 1: ...ideas for life R 410A Heat Pump 50Hz Mini UM S M R 410A Heat Pump 50Hz Mini UM S M URBAN MULTI SERVICE MANUAL ...

Page 2: ...Refrigerant Circuit 27 1 Refrigerant Circuit 28 1 1 U 4 5 6ML3DPQ 28 2 Functional Parts Layout 30 2 1 U 4 5 6ML3DPQ 30 Part 5 Function 31 1 Operation Mode 32 2 Basic Control 33 2 1 Normal Operation 33 2 2 Compressor PI Control 34 2 3 Electronic Expansion Valve PI Control 35 2 4 Cooling Operation Fan Control 36 3 Special Control 37 3 1 Startup Control 37 3 2 Oil Return Operation 38 3 3 Defrosting O...

Page 3: ...ction Test Operation Button 97 1 5 Remote Controller Service Mode 98 2 List of Malfunction Code 100 3 Malfunction Code Indication by Outdoor Unit PCB 102 4 Troubleshooting by Indication on the Remote Controller 104 4 1 A0 Indoor Unit Error of External Protection Device 104 4 2 A1 Indoor Unit PC Board Defect 105 4 3 A3 Indoor Unit Malfunction of Drain Level Control System 33H 106 4 4 A6 Indoor Unit...

Page 4: ...n Temperature Rise Sensor 142 4 34 PJ Outdoor Unit Faulty Combination of Inverter and Fan Driver 143 4 35 UO Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure 144 4 36 U2 Power Supply Insufficient or Instantaneous Failure 145 4 37 U3 Check Operation not Executed 147 4 38 U4 Malfunction of Transmission between Indoor Units and Outdoor Units 148 4 39 U5 Malfunction ...

Page 5: ...efect 174 7 3 M8 Malfunction of Transmission between Optional Controllers for Centralized Control 175 7 4 MA Improper Combination of Optional Controllers for Centralized Control 176 7 5 MC Address Duplication Improper Setting 178 8 Check 179 Part 8 Appendix 181 1 Piping Diagrams 182 1 1 Outdoor Unit 182 1 2 Indoor Unit 183 2 Wiring Diagrams for Reference 185 2 1 Outdoor Unit 185 2 2 Indoor Unit 18...

Page 6: ... plug socket 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 dischargi...

Page 7: ...the applicable model and 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 streng...

Page 8: ...e valve 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 immedi...

Page 9: ...cal shock Be sure to measure 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...

Page 10: ...Mini UM S M 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 ...

Page 11: ...00 YM3 20 25 32 40 50 Ceilingmounted cassette type Multi flow UM3 20 25 32 40 50 63 80 125 H Ceilingmounted cassette corner DM3 25 32 40 63 H Ceilingmounted built in type L S P NM3 20 25 H Ceilingmounted built in type M S P FM3 20 25 32 40 50 63 80 100 125 Ceilingmounted duct type EM3 40 50 63 80 100 125 H Ceiling suspended type TM3 32 63 100 Wall mounted type KM3 20 25 32 40 50 63 Floor standing ...

Page 12: ...uspended type S 32TM3 S 63TM3 S 100TM3 Ceiling mounted cassette type Multi flow S 20UM3 S 25UM3 S 32UM3 S 40UM3 S 50UM3 S 63UM3 S 80UM3 S 125UM3 Wall mounted type S 20KM3 S 25KM3 S 32KM3 S 40KM3 S 50KM3 S 63KM3 Ceiling mounted cassette corner type S 25DM3 S 32DM3 S 40DM3 S 63DM3 Floor standing type S 20PM3 S 25PM3 S 32PM3 S 40PM3 S 50PM3 S 63PM3 Ceiling mounted built in type S 20NM3 S 25NM3 Concea...

Page 13: ...g Mounted Cassette Type Double Flow LM3 20 25 32 40 50 63 80 125 Ceiling Mounted Cassette Type Multi Flow 600 600 YM3 20 25 32 40 50 Ceiling Mounted Cassette Type Multi Flow UM3 20 25 32 40 50 63 80 125 Ceiling Mounted Cassette Corner Type DM3 25 32 40 63 Ceiling Mounted Built in Type NM3 20 25 Ceiling Mounted Built in Type FM3 20 25 32 40 50 63 80 100 125 Ceiling Mounted Duct Type EM3 40 50 63 80...

Page 14: ...Mini UM S M Specifications 5 Part 2 Specifications 1 Specifications 6 1 1 Outdoor Units 6 1 2 Indoor Units 8 ...

Page 15: ...Direct on line Direct on line Fan Type Propeller Fan Propeller Fan Motor Output W 70 2 70 2 Air Flow Rate m3 min 106 106 Drive Direct Drive Direct Drive Connecting Pipes Liquid Pipe mm φ9 5 Flare Connection φ9 5 Flare Connection Gas Pipe mm φ15 9 Flare Connection φ15 9 Flare Connection Machine Weight kg 127 127 Safety Devices High Pressure Switch Fan Driver Overload Protector Inverter Overload Pro...

Page 16: ...ns r p m 6 480 Motor Output Number of Units kW 3 5 1 Starting Method Direct on line Fan Type Propeller Fan Motor Output W 70 2 Air Flow Rate m3 min 106 Drive Direct Drive Connecting Pipes Liquid Pipe mm φ9 5 Flare Connection Gas Pipe mm φ19 1 Brazing Connection Machine Weight kg 127 Safety Devices High Pressure Switch Fan Driver Overload Protector Inverter Overload Protector Fusible Plugs Fuse Def...

Page 17: ...or Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Piping Connections Liquid Pipes mm φ6 4 Flare Connection φ6 4 Flare Connection φ6 4 Flare Connection Gas Pipes mm φ12 7 Flare Connection φ12 7 Flare Co...

Page 18: ...min 11 8 14 10 cfm 388 282 494 353 Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Piping Connections Liquid Pipes mm φ6 4 Flare Connection φ6 4 Flare Connection Gas Pipes mm...

Page 19: ...nnection φ6 4 Flare Connection φ6 4 Flare Connection φ9 5 Flare Connection Gas Pipes mm φ12 7 Flare Connection φ12 7 Flare Connection φ12 7 Flare Connection φ15 9 Flare Connection Drain Pipe mm VP25 External Dia 32 Internal Dia 25 VP25 External Dia 32 Internal Dia 25 VP25 External Dia 32 Internal Dia 25 VP25 External Dia 32 Internal Dia 25 Machine Weight kg 31 31 31 34 5 Sound Level H L 220V dBA 3...

Page 20: ...Model D11 2D3AB1VE D11 2D3AB1VE D11 2D3AB1VE Type Sirocco Fan Sirocco Fan Sirocco Fan Motor Output Number of Units W 100 1 100 1 100 1 Air Flow Rate H L m3 min 14 11 5 14 11 5 14 11 5 cfm 494 406 494 406 494 406 External Static Pressure Pa 157 157 118 108 4 157 157 118 108 4 157 157 118 108 4 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and...

