Toshiba MM-A0160HX Service Manual Download Page 88

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Troubleshooting

Diagnostic Procedure for Check Code

Check code

Operation cause

1. TK2 sensor out of place, miswiring, resistance

[d9]

value characteristics error

TK2 temperature detection

2. Oil tank peripheral circuit error

circuit alarm

Check valve leakage
Capillary blockage
Strainer blockage

Is TK2 sensor out of place

Is there a miswiring of

TK1/TK2/TK3 sensor

Modify miswiring.

TK1 sensor: CN516
TK2 sensor: CN515
TK3 sensor: CN507

Sensor error.

Modify sensor mounting.

Correct the pipe so that the TK2
sensor circuit does not touch the
discharge pipe.

Yes

Is the resistance value

characteristics of TK2 sensor

normal

Yes

[

]

Replace leaked/blockage part.

Is there a leakage or

blockage in the peripheral

circuit of the oil tank

(*1)

Yes

Leakage/blockage

Check interface P.C. board.

Is TK2 sensor in contact

with discharge pipe

Yes

Summary of Contents for MM-A0160HX

Page 1: ...Service Manual Air Conditioner Multi Split Type System Modular Multi System HFCR407C A90 0130 ...

Page 2: ......

Page 3: ...s 19 Refrigerant Piping Systematic Drawings 25 Combined Refrigerant Piping Systematic Drawings 28 Refrigerant Cycle Schematic 32 Outline of Control 33 Self Diagnostic Display Information 46 Control Circuit Configuration 50 Troubleshooting 55 Backup Operation 101 Forced Function of Oil Level Detection 105 Refrigerant Pipe Installation 106 Trial Operation 111 Exploded Views and Service Parts 124 Add...

Page 4: ...ng hurricane level winds and earthquakes Insufficiently secure installation could allow the unit to tip over fall or otherwise cause an accident Ventilate the area if any refrigerant leaks during installation If the refrigerant comes into contact with an open flame it will produce a toxic gas After completing installation make sure that no refrigerant is leaking If the refrigerant leaks indoors an...

Page 5: ...e is determined according to the capacity code of the indoor units connected 2 If the total capacity code value of indoor units exceeds that of outdoor units apply the capacity code of outdoor units 3 When using a branch header indoor units with a maximum of 6 0 capacity code in total can be connected to each branch NOTE If the length of the gas pipe exceeds 30m from the 1st branching to an indoor...

Page 6: ...pplied with the units Note 4 Operatives handling refrigerants must be suitably qualified in accordance with local and national codes of practice and statutory requirements Note 5 Legislation may regulate the removal of waste refrigerant from the systems We advise awareness of any regulations and duty of care Waste refrigerant must NEVER be discharged to atmosphere Note 6 Electrical work should be ...

Page 7: ...erate with the Heating mode taking precidence This precidence can be switched between Heat and Cool mode using the DIP switch 07 on the Outdoor Unit Interface PCB MCC 1343 01 as follows T Inverter X Fixed Speed 0280 28 0kW 10HP 0224 22 4kW 8HP 0160 16 0kW 6HP C Cooling H Heating MM A0280HT INDOOR OUTDOOR A Outdoor Modular Multi 028 2 8kW 1HP 042 4 2kW 1 5HP 056 5 6kW 2HP 080 8 0kW 3HP 112 11 2kW 4...

Page 8: ...High lift design Real pipe length of 100m equivalent length 125m and vertical lift of 50m is made possible with Toshiba s Multi Modular System Vertical lift between indoor units of 30m is the highest in the market This allows for greater flexibility in the location of the system Multiple indoor units Indoor units with different capacities and configurations can be combined up to 135 of the outdoor...

Page 9: ...0 3 8 0 9 6 MM B112 4 11 2 12 8 MM B140 5 14 0 15 8 MM C CR042 1 5 4 2 4 8 MM C CR056 2 5 6 6 4 MM C CR080 3 8 0 9 6 MM C CR112 4 11 2 12 8 MM C CR140 5 14 0 15 8 MM K KR042 1 5 4 2 4 8 MM K KR056 2 5 6 6 4 MM K KR080 3 8 0 9 6 MM N028 1 2 8 3 2 MM N042 1 5 4 2 4 8 MM N056 2 5 6 6 4 MM N080 3 8 0 9 6 MM S SR056 2 5 6 6 4 MM S SR080 3 8 0 9 6 4 Way Cassette Type U 2 Way Cassette Type TU Built In Sl...

Page 10: ... 5 89 Pole P 6 High Pressure Switch Model Name INV ACB JB128 FIX ACB JA64 Operating Pressure kgf cm2 G Operation 3 2 Reset 2 55 High Pressure Sensor Model Name 150NH4 H Operating Conditions 0 3 33MPa Low Pressure Sensor Model Name 150NH4 L Operating Conditions 0 0 98MPa Compressor Case Heater AC240V 74W Accumulator Case Heater AC240V 29W Discharge Temperature Sensor At 50ºC 18 1KΩ At 100ºC 3 35KΩW...

Page 11: ...sformer TT 03 1 DC 16 3V 0 5A AC 11 6V 0 15A 5 Pulse Motor EDM MD12TF 3 DC12V 6 Pressure Sensor 150 100NH6 D Power Voltage DC 12V 7 Sensor for room temperature TA Maximum input C 25 50 38mA at 25 C kΩ 10 3 45 8 Sensor for heat exchanger Tc1 Maximum input C 12 0 25 50 34mA at 25 C kΩ 62 3 32 8 10 3 6 9 Sensor for heat exchanger Tc2 Maximum input C 0 25 50 26mA at 25 C kΩ 34 6 10 3 4 10 Control PCB ...

Page 12: ...V 2 0µF 3 Pulse Motor Valve EDM B40YPTR 7B A Capacity 40 4 Way Cassette MM U080 No PARTS NAME TYPE SPECFICATIONS 1 Fan Motor MMF 230 28A Output rated 28W 6 pole 230V 1 Phase 50Hz 2 Running Capacitor fan motor EEP2H105HQA105 AC 500V 1 0µF 3 Pulse Motor Valve EDM B40YPTR 7B A Capacity 40 4 Way Cassette MM U056 No PARTS NAME TYPE SPECFICATIONS 4 Transformer TT 03 1 DC 16 3V 0 5A AC 11 6V 0 15A 5 Puls...

Page 13: ... Fixing bolt pitch Fixing bolt pitch including fixed leg Grounding part of bottom plate Base Fixing bolt pitch Base Fixing bolt pitch Refrigerant pipe connecting port Gas side braze connection ØA Refrigerant pipe connecting port Liquid side flare connection ØB Balance pipe connecting port flare connection ØC Slot pitch 2 60 x 150 Slot for transport knock out Refrigerant pipe connecting port Liquid...

Page 14: ...0 750 780 12 7 6 4 252 280 280 1 2 MM B080 1 000 1 050 1 080 15 9 9 5 252 580 290 2 3 MM B112 B140 1 350 1 400 1 430 19 0 9 5 252 930 310 3 4 Gas ØF Hanging Bolt Pitch B Refrigerant Pipe Connection Unit Dimension A Hanging Bolt 4 M10 Provided at site Nx Ø200 Air Outlet Drain pipe connection inner diameter 32 diameter 32 minimal for PVC pipes Refrigerant pipe connection Liquid ØG Hanging Bolt Pitch...

