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Mitsubishi Electric MR. SLIM PUZ-M100VKA2, Service Manual, Page: 2 / 116

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Mitsubishi Electric MR. SLIM PUZ-M100VKA2 Service Manual Download Page 2

2

OCH773

2-1. ALWAYS OBSERVE FOR SAFETY

Before obtaining access to terminal, all supply circuits must be disconnected.

INDOOR UNIT SERVICE MANUAL

2

SAFETY PRECAUTION

1

REFERENCE MANUAL

Model Name

Service Ref.

Service Manual No.

Parts Catalog No.

PLA-M50/60/71/100/125/140EA2

PLA-M50/60/71/100/125/140EA2-ET

PLA-M50/60/71/100/125/140EA2-ER

PLA-M50/60/71/100/125/140EA2.UK

PLA-M50/60/71/100/125/140EA2-ET.UK

PLA-M50/60/71/100/125/140EA2-ER.UK

—

—

PKA-M50LA(L)2

PKA-M50LA(L)2-ET

PKA-M50LA(L)2-ER

PKA-M50LA(L)2.TH

PKA-M50LA(L)2-ET.TH

PKA-M50LA(L)2-ER.TH

—

—

PKA-M60/71/100KA(L)2

PKA-M60/71/100KA(L)2-ET

PKA-M60/71/100KA(L)2-ER

PKA-M60/71/100KA(L)2.TH

PKA-M60/71/100KA(L)2-ET.TH

PKA-M60/71/100KA(L)2-ER.TH

—

—

PCA-M50/60/71/100/125/140KA2

PCA-M50/60/71/100/125/140KA2-ET

PCA-M50/60/71/100/125/140KA2-ER

PCA-M50/60/71/100/125/140KA2

PCA-M50/60/71/100/125/140KA2-ET

PCA-M50/60/71/100/125/140KA2-ER

OCH752

OCB752

PSA-M71/100/125/140KA

PSA-M71/100/125/140KA-ET

PSA-M71/100/125/140KA-ER

PSA-M71/100/125/140KA

PSA-M71/100/125/140KA-ET

PSA-M71/100/125/140KA-ER

OCH724

OCB724

PEAD-M50/60/71/100/125/140JA(L)2

PEAD-M50/60/71/100/125/140JA2-ET

PEAD-M50/60/71/100/125/140JA2-ER

PEAD-M50/60/71/100/125/140JA(L)2.UK

PEAD-M50/60/71/100/125/140JA2-ET.UK

PEAD-M50/60/71/100/125/140JA2-ER.UK

—

—

MEANINGS OF SYMBOLS DISPLAYED ON THE UNIT

WARNING

This mark is for R32 refrigerant only. Refrigerant type is written on nameplate of outdoor unit.

Read the OPERATION MANUAL carefully before operation.

Service personnel are required to carefully read the OPERATION MANUAL and INSTALLATION MANUAL before operation.

Further information is available in the OPERATION MANUAL, INSTALLATION MANUAL, and the like.

Summary of Contents for MR. SLIM PUZ-M100VKA2

Page 1: ...Z M140VKA2 TH PUZ M140VKA2 ET TH PUZ M140VKA2 ER TH PUZ M100YKA2 TH PUZ M100YKA2 ET TH PUZ M100YKA2 ER TH PUZ M125YKA2 TH PUZ M125YKA2 ET TH PUZ M125YKA2 ER TH PUZ M140YKA2 TH PUZ M140YKA2 ET TH PUZ M140YKA2 ER TH PARTS CATALOG OCB773 Note This service manual describes technical data of the outdoor units only CONTENTS 1 REFERENCE MANUAL 2 2 SAFETY PRECAUTION 2 3 SPECIFICATIONS 13 4 DATA 14 5 OUTLI...

Page 2: ...60 71 100 125 140KA2 ET PCA M50 60 71 100 125 140KA2 ER PCA M50 60 71 100 125 140KA2 PCA M50 60 71 100 125 140KA2 ET PCA M50 60 71 100 125 140KA2 ER OCH752 OCB752 PSA M71 100 125 140KA PSA M71 100 125 140KA ET PSA M71 100 125 140KA ER PSA M71 100 125 140KA PSA M71 100 125 140KA ET PSA M71 100 125 140KA ER OCH724 OCB724 PEAD M50 60 71 100 125 140JA L 2 PEAD M50 60 71 100 125 140JA2 ET PEAD M50 60 7...

Page 3: ...g If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of compressor The refrigerant oil applied to flare and flange connections must be ester oil ether oil or alkylbenzene oil in a small amount If large amount of mineral oil enters that can cause deterioration of refrigerant oil etc Do not use refrigerant other than R32 If other ref...

Page 4: ...frigerant leaks and accumulates it may ignite or poisonous gases may be released 11 Do not install the unit in places where refrigerant may build up or places with poor ventilation such as a semi base ment or a sunken place in outdoor Refrigerant is heavier than air and inclined to fall away from the leak source 12 Do not use means to accelerate the defrosting process or to clean other than those ...

Page 5: ...he Refrigeration Equipment Where electrical components are being changed they shall be fit for the purpose and to the correct specification At all times the manufacturer s maintenance and service guidelines shall be followed If in doubt consult the manufacturer s technical department for assistance The following checks shall be applied to installations using flammable refrigerants The charge size ...

Page 6: ... procedures shall be used However for flammable refrigerants it is important that best practice is followed since flammability is a considera tion The following procedure shall be adhered to remove refrigerant purge the circuit with inert gas evacuate purge again with inert gas open the circuit by cutting or brazing The refrigerant charge shall be recovered into the correct recovery cylinders For ...

Page 7: ...to cylinders ensure that only appropriate refrig erant recovery cylinders are employed Ensure that the correct number of cylinders for holding the total system charge are available All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant i e special cylinders for the recovery of refrigerant Cylinders shall be complete with pressure relief valve and as...

