TECHNICAL & SERVICE MANUAL
Contents
1. 19 VIII Disassembly Procedure 1 Disassembly Procedure 22 AR SS A ceti mte E me ai iii e iii dii da iii 22 2 iraniana AO 23 3 IE 24 4 Thermistor Gas pipe Liquid pipe 25 A rep per deed 26 eu NE Ue Innen ee 27 fils i re 28 HWE07120 GB HWE07120 GB I Features 1 Features Model Cooling capacity Heating capacity kW PEFY P15VMS1 L E 1 7 1 9 PEFY P20VMS1 L E 2 2 2 5 PEFY P25VMS1 L E 2 8 3 2 PEFY P32VMS1 L E 3 6 4 0 PEFY P40VMS1 L E 4 5 5 0 PEFY P50VMS1 L E 5 6 6 3 PEFY P63VMS1 L E 7 1 8 0 HWE07120 GB Components and Functions 1 Components and Functions 1 Indoor Main Unit A Air 2 Remote Controller PAR 21MAA Once the operation mode is selected the unit will remain in the selected mode until changed 1 Remote Controller Buttons Za MITSUBISHI ELECTRIC DON OFF e O BACK MONITOR SET 00 O 43 1 Set Temperature Button 7 Vane Control Button 2 Timer Menu Button 8 Ventilation Button Monitor Set Button Operation Button 3 Mode Button 9 Check Clear2. E model has 4 fans 79 1 ST 5 Hyi _ rq o c g 8811 RS SR STK Joop sseooy Build uey ao gt Ss SS 5 5 52 25 lt lt 0550 KX 001 tol d ed gt is ne S n wwo uey alo a no A SL a e e QS a ste a e 9 99 RR 500 H Jenno ic AV pe OK 2 ar 5 RR XX 495 lt gt X e x 001 1 1 ae EX RAILS 1 3 x 001 Gong a d youd uoisuadsns g 552 OS I 2552 52 o lt lt RX 2 RL S P x aa Sc P15 32VMS1L E model have 2 fans The PEFY P63VMS1L 4 Toconnectan intake duct uninstall the air filter on the unit and install a locally procured air filter on the intake Provide an access door for maintenance at the bottom Space required for service and maintenance duct on the intake side 3 The dimensions in the table are those of the 40 50VMS1L E models which have 3 fans The PEFY 2 Provide an
3. 9000 90 0 000 0000 gno 2 1177692 ek lipezt vez 7 17 11 Lx ARS 5 ae en ea ES ME i n 1 pay ZENO O9ND JE A mnoo Ama e i 3sM3 08NZ nove oicoa n 06NO eng 6 Y ZOUNZ zan 8 veno vsa W2No jalo Jove Lz YAS EMS vezi ezasrezi 5 gl V Wiring Diagram 1 Wiring Diagram PEFY P15 20 25 32 40 50 63VMS1 L E 1 HWE07120 V Wiring Diagram Table 1 SYMBOL EXPLANATION SYM NAME SYM NAME SYM NAME BOL BOL BOL I B Indoor control board CN32 Connector Remote switch SW4 Switch function setting 1 B A B Address board CN41 Connector HA terminal A SWE Connector emergency opera 1 B tion TB2 Power supply terminal block CN51 Connector Centralized con Sw1 Switch function setting trol A B TB5 Transmission terminal block CN52 Connector Remote display SW11 Switch For setting the 1 s digit A B in the address TB15 Transmission terminal block 90 Connector Wireless SW12 Switch For setting the 10 s A B digit in the address FUSE Fuse AC 250V 6 3A FS Float switch SW14 Switch connection No set A B ting ZNRO1 Varistor TH21 Thermistor inlet air SWA Switch static pressure set 02 A B ting DSA
4. WARNING Ask your dealer or a qualified technician to install the unit Improper installation by the user may result in water leak age electric shock or fire Properly install the unit on a surface that can withstand its weight Do not make any modifications or alterations to the unit Consult your dealer for repair Improper repair may result in water leakage electric shock or fire Do not touch the heat exchanger fins with bare hands Unit installed on an unstable surface may fall and cause in jury The fins are sharp and pose a risk of cuts Only use specified cables Securely connect each cable so that the terminals do not carry the weight of the cable In the event of a refrigerant leak thoroughly ventilate the room Improperly connected cables may produce heat and start fire If gaseous refrigerant leaks out and comes in contact with an open flame toxic gases will be generated Take appropriate safety measures against wind gusts and earthquakes to prevent the unit from toppling over Properly install the unit according to the instructions in the Installation Manual Improper installation may cause the unit to topple over and cause injury or damage to the unit Improper installation may result in water leakage electric shock or fire Only use accessories i e air cleaners humidifiers electric heaters recommended by M