Page 15: ...1 364 391 480 200 150 35 35 Refrigerant pipe connection Gas Ø12 7 Refrigerant pipe connection Liquid Ø6 4 Washable filter Air outlet Air inlet Filter Filter Hanging bolt pitch Hanging bolt pitch Unit dimension Unit dimension Optional Air Flow Lower air inlet Shelter board Shelter board Air flow Air flow Drain pipe connection 1 BSP threaded connection Electrical box PCB Transformer and MF Capacitor...

Page 16: ...g connection Gland plate 3xØ20 holes Refrigerant pipe connection Gas ØA Refrigerant pipe connection Liquid ØB Ø150 Ø144 Ø30 Ø97 Ø100 Ø200 6 Ø6 4 Ø6 Ø180 Ø130 Ø144 45 45 45 Ø180 45 Side outlet duct size Fresh air inlet duct size Condensate pipe 1 BSP threaded connection Fresh air inlet 620 Hanging bolt pitch 820 External cassette dimension 880 Ceiling opening 940 Panel dimension 800 Hanging bolt pi...

Page 17: ...ded connection Wiring connection Gland plate 3xØ20 holes Refrigerant pipe connection Gas side Ø19 0 Refrigerant pipe connection Liquid side Ø9 5 Ø150 Ø144 Ø30 Ø97 Ø100 Ø200 6 Ø6 4 Ø6 Ø180 Ø130 Ø144 45 45 45 Ø180 45 Side outlet duct size Fresh air inlet duct size Condensate pipe 1 BSP threaded connection Fresh air inlet 620 Hanging bolt pitch 820 External cassette dimension 880 Ceiling opening 940 ...

Page 18: ... RED BLK BLK BLK WHI 3 1 3 1 3 1 3 1 49C1 ORG BLK BLK YEL BLU BLU WHI WHI WHI WHI WHI WHI WHI BLU BLU BLU CN11 CN08 CN09 PO5 PO4 CN07 WHI T03 CN10 PINK RED BLU WHI BLK 1 2 3 4 5 1 2 3 4 5 CN501 BLK 1 1 T02 CN01 CN02 CN03 CN14 CN15 CN16 CN04 CN06 BLU BLK RED GRY RED BLU BLK RED WHI 1 1 1 1 3 3 3 3 3 3 D406 MCC 1342 01 FL3 2 1 2 1 2 1 2 1 4 3 1 4 3 1 RED BLK WHI 4 3 2 4 3 2 1 1 3 3 1 1 3 3 1 3 1 3 1...

Page 19: ...RN ORG GRY GRY CN307 5 3 1 5 3 1 CN308 5 3 1 5 3 1 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 5 3 1 5 3 1 5 3 1 5 3 1 5 3 1 5 3 1 BLK BLK 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 6 5 4 3 2 1 6 5 4 3 2 1 PMV 3 6 4 3 2 1 PMV 1 1 1 3 3 5 7 1 1 3 3 SV2 SV41 SV3A 7 7 5 5 1 1 3 3 1 1 3 3 SV3C SV3B 1 1 3 3 1 1 3 3 1 1 3 3 20SF 1 1 3 3 FM N T1 T2 T3 E N L1 L2 L3 E BLU BLU WHI BLK BLU BLU WHI BLU P Q P Q P Q SV42 BLU BLU ...

Page 20: ...GRY 1 2 3 4 1 2 3 4 5 3 1 5 3 1 BLK BLK 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 6 5 4 3 2 1 6 5 4 3 2 1 PMV 3 6 4 3 2 1 PMV 1 1 1 3 3 5 7 1 1 3 3 SV2 SV41 SV3A 7 7 5 5 1 1 3 3 1 1 3 3 SV3C SV3B 1 1 3 3 1 1 3 3 1 1 3 3 20SF 1 1 3 3 FM N T1 T2 T3 E N L1 L2 L3 E BLU BLU BLU BLU WHI BLU P Q P Q P Q 5 7 6 4 3 2 1 6 4 3 2 1 RED BLK GRY GRY BLK 5 3 1 5 3 1 Interface Control PC Board MCC 1343 03 CN604 WHI 1 2...

Page 21: ...1 FM 1 1 3 3 5 5 7 7 9 9 1 1 3 3 5 5 3 3 1 1 4 4 2 2 1 1 3 3 1 1 2 2 F H M L UL MCC 1355 01 TR CN28 2 2 TA TC2 TC1 PS MCC 1361 01 PMV RED 2 2 RED 7 7 8 8 9 9 BRN BLK GRN YEL RC WHI GRY 1 1 3 3 ORN 2 2 5 5 6 6 BLU YEL ORN RED 4 4 FM 1 1 3 3 5 5 7 7 9 9 RED 7 7 8 8 9 9 BRN BLK GRN YEL RC WHI GRY 2 2 4 4 6 6 8 8 BRN BLK YEL BLK ORN BLU YEL RED FC Built In Duct MM B140 MM B112 MM B080 MM B056 Symbol N...

Page 22: ... 1 2 2 3 3 4 4 5 5 6 6 WHI YEL ORN BLU BRN RED 6 6 4 4 3 3 1 1 2 2 5 5 WHI YEL ORN BLU BRN RED BLK Q P GRY GRY Q P 4 4 RED RY01 RY02 RY03 RY04 3 3 1 1 FM 1 1 3 3 5 5 7 7 9 9 1 1 3 3 5 5 3 3 1 1 4 4 2 2 1 1 3 3 1 1 2 2 F H M L UL MCC 1355 01 TR CN28 2 2 TA TC2 TC1 PS MCC 1361 01 PMV WHI WHI GRN YEL FC Built In Slim Duct MM SB028 Symbol Name F Fuse PCB FM Fan Motor PMV Pulse Modulating Valve PS Pres...

Page 23: ... 3 3 1 1 2 2 5 5 WHI YEL ORN BLU BRN RED 3 3 1 1 1 1 2 2 1 1 2 2 GRY PUR BLK RED RED RED RED BLU BLU BLK BLK BLK Q P GRY GRY Q P RY01 RY02 RY03 RY04 3 3 1 1 FM 1 1 3 3 5 5 7 7 9 9 1 1 3 3 5 5 3 3 1 1 4 4 2 2 1 1 3 3 1 1 2 2 F H M L UL TR CN28 2 2 TA TC2 TC1 PS MCC 1361 01 PMV DP GM FS BLK FC MCC 1355 01 CN16 4 Way Cassette MM U140 MM U112 MM U080 MM U056 Symbol Name D Drain Pump F Fuse PCB FM Fan ...

Page 24: ... Sensor TS Sensor TK1 Sensor TD1 Sensor TK2 Sensor TK3 Sensor TD2 Strainer Strainer Strainer Strainer Strainer Fan Motor PMV A Liquid tank Dryer x2 Oil separator Condenser 4 Way valve Condenser Pulse motor valve B Cooling bypass PMVB Solenoid valve SV2 High pressure sensor Low pressure sensor High pressure SW High pressure SW Solenoid valve SV3C Solenoid valve SV3B Solenoid valve SV3A Compressor c...

Page 25: ... TE1 Sensor TS Sensor TK1 Sensor TD1 Sensor TK2 Sensor TK3 Sensor TD2 Strainer Strainer Strainer Strainer Strainer Fan Motor PMV A Liquid tank Dryer x2 Oil separator Condenser 4 Way valve Condenser Pulse motor valve B Cooling bypass PMVB Solenoid valve SV2 High pressure sensor Low pressure sensor High pressure SW High pressure SW Solenoid valve SV3C Solenoid valve SV3B Solenoid valve SV3A Compress...