Page 8: ...e damaged 8 OCH773 2 3 PRECAUTIONS WHEN REUSING EXISTING R22 R410A REFRIGERANT PIPES 1 Flowchart 5 Service tools Use the below service tools as exclusive tools for R32 refrigerant No Tool name Specifications 1 Gauge manifold Only for R32 Use the existing fitting specifications UNF1 2 Use high tension side pressure of 5 3MPa G or over 2 Charge hose Only for R32 Use pressure performance of 5 09MPa G...

Page 9: ...lusive for R32 Gas leak detector Gas leak check Tool for HFC refrigerant Refrigerant recovery equipment Refrigerant recovery Tool exclusive for R32 Refrigerant cylinder Refrigerant charge Tool exclusive for R32 Safety charger Prevent compressor malfunction when charging refrigerant by spraying liquid refrigerant Tool exclusive for R32 Charge valve Prevent gas from blowing out when detaching charge...

Page 10: ... sufficiently large space with out depressions 2 5 Minimum installation area If you unavoidably install a unit in a space where all four sides are blocked or there are depressions confirm that one of these situations A B or C is satisfied Note These countermeasures are for keeping safety not for specification guarantee A Secure sufficient installation space minimum installation area Amin Install i...

Page 11: ...al For the amount to be added locally refer to the installation manual Install the indoor unit so that the height from the floor to the bottom of the indoor unit is h0 for wall mounted 1 8 m or more for ceiling suspended cassette and ceiling concealed 2 2 m or more There are restrictions in installation height for each model so read the installation manual for the particular unit 75 or more openin...

Page 12: ...3 Case 2 for floor standing PSA M Floor standing PSA M h0 0 m M kg Amin m 1 84 No requirements 1 84 6 2 0 6 2 5 7 3 0 9 3 5 10 4 0 11 4 5 13 5 0 14 5 5 15 6 0 17 6 5 18 7 0 20 7 5 21 8 0 22 8 5 24 9 0 25 9 5 26 ...

Page 13: ... output kW 1 5 2 5 2 5 1 5 2 5 2 5 Starter type Direct input Protection devices Shell thermistor H P switch Heat exchanger Plate fin coil Fan Fan drive x No Propeller fan x 1 Fan motor output kW 0 200 Air volume K min 79 86 86 79 86 86 Noise level Cooling SPL dB 51 54 55 51 54 55 Heating SPL dB 54 56 57 54 56 57 Cooling PWL dB 70 72 73 70 72 73 Dimensions W mm inch 1 050 41 5 16 D mm inch 330 40 1...

Page 14: ...3 6 3 6 3 6 3 6 4 0 4 4 4 6 4 8 5 0 3 6 PUZ M140VKA2 ET ER TH PUZ M100YKA2 ET ER TH 3 1 3 1 3 1 3 1 3 1 3 1 3 5 3 9 4 1 3 1 PUZ M125YKA2 ET ER TH 3 6 3 6 3 6 3 6 3 6 3 6 4 0 4 4 4 6 4 8 5 0 3 6 PUZ M140YKA2 ET ER TH 4 2 COMPRESSOR TECHNICAL DATA Winding temperature at 20 C Service Ref PUZ M100VKA2 ET ER TH PUZ M100YKA2 ET ER TH PUZ M125 140VKA2 ET ER TH PUZ M125 140YKA2 ET ER TH Compressor model S...

Page 15: ...XIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 BAND CENTER FREQUENCIES Hz OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 002 MICRO BAR COOLING HEATING MODE 55 57 SPL dB LINE APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz OCTAVE BAND SOU...

Page 16: ...KA2 ET ER TH PUZ M125VKA2 ET ER TH PUZ M125YKA2 ET ER TH PUZ M140VKA2 ET ER TH PUZ M140YKA2 ET ER TH Phase Hz 1 50 3 50 1 50 3 50 1 50 3 50 Voltage V 230 400 230 400 230 400 Current A 11 7 4 2 13 0 4 7 17 4 6 3 15 6 5 6 21 5 7 8 19 0 6 9 Refrigerant circuit Discharge Pressure MPa 2 93 2 70 3 12 2 62 3 28 2 79 Suction pressure MPa 0 96 0 70 0 89 0 69 0 84 0 66 Discharge temperature C 90 2 88 7 89 4...

Page 17: ...17 OCH773 5 OUTLINES AND DIMENSIONS Unit mm ...

Page 18: ...18 OCH773 6 WIRING DIAGRAM PUZ M100VKA2 ET ER TH ...

Page 19: ...19 OCH773 PUZ M125VKA2 ET ER TH PUZ M140VKA2 ET ER TH ...

Page 20: ...20 OCH773 PUZ M100YKA2 ET ER TH PUZ M125YKA2 ET ER TH PUZ M140YKA2 ET ER TH ...

Page 21: ...utdoor unit Remote controller L N 7 1 FIELD ELECTRICAL WIRING power wiring specifications Outdoor model name PUZ M100 125VKA2 PUZ M140VKA2 PUZ M100 125 140YKA2 Outdoor unit power supply N single 50 Hz 230 V N single 50 Hz 230 V 3N 3 ph 4 wires 50 Hz 400 V Outdoor unit input capacity Main switch Breaker 1 32 A 40 A 16 A Wiring Wire No size mm 2 Outdoor unit power supply 5 3 Min 6 3 Min 6 5 Min 1 5 ...

Page 22: ...CND CN01 ORANGE CN01 ORANGE S1 S2 S3 L N YELLOW BLUE BLUE YELLOW CND Indoor unit control board Note There are 3 types of labels labels A B and C Affix the appropriate labels to the units according to the wiring method ON OFF Set the SW8 3 to ON 1 2 SW8 3 C B Simultaneous twin triple system Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units F...

Page 23: ...unit Outdoor unit earth Wire No o Size mm Be sure to connect the indoor outdoor connecting cables directly to the units no intermediate connections Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the intermediate connection point Indoor unit Outdoor unit Indoor Outdoor separate power s...

