Mitsubishi Electric PUZ-M200YKA2 Service Manual Download Page 1

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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

SERVICE MANUAL

R32

PARTS CATALOG (OCB775)

Note:

• This manual describes service

data of the outdoor units only.

No. OCH775

September 2021

Outdoor unit

[Model Name]

PUZ-M200YKA2

PUZ-M250YKA2

[Service Ref.]

PUZ-M200YKA2.UK
PUZ-M250YKA2.UK

CONTENTS

1. REFERENCE MANUAL ·······················2

2. SAFETY PRECAUTION ·······················2

3. FEATURES ····································· 12

4. SPECIFICATIONS ···························· 13

5. DATA ·············································· 14

6. OUTLINES AND DIMENSIONS ··········· 17

7. WIRING DIAGRAM ··························· 18

8. WIRING SPECIFICATIONS ················ 19

9. REFRIGERANT SYSTEM DIAGRAM ··· 24

10. TROUBLESHOOTING ······················· 26

11. FUNCTION SETTING ························ 73

12. MONITORING THE OPERATION DATA

BY THE REMOTE CONTROLLER ······· 74

13. EASY MAINTENANCE FUNCTION ······ 82

14. DISASSEMBLY PROCEDURE ············ 84

15. REMOTE CONTROLLER ··················· 90

Summary of Contents for PUZ-M200YKA2

Page 1: ...Ref PUZ M200YKA2 UK PUZ M250YKA2 UK CONTENTS 1 REFERENCE MANUAL 2 2 SAFETY PRECAUTION 2 3 FEATURES 12 4 SPECIFICATIONS 13 5 DATA 14 6 OUTLINES AND DIMENSIONS 17 7 WIRING DIAGRAM 18 8 WIRING SPECIFICATIONS 19 9 REFRIGERANT SYSTEM DIAGRAM 24 10 TROUBLESHOOTING 26 11 FUNCTION SETTING 73 12 MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 74 13 EASY MAINTENANCE FUNCTION 82 14 DISASSEMBLY PROCEDU...

Page 2: ...autions during the repair service Do not perform the work involving the electric parts with wet hands Do not pour water into the electric parts Do not touch the refrigerant Do not touch the hot or cold areas in the refrigerating cycle When the repair or the inspection of the circuit needs to be done without turning off the power exercise great caution not to touch the live parts When opening or cl...

Page 3: ...e pipes and make sure that the insides of the pipes are clean Change flare nut to the one provided with this product Use a newly flared pipe Avoid using thin pipes Do not use refrigerant other than R32 If other refrigerant R22 etc is used chlorine in refrige rant can cause deterioration of refrigerant oil etc Handle tools with care If dirt dust or moisture enters into refrigerant cycle that can ca...

Page 4: ... refrigerant 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 basement 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 thos...

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: ... conventional 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 c...

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: ... If the existing air conditioner cannot operate use a refrigerant recovery device to collect the refrigerant In case existing pipes were used for gas or oil heat pump systems be sure to clean the pipes for M200 250 models The existing pipe thickness does not meet specifications or the pipes are damaged 8 OCH775 2 3 PRECAUTIONS WHEN REUSING EXISTING R22 R410a REFRIGERANT PIPES 1 Flowchart 5 Service...

Page 9: ...9 05 17 0 22 0 26 0 29 0 17 0 22 0 24 0 27 0 36 0 Nominal dimensions in Flare nut dimensions Outside diameter Dimension B mm mm R32 R410a R22 Dimension A Dimension B Gauge manifold Charge hose Gas leak detector Refrigerant recovery equipment Refrigerant cylinder Safety charger Charge valve Vacuum pump Flare tool Bender Pipe cutter Welder and nitrogen gas cylinder Refrigerant charging scale Vacuum ...

Page 10: ... there is insufficient ventilation refrain from using of flames until the work environment can be improved by ensuring appropriate ventilation Install outdoor units in a place where at least one of the four sides is open and in a 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 dep...

Page 11: ...nt 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 For floor standing PSA M 0 m There are restrictions in installation height for each model so read the installation manual for the particular unit 75 ...