Page 26: ...nsor TE1 Sensor TS Sensor TK1 Sensor TK2 Sensor TK3 Sensor TD1 Strainer Strainer Strainer Strainer Strainer Fan Motor PMV A Liquid tank Dryer x2 Oil separator Condenser 4 Way valve Condenser Pulse motor valve B Cooling bypass PMVB Solenoid valve SV2 High pressure sensor Low pressure sensor High pressure SW Solenoid valve SV3C Solenoid valve SV3B Solenoid valve SV3A Compressor case oil removal valv...

Page 27: ... exchanger at indoor side Evaporator Evaporator Evaporator TC1 TC2 TC1 TC2 Pressure sensor Pressure sensor Check joint Check joint TA Ambient sensor TA Ambient sensor Strainer Indoor unit 3 TC1 TC2 Pressure sensor Check joint TA Ambient sensor Solid line High pressure gas or compressed liquid refrigerant Dotted line Evaporating gas refrigerant Low pressure gas Propeller fan Check joint Pd Check va...

Page 28: ...sor Pressure sensor Check joint Check joint TA Ambient sensor TA Ambient sensor Strainer Indoor unit 3 Evaporator Evaporator Evaporator TC1 TC2 Pressure sensor Check joint TA Ambient sensor Solid line High pressure gas or compressed liquid refrigerant Service valves closed fully at liquid and gas side Dotted line Evaporating gas refrigerant Low pressure gas Propeller fan Check joint Pd Check valve...

Page 29: ...int TA Ambient sensor TA Ambient sensor Strainer Indoor unit 3 TC1 TC2 Pressure sensor Check joint TA Ambient sensor Solid line High pressure gas or compressed liquid refrigerant Service valve opened fully at balancing pipe Service valves closed fully at liquid and gas sides Dotted line Evaporating gas refrigerant Low pressure gas Propeller fan Check joint Pd Check valve Check valve Check valve Ch...

Page 30: ...oint Check joint TA Ambient sensor TA Ambient sensor Strainer Indoor unit 3 Evaporator Evaporator Evaporator TC1 TC2 Pressure sensor Check joint TA Ambient sensor Solid line High pressure gas or compressed liquid refrigerant Service valve fully opened at balancing pipe Service valve fully closed at liquid side Service valve fully closed at gas side Fully closed approx 10min after operation start D...

Page 31: ...m Capillary Ø B mm Ø C mm PMV D Code MM B056 6 4 3 8 Ø1 7x150Lx3 12 7 1 2 40 MM B080 9 5 3 8 Ø2 6x200Lx4 Ø2 6x400Lx2 15 9 5 8 40 MM B112 9 5 3 8 Ø2 2x200Lx6 19 0 3 4 40 MM B140 9 5 3 8 Ø2 2x200Lx6 19 0 3 4 60 MM SB028 6 4 3 8 Ø1 7x250Lx2 12 7 1 2 25 MM U056 6 4 3 8 Ø2 0x200Lx3 12 7 1 2 40 MM U080 9 5 3 8 2 6x 150Lx2 200Lx3 400Lx1 15 9 5 8 40 MM U112 9 5 3 8 2 6x 200Lx6 300Lx2 500Lx2 19 0 3 4 40 MM...

Page 32: ...ve output 4 way valve output OFF in cooling time PMV output Thermostat ON Thermostat OFF Operation signal from indoor Inverter drive Outdoor fan output Fixed speed Mg SW output Each solenoid valve output 4 way valve output OFF in cooling time PMV output Operation start Operation stop OFF OFF OFF OFF OFF ON ON ON or OFF By command from indoor ON or OFF ON Full close Full close Specified opening 2 m...

Page 33: ...G by the cooling fan control The no of waves can be controlled between 0 wave STOP to 16 waves all waves 1 wave 20 sec From 2 waves to Max no of waves Hold From 1 wave to Max no of waves 1 wave 20 sec In down time From 15 waves to 1 wave In up time From 0 wave to 1 wave 1 wave 20 sec Up to 5 waves Interval 0 wave 180 sec control 1 wave 30 sec Max 16 waves Pd pressure kgf cm2 G 22 21 19 18 17 16 15...

Page 34: ...he operation Example of 30HP system HP 30 25 20 15 10 5 1 Requested HP 5 10 15 20 25 30 HP Operation capacity 2b Outdoor fan control 1 Heating fan control 1 The number of waves is controlled according to the TE sensor temperature 2 If TE 20 C is constantly detected for 5 minutes the operation will automatically shut down This is the same condition as when the thermostat automatically becomes switc...

Page 35: ...mpressor of master outdoor unit was ON or when one of the slave outdoor units required oil equalizing this control is implemented When only one outdoor unit is present this control is not implemented Controls to divert oil to the inverter unit in operation Normal oil equalizing operation 6 Refrigerant Oil recovery control 1 Oil recovery control in cooling mode Refrigerant recovery control in heati...

Page 36: ...nutes and the control finishes 2 SV2 low pressure release control This control is to prevent pressure drop during transient operation This control is individually executed by the master outdoor unit and each slave outdoor unit This control is executed as necessary except during stop time and thermostat OFF time 1 Contents of control SV2 is opened when Ps pressure 0 8 kgf cm2 G SV2 is closed when P...

Page 37: ... a minimum of 24 hours before commencing system operation 1 Control conditions Compressor stops and TD 35 C 2 Contents of control This control is executed by temperature detected by TK3 sensor as shown in the following figure NOTE Switching may be heard during heat winding operation but it is not an error fault 10 Crank case heater control This control is executed by the fixed speed unit only 1 Co...

Page 38: ...driving module Q200 and the inverter compressor driver stops when 120 C is detected 2 When the inverter compressor driver stops 1 is counted to the error count If the error count reaches 3 the system generates a fault code and system operation stops NOTE When the error has been determined the ambient outdoor temp or an outdoor fan error is considered 3 Over current protective control 1 The compres...

Page 39: ...t will be compulsorily ceased 10 minutes after it was activated 2 For the master outdoor units Once the above common condition is satisfied and the slave outdoor units have finished sending the defrost signal the whole defrost operation is complete 3 Slave outdoor units When the condition for completing the defrost operation is satisfied they finish sending the defrost signal to the master outdoor...

Page 40: ...cording to the on off signals from the master outdoor units thereon 5 SV41 42 low pressure release control This prevents the low pressure level relaxing during the defrost control operation The master outdoor units and slave outdoor units have their own control over this action when the defrost heating operation is in progress 1 Control details When PS pressure 0 5 kgf cm2 G the control switches S...

Page 41: ...es of the outdoor fan decreases and a low continuous sound may be heard when power is turned on This sound is not abnormal 2 PMV Pulse Motor Valve 1 When the power is turned on a tap sound to initialize PMV is heard If this sound is not heard PMV operation error may be present However this sound may not be heard at a place where outside noise takes prominence 2 Do not remove the driving part Head ...

Page 42: ...ased upon difference between Ta and Ts the operation frequency is indicated to the outdoor unit NOTE The operation frequency in the above zone differs according to horse power or protective control of the outdoor unit 5 Capacity correction control 1 Frequency correction control Frequency of the outdoor unit is corrected so that the present capacity reaches to the certain specified capacity 2 PMV o...