Page 24: ...rthing spots on the shield wire noise may enter into the shield wire because the earth wire and shield wire form 1 circuit and the electric potential difference occurs due to the impedance difference among earthing spots In case of single spot earthing noise does not enter into the shield wire because the earth wire and shield wire do not form 1 circuit To avoid communication errors caused by nois...

Page 25: ...l refrigerant addresses are 00 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 23 4 5 6 7 8 9 0 1 2 50 M NET Address No Setting example Switch setting SW11 1st digit SW12 2nd digit OFF ON 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4...

Page 26: ...er 100 High pressure switch 63H Thermistor TH4 Discharge Thermistor TH33 Comp surface Compressor Strainer 50 Strainer 100 Strainer 100 4 way valve Muffler Charge plug Charge plug Stop valve Refrigerant GAS pipe connection 15 88 5 8 Refrigerant flow in cooling Refrigerant flow in heating Heat exchanger Thermistor TH6 Condenser Thermistor TH7 Ambient Thermistor TH3 Liquid Distributor LEV B ...

Page 27: ...door units start operating refrigerant collecting operation begins LED1 and LED2 on the control board of the outdoor unit are lit Only push the pump down SWP switch if the unit is stopped However even if the unit is stopped and the pump down SWP switch is pushed less than 3 minutes after the compressor stops the refrigerant collecting operation cannot be performed Wait until the compressor has bee...

Page 28: ... operation manual before test run Especially items to secure safety 9 2 2 TEST RUN Refer to 14 4 TEST RUN for operation procedure 9 2 3 ERROR INFORMATION Refer to 14 2 ERROR INFORMATION when an error occurs 9 2 4 ERROR HISTORY Refer to 14 6 ERROR HISTORY to check the errors occurred in the past 9 2 5 SELF DIAGNOSIS Refer to 14 7 SELF DIAGNOSIS to search for the error history Unit conditions at ser...

Page 29: ...8 P8 Pipe temperature error 9 E4 E5 Remote controller signal receiving error 10 11 Pb Indoor unit fan motor error 12 Fb FB Indoor unit control system error memory error etc 14 PL Abnormality of refrigerant circuit E0 E3 Remote controller transmission error E1 E2 Remote controller control board error Output pattern B Errors detected by unit other than indoor unit outdoor unit etc Wireless remote co...

Page 30: ...pply terminal block TB1 2 Check following items a Connection of power supply terminal block TB1 b Connection of terminal on outdoor power circuit board 3 Check connection of the connector CNDC on the outdoor controller circuit board Refer to 9 8 TEST POINT DIAGRAM 4 Check connection of reactor DCL or ACL Refer to 6 WIRING DIAGRAM 5 a Check connection of outdoor power circuit board PUZ M VKA2 outdo...

Page 31: ...bnormal if the number cannot be checked automatically due to miswiring of indoor outdoor unit connecting wire and etc after power is turned on for 4 minutes 2 Abnormal if outdoor controller circuit board recognizes excessive number of indoor units 1 Check disconnection or looseness or polarity of indoor outdoor unit connecting wire of indoor and outdoor units 2 Check diameter and length of indoor ...

Page 32: ...ring defrosting and discharge thermistor TH4 exceeds 110 C 2 Abnormal if discharge superheat TH4 TH5 increases All the conditions are detected simul taneously for 10 minutes continuously after 6 minutes past from compressor startup including the thermostat indica tion or recovery from defrosting During compressor operation in Cooling only When discharge superheat is less than 80 C in Cooling When ...

Page 33: ...d TH3 TH6 TH7 Outdoor power circuit board CN6 2 Defective thermistor 3 Defective outdoor controller circuit board U6 4250 Power module Check abnormality by driving power module in case overcurrent is detected UF or UP error condition 1 Outdoor stop valve is closed 2 Decrease of power supply voltage 3 Looseness disconnection or reverse of compressor wiring connection 4 Defective compressor 5 Defect...

Page 34: ...KA2 7 Replace outdoor controller circuit board PUZ M VKA2 04 Input current sensor error L1 phase open error Decrease in input current through outdoor unit to 0 1 A only if operation frequency is more than or equal to 40 Hz or compressor current is more than or equal to 6 A 1 L1 phase open PUZ M YKA2 2 Disconnection or loose connection between TB1 and outdoor noise filter circuit board PUZ M YKA2 3...

Page 35: ...a Increase in DC bus voltage to 460 V b Decrease in PFC control voltage to 12 V DC or lower c Increase in input current PUZ M VKA2 only 1 Abnormal increase in power source voltage 2 Decrease in power source voltage instantaneous stop 3 Disconnection of compressor wiring 4 Misconnection of reactor DCL 5 Defective outdoor power circuit board 6 Defective Reactor DCL 7 Disconnection or loose connectio...

Page 36: ...d cannot receive normally any data from remote controller board or from other indoor controller board for 3 minutes Check code E4 2 Indoor controller board cannot receive any signal from remote controller for 2 minutes Check code E4 1 Check disconnection or looseness of indoor unit or transmission wire of remote control ler 2 Set one of the remote controllers main if there is no problem with the a...

Page 37: ...uld not receive any signal normally for 3 minutes 3 Consider the unit as abnormal under the following condition When 2 or more indoor units are connected to an outdoor unit indoor controller board could not receive a signal for 3 minutes from outdoor controller circuit board a signal which allows outdoor controller circuit board to transmit signals Check LED display on outdoor controller circuit b...

Page 38: ...ce between indoor room temperature and pipe liquid or condenser evaporator temperature thermistor Shortage of refrigerant Disconnected holder of pipe liquid or condenser evaporator thermistor Defective refrigerant circuit 2 Reverse connection of extension pipe on plural units connection 3 Reverse wiring of indoor outdoor unit connecting wire on plural units connection 4 Defective detection of indo...