Page 21: ...319 Fan Model D11 2D3AA1VE 2D11 2D3AG1VE 2D11 2D3AF1VE Type Sirocco Fan Sirocco Fan Sirocco Fan Motor Output Number of Units W 160 1 270 1 430 1 Air Flow Rate H L m3 min 19 5 16 29 23 36 29 cfm 688 565 1 024 812 1 271 1 024 External Static Pressure Pa 157 160 108 98 4 157 172 98 98 4 191 245 152 172 4 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Co...

Page 22: ...83 688 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Wool Glass Wool Glass Wool Air Filter Resin Net with Mold Resistant Resin Net with Mold Resistant Resin Net with Mold Resistant ...

Page 23: ...cfm 265 159 282 177 318 194 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethyl...

Page 24: ... 43 1 Air Flow Rate H L m3 min 12 9 15 12 19 14 cfm 424 318 530 424 671 494 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed ...

Page 25: ... 8 6 cfm 247 212 247 212 282 212 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Urethane Foam Glass Fiber Urethane Foam Glass Fiber Urethane Foam Air Filter Resin Net with Mold...

Page 26: ...4 11 16 12 cfm 388 300 494 388 565 424 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Urethane Foam Glass Fiber Urethane Foam Glass Fiber Urethane Foam Air Filter Resin Net wit...

Page 27: ...7 6 7 6 8 6 cfm 247 212 247 212 282 212 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Urethane Foam Glass Fiber Urethane Foam Glass Fiber Urethane Foam Air Filter Resin Net wi...

Page 28: ... 11 8 5 14 11 16 12 cfm 388 300 494 388 565 424 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Urethane Foam Glass Fiber Urethane Foam Glass Fiber Urethane Foam Air Filter Resi...

Page 29: ...Specifications Mini UM S M 20 Specifications ...

Page 30: ...Mini UM S M List of Electrical and Functional Parts 21 Part 3 List of Electrical and Functional Parts 1 List of Electrical and Functional Parts 22 1 1 Outdoor Unit 22 1 2 Indoor Unit 23 ...

Page 31: ...rol A1P X28A Heating 0pls Solenoid valve Hot gas Y1S TEV1620DQ2 A1P X2A Solenoid valve Receiver gas charge Y2S TEV1620DQ2 A1P X3A 4 way valve Y3S VT40100 A1P X5A Pressure related parts Pressure switch INV S1PH ACB 4UB11 ON 3 8 0 0 1MPa OFF 2 85 0 15MPa A2P X60A Fusible plug FPGH 3D 70 75 C Pressure sensor HP S1NPH PS8051A 0 4 15MPa A1P X46A Pressure sensor LP S1NPL PS8051A 0 05 1 7MPa A1P X45A The...

Page 32: ...0 20kΩ 25 C 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 S 32DM3 S 40DM3 S 63DM3 Remote Controller Wired Remote Controller CZ 02RT11P Option Wireless Remote Controller CZ 01RWD12P Motors Fan Motor M1F AC 220 240V 50Hz 1φ15W 4P 1φ20W 4P 1φ45W 4P Thermal Fuse 146 C Ther...

Page 33: ...or Heat Exchanger R2T ST8602A 4 φ6 L800 20kΩ 25 C Others Float switch S1L FS 0211 Fuse F1U 250V 5A φ5 2 250V 10A φ5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark S 32TM3 S 63TM3 S 100TM3 Remote Controller Wired Remote Controller CZ 02RT11P Option Wireless Controller CZ 01RWT12P Motors Fan Motor M1F AC 220 240V 220V 50Hz 60Hz 1φ63W 1φ130W Thermal protector 130 C OFF 80 C ON Capacitor f...

Page 34: ...oller CZ 01RWF12P Motors Fan Motor M1F AC 220 240V 50Hz 1φ15W 1φ25W 1φ35W Thermal protector 135 C OFF 120 C ON Capacitor for Fan Motor C1R 1 0µF 400V 0 5µF 400V 1 0µF 400V 1 5µF 400V 2 0µF 400V Thermistors Thermistor Suction Air R1T ST8601 6 φ4 L1250 20kΩ 25 C Thermistor for Heat Exchanger High Temp R3T ST8605 9 φ8 L2500 20kΩ 25 C Thermistor for Heat Exchanger R2T ST8602A 9 φ6 L2500 20kΩ 25 C Othe...

Page 35: ...List of Electrical and Functional Parts Mini UM S M 26 List of Electrical and Functional Parts ...

Page 36: ...Mini UM S M Refrigerant Circuit 27 Part 4 Refrigerant Circuit 1 Refrigerant Circuit 28 1 1 U 4 5 6ML3DPQ 28 2 Functional Parts Layout 30 2 1 U 4 5 6ML3DPQ 30 ...

Page 37: ...ressure when a malfunction occurs this switch is activated at high pressure of 3 8 MPa or more to stop the compressor operation S Fusible plug In order to prevent the increase of pressure when abnormal heating is caused by fire or others the fusible part of the plug is molten at a temperature of 70 to 75 C to release the pressure into the atmosphere T Pressure regulating valve 1 Receiver to discha...

Page 38: ...pansion valve Electronic Filter Filter Heat exchanger Service port 1 2 3 4 O J S F E D A P T M N G D C 3D043711 5 Four way valve High pressure sensor Pressure regulating valve Oil separator Capillary tube Solenoid valve Solenoid valve Low pressure sensor High pressure switch Check valve Check valve Check valve Check valve Electronic expansion valve Double pipe heat exchanger Heat exchanger pipe ...

Page 39: ...lectronic expansion valve Solenoid valve lead wire Y1S Solenoid valve lead wire Connector color WHITE Y1S Solenoid valve E1HC Crankcase heater lead wire Four way valve coil Y3S R3T S1NPH High pressure sensor Connector color RED S1NPL Low pressure sensor Connector color BLUE Discharge pipe thermistor lead wire Connector color BLUE Low voltage Connector color GRAY High voltage Connector color WHITE ...

Page 40: ...tandby 42 3 6 Stopping Operation 43 3 7 Pressure Equalization Prior to Startup 44 4 Protection Control 45 4 1 High Pressure Protection Control 45 4 2 Low Pressure Protection Control 46 4 3 Discharge Pipe Protection Control 47 4 4 Inverter Protection Control 48 5 Other Control 49 5 1 Demand Operation 49 5 2 Heating Operation Prohibition 49 6 Outline of Control Indoor Unit 50 6 1 Drain Pump Control ...

Page 41: ...ntrol Compressor PI control Electronic expansion valve PI control Protection control Cooling or heating operation Oil return IN conditions are met Defrost IN conditions are met Operation mode change Indoor unit stop or thermostat OFF Indoor unit stop or thermostat OFF Restart standby Compressor stop Malfunction Standby Pump down residual operation Malfunction Standby In the event indoor unit stops...

Page 42: ...s Subcooling electronic expansion valve EV2 PI control Hot gas bypass valve SVP OFF This valve turns on with low pressure protection control Receiver gas discharging valve SVG OFF 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 frequency upper...