Page 12: ...ping The additional refrigerant charging work during instal lation often causes problems It is completely eliminated by chargeless system This unique system improves the quality and reliability of the work done It also helps to speed up the installation time PUZ M200YKA2 UK PUZ M250YKA2 UK Case 2 for floor standing PSA M M kg Amin m 1 84 1 84 No requirements 2 0 6 6 2 5 7 3 0 9 3 5 10 4 0 11 4 5 1...

Page 13: ...hanger Plate fin coil Fan Fan drive No Propeller fan 2 Fan motor output kW 0 200 0 200 Airflow m3 min CFM 140 4 940 Defrost method Reverse cycle Sound pressure level Cooling dB 58 59 Heating dB 60 62 Dimensions W mm inch 1 050 41 5 16 D mm inch 330 40 13 1 9 16 H mm inch 1 338 52 11 16 Weight kg lb 129 284 138 304 Refrigerant R32 Charge kg lb 5 6 12 3 6 8 15 0 Oil Model L 2 30 FW68S REFRIGERANT PI...

Page 14: ... 5 5 5 8 6 8 0 6 7 4 1 2 8 0 1 8 8 6 2 4 9 2 6 8 5 3 COMPRESSOR TECHNICAL DATA 5 2 ADJUSTING THE AMOUNT OF REFRIGERANT Service Ref Initial charged Amount of additional refrigerant charge kg 31 40 m and less 41 50 m and less 51 60 m and less 61 70 m and less PUZ M200YKA2 UK 5 6 0 4 0 8 1 2 1 6 PUZ M250YKA2 UK 6 8 0 6 1 2 1 8 2 4 Winding temperature at 20 C Service Ref PUZ M200YKA2 UK PUZ M250YKA2 U...

Page 15: ... 0 dB 0 0002 µbar BAND CENTER FREQUENCIES Hz NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 PUZ M200YKA2 UK COOLING MODE HEATING 58 SPL dB 60 LINE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB 0 0002 µbar BAND CENTER FREQUENCIES Hz NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 PUZ M250YKA2 UK COOLING MODE HEA...

Page 16: ...15 19 41 6 10 7 38 9 9 9 7 35 7 35 6 24 6 24 0 73 0 85 0 06 0 05 2 69 3 16 3 13 2 69 0 76 1 07 1 07 0 78 0 07 2 0 44 2 0 10 2 0 64 2 Electrical circuit Refrigerant circuit Indoor side Outdoor side Representative matching SHF BF Mode Capacity Input Total Phase Hz Voltage Input Current Outdoor unit Phase Hz Voltage Current Discharge pressure Suction pressure Discharge temperature Condensing temperat...

Page 17: ...17 OCH775 Unit mm 6 OUTLINES AND DIMENSIONS 1 2 3 1 2 3 3 ...

Page 18: ...18 OCH775 7 WIRING DIAGRAM ...

Page 19: ...unit S2 S3 S1 S2 S3 S1 S2 S3 Indoor outdoor unit connection cable Indoor unit Remote controller Outdoor unit L1 L2 L3 N Unit power supply B C B Earth leakage breaker C wiring circuit breaker or isolating switch 1 2 1 2 1 2 S1 S2 S3 S1 S2 S3 S1 S2 S3 S1 S2 S3 Indoor outdoor connection cable Indoor unit Indoor unit Indoor unit Remote controller Outdoor unit L1 L2 L3 N Unit power supply B C Synchroni...

Page 20: ...s change the connections of the connectors as shown in the following figure Connectors Indoor unit control board Separate indoor unit outdoor unit power supplies S1 S2 S3 L N BLUE BLUE YELLOW YELLOW 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 A B and C Affix the appropriate labels to the units according to the wiri...

Page 21: ...umber of wires Polarity L m 5 Round 2 5 3 Clockwise S1 S2 S3 Pay attention to stripe of yellow and green 30 1 Flat 2 5 3 Not applicable Because center wire has no cover finish Not applicable 4 Flat 1 5 4 From left to right S1 Open S2 S3 18 2 Round 2 5 4 Clockwise S1 S2 S3 Open Connect S1 and S3 to the opposite angle 30 3 Note Power supply cords of appliances shall not be lighter than design 60245 ...

Page 22: ...are more than 2 earthing 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 the 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...

Page 23: ...hes are OFF All 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 1s digit SW12 10s 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 ...