Page 39: ...n are mixed with others and occupation rate on transmission wire rose because of defective repeater a function to connector or disconnect transmission of control and central control system of outdoor unit then abnormality is detected 1 Check if transmission wire of indoor unit FRESH MASTER LOSSNAY or remote controller is not connected to terminal block for central control TB7 of outdoor unit 2 Che...

Page 40: ...erated address 3 Check disconnection or looseness of abnormality generated or abnormality detected transmission wire terminal block and connector 4 Check if tolerance range of transmission wire is not exceeded 5 Check if type of transmission wire is correct or not If the cause of trouble is not any of 1 5 above repair the defect then turn off the power supply of outdoor unit indoor unit and FRESH ...

Page 41: ...r supply of same refrig erant system with LOSSNAY is turned off or within 2 min utes of restart abnormality is detected 3 Contact failure of transmis sion wire of indoor unit of LOSSNAY 4 Disconnection of transmission connector CN2M of indoor unit 5 Defective transmitting receiv ing circuit of indoor unit or LOSSNAY 7 If displayed address or attribute is non existent 1 The unit of former address d...

Page 42: ...rd 1 When LED3 is not blinking Check indoor outdoor connecting wire for Miswiring Reverse wiring of S1 and S2 or break of S3 wiring 2 When LED3 is blinking Indoor outdoor connecting wire is normal 4 Check LED display on outdoor control ler circuit board Refer to 9 9 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS Check protection device connector 63H for contact failure Refer to 9 8 TEST POINT DIAGRAM...

Page 43: ...n for 2 minutes at most after the power supply ON 2 Local remote controller operation is prohibited Remote controlling adaptor is connected to CN32 on the indoor controller board Local remote controller operation is prohibited by centralized controller etc since it is connected to MELANS 3 Phenomena of No 2 1 Normal operation 2 Normal operation 3 Check the phenomena No 2 6 Remote controller displa...

Page 44: ...agnosis after turning on the main power Normal The startup diagnosis will be over in around 2 minutes Miswiring of indoor outdoor connecting wire Breaking of indoor outdoor connecting wire S3 Defective indoor controller board Defective outdoor controller circuit board Refer to Self diagnosis action table in order to solve the trouble In case of communication errors the display of remote controller...

Page 45: ...cuit board have melted Check the wiring of the outdoor unit Check if the wiring is bad Check if the fuses have melted The fuses on the outdoor controller circuit board will have been melted when the indoor outdoor connecting wire short circuits Bad wiring of the outdoor controller board The fuses on the outdoor controller circuit board have melted Check if miswiring breaking or poor contact is cau...

Page 46: ...door controller circuit board Replace the outdoor controller circuit board Normal Only the unit which has the refrigerant address 0 supplies power to the remote controller Set the refrigerant address to 0 In case of the multiple grouping system recheck the refrigerant address again Defective indoor power board Replace the indoor power board Defective outdoor power circuit board Replace the outdoor...

Page 47: ...al block TB5 of the indoor unit Defective remote controller Replace the remote controller Breaking or poor contact of the remote controller wire Check if there is breaking or poor contact of the remote controller wire Check the voltage of the terminal block TB5 connecting the remote controller wire If it is not between DC 10 V and 16 V DC the indoor controller board must be defective The remote co...

Page 48: ...oes not come on Phone Calls From Customers How to Respond Note 1 Check if power is supplied to air conditioner Nothing appears on the display unless power is supplied 2 Unit cannot be restarted for a while after it s stopped 2 Wait around 3 minutes to restart unit The air conditioner is in a state of being protected by the microprocessor s directive Once the compressor is stopped the unit cannot b...

Page 49: ... not a malfunction This is the sound when the fan of the outdoor unit is controlling the airflow amount in order to keep the optimum operating condition 5 A sound similar to water flowing is heard from the unit 5 This is not a malfunction This is the sound when the refrigerant is flowing inside the indoor unit The fan speed does not match the setting of the remote controller during DRY operation N...

Page 50: ...y sweat and water drips down Note Make use of optional parts Drain Socket and Drain pan if these water needs to be collected and drained out for once Water or moisture is expelled from the outdoor unit Batteries are being exhausted Replace them and press the reset button of remote controller The display of wireless remote controller gets dim or does not come on The indoor unit does not receive a s...

Page 51: ...Open or short Refer to 4 2 COMPRESSOR TECHNICAL DATA Disconnect the connector then measure the resistance with a tester Winding temperature 20 C Normal Gray Black Gray Red Gray Yellow Gray Orange Abnormal 46 3 Ω Open or short Refer to the next page Fan motor MF1 MF2 Measure the resistance between the terminals with a tester Winding temperature 20 C Normal W V U 39 kΩ 105kΩ 4 3 kΩ 9 6 kΩ Open or sh...

Page 52: ...INT 2 VCC between 5 and 4 of the fan connector VCC 15 V DC Correct the wiring Replace outdoor controller board Replace outdoor controller board C B and fan motor MF1 Replace outdoor controller board Is the voltage normal Is there contact failure Yes No Did the fuse blow No Yes Check the operation of fan Complete Complete Yes OK Check the operation OK Yes No Replace the defective fan motor Replace ...

Page 53: ... k 2 B constant 4150 3 Rt 17exp 4150 273 t 323 1 1 Thermistor R120 7 465 k 2 B constant 4057 2 Rt 7 465exp 4057 273 t 393 1 1 Medium temperature thermistor Thermistor Heatsink TH8 20 C 250 k 30 C 160 k 40 C 104 k 50 C 70 k 60 C 48 k 70 C 34 k 80 C 24 k 90 C 17 5 k 100 C 13 0 k 110 C 9 8 k High temperature thermistors Thermistor Discharge TH4 Thermistor Comp surface TH33 0 10 20 30 40 50 20 10 0 10...