Page 43: ...arget Te value Varies depending on Te setting operating frequency etc L M Normal factory setting H 3 6 9 Controls compressor capacity to adjust Tc to achieve target value TcS Tc High pressure equivalent saturation temperature C Tc setting TcS Target Tc value Varies depending on Tc setting operating frequency etc L M Normal factory setting H 43 46 49 U 4 5 6ML3DPQ STEP INV 1 52Hz 2 57Hz 3 62Hz 4 68...

Page 44: ...nding on the discharge pipe superheated degree of inverter compressor Subcooling Electronic Expansion Valve EV2 Control Makes PI control of the electronic expansion valve Y2E 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 Ts Te SH Evaporator outlet superheated degree C Ts Suction pipe temperature detected by ther...

Page 45: ... Pc 1 8MPa Pc 2 4MPa Pc 1 8MPa Pc 2 4MPa Pc 1 8MPa Pc 2 4MPa Pc 1 8MPa Pc 2 4MPa Pc 1 8MPa Pc 2 4MPa Pc 1 8MPa Pc 2 3MPa Pc 1 8MPa Pc 2 1MPa STEP0 Pc 1 8MPa Pc 1 9MPa M1F M2F STEP3 STEP4 STEP5 STEP6 STEP7 STEP8 STEP2 STEP1 STEP0 Cooling Fan Steps M1F M2F STEP8 STEP1 Heating There are 2 steps in heating operation Reference Pc HP pressure sensor detection value V3172 0 rpm 0 rpm 580 rpm 545 rpm 250 ...

Page 46: ...Initial fan speed is set to STEP 0 1 step increase with Pc 2 1 MPa 1 step decrease with Pc 1 8 MPa Four way valve OFF Main electronic expansion valve EV1 1400 pls Subcooling electronic expansion valve EV2 0 pls Hot gas bypass valve SVP ON Receiver gas discharging valve SVG OFF Ending conditions 230 sec Pc Pe 0 4 MPa 45 sec Actuator Operation Remarks Compressor Differential pressure control Compres...

Page 47: ...c Te and the compressor load Outdoor unit actuator Oil return preparation operation Oil return operation Post oil return operation Compressor Upper limit control 124 Hz 124 Hz Outdoor unit fan Fan control Fan control Fan control Four way valve OFF OFF OFF Main electronic expansion valve EV1 1400 pls 1400 pls 1400 pls Subcooling electronic expansion valve EV2 SH control 0 pls 0 pls Hot gas bypass v...

Page 48: ...te to 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 124 Hz 2 step increase from 52 Hz to Pc Pe 0 4 MPa time Outdoor unit fan STEP8 OFF STEP8 Four way valve ON OFF ON Main electronic expansion valve EV1 SH control 1400 pls 200 400 pls Subcooling electronic expansion ...

Page 49: ...ost the compressor stops 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 52 Hz 177 Hz 2 step increase from 52 Hz 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 1400 pls 200 400 pls Subcooling e...

Page 50: ... down Residual Operation in Heating Operation Actuator Master unit operation Compressor 124 Hz Outdoor unit fan Fan control Four way valve OFF Main electronic expansion valve EV1 2000 pls Subcooling electronic expansion valve EV2 0 pls Hot gas bypass valve SVP OFF Receiver gas discharging valve SVG ON OFF Ending conditions 30 sec Pe 0 5 MPa Td 110 C or Actuator Master unit operation Compressor 124...

Page 51: ...pressure 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 EV2 0 pls Hot gas bypass valve SVP ON Receiver gas discharging valve SVG OFF Ending conditions 5 min ...

Page 52: ...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 EV2 0 pls Hot gas bypass valve SVP OFF Receiver gas discharging valve SVG OFF Ending conditions Indoor unit thermostat is turned ON ...

Page 53: ...n inverters turn on electricity and capacitors are charged Actuator Operation Remarks Compressor OFF Outdoor unit fan Cooling OFF Heating Ta 26 C STEP8 Ta 26 C OFF Four way valve Keep former condition Main electronic expansion valve EV1 0 pls Subcooling electronic expansion valve EV2 0 pls Hot gas bypass valve SVP ON Receiver gas discharging valve SVG OFF Ending conditions 3 min Pc Pe 0 2 MPa or ...

Page 54: ... step up from current compressor frequency INV upper limit frequency 1 step up from current compressor frequency Pc HP pressure sensor detection value INV upper limit frequency 1 step down from current compressor frequency When occurring 3 times within 30 minutes HPS is activated without high pressure standby thus outputting the malfunction code E3 V3173 Every 5 min High pressure standby During oi...

Page 55: ...e limited Low pressure standby When occurring 3 times within 60 min the malfunction code E4 is output Pe 0 07MPa V3176 SVP OFF SVP ON Pe 0 25MPa INV upper limit frequency More than 124Hz Pe 0 16MPa Upper limit 1 step up from current compressor frequency Upper limit 124Hz Upper limit 52Hz Low pressure not limited Low pressure limited Pe 0 19MPa every 20 sec Pe 0 17MPa Pe 0 13MPa Pe 0 13MPa Pe 0 16M...

Page 56: ... not limited Keep the current step INV frequency 1 step down from current compressor frequency lower limit 52Hz INV upper limit frequency 1 step up from current compressor frequency Exclusion of the right conditions Fix INV frequency 52Hz HTdi Tp Value of INV compressor discharge pipe temperature Tdi compensated with outdoor air temperature Value of compressor port temperature calculated by Tc and...

Page 57: ...unction code L8 is output When occurring 3 times within 30 min the malfunction code L9 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 23 8A continues for 3 min Status quo Without conditions V3178 Not limited Limited Tfin 93 C Tfin 93 C Tfin 99 C Fin tem...

Page 58: ... input by external control adaptor is required Demand 1 setting Demand 2 setting Other protection control functions have precedence over the above operation 5 2 Heating Operation Prohibition Heating operation is prohibited above 30 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 set...

Page 59: ...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 During Cooling OFF by Thermostat Thermostat running Float switch Drain pump OFF ON ON ON Malfunction residual Remote controller A3 flashing malfunction stop OFF OFF 5 min 5 sec 1 Residual operation 5 min VL008 Thermostat running Float switch Drain pump OFF ON ON...

Page 60: ...r 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 Thermostat running Float switch Humidifier Drain pump OFF ON ON ON ON Reset Remote controller A3 flashing malfunction stop OFF OFF OFF 5 min 5 sec 5 min VL010 Remote controller display Float switch Drain pump ON ON Remote controller A3 flashi...

Page 61: ... factory set position is standard position 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 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 into 5 positions P1 4 Separated into 5 ...

Page 62: ...f the user when the suction temperature is near the preset temperature Ex When 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 VRF system is off and that temperature changes even when the thermostat sensor is off Body thermostat sensor is used for...

Page 63: ...e 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 VRF 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 25 C A C Remote controller thermostat sensor is used for temperatures from 25 C to 28 C C ...

Page 64: ... 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 for total of 10 min ...

Page 65: ...rection LL 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 thermost...