5. Replace the motor Are OVDC and 15VDC displayed alternately Replace the indoor control board HWE07120 16 VIT Troubleshooting 3 Address switch setting Make sure that power to the unit is turned off SW3 SW4 SW2 PE OTTO E 1 eer 1 gn gn HOOGA mama OFFIB 1 12345678910 9 100M fiz 10M ti 10 OOO Swi2 B7FvA SMI A Indoor unit control board B Factory setting all models 1 When using ME remote controller set the address with the rotary switches SW11 SW12 Address setting is not required when the unit remote controller is used On site address setting is required for the indoor units to run 2 Address settings vary in different systems Refer to the section on address setting in the outdoor unit installation manual 3 Address is set with a combination of SW12 10 s digit and SW11 1 s digit To set the address to 3 set SW12 to 0 and SW11 to 3 To set the address to 25 set SW 12 to 2 and SW 11 to 5 HWE07120 47 VIT Troubleshooting 4 Voltage test points on the control board 1
6. P32VMS1 L E Power supply Voltage V 220 240 Frequency Hz 50 60 Cooling capacity kW 17 22 2 8 3 6 Heating capacity kW 1 9 2 5 32 4 0 Power consumption Cooling kW 0 05 0 05 0 05 0 05 0 06 0 06 0 07 0 07 Heating kW 0 03 0 03 0 03 0 03 0 04 0 04 0 05 0 05 Current consumption Cooling A 0 42 0 42 0 47 0 47 0 50 0 50 0 50 0 50 Heating A 0 31 0 31 0 36 0 36 0 39 0 39 0 39 0 39 External finish Munsel No Galvanized Dimensions Height mm 200 Width mm 700 Depth mm 700 Net weight 2 kg 19 18 20 19 Heat exchanger Cross fin Aluminium fin and cupper tube Fan Type Sirocco fan x 2 Airflow rate m3 min 5 0 6 0 7 0 5 5 6 5 8 0 5 5 7 0 9 0 6 0 8 0 10 0 Low Mid High External static Pa 5 15 35 50 5 15 35 50 5 15 35 50 5 15 35 50 pressure Motor Output kW 0 096 Air filter PP Honeycomb fabric washable Refrigerant pipe di Gas Brazed mm 212 7 21 2 mensions R410A connection in Liquid Brazed mm 26 35 21 4 connection in Refrigerant pipe di Gas Brazed mm 212 7 21 2 mensions R22 connection in Liquid Brazed mm 26 35 21 4 connection in Drain pipe dimensions mm 32 1 9 32 in Operating noise dB 22 24 26 22 25 28 23 25 29 24 27 30 Low Mid High 15Pa 22 24 28 22 25 29 24 26 30 24 27 32 35Pa 24 26 29 25 27 30 25 28 31 25 28 33 50Pa 24 27 30 25 28 32 25 29 33 25 29 34 HWE07120 1 Cooling Indoor temperature 27 CDB 19 CWB 81 FDB 66 FWB Outdoor temperature 35 CDB 95 FD
7. in Drain pipe dimensions cal O D 32 1 9 32 in Operating noise 5Pa dB A 26 29 32 29 31 34 29 32 35 db 15Pa 28 30 33 30 32 35 30 33 36 35Pa 30 32 35 31 34 37 31 35 39 50Pa 31 33 36 32 34 38 32 36 40 1 Cooling Indoor temperature 27 CDB 19 CWB 81 FDB 66 FWB Outdoor temperature 35 CDB 95 FDB Heating Indoor temperature 20 CDB 68 FDB Outdoor temperature 7 CDB 6 CWB 45 FDB 43 FWB 2 Figures in the parentheses indicate the weight of drainpump less units L HWE07120 5 GB III Specfications 2 Electrical component specifications Component Sym PEFY PEFY PEFY PEFY bol P15VMS1 L E P20VMS1 L E P25VMS1 L E P32VMS1 L E Room temperature TH21 ihaiisibr Resistance 0 C 15k Q 10 C 9 6kQ 20 C 6 3kQ 25 5 4 30 C 4 3kQ 40 3 0 Liquid pipe thermistor 22 Resistance 0 C 15k 10 C 9 6k 2 20 C 6 3kQ 25 C 5 4kQ 30 C 4 3kQ 40 3 0 Gas pipe thermistor TH23 Resistance 0 C 15k 10 C 9 6kQ 20 C 6 3k 2 25 C 5 4kQ 30 C 4 3kQ 40 3 0 Fuse FUSE 250V 6 3A Fan motor 8 pole Output 96W SIC 70CW D81 14 1 Linear expansion valve LEV 12VDC Stepping motor drive port diameter 23 2 0 2000 pulse Power supply terminal TB2 block L N 330V 30A Transmission terminal TB5 1 2 M1 M2 S 250V 20A block TB15 Drain float switch DS Open short detection I
8. Button Back Button 10 Test Run Button 4 Timer On Off Button 11 Filter Button Set Day Button Button 5 Louver Button 12 ON OFF Button Operation Button 13 Position of built in room thermistor 6 Fan Speed Button 14 Set Time Button Keep the remote controller out of direct sunlight to ensure accurate measurement of room temperature The thermistor at the lower right hand section of the remote controller must be free from obstructions to ensure accurate mea surement of room temperature HWE07120 2 GB Components and Functions 2 Remote Controller Display m oou gt HWE07120 a MITSUBISHI ELECTRIC TIME SUN WED THU FRI SAT TIMER 1 arter ap SER LINI on vii 472 385 ji TEMP ON OFF G N H J D Current time Timer time Centralized control indicator Timer OFF indicator Timer mode Operation mode display zt COOL DRY _JAUTO XY HEAT Function Lock indicator Preset temperature Power indicator 2 Louver swing Ventilation Filter sign Sensor position Room temperature Vane setting Fan speed GB III Specfications 1 Specifications 1 Specfications Model PEFY PEFY PEFY PEFY P15VMS1 L E P20VMS1 L E P25VMS1 L E