Page 24: ...ce Thermistor TH8 Control Protection Compressor Strainer 50 Strainer 100 Strainer 100 Strainer 100 4 way valve Muffler Charge plug Low pressure Charge plug High pressure Ball valve Refrigerant GAS pipe connection ø25 4 ø1 inch Refrigerant flow in cooling Refrigerant flow in heating Heat exchanger Thermistor TH6 2 phase pipe Thermistor TH7 Ambient Thermistor TH3 Liquid Distributor Thermal protector...

Page 25: ...cting operation cooling test run Push the pump down SWP switch push button type on the control board of the outdoor unit The compressor and venti lators indoor and outdoor 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 p...

Page 26: ...played by self diagnosis and actions to be taken for service summary Present and past check codes are logged and they can be displayed on the control board of outdoor unit Actions to be taken for service which depends on whether or not the trouble is reoccurring in the field are summarized in the table below Check the contents below before investigating details Unit conditions at service Check cod...

Page 27: ...umber of times Wireless remote controller Wired remote controller Beeper sounds OPERATION INDICATOR lamp blinks Check code Number of times Wireless remote controller Wired remote controller 1 P1 Intake sensor error P9 Pipe TH5 sensor error 2 P2 Pipe TH2 sensor error 3 E6 E7 Indoor outdoor unit communication error 4 P4 Drain sensor error Float switch connector CN4F open 5 P5 Drain pump error PA For...

Page 28: ...y 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 Check connection of the connector CNDC on the noise filter circuit board Refer to 10 8 TEST POINT DIAGRAM 4 Check connection of reactor DCL or ACL4 Refer to 7 WIRING DIAGRAM 5 a Check connection of outdoor noise filter circuit board b Replace...

Page 29: ...r unit If EA is detected 4 6 Turn the power off once and on again to check Replace outdoor controller circuit board indoor controller board or indoor power board if abnormality occurs again 7 Check if refrigerant addresses SW1 3 to SW1 6 on outdoor controller circuit board are overlapping in the case of group control system 8 Check transmission path and remove the cause Note The descriptions above...

Page 30: ...ature thermistor TH5 exceeds 40 C during defrosting and comp surface temperature thermistor TH4 TH33 exceeds 110 C 2 Abnormal if discharge superheat Cooling TH4 TH33 TH6 Heating TH4 TH33 TH5 increases All the conditions in A or B are detected simultaneously for 10 minutes continuous ly after 6 minutes past from compressor Startup including the thermostat indication or recovery from defrosting Cond...

Page 31: ...CONNECTORS AND JUMPERS 6 Replace outdoor power circuit board 7 Replace 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 converse of compressor wiring connection 4 Defective compressor 5 Defective outdo...

Page 32: ...CCT AC current trans on the outdoor noise filter circuit board 5 Defective input current detection circuit in outdoor power circuit board 6 Defective outdoor controller circuit board 1 Check the field facility for the power supply 2 Check the wiring between TB1 and out door noise filter circuit board 3 Check CN5 CNCT wiring 4 Replace outdoor noise filter circuit board 5 Replace outdoor power circu...

Page 33: ... pressure Abnormal if the following conditions are detected for continuously 3 minutes after compressor starts heating operating for 10 minutes TH7 TH3 4 C and TH5 Indoor room temperature 2 C Thermistor TH3 Outdoor liquid pipe temperature TH5 Indoor cond eva temperature TH7 Ambient temperature 1 Stop valve of outdoor unit is closed during operation 2 Leakage or shortage of refrigerant 3 Malfunctio...

Page 34: ... displayed replace remote controller c When E3 or ERC is displayed noise may be causing abnormality Note If the unit is not normal after replacing indoor controller board in group control indoor con troller board of address 0 may be abnormal E1 or E2 Remote controller control board 1 Abnormal if data cannot be normally read from the nonvolatile memory of the remote controller control board Check c...

Page 35: ...d into power supply 3 Noise has entered into outdoor control wire 1 3 Turn the power off and on again to check If abnormality occurs again replace indoor controller board E8 6840 Indoor outdoor unit communication error Signal receiving error Outdoor unit Abnormal if outdoor controller circuit board could not receive anything normally for 3 minutes 1 Contact failure of indoor outdoor unit connectin...

Page 36: ...tarts when defrosting mode is over Heating range 3 Condenser Evaporator temperature TH5 intake temperature TH1 1 Slight temperature difference 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 Converse connection of extension pip...