Page 54: ...the valve is locked more sound can be heard No sound is heard when the pulse number moves from B to A in case coil is burnt out or motor is locked by open phase Sound can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion valve LEV M 1 6 ø4 ø4 ø3 ø2 ø1 1 GY OG RD YE BK 2 3 4 5 Connector LEV A LEV B 12 V DC Outdoor controller board ...

Page 55: ...erwise pipes can bend due to stress How to attach the coil Hold the lower part of the main body shown as A firmly so that the main body does not move and attach the coil by inserting it downward into the main body Then securely attach the coil stop per to main body At this time be careful that stress is not added to lead wire and main body is not wound by lead wire If the stopper is not firmly att...

Page 56: ... for how to set the indoor unit 3 During emergency operation the air conditioner will continuously be operated by supplying power and stopping it It can not be turned on or off by remote control and temperature control is not possible 4 Do not perform emergency heating operation for an extended period of time If the outdoor unit starts defrosting during this period cold air will blow out from the ...

Page 57: ...put of low level sound priority mode 1 to 3 Input of external contact point SW7 Demand control setting 63H High pressure switch SW4 Test operation SW6 Model select SW5 Function switch TH4 Thermistor Discharge TH7 6 Thermistor Ambient 2 phase pipe VFG Voltage between right pins of PC5C and PC5D pin 3 and pin 4 Same as CNF17 4 VSP Voltage between pins of C5A C5B 0 V DC when stopped 1 6 5 V DC when o...

Page 58: ...the outdoor controller circuit board CNAC CNDC Connect to the outdoor controller circuit board CNDC LO1 LO2 LO3 POWER SUPPLY LO1 LO2 LO2 LO3 LO3 LO1 400 V AC OUTPUT Connect to the outdoor power circuit board TB L1 L2 L3 CNCT Primary current Connect to the outdoor power circuit board CN5 CNL Connect to the ACL4 E3 Connect to the electrical parts box E2 Connect to the electrical parts box PUZ M100YK...

Page 59: ... W N3 L3 P2 L1 L2 CNAC1 CNAC2 230 V AC Connect to the outdoor controller circuit board CNAC EI E2 E3 E4 Connect to the earth CN2 Connect to the outdoor controller circuit board CN2 1 5 Transmitting signal to outdoor controller circuit board 0 5 V DC 2 5 Zero cross signal 0 5 V DC 3 4 15 V DC 6 5 15 V DC 7 5 15 V DC CN4 Connect to the outdoor controller circuit board CN4 NI LI Voltage of 230 V AC i...

Page 60: ...y current Connect to the outdoor noise filter circuit board CNCT CN4 Connect to the outdoor controller circuit board CN4 CN2 Connect to the outdoor controller circuit board CN2 1 5 Power circuit board Transmitting signal to the controller board 0 5 V DC 2 5 Zero cross signal 0 5 V DC 3 4 Not used 6 5 15 V DC 7 5 15 V DC 5 1 2 6 7 Diode module DIP IPM TAB connector on X52CA Connect to the RS resist...

Page 61: ...e as follows 1 Change the DIP SW1 1 on the outdoor controller board from OFF to ON 2 Manual defrost will start by the above operation 1 if all these conditions written below are satisfied Heat mode setting 10 minutes have passed since compressor started operating or previous manual defrost is finished Pipe temperature is less than or equal to 8 C Manual defrost will finish if certain conditions ha...

Page 62: ...Dip switch SW5 1 No function 2 Power failure automatic recovery 2 Auto recovery No auto recovery When power supply ON 3 4 5 6 No function SW7 4 1 Model select 3 Demand function Low noise mode Always 2 No function 3 Max Hz setting cooling Max Hz cooling o 0 8 Normal Always 4 Max Hz setting heating Max Hz heating o 0 8 Normal Always 5 No function 6 Defrost Hz setting For high humidity Normal Always ...

Page 63: ...lay A SW1 OG 1 3 BN RD E B F CNDM X X C D A Circuit diagram example Demand function B On site arrangement X Y Relay C External input adapter PAC SC36NA E D Outdoor unit control board E Max 10 m F Power supply for relay By performing the following modification energy consumption can be reduced to 0 100 of the normal consumption The demand function will be activated when a commercially available tim...

Page 64: ...ck error by turning off power and on again P 37 Indoor outdoor unit communication error transmitting error is detected by indoor unit E7 P 37 Indoor outdoor unit communication error signal receiving error is detected by outdoor unit P 37 E8 Indoor outdoor unit communication error transmitting error is detected by outdoor unit P 29 E9 3 blinking Remote controller signal receiving error is detected ...

Page 65: ...d are disconnected 2Measure resistance value of outdoor thermistors P 32 Open short of outdoor thermistors TH3 TH6 TH7 and TH8 U4 P 33 6 blinking Abnormality of heatsink temperature U5 1Check if indoor outdoor units have a short cycle on their air ducts 2Measure resistance value of outdoor thermistor TH8 P 33 7 blinking Abnormality of voltage U9 1Check looseness disconnection and reversed connecti...

Page 66: ...iving error Outdoor unit Indoor outdoor communication error Transmitting error Outdoor unit Miswiring of indoor outdoor unit connecting wire excessive number of indoor units 4 units or more Miswiring of indoor outdoor unit connecting wire converse wiring or disconnection Startup time over Communication error except for outdoor unit Display Inspection unit 0 1 2 3 4 Outdoor unit Indoor unit 1 Indoo...

Page 67: ...urs or more hundreds digit tens digit and ones digit are displayed by turns Example When 2450 hours 245 10 hours 0 5 s 0 5 s 2 s 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Compressor operating current 0 to 50 0 to 50 Note Omit the figures after the decimal fractions A Error postponement code history 1 of outdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponement 0...

Page 68: ...d ones digit are displayed by turns Example When 130 C 0 5 s 0 5 s 2 s C A Code display Code display 0 to 50 When no error history 0 and are displayed by turns When no error history 0 and are displayed by turns 1 ON 2 3 4 5 6 Thermostat ON time 0 to 999 Test run elapsed time 0 to 120 0 to 999 When it is 100 minutes or more the hundreds digit tens digit and ones digit are displayed by turns Example...