9. L E PEFY P32VMS1 L E ON BB ON A on E BH ON EH OFF OFFRE BEEN OFF 123456 123456 123456 123456 PEFY P40VMS1 L E PEFY P50VMS1 L E PEFY P63VMS1 L E ON A ON E EM NEN orFFBENB Wi orrM NB NN OFF M 123456 123456 123456 3 Model setting 1 SWA 1 Indoor control board Dipswitch settings must be made while the unit is stopped Factory setting M OFFRE 12345 Changes made to the dipswitches SW1 SW2 SW3 will become effective when the unit comes to a stop remote controller off There is no need to power cycle the unit 4 External static pressure 1 SWA SWC 1 Address board models Factory 5Pa 15Pa 35Pa 50Pa setting 3 m er m 7 3 42 3 272 2 2 2 2 2 1 1 OR 4 OR 1 OR 1 OR SWA SWA SWC SWA SWC SWA SWC SWA SWC A B Note B 0 Option Standard A Oxr7 SWC Changes that are made to the dipswitches SWA and SWC immediately become effective regardless of the unit s operation status RUN STOP or the remote controller status ON OFF 5 15 10 s digits 1 SW1
10. PEFY P15 20 25 32 40 50 63VMS1 L E Fuse m C25 1 gt o a g gt SWE SW2 sw4 LED2 CN3A HWE07120 CNMF 4 C951 1 18 4 8 PC941 1 vo LI Fuse CND CN2M SWE SW2 SW4 CN42 SW3 CN81 CN32 CN3A CN52 51 41 44 CN4F CN20 CN3C CNMF CNP 1 Vsp Fuse AC 250V 6 3A Power supply voltage 220 240VAC For M NET transmission cable connection 24 30VDC Emergency operation Capacity setting Function setting For address board connection Function setting For address board connection Remote start stop adapter For MA remote controller cable connection 10 13 VDC Between 1 and 3 Remote display Centralized control JAMA standard HA terminal A Thermistor liquid gas tempera ture Float thermistor Thermistor Inlet temperature Indoor outdoor transmission 0 24VDC Fan motor output 1 4 310 340 VDC 5 4 15 VDC 6 4 0 6 5 VDC 7 4 StopO or 15 VDC Run 7 5 VDC 0 15 pulse Drain up mechanism output 200VAC Voltage on the side of PC941 and C25 Same with the voltage between 7 and 4 of CNMF Voltage between the C25 pins 15 VDC Same with the voltage between 5 and 4 of CNMF Voltage between the C951 pins OVDC with the fan stopped 1 6 5VDC with the fan in opera tion Same with the voltage between 6 and 4 of CNM
11. the refrigerator oil to deteriorate or cause the compressor to malfunction Use a small amount of ester oil ether oil or alkyl benzene to coat flares and flanges Infiltration of a large amount of mineral oil may cause the re frigerator oil to deteriorate Charge the system with refrigerant in the liquid phase If gaseous refrigerant is drawn out of the cylinder first the composition of the remaining refrigerant in the cylinder will change and become unsuitable for use HWE07120 The use of other types of refrigerant that contain chloride may cause the refrigerator oil to deteriorate Use a vacuum pump with a check valve If a vacuum pump that is not equipped with a check valve is used the vacuum pump oil may flow into the refrigerant cy cle and cause the refrigerator oil to deteriorate Prepare tools for exclusive use with R 410A Do not use the following tools if they have been used with the conventional refrigerant gauge manifold charging hose gas leak detec tor check valve refrigerant charge base vacuum gauge and refrigerant recovery equipment If the refrigerant or the refrigerator oil that may be left on these tools are mixed in with R410A it may cause the refrigerator oil in the new system to deteriorate Infiltration of water may cause the refrigerator oil to deteriorate Leak detectors for conventional refrigerants will not detect an R410A leak because R410A