Page 66: ... Test Operation 58 1 1 Procedure and Outline 58 1 2 Operation When Power is Turned On 61 2 Outdoor Unit PC Board Layout 62 3 Field Setting 63 3 1 Field Setting from Remote Controller 63 3 2 Field Setting from Outdoor Unit 75 3 3 Detail of Setting Mode 81 ...

Page 67: ...than 200 230V circuit 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 ...

Page 68: ...E4 F3 The shutoff valves in the outdoor unit remain closed Open the shutoff valve on both the gas side and liquid side The operation mode on the remote controller was changed before the check run Set the operating mode on all indoor unit remote controllers to cooling The refrigerant is insufficient Check whether additional refrigerant charge has been finished correctly Calculate again the required...

Page 69: ... that the indoor outdoor 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 Opera...

Page 70: ...the addition 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 Ou...

Page 71: ...onitor H7P H1P H2P H3P H4P H5P H6P 4 Local setting switch Connection terminal for transmission use A B C F1 F2 F1 F2 Switch cool heat Outdoor Outdoor Indoor Outdoor 1 Microcomputer normal monitor LED Green This monitor blinks while in normal operation and turns on or off when a malfunction occurs 2 Set mode display LED Orange LEDs display mode according to the setting 3 Mode setting switch Used to...

Page 72: ...onds or more and operation then enters the field set mode 2 Select the desired mode No with the button 3 During group control and you want to set by each individual indoor unit when mode No 20 21 22 23 25 has been selected push the time mode button and select the indoor unit No to be set Note This operation is not required when setting as a group 4 Push the button and select the first code No 5 Pu...

Page 73: ... 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 MODE NO FIELD SET MODE SECO...

Page 74: ...he mode No 00 with BS2 BUTTON temperature setting and BS3 BUTTON temperature setting 4 Select the group No with BS9 BUTTON set A and BS10 BUTTON set B Group Nos increase in the order of 1 00 1 01 1 15 2 00 4 15 However the unified ON OFF controller displays only group No set within the range of control 5 Press BS7 BUTTON set cancel to set group No 6 Press BS6 BUTTON field set to return to the NORM...

Page 75: ...on Set when filter sign is not to be displayed Display No display 12 22 0 Optional accessories output selection field selection of output for adaptor for wiring Indoor unit turned ON by thermostat Operationoutput Malfunction output 1 ON OFF input from outside Set when ON OFF is to be controlled from outside Forced OFF ON OFF control 2 Thermostat differential changeover Set when remote sensor is to...

Page 76: ...ght 1 Air flow direction 3 Air flow direction adjustment Down flow operation 4 Air flow direction adjustment range 5 Field set fan speed selection Mode No Setting Switch No Setting Contents Ceiling mounted duct type Ceiling suspended type Wall mounted type Floor standing type Concealed Floor standing type EM3 TM3 KM3 PM3 RM3 10 20 0 Filter sign 1 Ultra long life filter sign 2 Remote controller the...

Page 77: ... off However for the air conditioners with the setting 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...

Page 78: ...ounted type Standard 02 Wall mounted type Slight increase 03 Wall mounted type Normal increase Mode No First code No Secon d code No Setting Ceiling height 4 way Outlets 3 way Outlets 2 way Outlets 13 23 0 01 Standard N Lower than 2 7 m Lower than 3 0 m Lower than 3 5 m 02 High Ceiling H Lower than 3 0 m Lower than 3 3 m Lower than 3 8 m 03 Higher Ceiling S Lower than 3 5 m Lower than 3 5 m Mode N...

Page 79: ...charge Grille for Field Air Flow Rate Switching In the case of UM3 When the optional parts high performance filter oil guard filter etc is installed sets to change fan speed for securing air flow rate Follow the instruction manual for the optional parts to enter the setting numbers S2537 Mode No First Code No Second Code No Setting 13 23 4 01 Upward Draft prevention 02 Standard 03 Downward Ceiling...

Page 80: ... by the switch for setting each address 5 Push the timer button to define the selected group No 6 Push the button to return to the normal mode Even if not using a remote controller connect the remote controller when setting the group No set the group No for centralized control and disconnect after making the setting Set the group No after turning on the power supply for the central remote controll...

Page 81: ...isplayed once for about 1 minute on the liquid crystal display This is not an operative fault P1 P2 P1 P2 P1 P2 P1 P2 Central remote controller Unified ON OFF controller Indoor unit HRV No remote controller Remote controller centralized control automatic address Remote controller centralized control automatic address 1 00 1 01 1 03 1 04 1 02 P1 P2 P1 P2 P1 P2 P1 P2 V3170 Group No for centralized c...

Page 82: ...ation mode setting by 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 onl...

Page 83: ...peration 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 Acceptance Example Acceptance Example 1 Example Rejection 11 OFF cont...

Page 84: ...ease carry out the following setting The spare parts P C B is different from the P C B on factory shipment above in a way of setting When you exchange to the spare parts P C B make sure that you change setting referring the following table DIP Switch Detail 1 2 3 4 1 2 3 4 DS1 DS2 ON OFF ON OFF DS No DS1 1 Item Contents Not used Do not change the factory settings The following setting is performed...

Page 85: ... 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 Push the BS1 MODE button one time Using the MODE button the modes can be changed as follows Check item selection Set Contents display Monitor mode Setting item selection Set Setting mode 2 Set Select mode with BS2 SET button in each selection step Press BS1 MODE b...

Page 86: ...m LED display example H1P H2P H3P H4P H5P H6P H7P Normal 7 7 8 7 7 7 7 Malfunction 7 8 8 7 7 7 7 Preparing Test run 7 9 8 7 7 7 7 8 ON 7 OFF 9 Blinking a Setting mode 1 Normally Setting mode 1 is set In case of other status push MODE button BS1 one time and set to ìSetting mode 1 The current state is displayed ...

Page 87: ...time low noise setting is also required 29 Capacity precedence setting If the capacity control is required the low noise control is automatically released by this setting during carrying out low noise operation and nighttime low noise operation 30 Demand setting 1 Changes target value of power consumption when demand control 1 is input 32 Normal demand setting Normally enables demand control 1 wit...

Page 88: ...7 8 7 8 7 Quick defrost 8777877 Normal 8777787 Slow defrost 8777778 21 Refrigerant recovery mode setting 8 7 8 7 8 7 8 Refrigerant recovery OFF 8777778 Refrigerant recovery ON 8777787 22 Night time low noise setting 8 7 8 7 8 8 7 OFF 8777777 Level 1 8777778 Level 2 8777787 Level 3 8777788 26 Night time low noise operation start setting 8 7 8 8 7 8 7 About 20 00 8777778 About 22 00 8777787 About 24...

Page 89: ...7 Tc setting H 9 7 7 7 7 7 8 M 9 7 7 7 7 7 9 L 9 7 7 7 7 7 7 c Monitor mode Selection of setting item Confirmation on setting contents To enter the monitor mode push the MODE button BS1 when in Setting mode 1 Push the SET button BS2 and set the LED display to a setting item Push the RETURN button BS3 to display different data of set items Push the RETURN button BS3 and switches to the initial stat...