Page 37: ...e of collision of transmission 2 Data could not reach transmission wire for 8 to 10 minutes continuously because of noise etc Note The address and attribute displayed at remote controller indicate the controller that detected abnormality 1 Transmission processor could not transmit signal because short cycle voltage of noise and the like have entered into transmission wire continuously 2 Transmissi...

Page 38: ...unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again If the cause of trouble is not in 1 5 above in single refrigerant system one outdoor unit controller of displayed address or attribute is defective If the cause of trouble is not in 1 5 above in different refrigerant system 2 or more outdoor units judge with 6 6 If address of abnormality source is t...

Page 39: ...ned off or within 2 minutes of restart abnormality is detected 2 Contact failure of transmission wire of indoor unit or FRESH MASTER 3 Disconnection of transmission connector CN2M of indoor unit or FRESH MASTER 4 Defective transmitting receiving circuit of indoor unit or FRESH MASTER 6 If displayed address or attribute is LOSSNAY indoor unit detects abnormal ity when indoor unit transmits signal t...

Page 40: ...is indicated Please Wait is not displayed Please Wait is displayed 1Check LED2 on indoor controller board 1 When LED2 is lit check the remote controller wiring for breaking or contact failure 2 When LED2 is blinking check short circuit of remote controller wiring 3 When LED2 is not lit refer to phenomena No 3 below 2Check the following Failure of remote controller if Please Wait is not displayed R...

Page 41: ...ses Check if heat exchanger is clogged by inspecting discharging pressure Clean the heat exchanger 4 Remove the blockage 7 Remote controller display works normally and the unit performs heating operation however the capacity cannot be fully obtained 1 Linear expansion valve fault Opening cannot be adjusted well due to linear expansion valve fault 2 Refrigerant shortage 3 Lack of insulation for ref...

Page 42: ...nosis 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 the case of communication errors the display of remote controll...

Page 43: ...rd are blown Check the wiring of the outdoor unit Check if the wiring is bad Check if the fuses are blown The fuses on the outdoor controller circuit board will be blown when the indoor outdoor connecting wire short circuits Bad wiring of the outdoor controller board The fuses on the outdoor controller circuit board are blown Check if miswiring breaking or poor contact is causing this problem Indo...

Page 44: ...troller 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 the 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 pow...

Page 45: ...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 10 and 16 VDC the indoor controller board must be defective The remote controll...

Page 46: ...e menu See the operation manual that came with the product for how to clean the filters 3 Heat Standby is displayed on the screen 3 This is displayed when the unit starts HEAT operation when the thermostat puts the compressor in operation mode or when the outdoor unit ends DEFROST operation and returns to HEAT operation The display will automatically disappear around 10 minutes later While Heat St...

Page 47: ...ntrolling 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 2 The fan speed does not match the setting of the remote controller in HEAT operation The up down vane will be automatically set to horizontal blow in these cases ...

Page 48: ...bove situations are released 3 The airflow direction does not change Up down vane left right louver 3 1 Check if the vane is set to a fixed position Check if the vane motor connector is removed 2 Check if the air conditioner has a function for switching the air direction 3 If the air conditioner does not have that function Unsupported function will be displayed on the remote controller when AIR DI...

Page 49: ...ps down HEAT water drips down from the heat exchanger 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 ...

Page 50: ...the resistance between the terminals with a multimeter At the ambient temperature 20 C Solenoid valve coil 4 way valve 21S4 Motor for compressor MC Linear expansion valve LEV A LEV B Normal Abnormal Open or short Abnormal Open or short Refer to 5 3 COMPRESSOR TECHNICAL DATA Disconnect the connector then measure the resistance with a multimeter Winding temperature 20 C Normal Gray Black Gray Red Gr...

Page 51: ...and 4 of the fan connector VCC 15 VDC Did the fuse blow Is there contact failure Is the voltage normal Check the operation Complete Complete Check the operation of fan Disconnect the FAN motor connector and measure the resistance of connector pins Refer to 10 5 HOW TO CHECK THE PARTS Is the fan motor normal Yes No Replace the outdoor controller circuit board C B Replace the outdoor controller circ...