12. 1 SW12 Rotary switch The use of a network remote controller PAR F27MEA requires address setting 1 Address board Address settings must be made while the unit is stopped Factory setting su SW11 AY 7 AY 73 v B Co 5 954 10 1 DI E 18 HWE07120 20 GB VIT Troubleshooting 6 Connection No setting 1 SW14 Rotary switch This switch is used when the unit connected to an R2 series of outdoor unit 1 Address board Factory setting 107 SDE Note Changes to the dipswitches SW11 SW12 SW14 and SW15 must be made while the unit is stopped and the remote controller is OFF HWE07120 21 GB VIII Disassembly Procedure 1 Disassembly Procedure 1 Control box Exercise caution when removing heavy parts 1 Removing the control box cover 1 Remove the two fixing screws on the cover A to remove it Fig 1 Fig 2 HWEO07120 LODI GB VIII Disassembly Procedure 2 Thermistor Intake air Exercise caution when removing heavy parts 1 Remove the control box cover according to the procedure in section 1 2 Remove the thermistor 1 Remove the two fixing screws on the metal base B to re move it Fig 3 2 Pull out the thermistor holder C and thermistor D on the control box Fig 4 HWE07120 23 GB VIII Disassembly Procedure 3 Drainpan Exercise caution when removing heavy parts 1 Removing t
13. 2007 07120 New publication effective Aug 2007 Printed in Japan Specifications subject to change without notice
14. 90L B6LL ZSLL OOLL S3 LSWA 9d Ad3d cS 660 8865 9 2 toe ag FL SLO Dp S LSWAOSd AJ3d 992 209 1 oz oo 2 098 000 008 6 098 966 256 006 3 LSIWAOFd Ad3d geod Lae yun 100 zzs 2 0VWZ 91 006 S 099 008 009 2 099 862 257 002 3 LSWAZE SZ OZ SL d AJ3d yun Joopyno edid sddsego 1 M H 19 3 a 9 v IPON 526 uonoeuuoo BurzeJq Buidid 1 6e cxz 8 gt 5 8 Ha 951105 9 04 OU0D dunduieig pinbij 2810 9 r juesabLyay 1 asoy uo ssiuusue La a104 PIS 0e CPF to 44 5 TE Tz Spi inoxpouy ajoy yoq uoisuadsns a JO youd y0q uorsuedsng szo a f uiid ye 3 Bue jenjov E plo 5 pl 67 Ye SIS 1 1 Hi di i g ca uiuigoe uey 5591 gt O in i PA 5 E E i i J SS TT 8 Joop sseooy eoeyns S 3 E 5 2 8 mno 9 2 JV Slo e o i 8 be i c o IM iJ Xx hr E 5 8 A m y M loz A les H Loo i SL 02 Space required for service and maintenance A Provide an access door for maintenance at the bottom B 1 Use M10 suspension bolts not supplied Note 2 Provide an access door for maintenance at the bott
15. Arrester TH22 Thermistor liquid pipe SWB Switch function setting A B X1 Aux relay TH23 Thermistor gas pipe SWC Switch static pressure set ting L1 AC reactor Power factor im SW2 Switch capacity code setting provement 1 B CN27 Connector Damper SW3 Switch function setting 1 B Note 1 Wiring to TB2 TB5 and 15 indicated by the double dashed lines is on site work 2 terminal block connector HWE07120 10 GB VI Refrigerant System Diagram 1 Refrigerant system diagram A B lt G D H NE F x d E E A Gas pipe thermistor TH23 B Gas pipe C Liquid pipe D Brazed connections E Strainer 100 mesh F Linear expansion valve G Liquid pipe thermistor TH22 H Heat exchanger I Room temperature thermistor TH21 Capacity PEFY P15 20 25 32 40VMS1 L E PEFY P50VMS1 L E PEFY P63VMS1 L E Gas pipe 012 7 1 2 R410A 212 7 1 2 015 88 5 8 R22 915 88 5 8 R22 99 52 3 8 Liquid pipe 26 35 1 4 R410A 06 35 1 4 29 52 3 8 HWE07120 11 VIT Troubleshooting 1 Troubleshooting 1 Check methods 1 Component and check points 1 Thermistor Room temperature thermistor TH21 Liquid pipe thermistor TH22 Gas pipe thermistor TH23 Disconnect the connector and measure the resistance between terminals with a tester Ambient temperature 10 C 30 C Normal Abnorm
16. B Heating Indoor temperature 20 CDB 68 FDB Outdoor temperature 7 CDB 6 CWB 45 FDB 43 FWB 2 Figures in the parentheses indicate the weight of drainpump less units L GB III Specfications Model PEFY P40VMS1 L E PEFY P50VMS1 L E PEFY P63VMS1 L E Power supply Voltage V 220 240 Frequency Hz 50 60 Cooling capacity kW 4 5 5 6 7 1 Heating capacity 1 kW 5 0 6 3 8 0 Power consumption Cooling kW 0 07 0 07 0 09 0 09 0 09 0 09 Heating kW 0 05 0 05 0 07 0 07 0 07 0 07 Current consumption Cooling A 0 56 0 56 0 67 0 67 0 72 0 72 Heating A 0 45 0 45 0 56 0 56 0 61 0 61 External finish Munsel No Galvanized Dimensions Height mm 200 Width mm 900 1100 Depth mm 700 Net weight 2 kg 24 23 28 27 Heat exchanger Cross fin Aluminium fin and cupper tube Fan Type Sirocco fan x 3 Sirocco fan x 4 Airflow rate m min 8 0 9 5 11 0 9 5 11 0 13 0 12 0 14 0 16 5 Low Mid High External static Pa 5 15 35 50 5 15 35 50 5 15 35 50 pressure Motor Output kW 0 096 Air filter Honeycomb fabric washable Refrigerant pipe di Gas Brazed mm 212 7 21 2 215 88 95 8 mensions R410A connection in Liquid Brazed mm 26 35 21 4 29 52 23 8 connection in Refrigerant pipe di Gas Brazed mm 212 7 91 2 215 88 25 8 mensions R22 connection in Liquid Brazed mm 06 35 01 41 09 52 03 8 connection