Page 90: ...eat switching remote controller Set Cool Heat Separately for Each Outdoor System by Indoor Unit Remote Controller It does not matter whether or not there is outdoor outdoor unit wiring Set outdoor unit PC board DS1 1 to indoor factory set Set cool heat switching to individual for Setting mode 1 factory set MODE H1P H2P H3P H4P H5P H6P H7P IND SLAVE L N O P DEMAND MASTER C H SELECT C H SELECT C H S...

Page 91: ...s outdoor outdoor unit wiring Set outdoor unit PC board DS1 1 to outdoor factory set Set cool heat switching to individual for Setting mode 1 factory set MODE H1P H2P H3P H4P H5P H6P H7P IND SLAVE L N O P DEMAND MASTER C H SELECT C H SELECT C H SELECT R C Indoor unit C H select remote controller Indoor unit V3164 I O O O Dip SW DS1 1 O A B C F1 F1 F2 F1 F2 F2 F1 F2 I TEST MALFNC ...

Page 92: ...her the low noise instructions are neglected to switch to normal operation Set by Setting Mode 2 B When the low noise operation is carried out automatically at night The outdoor unit external control adaptor is not required 1 Set Night time low noise setting on the outdoor unit PCB Set by Setting Mode 2 Lower noise operation can be carried out by Mode 2 than by Mode 1 and by Mode 3 than by Mode 2 ...

Page 93: ... is AM 8 00 AM 8 00 AM 7 00 If capacity precedence is set in Capacity precedence setting the fan speed will be increased according to the load of air conditioning when load is heavier Operation sound during night time low noise mode is instructed can be set with Night time low noise level setting Factory setting is OFF V3079 Operation sound Rated operation sound Operation sound of mode 1 Operation...

Page 94: ...the External low noise Demand YES Set by Setting Mode 2 Set the Demand 1 level setting on the outdoor unit PCB as the need arises During the demand level 1 instruction the power consumption can be saved to 80 70 or 60 of the rated value respectively B When the continuous demand operation is carried out Use of the outdoor unit external control adaptor is not required Set the Continuous demand setti...

Page 95: ...s set to ON OFF has been set at factory the power consumption can be set with the Demand 1 level setting 70 of rated power consumption has been set at factory Power consumption Rated power consumption 80 of rated power consumption 70 of rated power consumption 60 of rated power consumption 40 of rated power consumption Forced thermostat OFF Fan operation V3083 The power consumption set with Demand...

Page 96: ...ode 2 H1P on In setting 1 push and hold the BS1 MODE button for more than 5 seconds Setting mode 2 is entered and H1P lights Push the BS2 SET button several times and match the LED display with the Setting No you want 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 bel...

Page 97: ...once and reset Setting Mode 2 Setting No Setting contents Setting No indication Setting No indication Setting contents Setting contents indication Initial setting H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P 22 Night time low noise setting OFF Factory setting Mode 1 Mode 2 Mode 3 25 External low noise setting Mode 1 Mode 2 Factory setting Mode 3 26 Night time...

Page 98: ...f Vacuuming operation Use the vacuum pump to perform vacuuming operation Press Mode button BS1 once and reset Setting Mode 2 3 3 5 Check Operation To prevent any trouble 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 and judgment of piping length Unit stopping Press the TEST button for 5 seconds ...

Page 99: ...Field Setting Mini UM S M 90 Test Operation ...

Page 100: ...3T for Gas Pipes 116 4 11 C9 Indoor Unit Malfunction of Thermistor R1T for Suction Air 117 4 12 CA Indoor Unit Malfunction of Thermistor for Discharge Air 118 4 13 CJ Indoor Unit Malfunction of Thermostat Sensor in Remote Controller 119 4 14 E1 Outdoor Unit PC Board Defect 120 4 15 E3 Outdoor Unit Actuation of High Pressure Switch 121 4 16 E4 Outdoor Unit Actuation of Low Pressure Switch 122 4 17 ...

Page 101: ... Controller and Indoor Unit 156 4 45 UF Refrigerant System not Set Incompatible Wiring Piping 158 4 46 UH Malfunction of System Refrigerant System Address Undefined 159 5 Troubleshooting by Indication on the Centralized Remote Controller 160 5 1 UE Malfunction of Transmission between Centralized Remote Controller and Indoor Unit 160 5 2 M1 PC Board Defect 161 5 3 M8 Malfunction of Transmission bet...

Page 102: ...troller displays trial operation Indoor unit settings can be made Filter sign time Air flow direction Others Service data can be obtained Malfunciton code history Temperature data of various sections Service settings can be made Forced fan ON Air flow direction volume setting Depress button for more than 4 seconds Depress button for more than 4 seconds Press button once Or after 30 minutes You can...

Page 103: ...tion the remote controller s operation LED blinks and malfunction code is displayed Even if stop operation is carried out malfunction contents are displayed when the inspection mode is entered The malfunction code enables you to tell what kind of malfunction caused operation to stop Inspection display Inspection test buttom Displays the malfunction code SL025 ...

Page 104: ...nduct all of the following 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 butto...

Page 105: ...Troubleshooting by Remote Controller Mini UM S M 96 Troubleshooting The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed UP button DOWN button SE007 ...

Page 106: ...0 600 Display A C E F H J L P L U 6 Indoor unit type code Model KM3 LM3 DM3 UM3 TM3 FM3 PM3 EM3 RM3 NM3 YM3 Type Mini UM R410A Display A 8 A Outdoor model code Model U ML3 Unit Malfunction code Inspection Normal display No display 0 L 0 Malfunction code blinks when a malfunction occurs Unit Malfunction code Inspection Inspection mode Push the button Inspection test operation Push the button Inspec...

Page 107: ... For group control 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 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 LCD c...

Page 108: ... the fan ON by each 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 ...

Page 109: ... 9 9 Standard compressor lock or over current E7 9 9 9 Malfunction of outdoor unit fan motor 124 E9 9 9 9 Malfunction of moving part of electronic expansion valve Y1E 3E 126 F3 9 9 9 Abnormal discharge pipe temperature 128 F6 9 9 9 Refrigerant overcharged H3 8 7 9 Malfunction of High pressure switch H4 9 9 9 Actuation of Low pressure switch H7 9 9 9 Abnormal outdoor fan motor signal H9 9 9 9 Malfu...

Page 110: ...r unit in the same system 152 UA 9 9 9 Excessive number of indoor units etc 154 UC 8 8 8 Address duplication of central remote controller 155 UE 9 9 9 Malfunction of transmission between central remote controller and indoor unit 156 UF 9 9 9 Refrigerant system not set incompatible wiring piping 158 UH 9 9 9 Malfunction of system refrigerant system address undefined 159 Central ized Control and Sch...

Page 111: ... inverter and fan driver Gas shortage alarm Insufficient inverter voltage Inverter open phase phase T Charging error of capacitor in inverter main circuit Over voltage Over current Over voltage Hard detection I O transmission error Indoor unit system malfunction in other system or other unit of own system Abnormal connection with excessive number of indoor units Conflict of refrigerant type in ind...