Page 52: ...17 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 Heat Sink TH8 20 250 k 30 160 k 40 104 k 50 70 k 60 48 k 70 34 k 80 24 k 90 17 5 k 100 13 0 k 110 9 8 k High temperature thermistors Thermistor Discharge TH4 Thermistor Comp Surface TH33 0 10 20 30 40 50 20 10 0 10 20 30 40 50 Temp...

Page 53: ...s 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 driv er handle while putting the screw driver to the linear expansion valve LEV M 1 6 ø4 ø4 ø3 ø2 ø1 1 Gray Orange Red Yellow Black 2 3 4 5 Connector LEV A 12 VDC Outdoor controller board Dri...

Page 54: ...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 55: ...ring 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 indoor unit 5 Do not perform emergen...

Page 56: ... 50 35 5 30 5 HEAT 20 5 45 50 22 5 80 5 7 5 30 5 1 1 1 1 2 2 Remarks 1 If the thermistor temperature data is normal not open short that data is loaded into the control as valid data When the unit enters emergency operation and TH values are mismatched set the thermistors to open short And the unit runs emergency operation with the values listed above 2 If one thermistor is set to open short the va...

Page 57: ...W5 Function switch TH4 Thermistor Discharge TH3 Thermistor Liquid 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 operated LEV A B Linear expansion valve SWP Pump down SW8 Pipe replace Wiring replace CNM Connect to A control service tool CNMNT Connect to M N...

Page 58: ...ect to 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 VAC 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 E2 Connect to the electrical parts box 58 OCH775 Outdoor noise filter circuit boar...

Page 59: ...oise 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 VDC 2 5 Zero cross signal 0 5 VDC 3 4 Not used 6 5 16 VDC 7 5 16 VDC TB U TB V TB W Connect to the compressor MC Voltage among phases 10 400 VAC Diode module U P2 V W N2 L3 N1 L1 P1 L2 ...

Page 60: ...rom 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 have been satisfied Manual defrost can be done if above conditions have...

Page 61: ...tion switch Valid Normal Always 3 4 No function SW6 1 No function 2 3 4 Model select 1 2 3 6 4 7 4 5 8 OFF ON 200Y 1 2 3 6 4 7 4 5 8 OFF ON 250Y MODEL SW6 The black square indicates a switch position 5 6 7 8 2 Power failure automatic recovery can be set by either remote controller or this DIP SW If one of them is set to ON Auto recovery activates Please set Auto recovery basically by remote contro...

Page 62: ...noise mode B On site arrangement C External input adapter PAC SC36NA E X Relay D Outdoor unit control board E Maximum 10 m F Power supply for relay A SW1 Orange 1 3 Brown Red 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 Maximum 10 m F Power supply for relay By performing the followi...

Page 63: ...oor outdoor controller board 4 Re check error by turning off power and on again P 35 Indoor outdoor unit communication error transmitting error is detected by indoor unit E7 P 35 Indoor outdoor unit communication error signal receiving error is detected by outdoor unit P 35 E8 Indoor outdoor unit communication error transmitting error is detected by outdoor unit P 35 E9 3 blinking Remote controlle...

Page 64: ...bnormality of heat sink temperature U5 1 Check if indoor outdoor units have a short cycle on their air ducts 2 Measure resistance value of outdoor thermistor TH8 P 31 7 blinking Abnormality of voltage U9 1 Check looseness disconnection and converse connection of compressor wiring 2 Measure resistance value among terminals on compressor using a tester 3 Check if power supply voltage decreases 4 Che...

Page 65: ...played when compressor stops due to the work of protection devices Display Contents to be inspected When power is turned on F5 E8 E9 EA Eb EC E0 E7 63H connector yellow is open TRS connector is open Indoor outdoor communication error Signal receiving error Outdoor unit Indoor outdoor communication error Transmitting error Outdoor unit Miswiring of indoor outdoor unit connecting wire excessive numb...

Page 66: ...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 1 ON 2 3 4 5 6 Compressor operating current 0 to 50 LEV A opening pulse 0 to 480 0 to 50 Omit the figures after the decimal fractions 0 to 480 When it is 100 pulse or more hundreds digit tens digit and ones digit are displayed by turns Example W...

Page 67: ...it number and code 52 to 221 When the temperature is 100 C or more the hundreds digit tens digit and 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...