17. Changes for the Better e 2007 Air Conditioners TECHNICAL amp SERVICE MANUAL we PEFY P15VMS1 L E PEFY P40VMS1 L E PEFY P20VMS1 L E PEFY P50VMS1 L E PEFY P25VMS1 L E PEFY P63VMS1 L E PEFY P32VMS1 L E CITY MULTI For use with R410A R407C amp R22 Safety Precautions Read before installation and performing electrical work Thoroughly read the following safety precautions prior to installation these safety precautions for your safety This equipment may have adverse effects on the equipment on the same power supply system Contact the local power authority before connecting to the system Symbol explanations N WARNING This symbol indicates that failure to follow the instructions exactly as stated poses the risk of serious injury or death CAUTION This symbol indicates that failure to follow the instructions exactly as stated poses the risk of serious injury or dam age to the unit Indicates an action that must be avoided Indicates important instructions Indicates a parts that requires grounding gt gt ee unit label lt Color Yellow gt Indicates that caution must be taken with rotating parts This symbol is on the main unit label lt Color Yellow gt Indicates that the parts that are marked with this symbol pose a risk of electric shock This symbol is on the main N WARNING Carefully read the labels affixed to the main unit
18. F GB VII Troubleshooting 5 Dipswitch setting Factory setting 1 Function setting 1 SW1 Switch position Function Switch setting ON OFF mistor controller 2 Filter clogging detection Available Unavailable 3 Filter life 2500 hr 100 hr 4 Outdoor air intake Enabled Disabled 5 Remote display Thermo ON signal Fan output 6 Humidifier operation During heating mode During heating operation 7 Fan speed Low Very low 8 Fan speed at heating Thermo OFF Preset fan speed Follows the setting of SW1 7 9 Auto restart after power failure Enabled Disabled 10 Power start stop Enabled Disabled 1 Adress board Factory setting ON O OFFRE 12345678910 2 SW3 Switch position Function Switch setting ON OFF Cooingony Hetpum 2 E 3 z z 4 5 z 6 2 7 z 8 Heating 4 deg up Disabled Enabled 1 Indoor control board Dipswitch settings must be made while the unit is stopped Factory setting ON orrEBEBBBEEBEEN 12345678910 HWE07120 19 GB VIT Troubleshooting 2 Capacity code setting 1 SW2 1 Indoor control board Dipswitch settings must be made while the unit is stopped Factory setting The switches are set to correspond to the unit capacity PEFY P15VMS1 L E PEFY P20VMS1 L E PEFY P25VMS1
19. access door for maintenance at the bottom 1 Use M10 suspension bolts not supplied B Note A HWE07120 3 LSWA d A33d 404 GB a Seisd ue Mud 33 TIOMINOO 1 DD ES S4 cHL YATIONLNOOD YATIONLNOO 28 w N Lalla N 3LONSYYNOL LINNYOOCINO OL 1 ser 2 09 08 ud E 2062022 leal MIEL E CR AA AlddNs HIMOd EN rd a s L uBip 5 01 aer LIMS ZIMS 286v v8 9 v8 9 v91 u3xv3ug one TE De i 2793 V6 6 VI 6 vot 3sna ero 3T SWA d A33d YOA 8 AMS YMS LMS e 1 3 i i av lINQHOOQNIIX3NOL o ana
20. al 4 3kQ 9 6 Open or short Refer to the thermistor characteristic graph below 1 Thermistor characteristic graph Low temperature thermistor Room temperature thermistor 21 Liquid pipe thermistor TH22 50 Gas pipe thermistor TH23 Drain sensor DS Thermistor Ry 15 kC 2 396 40 Multiplier of B 3480 kQ 2 Rt 15exp 3480 1___1 273 t 273 30 0 C 15kQ a 10 C 9 6 20 6 3k 2 20 25 5 2kQ 30 C 4 3kQ 40 C 3 0kQ A Temperature C 10 Resistance 20 10 0 10 20 30 40 50 2 Fan motor Refer to the page on DC fan motor fan motor indoor control board 3 Linear expansion valve Disconnect the connector and measure the resistance between terminals with a tester Refer to the next page for details CNSO Abnormal 1 1 5 2 6 3 5 4 6 Open or short White Red Yellow Brown Orange Red Blue Brown 4 E 200 10 6 A Brown D Orange B Red E Yellow C Blue F White HWE07120 12 VIT Troubleshooting 1 Summary of linear expansion valve LEV operation LEV is ope