Page 43: ...minutes after the air conditioner has stopped 8 Cooling refrigerant Heating oil recovery control When the indoor units stand by thermostat is OFF or unit operates with FAN mode PMV of the indoor unit is opened by a certain degree when the cooling oil heating refrigerant recovery signal is received from the outdoor unit Only for 4 way 2 way ceiling cassette type operate the indoor fan intermittentl...

Page 44: ...om the remote controller the measured time is reset and LCD display is cleared FILTER is displayed Selection of J11 presence 14 STANDBY display 1 When phase order of the power source wiring is incorrect Over capacity combination of indoor units There is an indoor unit with the indoor overflow alarm 0b 2 The above indoor unit status that cannot operate enters standby status when the thermostat is t...

Page 45: ...ntrol A r Normal operation r1 Under release control operation B 8 Oil equalizing pattern A OL B P Normal operation P1 to P3 Oil equalizing patterns 1 to 3A 9 A B 10 Refrigerant Oil A C Normal operation C1 Under cooling oil recovery control recovery operation B H Normal operation H1 Under heating refrigerant recovery 11 Automatic address A Ad B In normal time Automatic address setup completes 11 Un...

Page 46: ...tatus 2 1 During operation SW04 Push function Inverter frequency data is displayed in decimal notation SW05 Push function Release of frequency data display in decimal notation 6 Outdoor fan operation A FP pattern B 0 to 16 0 wave stop to 16 waves All waves 7 Compressor backup A C1 Under No 1 compressor backup setup B C2 Under No 2 compressor backup setup 8 A B 9 Control valve output A B SV2 OFF H ...

Page 47: ...r unit number Setup with SW03 compressor B A Fixed speed 2 in 1 compressor b Fixed speed 2 compressor C Fixed speed single compressor 3 Fixed speed unit A U2 to U5 Outdoor unit number Setup with SW03 capacity B 6 8 10 6 8 10HP 4 Fixed speed A 6 8 10 6 8 10HP compressor operation B 10 No 1 compressor start No 2 compressor stop status command 01 No 1 compressor stop No 2 compressor start status 5 A ...

Page 48: ...A 01 to 48 Indoor address number B Data is displayed as pulse 9 Indoor saturation temp A 01 to 48 Indoor address number B Data is displayed as temperature 10 Indoor TA sensor A 01 to 48 Indoor address number B Data is displayed as temperature 11 Indoor TC2 sensor A 01 to 48 Indoor address number B Data is displayed as temperature 12 Indoor TC1 sensor A 01 to 48 Indoor address number B Data is disp...

Page 49: ...l to the standard remote controller D11 Green Serial send Flashes synchronized with the send signal from the standard remote controller D22 Red Alarm stop display Goes on when the indoor unit stops with fault D51 Yellow Cycle communication Flashes synchronized with receive signal from the outdoor unit D22 Red D51 Yellow PCB identification code MCC 1361 01 MCC 1361 01 D13 Orange D11 Green Indoor P ...

Page 50: ...se order error If phase order of power source of the outdoor unit is different the indoor unit will display STANDBY mode The check code AF is displayed at the same time as STANDBY c Indoor operation below 0 8HP control When the total capacity of the operating indoor units is below 0 8HP the relevant indoor unit displays STANDBY mode A check code is not displayed Incorrect setup of indoor HP is con...

Page 51: ...ts of address setup see the next page SW03 TA adjust SW06 Ceiling height When height of ceiling exceeds 2 7m set No 1 to ON SW07 Central control switching SW08 Indoor HP Factory set setup For contents of switch setup see section 5 ON Address setup by remote controller is unavailable No 7 Address setup by remote OFF controller is available ON Communication error Non relay No 1 Normal OFF Communicat...

Page 52: ...ent 1 2 3 4 X X X O Indoor capacity 0 5 HP X X O X Indoor capacity 0 8 HP X X O O Indoor capacity 1 0 HP X X O O Indoor capacity 1 2 HP X O X O Indoor capacity 1 5 HP X O O X Indoor capacity 1 7 HP X O O O Indoor capacity 2 0 HP X O O O Indoor capacity 2 5 HP O X X O Indoor capacity 3 0 HP O X X O Indoor capacity 3 2 HP O X O O Indoor capacity 4 0 HP O O X X Indoor capacity 5 0 HP Address DIP swit...

Page 53: ...rd before replacement 3 SW03 Match to setup contents of P C board before replacement 4 SW06 Match to the setup contents of P C board before replacement In some models it is not available 5 SW07 Central Control Switching Match to the setup contents of P C board before replacement 6 SW08 HP setup Match to the setup contents of P C board before replacement Jumper setup Match to the setup contents of ...

Page 54: ...units with a filter problem is indicated followed by the check code LCD Display Standby Mode When combination of indoor units is over the capacity When indoor unit with command excepted by operation mode select switch When phase sequence of power wiring is incorrect Reset Switch Push the switch inside the hole with pin The remote controller resets initialised All data is cleared Check Switch Push ...

Page 55: ...ent from No 1 and No 15 units under grouping operation Check Data Example Room Temp sensor of No 1 is defective In No 15 first the Heat Exchanger sensor has failed Next the indoor outdoor inter unit wire bus communication line is defective Example There is no check data Unit No Check code detected at first Check code detected at last After 3 seconds ...

Page 56: ...pressure Pd protective operation 22 22 Low pressure Ps protective operation bE bE Fixed speed 1 high pressure SW short circuit E1 E1 Fixed speed 2 high pressure SW short circuit F0 F0 Fixed speed 1 IOL OCR short circuits E6 E6 Fixed speed 2 IOL OCR short circuits F1 F1 Inverter IOL short circuit E5 Mg SW deposit controlling display bd bd Outdoor Unit power source phase order miswiring AF AF Extens...

Page 57: ...boards Is there voltage present between pins 4 and 5 of CN600 on interface P C boards Measurement by tester DC 0 to 5V 5 pin GND Is there voltage present between pins 3 and 5 of CN600 on interface P C boards Measurement by tester DC 0 to 5V 5 pin GND Check noise interference from outside etc Refrigerant leak Leak check unit Check connection On inverter P C board CN07 On interface P C board CN600 R...

Page 58: ...e Check connection of connector CN11 Drain pump Indoor main P C board MCC 1361 01 Check and modify wiring circuit MCC 1361 01 Indoor P C board error MCC 1361 01 Float switch error Check and modify wiring circuit Drain pump error No Yes No Yes No Yes No Yes No Yes Yes 1 For confirmation check voltage under condition that connector is connected to CN11 2 Check whether voltage of CN08 pins 1 to 3 of ...

Page 59: ... a connection error of CN18 connector Is there an irregularity of power source Is there a connection error of CN07 connector Is capacitor normal Confirm there is no mechanical lock on the fan motor Is approx DC12V to 13V output to CN18 connector 1 3 pins Is revolution pulse input from hole IC to CN18 connector 2 3 pins during fan operation Measurement by tester Approx DC2 to 2 5V Modify connection...

Page 60: ...oard Is the power source voltage of the outdoor unit normal Is the connection of the wiring connector on the inverter P C board normal Is AC 20A fuse working Is inverter compressor normal Is smoothing capacitor normal 2200µ F 400V x 2 Check inverter P C board Confirm the power source supply Modify connector of wiring Replace inverter P C board and fuse Replace inverter P C board and compressor No ...

Page 61: ...e etc Check code Operation cause 17 1 Defective wiring of inverter P C board Current detect circuit system alarm 2 Defective inverter P C board Check code Operation cause 18 TA sensor open short TE1 sensor open short TE1 sensor open short has been detected Confirm sensor is not disconnected TE1 sensor CN505 confirm circuit and resistance value characteristics of sensor When the sensors are normal ...