Page 69: ...ture are displayed by turns C 39 to 88 When the temperature is 0 C or less and temperature are displayed by turns 39 to 88 When the temperature is 0 C or less and temperature are displayed by turns C C C 8 to 39 Indoor pipe temperature Liquid TH2 2 Indoor 2 39 to 88 Indoor pipe temperature Cond Eva TH5 2 Indoor 2 39 to 88 1 ON 2 3 4 5 6 The number of connected indoor units Unit 0 to 4 The number o...

Page 70: ...is 0 C or less and temperature are displayed by turns When the thermistor detects 100 C or more hundreds digit tens digit and ones digit are displayed by turns Outdoor ambient temperature TH7 39 to 88 39 to 88 When the temperature is 0 C or less and temperature are displayed by turns Normal Overvoltage error Undervoltage error Input current sensor error L1 phase open error Abnormal power synchrono...

Page 71: ...postponement Code display Error history 3 Oldest Alternate display of abnormal unit number and code When no error history 0 and are displayed by turns 6 Outdoor 2 phase pipe TH6 7 Outdoor ambient temperature TH7 8 Outdoor heatsink TH8 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Error thermistor display When there is no error thermistor is displayed Code display Operation frequency ...

Page 72: ...mperature are displayed by turns Example When 15 C 0 5 s 0 5 s 2 s Outdoor heatsink temperature TH8 on error occurring 40 to 200 40 to 200 When the temperature is 0 C or less and temperature are displayed by turns When the temperature is 100 C or more hundreds digit tens digit and ones digit are displayed by turns 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 15 15 15 ...

Page 73: ...sor operating frequency 1 ON 2 3 4 5 6 Code display The following code will be a help to know the operating status of unit Display Compressor operating frequency control Display Compressor operating frequency control Primary current control Secondary current control 1 2 1 4 8 2 The tens digit The ones digit In this digit the total number of activated control is displayed Preventive control for exc...

Page 74: ...etting ta A B 2 ta A B 2 ta A ta A No 2 The data of the sensor on the indoor unit that connected with remote controller ta A ta B ta A ta A No 3 The data of the sensor on main remote controller ta C ta C ta C ta C OUTDOOR INDOOR REMOTE MAIN REMOTE SUB INDOOR OUTDOOR INDOOR REMOTE MAIN REMOTE SUB OUTDOOR INDOOR REMOTE MAIN OUTDOOR INDOOR REMOTE MAIN REMOTE SUB INDOOR 10 1 UNIT FUNCTION SETTING BY T...

Page 75: ...ntake air temperature Measured by thermostat Indoor unit Intake air temperature Unit No 1 Indoor unit Intake air temperature Unit No 2 Indoor unit Intake air temperature Unit No 3 Indoor unit Intake air temperature Unit No 4 Indoor unit Liquid pipe temperature Unit No 1 Indoor unit Liquid pipe temperature Unit No 2 Indoor unit Liquid pipe temperature Unit No 3 Indoor unit Liquid pipe temperature U...

Page 76: ... Error postponement history 2 previous Outdoor unit Error postponement history 3 last but one 0 255 Refer to 11 2 1 DetailContentsinRequestCode Refer to 11 2 1 DetailContentsinRequestCode Refer to 11 2 1 DetailContentsinRequestCode Refer to 11 2 1 DetailContentsinRequestCode 0000 Not connected Examples Ver 5 01 Auxiliary information displayed after version information Examples Ver 5 01 A000 Displa...

Page 77: ...istory 2 second to last Error history 3 third to last Abnormal thermistor display TH6 TH7 TH8 Operation mode at time of error Compressor Operating current at time of error Compressor Accumulated operating time at time of error Compressor Number of operation times at time of error Discharge temperature at time of error Outdoor unit 2 phase pipe temperature TH6 at time of error Outdoor unit Ambient ...

Page 78: ...l For indoor fan pulsation control For indoor DC brushless motor control Indoor Fan operating time After filter is reset Indoor Total operating time Fan motor ON time Indoor fan output value Sj value Indoor fan output value Pulsation ON OFF Indoor fan output value duty value Indoor unit Capacity setting information Indoor unit SW3 information Wireless pair No indoor control board side setting Indo...

Page 79: ... state Operation mode Indoor unit Control state Request code 50 Data display Operation mode Unit No 4 state Unit No 3 state Unit No 2 state Unit No 1 state Display State 0 Normal 1 Preparing for heat operation 2 3 4 Heater is ON 5 Anti freeze protection is ON 6 Overheat protection is ON 7 RequestingcompressortoturnOFF F There are no corresponding units Outdoor unit Control state Request code 51 Da...

Page 80: ...1 Error content 2 0 0 Error content 1 Detected Display Overvoltage Undervoltage L1 phase Power synchronizing error error open error signal error 0 1 2 3 4 5 6 7 8 9 A b C d E F Error content 2 Detected Display Converter Fo PAM error error 0 1 2 3 1 1 2 Note Refer to 9 3 SELF DIAGNOSIS ACTION TABLE for more information Actuator output state 1 Display SV1 Four way valve Compressor 0 1 2 3 4 5 6 7 8 ...

Page 81: ... unit Capacity setting display Request code 70 Outdoor unit Setting information Request code 71 Data display Setting information 1 Setting information 2 0 0 Setting content Display Setting value 0 1 50 2 75 0 3 100 Data display Capacity 25 28 125 140 20 100 Model M100 M125 M140 Setting information 1 Display Defrost mode 0 Standard 1 For high humidity Setting information 2 Display Single Heat pump ...