21. alve closure fail ure leaky valve To check the LEV on the indoor unit check the indoor unit liquid pipe temperature that appears on the operation monitor on the outdoor unit s multi control board while operating the indoor unit in question in the FAN mode and the other indoor units in the cooling mode A Termistor TH21 A LEV Normally the LEV is fully closed while the unit is in the FAN mode If the valve is leaky liquid pipe thermistor reading will be lower than normal If it is significantly lower than the inlet temperature on the remote controller valve closure failure is suspected If the amount of leakage is insignificant replacement of LEV is unnec essary unless it is causing a problem Replace the LEV if the amount of leak age is great Misconnections of connectors or con tact failure Perform a visual check for disconnected connectors Perform a visual check of lead wire color Disconnect the con nectors on the con trol board and perform a continuity test 4 Drain up mechanism Measure the resistance between the terminals with a tester coil temperature 20 Normal Abnormal 340 2 Open or short 5 Drain float switch CN4F Disconnect the connector and measure the resistance between terminals with a tester A Moving part B Switch B C Magnet A Position of the moving part Normal Abnormal Up Short any positi
22. eak If leaked refrigerant is exposed to a heat source such as a fan heater stove or electric grill toxic gases will be gener ated Do not try to defeat the safety features of the unit Forced operation of the pressure switch or the temperature Switch by defeating the safety features for these devices or the use of accessories other than the ones that are recom mended by Mitsubishi Electric may result in smoke fire or explosion Consult your dealer for proper disposal method Do not use a leak detection additive Precautions for handling units for use with R410A CAUTION Do not use the existing refrigerant piping Only use R410A A large amount of chlorine that may be contained in the re sidual refrigerant and refrigerator oil in the existing piping may cause the refrigerator oil in the new unit to deteriorate Use refrigerant piping materials made of phosphorus deox idized copper Keep the inner and outer surfaces of the pipes clean and free of such contaminants as sulfur oxides dust dirt shaving particles oil and moisture Contaminants in the refrigerant piping may cause the refrig erator oil to deteriorate Store the piping materials indoors and keep both ends of the pipes sealed until immediately before brazing Keep el bows and other joints wrapped in plastic Infiltration of dust dirt or water into the refrigerant system may cause
23. emove the two fixing screws on the punching metal K to remove it 3 Removing the fan casing bottom half 1 Squeeze the tabs on the fan casing to remove it in the di rection of arrow 2 Fig 11 4 Removing the motor cable 1 Remove the motor cable threw the rubber bush 5 Removing the fan motor and the Sirocco fan 1 Remove the two motor fixing screws to remove the motor and the Sirocco fan in the direction of arrow 3 Fig 12 2 Remove the four fan case fixing screws to take the top half of the fan casing off HWEO07120 26 VIII Disassembly Procedure 6 Bearing P40 P50 P63 models only Exercise caution when removing heavy parts 1 Removeing the bearing 1 Remove the two fixing screws on the bearing cover M to remove it 2 Remove the two bearing retainer screws to remove the bearing HWE07120 227 Fig 14 Fig 15 GB VIII Disassembly Procedure 7 Heat exchanger Exercise caution when removing heavy parts 1 Remove the drain pan according to the procedure in section 1 2 Remove the heat exchanger cover according to the proce dure in section 4 2 Removing the cover 1 Remove the two fixing screws on the cover T to remove it 4 Removing the Heat exchanger 1 Remove the fixing screws on the heat exchanger S to re move it HWE07120 28 Fig 16 T Pipe support plate Fig 17 GB MITSUBISHI ELECTRIC CORPORATION Aug
24. he filter and the bottom plate 1 Push down the tab on the filter and pull out the filter in the direction of the arrow 1 2 Remove the fixing screws on the bottom plate D E to remove it 2 Removing the drainpan 1 Pull out the drain pan in the direction of the arrow 1 Note Drain the water out of the drain pan before removing it To avoid dew condensation use insulated screws in the places marked with circles in Figure 7 HWE07120 24 Fig 5 Fig 6 E Fig 7 a Insulation material GB VIII Disassembly Procedure 4 Thermistor Gas pipe Liquid pipe Exercise caution when removing heavy parts 1 Remove the drain pan according to the procedure in sec tion 1 2 Removing the Heat exchanger cover 1 Remove the four fixing screws on the heat exchanger cov er F to remove it Fig 8 3 Removing the thermistor 1 Remove the thermistor G from the thermistor holder H on the copper tube Thermistor size Liquid pipe Gas pipe Fig 9 HWE07120 25 GB VIII Disassembly Procedure 5 Fan and fan motor Exercise caution when removing heavy parts 1 Removing the filter and the bottom plate 1 Push down the tab on the filter and pull out the filter in the direction of the arrow 1 2 Remove the fixing screws on the bottom plate J to re move it Fig 10 a Tab 2 Removing the punching metal 1 R