Page 62: ...r winding output normal Does voltage reduction occur when the fixed speed compressor has been activated Is the connection of wiring on the inverter P C board normal Is there an abnormal overload Check inverter P C board Confirm the power source supply Modify connector wiring Modify cause of overload Compressor error Modify refrigerant stagnation in the compressor case and start the operation Check...

Page 63: ...3 Inverter P C board error Is the power source voltage of the outdoor unit normal Does the voltage reduction occur when the fixed speed compressor has been activated Is the wiring connection on the inverter P C board correct Is there an abnormal overload Check inverter P C board Confirm the power source supply Modify wiring connector Remove cause of overload No Yes Yes No No Yes Yes No ...

Page 64: ...teristics normal Is the inverter high pressure switch normal Is service valve fully open Does the outdoor fan operate Refrigerant over charge Blockage Pipe breakage Abnormal overload Remove cause Check parts If defective replace Open service valve fully Check and modify wiring Repair defective part Replace high pressure sensor See judgment flow of inverter IOL operation circuit E5 Repair SV2 bypas...

Page 65: ...ristics normal Are the connections for the capacitor and fan motor normal Is service valve fully open Does the outdoor fan operate Refrigerant over charge Blockage Pipe breakage Abnormal overload Remove cause Open service valve fully Check outdoor interface P C board If defective replace Repair defective part Repair SV2 bypass circuit Coil error disconnection of wiring etc No Yes No Yes No Yes No ...

Page 66: ...otal capacity of connected indoor units within 135 Check inverter P C board Check code Operation cause 89 1 No of connected indoor units connected over Indoor over capacity capacity 2 Incorrect setup of indoor unit HP Check code Operation cause 87 Missing phase of outdoor unit power source Missing phase A Phase of the outdoor unit power source is missing Modify the power source wiring 1 Setup no d...

Page 67: ... system setup 8d 2 Outdoor unit power source Reduction in the No of 3 Connection error of communication cable between connected outdoor units outdoor units 4 Connection error of BUS communication 5 Interface P C board error Is the No of connected outdoor units 5 or below No Yes No Yes The maximum number of outdoor units is 5 Check connection of communication cable Is the communication cable connec...

Page 68: ...teristics of sensor resistance value If the sensor is normal replace indoor P C board Is SW09 bit 1 of master outdoor interface P C board off 1 No Yes No Yes Yes Turn off SW09 bit 1 on interface P C board of master outdoor unit It is normal Restart the operation Reset the power source and execute automatic address Id 8F detected Check interface P C board Check code Operation cause 8F 1 Address set...

Page 69: ... board If defective replace Check code Operation cause 1 Connection error of communication cable PQ 95 between indoor and outdoor units Communication alarm between 2 Connection error of connector for indoor indoor and outdoor communication P C board error 3 Connection error of connector for outdoor communication interface P C board error NOTE 1 When first turning on the power supply of the indoor ...

Page 70: ... Yes Yes No No Yes No Yes Modify communication cable Modify wiring of wire connector Is the No of indoor units connected to the outdoor unit normal Check interface P C board of outdoor unit If defective replace Check code Operation cause 1 Connection error of communication cable PQ 96 between indoor and outdoor units Consistency detection of indoor 2 Abnormal No of connected indoor units and outdo...

Page 71: ...ted Is there a connection error of power source wiring Is the source power of either central controller or indoor outdoor turned on Clear the alarm after turning on the power source and start the operation Check communication cable Check power source wiring Check connector connection Check connector connection Clear the alarm after turning on the power source and start the operation Central contro...

Page 72: ...n the central controller Is there duplication of network addresses Check connection of wiring Check duplication of network addresses Check No of connected central controllers to 1 unit Check the central controller If defective replace Check indoor P C board If defective replace Check communication cable connection to slave units of group operation No Yes No Yes Is connection of CN602 connector on ...

Page 73: ...Check connection of wiring Avoid duplication of unit setup to No 1 Check indoor P C board If defective replace Check indoor P C board If defective replace Check remote controller P C board If defective replace Set SW01 to 1 Make unit setup No 1 No Yes Yes No Is group operation performed Yes No Is SW01 set to No 1 on the master unit No Yes Does serial LED Green D11 on the indoor P C board flash Yes...

Page 74: ...Table 1 Investigate the check code Remove the cause and check miswiring again Wiring is correct No Yes No Yes Yes No Are there any other check codes No Yes Table 1 Cooling miswiring Indoor 18 to 32 C Outdoor 15 to 43 C Check code Operation cause 1 Indoor unit PMV connection error main unit error 9F 2 TC1 sensor TC2 sensor TA sensor error Indoor PMV blockage 3 Miswiring Mispiping between indoor and...

Page 75: ...t Check code Operation cause A1 TD2 sensor open short TD2 sensor alarm Open short of TD2 sensor was detected Check connector TD2 sensor CN503 and characteristics of sensor resistance value When sensor is normal replace interface P C board of the outdoor unit Check code Operation cause A2 TS1 sensor open short TS1 sensor alarm Open short of TS1 sensor was detected Check connector TS1 sensor CN504 a...

Page 76: ...e gas pipe and liquid pipe service valves of the outdoor unit fully open Is there a blockage in the PMV assembly on the liquid line Are the resistance characteristics of TD1 sensor normal Is wiring correct Open valves fully Replace TD1 sensor Correct wiring Cooling bypass PMV B error Replace both the PMVs No Yes Yes No Is the cooling bypass PMV B normal No Yes No Yes No Yes Insufficient refrigeran...

Page 77: ...r unit fully open Is there a blockage in the PMV assembly on the liquid line Open valves fully Replace TS sensor Replace both the PMVs No Yes Yes No Are the resistance characteristics of TS sensor normal No Yes Insufficient refrigerant blockage pipe breakage Check code Operation cause AA Pd sensor output voltage alarm Pd sensor alarm If there is an abnormal output voltage of Pd sensor Check connec...

Page 78: ...eration compressor error Is the pipe connection position of Pd sensor Ps sensor correct Are the output voltage characteristics of Pd sensor Ps sensor normal Check connection Pd sensor CN501 Ps sensor CN500 Check the interface board Check compressor Sensor error No Yes No Yes Are the pressure characteristics normal when compressor is operating Yes No Is the wiring of compressor normal Yes No Modify...

Page 79: ...y on the liquid line Open valves fully Replace TD1 sensor Replace both the PMVs No Yes Yes No Are the resistance characteristics of TD1 sensor normal No Yes Insufficient refrigerant blockage pipe breakage Check miswiring of the outdoor unit according to miswiring check function Check code Operation cause AF Abnormal power phase order or missing phase of Phase order alarm power supply to the outdoo...

Page 80: ...o Yes Is the low pressure below 0 95MPa during operation of compressor No Yes Check interface P C board Check code Operation cause b5 Indoor outside input alarm 1 External device error b6 2 Indoor P C board error Indoor outside interlock Is the external device connected to connector CN17 Yes No Is the external device operating normally No Yes Check cause of the operation Check code Operation cause...

Page 81: ...as pipe and liquid pipe service valves of the outdoor unit fully open Is there a blockage in the PMV assembly on the liquid line Open valves fully Replace TD2 sensor Replace both the PMVs No Yes Yes No Are the resistance characteristics of TD2 sensor normal No Yes Insufficient refrigerant blockage pipe breakage Check miswiring of the outdoor unit according to miswiring check function Set normal wi...