Page 112: ...8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 9 9 7 7 7 7 9 9 9 7 9 9 9 7 7 7 9 7 7 7 7 9 9 9 9 7 9 9 9 7 7 7 7 9 9 7 7 9 9 7 7 9 7 7 9 9 ...

Page 113: ...nal protection device Improper 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 YES NO NO YES ON OFF input from outside mode No 12 first code No 1 has been set to ...

Page 114: ...ot be correctly received from the E2PROM E2PROM 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 Exte...

Page 115: ...indoor unit models 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 conne...

Page 116: ... of indoor unit PC board Loose connection of connector NO NO NO YES YES NO NO YES NO YES NO NO NO Provide 220 240V power supply YES NO Is power supply 220 240V provided The float switch is connected to X8A of the indoor unit PC board A short circuit connector is connected to X8A The float switch contact is forming a short circuit continuity check with X8A disconnected Becomes normal when X8A of th...

Page 117: ... when output voltage to 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 f...

Page 118: ... Detection Utilizes 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 c...

Page 119: ...lace indoor unit PC board NO NO YES NO YES NO YES YES NO Replace swing motor V2780 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 The connector is connected to X9A of the indoor unit PC board The limit switch functions normally The connecting cable is short circuited or disconnected After turning the swing flap ...

Page 120: ...roubleshooting V2781 Caution 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 b...

Page 121: ...ctronic expansion 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 ...

Page 122: ... the float switch changes from 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 ...

Page 123: ...hen the capacity 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 ...

Page 124: ...nnected or shorted while 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 P190 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 ...

Page 125: ...orted while 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 P190 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...

Page 126: ...sconnected 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 P190 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 thermist...

Page 127: ...becomes disconnected or 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 P190 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 t...

Page 128: ... becomes disconnected or 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 P190 Turn power supply OFF then power ON aga...

Page 129: ...not be correctly received from the E2PROM E2PROM 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 facto...

Page 130: ... of outdoor unit PC board Instantaneous power failure Faulty high pressure sensor Troubleshooting 1 Actuation of high pressure switch HPS Is the outdoor unit heat exchanger dirty Defect of outdoor fan Is the refrigerant over charged Faulty high pressure sensor Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Operation is normal when tu...

Page 131: ...ressure voltage characteristics table on P192 V2791 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the malfunction due to abnormal drop of low pressure Measure the voltage VL of X45A pin No 2 3 of outdoor PC board A1P 1 Is the relationship between low voltage and VL normal 2 Out of gas refrigerant system clogging wiring and piping...

Page 132: ...s detected Supposed Causes Compressor lock High differential pressure 0 5MPa or more Incorrect UVWN wiring Faulty inverter PC board Stop valve is left in closed Troubleshooting Check the installation conditions Is the stop valve open NO Is the UVWN 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 grou...

Page 133: ... are met When malfunction is generated 4 times the system shuts down Supposed Causes Malfunction of fan motor The harness connector between fan motor and PC board is left in disconnected or faulty connector Fan does not run due to foreign matters tangled Clearing condition Operate for 5 minutes normal Troubleshooting Connector of fan motor is disconnected YES NO NO YES Can the fan be turned smooth...

Page 134: ...ubleshooting 125 Troubleshooting Check No 9 Check on connector of fan motor Power supply cable YES NO Check No 11 Check on pulse input of position signal of fan inverter PCB Replace the fan motor of outdoor unit Replace outdoor unit PC board V3077 1A Is the pulse inputted ...

Page 135: ...rt of electronic expansion valve Defect of outdoor unit PC board A1P Troubleshooting V3067 YES Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Return to normal Turn power supply off and turn power supply on again Electronic expansion valve is connected to X26A and X28A of outdoor unit PC board A1P Normal when coil check 1 of the movin...

Page 136: ...ng part of the electronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins Normal Continuity Approx 300Ω Continuity Approx 150Ω No continuity Pin No 1 White 2 Yellow 3 Orange 4 Blue 5 Red 6 Brown 1 White 2 Yellow 3 Orange 4 Blue 5 Red 6 Brown ...

Page 137: ... When the discharge pipe temperature rises suddenly Supposed Causes Faulty discharge pipe temperature Faulty connection of discharge pipe thermistor Faulty outdoor unit PCB Troubleshooting Refer to thermistor resistance temperature characteristics table on P190 V3182 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Discharge pipe tempe...

Page 138: ...d Causes Defect of thermistor R1T for outdoor air Defect of outdoor unit PC board A1P Troubleshooting The alarm indicator is displayed when the fan only is being used also Refer to thermistor resistance temperature characteristics table on P190 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 af...

Page 139: ... pipe temperature thermistor is detected Supposed Causes Defect of thermistor R3T for outdoor unit discharge pipe Defect of outdoor unit PC board A1P Troubleshooting Refer to thermistor resistance temperature characteristics table on P190 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 di...

Page 140: ...on pipe temperature thermistor is detected Supposed Causes Defect of thermistor R2T for outdoor unit suction pipe Defect of outdoor unit PC board A1P Troubleshooting Refer to thermistor resistance temperature characteristics table on P190 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 di...

Page 141: ...e heat exchange thermistor is detected Supposed Causes Defect of thermistor R4T for outdoor unit heat exchanger Defect of outdoor unit PC board A1P Troubleshooting Refer to thermistor resistance temperature characteristics table on P190 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 disc...

Page 142: ...e thermistor is short circuited or open Supposed Causes Faulty receiver gas pipe thermistor R5T Faulty outdoor unit PC board Troubleshooting Refer to thermistor resistance temperature characteristics table on P190 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 R5T from ou...

Page 143: ...ion of low pressure 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 P192 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...

Page 144: ...h pressure 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 P192 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 ...

Page 145: ...thermal Actuates above 99 C Defect of inverter PC board Defect of fin thermistor Troubleshooting Refer to thermistor resistance temperature characteristics table on P190 V3183 Resistance check of the radiator fin thermistor Measure the resistance of the radiator fin thermistor Defect of power unit radiation Intake port is clogged Radiator fin is dirty Outdoor temperature is high NO Replace the the...

Page 146: ...Higher voltage than actual 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 ...

Page 147: ...age may be occurred 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 t...

Page 148: ...turn off power switch before 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 ...

Page 149: ... of Malfunction Detection Check the communication state between inverter PC board and control PC board by micro computer Malfunction Decision Conditions When the correct communication is not conducted in certain period Supposed Causes Malfunction of connection between the inverter PC board and outdoor control PC board Defect of outdoor control PC board transmission section Defect of inverter PC bo...

Page 150: ...ransmission wiring and turn on again NO YES The voltage between red and white of X1A on the inverter unit is the power supply voltage Check the noise filter Z1F for disconnection and check the power supply wiring or the inverter PC board Replace inverter PC board When the LC malfunction occur again replace control PC board NO NO YES NO Are the connectors between the main PC board A1P and inverter ...

Page 151: ...ent to open or short circuited status Malfunction is not decided while the unit operation is continued P4 will be displayed by pressing the inspection button Supposed Causes Defect of radiator fin temperature sensor Defect of inverter PC board Troubleshooting Refer to thermistor resistance temperature characteristics table on P190 V2818 After resetting restart YES YES Is the resistance of thermist...