Page 68: ...ng only 0 Single phase 2 3 phase Setting details Defrosting switch Display details 0 Normal 1 For high humidity Example When heat pump 3 phase and defrosting normal are set up 20 is displayed 1 ON 2 3 4 5 6 1 ON 2 3 4 5 6 Indoor pipe temperature Cond Eva TH5 1 Indoor 1 39 to 88 39 to 88 When the temperature is 0 C or less and temperature are displayed by turns C 39 to 88 When the temperature is 0 ...

Page 69: ...splayed by turns 40 to 200 When the temperature is 0 C or less and temperature are displayed by turns When the thermistor detects 100 or more hundreds digit tens digit and ones digit are displayed by turns Outdoor Ambient temperature TH7 60 to 91 60 to 91 When the temperature is 0 C or less and temperature are displayed by turns Normal Overvoltage error Undervoltage error Input current sensor erro...

Page 70: ...tponement 00 is displayed in the case of no postponement Code display Error history 3 Oldest Alternate display of abnormal unit num ber and code When no error history 0 and are displayed by turns 3 Outdoor pipe temperature Liquid TH3 6 Outdoor pipe temperature 2 phase TH6 7 Outdoor ambient temperature TH7 8 Outdoor heat sink 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 the...

Page 71: ...0 to 91 When the temperature is 0 C or less and temperature are displayed by turns Example When 15 C 0 5 s 0 5 s 2 s Outdoor temperature Ambient TH7 on error occurring 60 to 91 60 to 91 When the temperature is 0 C or less and temperature are displayed by turns Example When 15 C 0 5 s 0 5 s 2 s Outdoor temperature Heat sink TH8 on error occurring 40 to 200 40 to 200 When the temperature is 0 C or l...

Page 72: ...itch position 1 ON 2 3 4 5 6 Outdoor temperature Comp Surface TH33 52 to 221 52 to 221 When the comp surface thermistor detects 100 C or more hundreds digit tens digit and ones digit are displayed by turns Example When 105 C 0 5 s 0 5 s 2 s 05 1 C Controlling status of compressor 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 ...

Page 73: ...e indoor units Initial setting Initial setting Initial setting 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 REMOT...

Page 74: ...rature Indoor unit Intake air temperature Measured by thermostat Indoor unit Intake air temperature Unit No 1 Heat mode 4 degree correction Indoor unit Intake air temperature Unit No 2 Heat mode 4 degree correction Indoor unit Intake air temperature Unit No 3 Heat mode 4 degree correction Indoor unit Intake air temperature Unit No 4 Heat mode 4 degree correction Indoor unit Liquid pipe temperature...

Page 75: ...nement history 1 latest Outdoor unit Error postponement history 2 previous Outdoor unit Error postponement history 3 last but one 0 255 0000 Not connected Examples Ver 5 01 Auxiliary information displayed after version information Examples Ver 5 01 A000 Displays postponement code is displayed if no postponement code is present Displays postponement code is displayed if no postponement code is pres...

Page 76: ...last Error history 3 third to last Abnormal thermistor display TH3 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 TH4 or comp surface temperature TH33 at time of error Outdoorunit Liquidpipe1temperature TH3 attimeoferror Outdo...

Page 77: ...oninformation Examples Ver 5 01 A000 A000 1 hour 10 hours Ver For indoor fan phase control 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 inform...

Page 78: ...de Display Operation mode 0 STOP FAN C COOL DRY H HEAT d DEFROST Relay output state Display Power currently Compressor Four way valve Solenoid valve supplied to compressor 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 ...

Page 79: ...splay SV1 Four way valve Compressor 0 1 2 3 4 5 6 7 8 9 A b C d E F ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON Actuator output state 2 Display 52C SV2 SS 0 1 2 3 4 5 6 7 ON ON ON ON ON ON ON ON ON ON ON ON Error content U9 Request code 55 Data display Error content 1 Error content 2 0 0 Error content 1 Detected Display Overvoltage Undervoltage L...

Page 80: ...pacity setting display Request code 70 Data display Capacity 10 50 9 35 11 60 14 71 20 100 25 125 28 140 40 200 50 250 Outdoor unit Setting information Request code 71 Data display Setting information 1 Setting information 2 0 0 Setting information 1 Display Defrost mode 0 Standard 1 For high humidity Setting information 2 Display Single Heat pump 3 phase cooling only 0 Single phase Heat pump 1 Co...