Page 82: ... supply and replace Mg SW Sensor error Sensor error No No Yes Yes Are the output voltage characteristics of Pd sensor Ps sensor normal No Yes Insufficient refrigerant blockage Check code Operation cause 1 Mg SW contact deposit protective operation bd 2 TD sensor error Mg SW protective operation 3 Pd sensor Ps sensor error 4 Insufficient refrigerant blockage in pipe ...

Page 83: ...er Repair defective part Check indoor P C board If defective replace Replace low pressure sensor Clean or remove blockage No Yes No Yes Yes Are the characteristics of low pressure sensor normal No Yes Insufficient refrigerant blockage pipe breakage Check miswiring of the outdoor unit according to miswiring check function Set normal wiring Is the wiring correct No Yes Open valves fully Are the gas ...

Page 84: ...r outdoor units connected Is setup of the master outdoor units at center position duplicated Set SW08 bit 2 on interface P C board of each unit 1 Set only one inverter outdoor unit per system Set only one unit as master turn off all source power and then restart the operation No Yes Yes No Check interface P C board 1 Setup of outdoor unit at center position SW08 bit 2 setup on outdoor interface P ...

Page 85: ...roblem replace IPDU P C board Check code Operation cause d4 TK1 sensor open short TK1 sensor alarm Open short of TK1 was detected Check connection TK1 sensor CN516 and resistance value characteristics of the sensor If sensor is normal replace the outdoor interface P C board Check code Operation cause d5 TK2 sensor open short TK2 sensor alarm Open short of TK2 was detected Check connection TK2 sens...

Page 86: ...ce defective part Replace oil tank circuit Open compressor case oil removal valve fully reset power supply and start the operation No Yes No Yes Are TK1 and TK2 sensors correctly connected Open balancing pipe valve fully reset power supply and start the operation No Yes 1 Is there a 2 way valve leakage SV3A SV3C or blockage SV3B Yes No Leakage Blockage Replace defective part 2 Is there a blockage ...

Page 87: ...ve SV3A coil and start a trial operation under condition that AC220V 240V power is on and SV3C valve is connected 6 After operation for several minutes check temperature at secondary side of SV3A valve B When temperature is high equivalent to discharge temp leakage occurs from SV3A valve Replace SV3A coil 7 Using charge hose etc connect the check joint of gas pipe D and the charge port of balancin...

Page 88: ...place Is there a miswiring of TK1 TK2 TK3 sensor Modify miswiring TK1 sensor CN516 TK2 sensor CN515 TK3 sensor CN507 Sensor error Modify sensor mounting Correct the pipe so that the TK2 sensor circuit does not touch the discharge pipe No Yes Yes No Is the resistance value characteristics of TK2 sensor normal No Yes Replace leaked blockage part Is there a leakage or blockage in the peripheral circu...

Page 89: ...wing items 4 Start a trial operation confirm that AC220V 240V power is on to SV3C valve 5 After operation for several minutes check the temperature at the secondary side of SV3C A When temperature is high equivalent to discharge temperature at B valve is not blocked If blocked part is found replace the part 6 During operation check whether leakage occurs in the check valve two positions of pipe co...

Page 90: ...er supply voltage normal Is the wiring connector connection normal on the inverter P C board Check power supply Tighten screws Check the circuit wiring for example wiring to the inverter compressor or connector connection No Yes No Yes Is there a screw loose on the IGBT module or heat sink on inverter P C board Yes No Check inverter P C board Remove blockage Is there a blockage in the heat sink co...

Page 91: ... 1 respectively 3 Check the 7 segment display of interface P C board In case of judgment result A0 A1 Oil level is adequate Resume the operation In case of judgment result A3 Possibility of SV3C valve circuit blockage is considered Check the following items 4 Start a trial operation confirm that AC220V 240V power is on to SV3C valve 5 After operation for several minutes check the temperature at th...

Page 92: ...eakage from SV3C valve is considered Replace SV3C valve TK1 sensor TK2 sensor A Valve strainer Oil separator Check joint Strainer Strainer Strainer Strainer Check joint Capillary Capillary Accumulator Compressor Balancing pipe valve SV3C SV3A valve SV3B valve Check valve Oil removal valve Check valve Check valve Oil tank Sensor error Is the resistance value characteristics of TK1 sensor normal No ...

Page 93: ...ockage in the PMV assembly on the liquid line Are the characteristics of Pd sensor Ps sensor output voltage normal Replace both the PMVs Replace SV2 valve Pd sensor Ps sensor error Yes No No Is there a blockage in the capillary between the gas pipe and the heat exchanger liquid line Replace capillary Yes Yes Is there a blockage in SV2 valve circuit Yes No blockage Check interface P C board Replace...

Page 94: ...ing items Fault check of indoor unit P C board Source check of communication noise interference Incorrect setup of jumper options on indoor unit P C board Check code Operation cause 1 Outdoor unit in automatic addressing mode dF 2 Defective indoor unit interface P C board Outdoor address undefined 3 Communication noise interference While this check code is displayed wait for a moment When the addr...

Page 95: ...ensor normal Are the fixed speed high pressure SW parts normal Is service valve fully open Does outdoor fan operate Refrigerant over charge Blockage Pipe breakage Abnormal overload Eliminate cause Check parts If defective replace Open service valve fully Check and correct wiring Repair failed position Replace high pressure sensor Is fixed speed IOL circuit normal Check outdoor interface P C board ...

Page 96: ...oor units Is the IOL circuit normal 1 Connector 2 Wiring 3 Outdoor P C board Is the cooling bypass PMV B normal Is wiring correct Repair IOL circuit Cooling bypass PMV B error Set normal wiring Open valves fully No Yes Are the gas pipe and liquid pipe service valves of the outdoor unit fully open No Yes No Yes No Yes Insufficient refrigerant blockage pipe breakage Check miswiring of the outdoor un...

Page 97: ...ir OCR circuit Replace Mg SW Replace fixed speed compressor Overload operation liquid compression Check the following 1 Power supply voltage is 380 400 415V 2 Phase missing short circuit of fixed speed compressor power supply Yes No No Yes No Yes Yes No Is Mg SW faulty E6 IOL operation circuit error compressor 1 side F1 IOL operation circuit error compressor 2 side Yes No Yes Is IOL circuit normal...

Page 98: ...d at the right side of the 7 segment display U1 nn nn Check code Switch setup when checking the check code SW01 1 SW02 1 SW03 1 2 Confirm the check code and implement check operation according to the Troubleshooting guide for each check code 3 If U1 d2 is displayed on the 7 segment display an error occurs on the fixed speed outdoor unit Push the push switch SW04 of the inverter outdoor unit for se...

Page 99: ...motor valve 1 Liquid bypass proportional control function for releasing discharge temperature 2 Releases low pressure Oil separator 1 Early protection of oil level down Decreases flow out of discharge oil to cycle Temp 1 TD1 CN502 TD1 Connector Red TD2 Connector White sensor TD2 CN503 1 Used to protect discharge temperature from the compressor 2 Used to control cooling bypass for releasing dischar...

Page 100: ...door unit of which the compressor failed According to the following table set DIP switch SW06 on the interface P C board Table Switch setup in compressor backup 3 Backup setup is now complete Turn on the source power of all the outdoor units When an Outdoor Unit has Failed In this air conditioner backup operation is permissible to both an inverter unit and a fixed speed unit when an outdoor unit h...