Page 152: ...n Conditions When the communication data about inverter PC board type is incorrect Supposed Causes Mismatching of inverter PC board Faulty field setting Troubleshooting Refer to Field Setting from Outdoor Unit on P75 V3151 After resetting restart YES YES YES Is the PC board type correct Is the field setting when the PC board was replaced correct Replace PC board by the correct one Replace the PC b...

Page 153: ...ect of outdoor unit PC board A1P Troubleshooting V2819 The suction pipe temperature minus coil temperature is 20 C or higher Resistance is normal when measured with the suction pipe thermistor R2T and coil thermistor R4T disconnected from the outdoor unit PC board 3 5kΩ to 360 kΩ Out of gas or refrigerant system is clogged Requires check of refrigerant system Replace the thermistor Replace the out...

Page 154: ... Display U2 Applicable Models AII outdoor unit models Method of Malfunction Detection Detection of voltage of main circuit capacitor built in the inverter and power supply voltage Malfunction Decision Conditions Supposed Causes Power supply insufficient Instantaneous failure Defect of inverter PC board Defect of outdoor control PC board Main circuit wiring defect ...

Page 155: ...board Does the voltage between terminals P and N gradually rise to 283VDC after turning on The voltage between the P and N terminals is 400VDC and 190VDC or more when the compressor is running NO Is the power supply voltage at the connector X1A of outdoor PC board side Is the power supply voltage applied at LB and NB on the noise filter PC board Monitor field power supply Check the transmission wi...

Page 156: ... Conditions 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 P C B Press the BS4 on P C board on the master outdoor unit for 5 seconds or more to execute check operation Replace the main P C board on the outdoor unit NO YES Caution Be sure to turn off...

Page 157: ...od of Malfunction Detection 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 ...

Page 158: ...or outdoor unit transmission wiring YES NO NO YES Has the indoor or outdoor unit PC board been replaced or has the indoor outdoor or outdoor outdoor unit transmission wiring been modified 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 min...

Page 159: ...nit PC board Defect of 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 SLAVE turn the power supply off once and then back on There is possibility of malfunction caused by ...

Page 160: ...tinue for specified 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...

Page 161: ...r Display U9 Applicable 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 ...

Page 162: ...nutes or more 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 co...

Page 163: ...gle outdoor unit system depends 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 an...

Page 164: ...posed Causes 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 YE...

Page 165: ...function Detection Microcomputer 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 Fail...

Page 166: ... wired incorrectly 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 p...

Page 167: ...ed 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 may be occurred V2830 Is indoor outdoor and outdoor outdoor unit transmission wiring normal Replace indoor unit PC board Test operat...

Page 168: ...ge may be occurred 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 D...

Page 169: ...tral 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 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 ...

Page 170: ...ng 161 5 2 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 ...

Page 171: ...ed V2833 Is transmission 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 ...

Page 172: ...Centralized 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 ...

Page 173: ...r and reset the power supply 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 anothe...

Page 174: ... Decision Conditions 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 Rese...

Page 175: ...Display Operation lamp 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 condi...

Page 176: ...etting 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 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 conn...

Page 177: ...icable Models Unified ON 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 D...

Page 178: ...te controller or 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 its address change...

Page 179: ...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 for centralized control and simultaneously reset all...

Page 180: ...r wiring of 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 cont...

Page 181: ...tection Microcomputer 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 central remote controller and indoor unit Disconnection of connector for setting master controller or individual combined switching ...

Page 182: ...ed incorrectly 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 NO YES NO YES YES NO NO Turn indoor unit s power su...

Page 183: ...etection Malfunction Decision Conditions Supposed Causes Defect of schedule timer PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Reset power supply Does the system return to normal YES NO External factor other than equipment malfunction noise etc Replace the indoor unit PC board V2837 ...

Page 184: ... transmission 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 YES NO Fix the wiring correctly YES NO Has a once connected optional controller for centralized control bee...

Page 185: ...mote Controller Display MA Applicable Models All models of indoor units schedule timer 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 ...

Page 186: ...y for all optional controllers for centralized control simultaneously YES YES NO Is the schedule timer connected Are there two or more optional controllers for centralized control connected with the connector for setting master control YES Is the schedule timer s individual combined connector connected NO NO Cannot be used in combination with a wiring adaptor for electrical appendices Remove the w...

Page 187: ...sion Conditions Supposed Causes Address duplication of optional controller for centralized control Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2840 Are two or more centralized controller connected Reset the power supply for the centralized controller Disconnect all centralized controller except one and reset the c...

Page 188: ...or or relay connector is disconnected Check No 9 Check for Fan Motor Connector Signal Line 1 Turn the power supply off 2 With the fan motor connector disconnected measure the resistance between each pin then make sure that the resistance is more than the value mentioned in the following table Red White Black U V W Measure the resistance values between phases U V W Measurement point Judgment 1 4 1M...

Page 189: ...t terminal on the harness side with the connector connected 6 Disconnect the connector X207A with the power supply OFF and Operation OFF 7 Is the voltage between pins 4 and 3 of X207A about 15 VDC after turning the power supply on 8 Is the voltage between pins 4 and 1 of X207A about 5 VDC 9 Connect the connector X207A with the power supply OFF and Operation OFF 10 When making one turn of the lower...

Page 190: ...t 8 Appendix 1 Piping Diagrams 182 1 1 Outdoor Unit 182 1 2 Indoor Unit 183 2 Wiring Diagrams for Reference 185 2 1 Outdoor Unit 185 2 2 Indoor Unit 186 3 Thermistor Resistance Temperature Characteristics 190 4 Pressure Sensor 192 ...

Page 191: ... port on field piping side φ7 9mm flare connection SP Filter SV SV Oil separator Four way Solenoid valve Solenoid valve valve Pressure regulating valve Compressor Filter Check valve Check valve Check valve Check valve HPS Receiver High pressure switch Filter Heat exchanger pipe Electronic expansion valve Electronic expansion valve Double pipe heat exchanger Filter Heat exchanger Service port 3D046...

Page 192: ... 20 25 32 40 50 63PM3 S 20 25 32 40 50 63RM3 Filter Heate xchanger expansion valve Electronic Fan M Filter Gas pipe connection port connection port Liquid pipe 4D040157 Filter APPLICABLE MODEL TM3 DM3 FM3 LM3 EM3 PM3 RM3 Heat exchanger expansion valve Electronic Fan M Filter Gas pipe connection port connection port Liquid pipe 4D034245 ...

Page 193: ...ion port Flare connection Flare connection φ15 9 or less Attached piping Above φ19 1 Fan R3T R1T Electronic expansion valve Filter Filter R2T Capacity 20 25 32 40 50 63 80 100 125 GAS φ12 7 φ15 9 Liquid φ6 4 φ9 5 R1T Thermistor for suction air temperature R2T Thermistor for liquid line temperature R3T Thermistor for gas line temperature mm ...