Page 81: ...16 11 125 02 22 12 140 03 25 13 160 04 28 14 200 05 32 15 224 06 35 36 16 250 07 40 17 280 08 45 18 09 50 19 0A 56 1A 0b 63 1b 0C 71 1C 0d 80 1d 0E 90 1E 0F 100 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 82: ...y remote controller Furthermore use of maintenance stable operation control that fixes the operating frequency allows smooth inspection even for inverter models 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 informati...

Page 83: ... heat exchanger temperature 7 Indoor intake air temperature Cool Classification Item Result Inspection Temperature difference Heat Inspection Temperature difference Stable Unstable Stable Unstable Notes Fixed Hz operation may not be possible under the following tempera ture ranges A In cool mode outdoor intake air temperature is 40 or higher or indoor intake air temperature is 23 or lower B In hea...

Page 84: ...w of nut 1 for front M6 then slide the propeller fan forward to remove it For the each fan motor on top and under 4 Disconnect the connectors CNF1 WH and CNF2 WH on the controller circuit board in the electrical parts box See Photo 4 5 Loosen the clamp for the lead wire on motor support and separator 6 Release the lead wire from the hole on separator 7 Remove the fan motor fixing screws 4 for fron...

Page 85: ... LEV A LEV B 6 Loosen the clamps fasteners and cable strap for the lead wire in the electrical parts box and separator 7 Loosen the lead wires fixed to the pipes with bands 8 To disconnect the COMP lead wire remove the terminal cover then remove the COMP lead wire fixing screws 3 for front 5 x 12 9 Remove the electrical parts box fixing screws 2 for front 4 x 10 then slide the electrical parts box...

Page 86: ...parts box must be separated from the outdoor unit Note When reassembling the electrical parts box make sure the wirings are correct Photo 5 Photo 6 Photo 7 Photo 8 Photo 9 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 connector TH7 6 RD on the controller circuit board in the electrical parts box See Photo 4 4 L...

Page 87: ...l protector TRS 1 Remove the service panel See Photo 1 2 Disconnect the connector TH3 WH TH4 WH and TH33 YE on the controller circuit board in the electrical parts box See Photo 4 3 Loosen the fastener cable strap and band for the lead wire on the controller circuit board in the electrical parts box 4 Loosen the clamp for the lead wire on separator 5 Pull out the thermistor Liquid TH3 from thermis...

Page 88: ... 4 Remove the valve bed See Photo 14 5 Remove the side panel R 6 Recover refrigerant Removing the 4 way valve 7 Remove the 4 way valve coil See photo 13 8 Remove the welded part of 4 way valve 4 positions to remove the 4 way valve Removing the LEV 7 Remove the LEV coil See photo 13 8 Remove the welded part of LEV 2 positions to remove the LEV Removing the high pressure switch 7 Disconnect the lead...

Page 89: ...thout spreading it in the air Note 2 The compressor can be easily removed by remov ing separator Photo 14 11 Removing the power receiver 1 Remove the electrical parts box See photo 4 2 Remove the cover panel front See Photo 1 3 Remove the cover panel rear See Photo 1 4 Remove the ball valve fixing screws 2 for front 5x16 See Photo14 5 Remove the stop valve fixing screws 2 for front 5x16 See Photo1...

Page 90: ...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 91: ...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 92: ... 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 93: ... 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 94: ...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 95: ...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 96: ...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 97: ...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 98: ...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 99: ...ormation 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 100: ...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 101: ...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 102: ... 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 15 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 103: ...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 104: ...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 105: ...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 106: ...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 107: ... 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 108: ...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 109: ...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 110: ...NET address B indoor unit and the number of blinks of the OPERATION INDICATOR lamp check is completed f 15 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 111: ...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 112: ... 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 113: ... 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 114: ...ICE TOKYO BUILDING 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN CCopyright 2021 MITSUBISHI ELECTRIC CORPORATION Published Sep 2021 No OCH775 Made in Japan Specifications are subject to change without notice ...

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Summary of Contents for PUZ-M200YKA2

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Mitsubishi Electric PUZ-M200YKA2, Service Manual, Page: 1 / 114

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