Page 82: ...Capacity setting state 00 10 42 01 11 02 12 48 03 13 04 14 05 15 06 16 07 17 08 18 09 19 0A 1A 0b 1b 0C 1C 0d 1d 0E 1E 0F 1F Display Pair No setting state 00 No 0 01 No 1 J41 disconnected 02 No 2 J42 disconnected 03 No 3 J41 J42disconnected Wireless pair No indoor control board side setting Request code 165 Data display 0 0 See the table on the right ...

Page 83: ...emperature 64 C Remove the service panel Measure the intake air temperature Measure the discharge temperature Measure the outside air temperature Indoor unit Outdoor unit Smooth Mainte nance Function Conventional inspection work Easy maintenance information unit Compressor Outdoor unit Indoor unit Accumulated operating Heat exchanger 7 Intake air time o10 hours temperature C temperature C Number o...

Page 84: ...8 Indoor heat exchanger temperature 7 Indoor intake air temperature Cool Classification Item Result Inspection Temperature difference Heat Inspection Temperature difference Stable Unstable C C C C Stable Unstable Fixed Hz operation may not be possible under the following tempera ture ranges A In cool mode outdoor intake air temperature is 40 C or higher or indoor intake air temperature is 23 C or ...

Page 85: ...nnect the connector CNF1 LEV A and LEV B on the controller circuit board Symbols on the board CNF1 Fan motor LEV A and LEV B LEV 5 Disconnect the pipe side connections of the following parts Thermistor Liquid TH3 Thermistor Discharge TH4 Thermistor 2 phase pipe Ambient TH7 6 High pressure switch 63H Thermistor Comp surface TH33 4way valve 21S4 6 Remove a nut from the terminal cover See Photo16 17 ...

Page 86: ...e correct 2 When exchanging the reactor make sure to exchange all the 3 reactors 8 Remove 2 electrical parts box fixing screws 4 10 and detach the electrical parts box by pulling it upward The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right Photo 6 YKA2 type Electrical parts box Electrical parts box fixing screw Photo 5 VKA2 type Electrical parts box This photo is fo...

Page 87: ...2 on the bottom plate of the electrical parts box See Photo 11 10 Remove the reactor See Photo 11 Note 1 When reassembling the electrical parts box make sure that the wirings are correct Photo 9 Photo 11 Screws2 Electrical parts box Connectors of Reactor Reactor 5 Removing the thermistor 2 phase pipe TH6 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Disconnect the con...

Page 88: ...ixing screws 5 12 and remove the cover panel rear See Photo 1 5 Remove 4 right side panel fixing screws 5 12 in the rear of the unit and remove the right side panel See Photo 18 6 Disconnect the connectors TH3 white TH4 white and TH33 black on the controller circuit board in the electrical parts box 7 Loosen the fastener for the lead wire under the electrical parts box See Photo 14 8 Pull out the ...

Page 89: ... B RD on the controller circuit board in the electrical parts box 9 Removing LEV 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 2 cover panel front fixing screws 5 12 and remove the cover panel front See Photo 1 4 Remove 4 cover panel rear fixing screws 5 12 and remove the cover panel rear 5 Remove 3 valve bed fixing screws 4 10 and 4 stop valve fixing screws 5 ...

Page 90: ...Remove the service panel See Photo 1 Removing the 4 way valve coil 2 Remove 4 way valve coil fixing screw M5 6 5 3 Remove the 4 way valve coil by sliding the coil toward you 4 Disconnect the connector 21S4 green on the outdoor multi controller circuit board in the electrical parts box 12 Removing the 4 way valve 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the...

Page 91: ...tion except for the ON OFF button 6 ON OFF lamp This lamp lights up in green while the unit is in operation It blinks while the remote controller is starting up or when there is an error 7 Function button F1 Main display Press to change the operation mode Menu screen The button function varies with the screen 8 Function button F2 Main display Press to decrease temperature Main menu Press to move t...

Page 92: ...ol Set temp Auto Basic mode Fri Cool Mode Temp Fan Set temp Auto 2 1 5 6 7 8 9 0 1 3 9 4 2 3 4 5 6 7 2 1 5 Display 4 3 8 4 Appears when the Weekly timer is enabled 5 Appears while the units are operated in the energy saving mode Will not appear on some models of indoor units 6 Appears while the outdoor units are operated in the silent mode 7 Appears when the built in thermistor on the remote contr...

Page 93: ... OFF timer Auto return Clock Main Sub Temp range Auto OFF timer Schedule Daylight saving time Clock Administrator password Operation locked 3D i See sensor Horizontal air direction High power Vane 3D i See Vent Lossnay Comfort Timer Energy saving Basic setting Display setting Operation setting Restriction Weekly timer OU silent mode Timer menu Main display Display details Contrast Brightness Langu...

Page 94: ... input Function setting Rotation setting Maintenance password Dealer information input Error information Test run menu Maintenance information Filter information Cleaning Settings menu Check menu Other menu Auto descending panel Descending operation Self check Descending adjustment Remote controller check Continue from the previous page Not all functions are available on all models of indoor units...

Page 95: ...elect the desired silent level from Normal Middle and Quiet Night setback 1 Use to make Night setback settings Select Yes to enable the setting and No to disable the setting The temperature range and the start stop times can be set Energy saving Restriction Temp range 2 Use to restrict the preset temperature range Different temperature ranges can be set for different operation modes Operation lock...

Page 96: ...layed The model name manufacturing number and contact information need to be registered in advance to be displayed Filter information Use to check the filter status The filter sign can be reset Cleaning Auto descending panel Use to lift and lower the auto descending panel Optional parts Service Test run Select Test run from the Service menu to bring up the Test run menu Test run Drain pump test ru...

Page 97: ...ignal transmitted from the remote controller has been received Signals can be received up to approximately 7 meters in a direct line from the indoor unit in an area 45 to the left and right of the unit However illumination such as fluorescent lights and strong light can affect the ability of the indoor unit to receive signals If the operation lamp near the receiver on the indoor unit is blinking t...