25. is free of chlorine Do not use a charging cylinder If a charging cylinder is used the composition of the refrigerant in the cylinder will change and become unsuitable for use Exercise special care when handling tools for use with R410A Infiltration of dust dirt or water into the refrigerant system may cause the refrigerator oil to deteriorate GB CONTENTS Features 00d ti tea e AAA A AA o dee dE 1 Components and Functions 1 Components and Annsan EEE 2 Specfications 1 SPECiiCAtlONS eS 4 1 A tai beled eis aed ei ede eine eee 4 2 Electrical component specifications 6 TV Outlines and Dimensions 1 Outlines and 7 V Wiring Diagram 1 Wiring Diagram asia 9 VI Refrigerant System Diagram 1 Refrigerant system 2 4 22 2 2 140 22 000 00 ins 11 VII Troubleshooting 1 Troubleshooting ic oii 2t dt ea aae A A ted ede ei eoa eee oos 12 AGheck methods tocada e t to Ue d 12 2 DC fan motor fan motor indoor control 16 a Address S Witch setting ertet ar p y ME IRE RR Yd 17 4 Voltage test points on the control board 18 5 Dipswitch setting Factory
26. itsubishi Electric Have all electrical work performed by an authorized electri cian according to the local regulations and the instructions in this manual Use a dedicated circuit HWE07120 Insufficient power supply capacity or improper installation of the unit may result in malfunctions of the unit electric shock or fire GB N WARNING Keep electrical parts away from water Wet electrical parts pose a risk of electric shock smoke or fire Securely attach the control box cover If the cover is not installed properly dust or water may infil trate and pose a risk of electric shock smoke or fire Only use the type of refrigerant that is indicated on the unit when installing or relocating the unit Infiltration of any othertypes of refrigerant or air into the unit may adversely affect the refrigerant cycle and may cause the pipes to burst or explode When installing the unit in a small space take appropriate precautions to prevent leaked refrigerant from reaching the limiting concentration Leaked refrigerant gas will displace oxygen and may cause oxygen starvation Consult your dealer before installing the unit Consult your dealer or a qualified technician when moving or reinstalling the unit Improper installation may result in water leakage electric shock or fire After completing the service work check for a refrigerant l
27. nitial contact resistance 500 mQ or less Component Sym PEFY P40VMS1 L E PEFY P50VMS1 L E PEFY P63VMS1 L E bol 21 Resistance 0 C 15k Q 10 9 6 20 C 6 3kQ 25 C 5 4kQ 30 C 4 3kQ 40 C 3 0kQ Liquid pipe thermistor TH22 Resistance 0 C 15k Q 10 C 9 6kQ 20 C 6 3k 2 25 C 5 4kQ 30 4 3 40 C 3 0kQ Gas pipe thermistor 23 Resistance 0 C 15k Q 10 C 9 6k 2 20 C 6 3kQ 25 C 5 4kQ 30 C 4 3kQ 40 C 3 0kQ Fuse FUSE 250V 6 3A Fan motor 8 pole Output 96W SIC 70CW D896 2 Linear expansion valve LEV 12VDC Stepping motor drive port diameter 23 2 0 2000 pulse Power supply terminal TB2 block L 330V 30A Transmission terminal TB5 EIER TBAS 1 2 M1 M2 S 250V 20A Drain float switch DS Open short detection Initial contact resistance 500 mQ or less HWE07120 6 GB GB Outlines and Dimensions Imensions 1 Outlines and D 1 PEFY P15 20 25 32 40 50 63VMS1 E Sc 6 885 9 Yz 006 6 090 10021 000 LL 0