Page 101: ...In case of fault of other cycle part system a Remove BUS 1 communication connector BLU CN601 on the interface P C board b Works to the failed fixed speed unit are complete c Then turn on the source power to protect the compressor Turn on crank case heater 3 Perform the following works for the inverter unit 1 Set DIP SW 07 Bit 3 on the interface P C board to ON Setup to correct oil recovery capacit...

Page 102: ...anagement remote controller is connected to the inverter unit the central management remote controller cannot be used 6 In case of fault of other cycle part system a Set DIP SW06 Bit 1 2 3 4 on the interface P C board to ON LED display changes to U0 b Failed inverter work is complete c Then turn on the source power to protect the compressor Turn on winding heater d The central management remote co...

Page 103: ...he outdoor units which are connected to the system 2 The following works are performed to the failed outdoor unit Even if the failed outdoor unit is the inverter unit or fixed speed unit the following works are common specifications 1 Set DIP SW06 Bit 1 and Bit 2 on the interface P C board to ON 2 If refrigerant leakage occurred on PMVB close the service valve of the liquid pipe fully Fully close ...

Page 104: ...not blockage detection detected while oil level detection control was implemented dC Oil level detection circuit The status of TK1 temp is high 50 C or more and was continuously detected Result Judgment A0 Oil amount in the compressor is adequate Check that the operation continues and there is no problem If dC occurred execute check even if oil level was judged as adequate A1 Oil level was judged ...

Page 105: ...Ensure you allow for any change in ambient temperature when the pressure was initially applied and the temperature 24 hours later The pressure will change by approx 0 01MPa 0 1kg cm2 G per 1 C NOTES If piping is long an airtight test is performed for each divided block 1 Indoor side vertical pipe 2 Indoor side vertical pipe outdoor side 3 Leaked position check When a reduction in pressure is detec...

Page 106: ...mmHg or below after vacuuming fully close valves Close VL and VH on the gauge manifold fully stop the vacuum pump After 1 hour check the vacuum gauge reading has not change If there is a change there may be a leak Check for leak 6 After the above procedure of vacuuming has completed replace the vacuum pump with a refrigerant cylinder and advance to additional refrigerant charging work Detailed dra...

Page 107: ...side pipe x additional amount of refrigerant per meter of liquid side pipe Additional refrigerant R kg L1 x 0 030kg m L1 Total length m of 6 4mm diameter liquid side pipe L2 Total length m of 9 5mm diameter liquid side pipe L3 Total length m of 12 7mm diameter liquid side pipe L4 Total length m of 15 9mm diameter liquid side pipe L5 Total length m of 19 0mm diameter liquid side pipe L6 Total lengt...

Page 108: ... way Begin the cooling operation open valve VL and then charge the gas side pipe with refrigerant in the gaseous state 3 While watching the scales display quickly close the valve VL completely when the system has been charged with the proper amount of additional refrigerant Then close the source valve Va on the cylinder and open the gas side packed valve completely 4 Record the amount of additiona...

Page 109: ...1 340 28 0 840 1 820 3 220 5 320 8 120 11 760 29 0 870 1 885 3 335 5 510 8 410 12 180 30 0 900 1 950 3 450 5 700 8 700 12 600 Actual Pipe size Liquid pipe piping length m Ø6 4 Ø9 5 Ø12 7 Ø15 9 Ø19 0 Ø22 2 31 0 930 2 015 3 565 5 890 8 990 13 020 32 0 960 2 080 3 680 6 080 9 280 13 440 33 0 990 2 145 3 795 6 270 9 570 13 860 34 1 020 2 210 3 910 6 460 9 860 14 280 35 1 050 2 275 4 025 6 650 10 150 1...

Page 110: ...check lists 1 and 2 Refer to Troubleshooting to clear the error and then implement the trial operation again Implement check in sequence according to each flowchart of trial operation procedure Is the capacity of field fuse adequate Outdoor unit A Indoor unit A Is the dia of power source cable correct Outdoor unit mm2 Indoor unit mm2 Is the control transmission line correct Indoor Outdoor connecti...

Page 111: ...or error Check transformer failure of indoor microprocessor Check remote controller error Check control P C board failure of indoor unit Does the operation lamp of the remote controller light No Check for over capacity of the total connected indoor units Check power supply phase order of outdoor units Check incorrect setup of indoor unit HP rating SW08 Check the remote controller error Check contr...

Page 112: ...ength and refrigerant amount Check the compressor operation Hz and outdoor fan operation status Is there an abnormal sound of the compressor No Yes Is temp difference of suction discharge air good No Yes Is the supply voltage good 220V 240V No Yes Is the operation pressure normal No Yes NOTE 1 NOTE 2 NOTE 3 This air conditioner is attached with reactivation delay timer so the operation restarts 2 ...

Page 113: ...specification NOTE 2 Criteria of operation current value In cooling operation when the current is within 15 of the specified current value the system is operating normally COOL Max Hz operation The current value differs as described below according to the operation conditions Greater than the specified current 1 Temp in indoor outdoor is high 2 Radiation of outdoor unit is bad Less than the specif...

Page 114: ... or stops according to the operation mode 3 The outdoor unit is in stop status Therefore cool air does not discharge from indoor unit After automatic address is over the above condition is released and normal operation starts automatically 2 Miswiring check causes misjudgment of automatic addressing If miswiring is found during automatic addressing the result is incorrect addressing Therefore chec...

Page 115: ...eck that this display agrees with the expected No of outdoor units Check No of indoor units Set SW01 on the interface P C board of the inverter outdoor unit to 1 SW02 to 4 and SW03 to 3 The No of indoor units connected to the system is displayed on the 7 segment LED A Check that this display is consistent with the expected No of the indoor units Set the switch on the interface P C board of the inv...

Page 116: ...perated Setup operation collectively Push SW04 for 2 seconds or more under condition of SW01 2 SW02 7 NOTE SW03 1 Operation contents match the setup on the remote controller Clear Returns SW01 SW02 and SW03 to 1 Collective All the connected indoor units are stopped Setup stop collectively Push SW05 for 2 seconds or more under condition of SW01 2 SW02 7 SW03 1 Clear Returns SW01 SW02 and SW03 to 1 ...

Page 117: ...W04 05 Push switch SW08 Dip switch Set SW01 on the interface P C board of the inverter outdoor unit to 2 SW02 to 5 and SW03 to 1 Push the push switch SW04 on the P C board of the inverter outdoor unit for 2 seconds or more Check that mode on the remote controller of the indoor unit to be operated is trial cooling operation mode L is displayed Check that C is displayed on the 7 segment LED B of the...

Page 118: ...ayed as SW01 1 SW02 1 SW03 1 return the status to normal according to Troubleshooting and then execute a trial operation Set SW01 to 2 SW02 to 7 and SW03 to 1 on the interface P C board of the inverter outdoor unit Push the push switch SW04 for 2 seconds or more on the interface P C board of the inverter outdoor unit Indoor unit which is the objective operates Push the push switch SW05 for 2 secon...

Page 119: ...yed with setting of SW01 to 1 SW02 to 1 and SW03 to 1 return the status to normal see Troubleshooting and then perform the Trial Operation The Trial Operation is not performed for indoor units with group operation on the remote controller Match display select switch on interface P C board of the inverter outdoor unit with in the following table Push the push switch SW04 on interface P C board of t...