Page 98: ...ing Auto Set Temperature buttons Weekly timer ON OFF button Set Time button Sets the time Airflow button Changes up down airflow direction Mode button Changes operation mode Timer ON button Timer OFF button OFF ON button Fan Speed button Changes fan speed SET SEND button CANCEL button Up Down buttons Menu button i see button Reset button Remote controller display Transmission area 3D i See sensor ...

Page 99: ...l name and serial number will appear The model name and serial number will appear only if the informa tion have been registered Press the F1 or F2 button to go to the next page When an error occurs the following screen will appear Check the error status stop the operation and consult your dealer Contact information dealer s phone number will appear if the information has been registered 2 Press th...

Page 100: ...formation Filter information Cleaning While no errors are occurring page 2 2 of the error information can be viewed by selecting Error information from the Maintenance menu Errors cannot be reset from this screen Checking the error information F1 F2 F3 F4 ...

Page 101: ...intenance password is required 3 If the password matches the Service menu will appear The type of menu that appears depends on the connected indoor units type A screen will appear that indicates the setting has been saved Navigating through the screens To go back to the Service menu button To return to the previous screen button Note The initial maintenance password is 9999 Change the default pass...

Page 102: ...ess the F1 button to go through the operation modes in the order of Cool and Heat Check the auto vane with the F1 F2 F3 buttons Press the button to return to Test run operation Press the button When the test run is completed the Test run menu screen will appear The test run will automatically stop after 2 hours The function is available only for the model with vanes Test run operation Auto vane ch...

Page 103: ... from the unit 6 Press the VANE button and check whether the auto vane operates properly 7 Press the ON OFF button to stop the test run Note Point the remote controller towards the indoor unit receiver while following steps 2 to 7 It is not possible to run in FAN DRY or AUTO mode 1 A B 2 3 14 4 3 PAR SL100A E 1 Press the button 1 to stop the air conditioner If the weekly timer is enabled is on pre...

Page 104: ...Non highlighted items indicate that no function settings are made Screen appearance varies depending on the Unit No setting 4 Use the F1 or F2 button to move the cursor to select the mode number and change the setting number with the F3 or F4 button 5 When the settings are completed press the button to send the setting data from the remote controller to the indoor units 6 When the transmission is ...

Page 105: ...ttern 2 Note Make the function settings shown in Table 1 on Mr SLIM units as necessary Refer to the Instructions Book when it is necessary to set the settings for CITY MULTI units Table 1 summarizes the setting options for each mode number Refer to the indoor unit Installation Manual for the detailed information about initial settings mode numbers and setting numbers for the indoor units Be sure t...

Page 106: ...s remote controller toward the receiver of the indoor unit and press the h button 3 Set the unit number Press the TEMP button to set the unit number Press 01 to specify the indoor unit whose unit number is 01 Direct the wireless remote controller toward the receiver of the indoor unit and press the min button Notes 1 If a unit number that cannot be recognized by the unit is entered 3 beeps of 0 4 ...

Page 107: ...de number B Fig 3 Direct the wireless remote controller toward the receiver of the indoor unit and press the button Current setting number 1 1 beep 1 second 2 2 beep 1 second each 3 3 beep 1 second each 4 Selecting the setting number Use the button to change the Setting number C Fig 4 Direct the wireless remote controller toward the receiver of the indoor unit and press the button 5 To select mult...

Page 108: ... F1 or F2 button and press the button 3 16 error history records will appear 4 records are shown per page and the top record on the first page indicates the latest error record To delete the error history press the F4 button Delete on the screen that shows error history A confirmation screen will appear asking if you want to delete the error history Press the F4 button OK to delete the history Err...

Page 109: ...4 button Delete on the screen that shows preliminary error history A confirmation screen will appear asking if you want to delete the preliminary error history Press the F4 button OK to delete the preliminary error history Preliminary error history deleted will appear on the screen Press the button to go back to the Error history menu Preliminary error history Page Delete Error history menu Error ...

Page 110: ...ute will appear will appear if no error history is available 4 Resetting the error history Press the F4 button Reset on the screen that shows the error history A confirmation screen will appear asking if you want to delete the error history Press the F4 button OK to delete the error history If deletion fails Request rejected will appear Unit not exist will appear if no indoor units that are corres...

Page 111: ...NET address B indoor unit and the number of blinks of the OPERATION INDICATOR lamp check is completed f 14 7 3 PAR SL100A E Procedure 1 Press the CHECK button twice CHECK lights and refrigerant address 00 blinks Check that the remote controller s display has stopped before continuing 2 Press the TEMP buttons Select the refrigerant address of the indoor unit for the self diagnosis Note Set refriger...

Page 112: ...32 There is noise on the transmission line or the indoor unit or another remote controller is faulty Check the transmission line and the other remote controllers NG ALL0 ALL1 Send receive circuit fault The remote controller needs replacing ERC The number of data errors is the discrepancy between the number of bits in the data transmitted from the remote controller and that of the data that was act...

Page 113: ... the button Fixed operation will start Note Stable mode will take approx 20 minutes F1 F2 F3 F4 Check menu Cursor Service menu Error history Diagnosis Smooth maintenance Request code Smooth maintenance Return Smooth maintenance Return Smooth maintenance Return Page Page Page COMP current COMP run time COMP On Off COMP frequency A Hz Hr times Hr Ref address Cool Ref address Cool Ref address Cool Su...

Page 114: ... 01 Outdoor unit Indoor unit 01 Outdoor unit Indoor unit 01 Remote controller Details on the operation data including each thermistor temperature and error history can be confirmed with the remote controller Select Request code with the F1 or F2 button and press the button Select Check with the F1 or F2 button and press the button 2 Set the Refrigerant address and Request code Select the item to b...

Page 115: ...115 OCH773 ...

Page 116: ...ICE TOKYO BUILDING 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Specifications are subject to change without notice CCopyright 2021 MITSUBISHI ELECTRIC CORPORATION Published Sep 2021 No OCH773 Made in Japan ...

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