Page 194: ...044946B INDOOR OUTDOOR TRANSMISSION F1 F2 OUTDOOR OUTDOOR TRANSMISSION F1 F2 TERMINAL PROTECTIVE EARTH SCREW NOISELESS EARTH NOTES BS1 BS5 AND DS1 2 SWITCH A3P K4R K2R HAP HAP K2R A2P K5R R2 M2F E1HC R2T R3T R5T R4T BS1 5 Y2E Y2S Y3S S2S H1P 7P F1U K1R A1P K1M L1R V1T PS R1 S1NPL S1PH V1R V2R M1C M1F R1T S1NPH Z1C 3C Y1S T1R Y1E S1S X1M X1M DS1 2 C1 2 3 L RED C H SELECTOR KRC19 26A POWER MODULE A2...

Page 195: ...ITCH WIRELESS ADDRESS SET LIGHT EMITTING DIODE ON RED LIGHT EMITTING DIODE DEFROST ORANGE LIGHT EMITTING DIODE FILTER SIGN RED LIGHT EMITTING DIODE TIMER GREEN SELECTOR SWITCH MAIN SUB CONNECTOR WIRING ADAPTOR FOR ELECTORICAL APPENDICES t X1A M GRN GREEN BLU BLUE 3D039564A NOTE 3 NOTE 4 ELECTRIC PARTS BOX OPTIONAL ACCESSORY WIRED REMOTE CONTROLLER M GRY WHT YLW C1R RED X1A M1P Q1M M M1F ORG BLK BR...

Page 196: ...OF X2A AS SHOWN UPPER FIGURE 4 WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE FORCED OFF OR ON OFF CONTROL OPERATION 3 IN CASE USING CENTRAL REMOTE CONTROLLER CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTRUCTION MANUAL CAN BE SELECTED BY REMOTE CONTROLLER IN DETAILS REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT BLK BLACK RED RED BRN BROWN 1 TERMINAL BLOCK CONNECTOR TERMINAL 2 FIEL...

Page 197: ...T ORENGE LIGHT EMITTING DIODE PUSH BUTTON ON OFF ELECTRONIC EXPANSION VALVE TIMER GREEN LIGHT EMITTING DIODE SERVICE MONITOR GREEN LIGHT EMITTING DIODE THERMISTOR COIL LIQUID PIPE THERMISTOR COIL GAS PIPE TERMINAL BLOCK CONTROL MOTOR SWING FLAP PRINTED CIRCUIT BOARD PRINTED CIRCUIT BOARD TERMINAL BLOCK POWER MOTOR INDOOR FAN THERMISTOR AIR WIRED REMOTE CONTROLLER NOTES SS1 R1T L N A1P 220 240V 220...

Page 198: ... YLW YELLOW 6 USE COPPER CONDUCTORS ONLY 3 INCASE USING CENTRAL REMOTE CONTROLLER CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTRUCTIO MANUAL REMOTE CONTROLLER ORG ORANGE BLU BLUE BLK BLACK RED RED BRN BROWN 2 FIELD WIRING 1 TERMINAL BLOCK CONNECTOR TERMINAL R2T R3T K1R K3R Q1M X1M C1R T1R A1P M1F F1U R1T HAP INDOOR UNIT X2M Y1E SS1 R1T X18A WIRED REMOTE CONTROLLER CONNECTOR FOR OPTIO...

Page 199: ...49 83 25 45 8 71 8 54 4 81 08 78 97 46 8 37 8 21 3 76 93 74 94 47 8 05 7 90 2 73 01 71 14 48 7 75 7 60 1 69 32 67 56 49 7 46 7 31 0 65 84 64 17 50 7 18 7 04 1 62 54 60 96 51 6 91 6 78 2 59 43 57 94 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 ...

Page 200: ...33 14 71 33 92 33 35 121 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 ...

Page 201: ...H Low Pressure 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 ...

Page 202: ...Mini UM S M Precautions for New Refrigerant R410 193 Part 9 Precautions for New Refrigerant R410A 1 Precautions for New Refrigerant R410A 194 1 1 Outline 194 1 2 Service Tools 196 ...

Page 203: ...pic mixture refrigerant 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 R407C R410A R22 Composing substances Non azeotropic mixture of HFC32 HFC125 and HFC134a 1 Quasi azeotr...

Page 204: ...r New Refrigerant R410A 195 Thermodynamic characteristic of R410A 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 ...

Page 205: ...ation differs for R410A and R407C 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 R22 and HFCs 2Thread specification is different between R410A an...

Page 206: ...y a pipe extension margin of 0 to 0 5mm was provided for flaring For R410A 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 R410A 9 1 13 2 16 6 19 7 24 0 Class 1 Conventional 9 0 13 0 ...

Page 207: ...th check valve Specifications 2 Discharge speed Maximum degree of vacuum 50 l min 50Hz 100 7 kpa 5 torr 755 mmHg 60 l min 60Hz 2 Suction port UNF7 16 20 1 4 Flare 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 24 5 8 27 29 27 Dimension B For c...

Page 208: ...ts hydrogen 5 Refrigerant oil 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 R410A and R22 units 6 Gauge manifold for R410A 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...

Page 209: ...e with and 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 mixi...

Page 210: ...ck liquid refrigerant charging 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 R410A 1 4 5 16 2min 2 5min 2 Material is changed from CR to H NBR Differences 2 Change of thread specification on hose connectio...

Page 211: ...Precautions for New Refrigerant R410A Mini UM S M 202 Precautions for New Refrigerant R410A ...

Page 212: ... under host computer integrate control blinks repeats single blink 168 drain level above limit 113 drain pump control 50 E E1 120 E3 121 E4 122 E5 123 E7 124 E9 126 electrical and functional parts indoor unit 23 outdoor unit 22 electronic expansion valve PI control 35 error of external protection device 104 excessive number of indoor units 154 external appearance 3 F F3 128 fan motor M1F lock over...

Page 213: ...oor unit 160 malfunction of transmission between indoor and outdoor units in the same system 152 malfunction of transmission between indoor units and outdoor units 148 malfunction of transmission between inverter and control PC board 140 malfunction of transmission between master and slave remote controllers 151 malfunction of transmission between optional controllers for centralized control 162 1...

Page 214: ...cedure 76 flaring tool 197 forced fan on 99 freeze prevention 55 functional parts layout 30 G gauge manifold for R410A 199 H high pressure protection control 45 how to enter the service mode 98 I improper combination of optional controllers for centralized control 163 176 individual setting 99 inverter compressor abnormal 137 inverter current abnormal 138 inverter protection control 48 inverter st...

Page 215: ... indoor unit 183 outdoor unit 182 power supply insufficient or instantaneous failure 145 pressure sensor 192 R refrigerant circuit 28 refrigerant oil 199 refrigerant system not set incompatible wiring piping 158 S self diagnosis by wired remote controller 94 set cool heat separately for each outdoor unit system by cool heat switching remote controller 82 set cool heat separately for each outdoor s...

Page 216: ...nt specifications or designs are subject to change without prior notice Contact Details E mail aircon info panasonic co uk Telephone 01344 476599 www panasonic co uk Address Panasonic Air Conditioning Panasonic House Willoughby Road Bracknell Berks RG12 8FP ...

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