Page 120: ...ontroller by the above item 1 or reset hole Remote controller RBC SR2 PE Main remote controller RBC SR1 PE CHECK button CHECK button Also alarms in the indoor and lock alarm are released However the check code remains in the remote controller After this alarms are detected as usual 7 Segment LED A 7 Segment LED B SW01 02 03 Rotary switch SW04 05 Push switch SW08 Dip switch Push the push switch SW0...

Page 121: ...urces of outdoor indoor units Both power OFF Turn on power of the outdoor unit first then indoor units Operation 7 Segment LED A 7 Segment LED B SW01 02 03 Rotary switch SW04 05 Push switch SW08 Dip switch Set the display select switches on interface P C board of the inverter outdoor unit SW01to 2 SW02 to 4 and SW03 to 1 Push the push switch SW04 on interface P C board of the inverter outdoor unit...

Page 122: ...and push SW04 for 2 seconds or more 7 segment display B changes to FF for 2 minutes Clear After set up PMV returns to normal open pulse automatically when 2 minutes has passed Opened fully for 2 minutes only against FULL OPEN signal from the outdoor unit or software of the indoor unit Pulse Motor Valve PMV forced FULL OPEN FULL CLOSE function in outdoor unit This function allows forced opening clo...

Page 123: ...124 19 Exploded Views and Service Parts Outdoor Units MM A0280HT MM A0280HX MM A0224HT MM A0224HX ...

Page 124: ... VPV 360D 2 2 2 2 28 43A48007 OIL SEPERATOR 1 1 1 1 29 43A48005 ACCUMULATOR 1 1 1 1 30 43A48006 LIQUID TANK 1 1 1 1 31 43A60013 FUSIBLE PLUG 1 1 1 1 32 43A43018 CONDENSER ASSEMBLY RIGHT 1 1 1 1 33 43A43019 CONDENSER ASSEMBLY LEFT 1 1 1 1 34 43A45003 DRYER XH10 R407C 2 2 2 2 35 43146351 SERVICE VALVE Gas 1 1 1 1 36 43A46029 PACKED VALVE Liquid 1 1 1 1 37 43A46030 PACKED VALVE Oil 1 1 1 1 38 43A4603...

Page 125: ...ded Views and Serivce Parts Outdoor Units MM A0160HX 49 8 4 30 1 6 27 44 45 26 10 7 43 50 35 34 33 28 29 9 46 48 31 2 57 5 3 53 51 56 52 54 40 12 13 11 32 39 24 25 14 15 16 17 20 22 21 19 41 42 47 55 36 37 38 23 18 ...

Page 126: ... 26 43A48007 OIL SEPERATOR 1 27 43A48005 ACCUMULATOR 9 Litres 1 28 43A48006 LIQUID TANK 11 Litres 1 29 43A60013 FUSIBLE PLUG 1 30 43A43020 CONDENSER ASSEMBLY RIGHT 1 31 43A43021 CONDENSER ASSEMBLY LEFT 1 32 43A45003 DRYER XH10 R407C 2 33 43146351 SERVICE VALVE Gas 1 34 43A46029 PACKED VALVE Liquid 1 35 43A46029 PACKED VALVE Oil 1 36 43A46031 CHECK VALVE BCV 302DY Dia 8mm 3 37 43A46032 CHECK VALVE ...

Page 127: ...l Parts Assembly MM A0280HT MM A0224HT MM A0280HX MM A0160HX MM A0224HX 1 2 13 6 35 14 32 17 15 34 24 30 31 7 29 9 8 12 4 26 3 19 20 11 10 22 25 27 28 13 23 23 5 8 9 1 2 34 6 32 5 18 29 4 21 20 19 33 16 24 10 3 11 8 1 2 34 6 32 5 18 29 4 21 20 19 33 16 24 10 3 11 ...

Page 128: ...C BOARD ASSEMBLY MCC 1342 01 IPDU 1 1 15 43A69018 P C BOARD ASSEMBLY MCC 1366 01 N F 1 1 16 43A69019 P C BOARD ASSEMBLY MCC 1357 01 SURGE 1 1 1 17 43A69020 P C BOARD ASSEMBLY MCC 1343 03 I F 1 1 18 43A69021 P C BOARD ASSEMBLY MCC 1343 03 I F 1 1 1 19 43A60016 TERMINAL BLOCK 3P 60A L1 L2 L3 1 1 1 1 1 20 43A60017 TERMINAL 3P 30A NEUTRAL 1 1 1 1 1 21 43A60018 TERMINAL BLOCK 2P 1A PQ 1 1 1 22 43A60019...

Page 129: ...OM TEMP ALL 05 43A50021 SENSOR HEAT EX Gas ALL 06 43A50022 SENSOR HEAT EX Liquid ALL 07 43155080 MF CAPACITOR B056 07 43155096 MF CAPACITOR B080 B112 07 43155097 MF CAPACITOR B140 08 43A58007 TRANSFORMER MMS ALL Ref Part No Description Model No 09 43A60025 TERMINAL ABC PQ E ALL 10 43A60012 TERMINAL E L N ALL 11 43A69025 PCB CONTROL CM00C02 ALL 12 43A69024 PC BOARD POWER MMS ALL 13 43A49009 PRESSUR...

Page 130: ...3A21020 FAN MOTOR 06 43A44063 REFRIGERATION ASSEMBLY 07 43A50023 SENSOR ROOM TEMPERATURE 08 43A50019 SENSOR HEAT EXCHANGER Gas 09 43A50020 SENSOR HEAT EXCHANGER Liquid 10 43155100 MF CAPACITOR 11 43A58004 TRANSFORMER MMS 12 43A60010 TERMINAL ABC PQ 13 43A60012 TERMINAL E L N 14 43A69025 PC BOARD CONTROL MMS 15 43A69024 PC BOARD POWER MMS 16 43A72011 DRAIN PAN 17 43A80009 FILTER 18 43A49009 PRESSUR...

Page 131: ...LY ALL 09 43A22003 BELLMOUTH ALL 10 43A19004 FAN GUARD ALL 11 43A58007 TRANSFORMER MMS ALL 12 43A69023 PCB CONTROL CM00C01 ALL 13 43A69024 PCB POWER P00RC01 ALL 14 43A50021 SENSOR HEAT EXCHANGER Gas ALL Ref Part No Description Model No 15 43A50022 SENSOR HEAT EXCHANGER Liquid ALL 16 43A50023 SENSOR ROOM TEMPERATURE ALL 17 43A49009 PRESSURE SENSOR Service ALL 18 43A46037 PULSE MOTOR VALVE COIL ALL ...

Page 132: ...43A22004 BELLMOUTH ALL 10 43A19005 FAN GUARD ALL 11 43A58007 TRANSFORMER MMS ALL 12 43A69023 PC BOARD CONTROL MMS ALL 13 43A69024 PC BOARD POWER MMS ALL 14 43A50021 SENSOR HEAT EXCHANGER Gas ALL Ref Part No Description Model No 15 43A50022 SENSOR HEAT EXCHANGER Liquid ALL 16 43A50023 SENSOR ROOM TEMPERATURE ALL 17 43A49009 PRESSURE SENSOR Service ALL 18 43A46037 PULSE MOTOR VALVE COIL ALL 19 43A60...

Page 133: ...134 20 Additional Literature and Contacts ...

Page 134: ...135 20 Additional Literature and Contacts ...

Page 135: ...TOSHIBA AIR CONDITIONING www toshiba aircon co uk MADE IN UK A90 0130 Revised April 2001 ...

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Toshiba MM-A0160HX, Service Manual

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