28. om 3 The dimensions in the table are those of the PEFY P40 50VMS1 E models which have 3 fans The PEFY P15 32VMS1 E model have 2 fans The PEFY P63VMS1 E model has 4 fans 4 To connect an intake duct uninstall the air filter on the unit and install a locally procured air filter on the intake duct on the intake side HWE07120 2 PEFY P15 20 25 32 40 50 63VMS1L E Outlines and Dimensions GB 2960 88919 ve 006 6 0901 00ZL 000L LL 0901 8611 9 0011 3 II SWA 9d Ad3d 0269 898819 nio OR CA 3 II SWAO0Sd AJd3d geod ZIP 15 oz 002 098 000 008 6 098 866 296 006 A TLSWAOtd AsAd JUN JOOPINO ZZY OLOVY Z 9 005 9 099 008 009 099 867 292 002 3 1ILSWAZE SC OZ SL d Ad3d Joopino yoLpY L edid pinbn edid seo 1 M f H 9 3 9 8 V IPON snoguejuods 526 uonoeuuoo zt aoedd ued ozz TRO uoissiuusue jeuruue y Jamog x90 q ort su 626 zxz 001 sel ez OL pinbij 1015 0 X tb t 429 lez quelo UE joy uoisuadsns 007 youd yoq uorsuedsng szo 21 05 Jamog 1098104 jnoysouy uoissiuisuei 109804 jnoysouy
29. on but short Down Open any position but open HWE07120 15 GB VIT Troubleshooting 2 DC fan motor fan motor indoor control board 1 CAUTION A high voltage is applied to the connector for connection to the fan motor Do not unplug the connector CNMF with the unit energized to avoid damage to the indoor control board and fan motor 2 Troubleshooting Symptom Indoor unit fan does not run Check fan motor connector contact Is the fan motor connector No Fix the connection fully inserted Yes Check the power supply Measure the voltage at the indoor control board Vpc 310 340VDC same with the voltage between fan connector 1 and 4 Power supply voltage 220 311VDC 230VAC 325VDC 240VAC 340VDC Vcc 15VDC same with the voltage between fan connector 5 and 4 VsP 1 6 5VDC same with the voltage between fan connector 6 and 4 Values for Vsp are the values that are measured with the fan motor in operation Vsp is OV when the fan motor is stopped Replace the indoor control board Is the voltage within the normal range Check the fan motor position thermistor signal Get the motor to make a full rotation or more and measure the voltage at the test point same with the voltage between fan connector 7 4
30. rated by a stepping motor which operates by receiving a pulse signal from the indoor control board LEV position changes in response to the pulse signal Indoor control board and LEV connection A Brown B Red C Blue D Orange E Yellow Pulse signal output and valve operation F 6 H 1 J White 12VDC 6 Qi 0 o g 54 03 D A NI 02 Aa 22 oi F H Control board Connection CN60 Drive circuit Linear expansion valve Phase Output pulse number 1 2 3 4 01 ON OFF OFF ON 02 ON ON OFF OFF 03 OFF ON ON OFF 04 OFF OFF ON ON The output pulse changes in the following order When the valve closes 1 gt 2 gt 3 gt 4 gt 1 When the valve opens 4 gt 3 gt 2 gt 1 gt 4 When the valve position remains the same all output signals will be OFF If any output signal is missing or if the signal remains ON the motor vibrates and makes clicking noise HWE07120 43 GB VIT Troubleshooting 2 LEV operation a Close A b Open b Op c Fully open valve 2000 pulses d No of pulses va e Extra tightning 80 100 pulse f Valve opening degree c 2 When the power is turned a pulse signal of 2200 pulses is output valve closure signal to bring
31. the valve to position When the valve is operating normally it is free of vibration noise If the valve locks or when it goes from point E to A in the figure it makes louder noise than would be heard when there is an open phase Check for abnormal sound vibration by placing the metal tip of a screwdriver against the valve and the handle side against your ear 3 Troubleshooting Symptom Checking Criteria Remedy Circuit failure on the microcomputer Disconnect the connectors on the control board and connect LEDs to test the cir cuit as shown below Pulse signals are output for 10 seconds when the main power is turned on If there are LEDs that do not light up at all or remain lit after the pulses are turned off there is a problem with the driving circuit Replace the indoor control board if driv ing circuit failure is detected Locked LEV The motor will idle and make small clicking noise if it is run while the LEV is locked If this clicking noise is heard both when the valve is fully closed and while itis being opened it indicates a problem Replace the LEV Disconnected or shorted LEV motor coils easure the resistance between the coils with a tester red white red orange brown yellow brown blue The normal range of resistance is 150 22 1096 Replace the LEV HWE07120 14 GB VIT Troubleshooting Symptom Checking Criteria Remedy V
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