PEFY-P20VML-A PEFY-P25VML-A PEFY-P32VML
Contents
1. Transmission and reseption of unit remote controller SS SWC gute Standard Blink Blink Light up Light up LEDS Reception M NET transmission power source Light up DISASSEMBLY PROCEDURE 8 1 CONTROL BOX Be careful on removing heavy parts OPERATING PROCEDURE PHOTOS 1 Removing the control box cover 1 Remove the fixing screws two of the control box A and remove the cover Fig 1 At this stage the following servicing is possible Operation and check of the switches listed below which are on the control board e Dip switch SW2 Capacity code setting Dip switch SW3 Function change e Dip switch SW4 e Model code setting Operation and check of the switches listed below which are on the adress board e Rotary switches SW11 12 Address setting Rotary switch SW14 Branch port setting e Dip switch SVV1 e ee e Function change main fig 2 Connection check of the lead wires listed below which are connected to the controller board Power supply lead wire Network remote contoller transmission lead wire Fan motor lead wire LEV lead wire Intake air sensor lead wire Liquid piping sensor lead wire Gas piping sensor lead wire Power supply transformer lead wire e Address board lead wire Control board exchange Address board exchange Condenser exchange Power supply transformer exchan2. VV254613G03 jp EA 10 8 CN82 1 one 1 EE SW12 SVV11 240V 220V Refer to the next page for SW2 SW3 setting SH Vo SWA SWC d 1006 1012 HEZFYFLX MADE IN JAPAN 1 In case using network remote controller address is set by rotary switches SW11 SW12 t is not necessary setting address in case of using unit remote controller Indoor unit do not run without address setting in field 2 Indoor unit address setting rule is different by each field work Refer to install manual of outdoor unit operate the address setting 3 Setting the address is combination of SW11 1st digit address setting and SW12 2nd digit address setting Address 3 setting is composed SW11 3 and SVV12 0 Address 25 setting is composed SW11 5 and SW12 2 umm Gil 7 3 Setting of Dip svvitch at delivery SVV1 PEFY P20VML 9 Deel 12345678910 SVV1 PEFV P25VML O Deel 12345678910 SVV1 PEFY P32VML S 12345678910 7 4 Function the LED of the indoor unit service board ON F OFF 123456 ON OFF ON SW2 SW2 123456 SW2 F 123456 NAME LED1 Transmission of unit remote controller LED2 UR Transmission and reseption LEDS Power source supply indoor unit 200V LED4 5V power source suppl 13 ON 12345678910 SW3 ON OFF 12345678910 SW3 ON FF 12345678910 LED function in normal 220V OFF MM 240V SW5 ON _ 220V OFF EM 240V SW5 ON 1220V OFF EM 240V
3. refrigerant charge base vacuum gauge refriger ant recovery equipment f the conventional refrigerant and refrigerator oil are mixed in the R407C the refrigerant may deteriorated If water is mixed in the R407C the refrigerator oil may deteriorate Since R407C does not contain any chlorine gas leak detectors for conventional refrigerants will not react to it e Do not use a charging cylinder Using a charging cylinder may cause the refrigerant to deteriorate e Be especially careful when managing the tools If dust dirt or water gets in the refrigerant cycle the refrigerant may deteriorate 1 FEATURES Series PEFY Ceiling Concealed Indoor unit Models Cooling capacity Heating capacity kW PEFY P20VML A PEFY P25VML A PEFY P32VML A D PART NAMES AND FUNCTIONS O Indoor Main Unit Air outlet Air inlet Remote controller PAR 20MAA Once the controls are set the same operation mode can be repeated by simply pressing the ON OFF button O Operation buttons EA MITSUBISHI ELECTRIC CENTRALLY CONTROLLED ES 1Hr ziz ON OFF PI EE 1 ri c ock T e gt m D Don AG ga La Moc tL LIL ERROR CODE I e NOT AVAILABLE o TEMP DON OFF o G CD o 9 posse OIB O al FILTER ill 3 a CO mt ACZ Ems 382 40 CHECK TEST CA J PAR 20MAA TIMER SET Gu C OC 4 amp 6
4. 3kQ 25 C 5 4kQ 30 C 4 3kQ 40 C 3 0kQ Fuse Indoor con troller board 250V 6 3A Fan motor with Inner thermostat Inner thermostat Fan motor Fan motor capacitor 4 pole Output 23W 4 pole Output 32W CRC4417AB CRC4418AB OFF 135 C 5 C ON 95 C 15 C 1 5uFX440V 2 0uFX440V Linear expansion valve DC12V Stepping motor drive port dimension 3 2 0 2000pulse EDM 402MD Power supply terminal bed Transmission terminal bed L N 5 330V 30A 1 2 M1 M2 S 300V 10A Unit mm wonog 891N0S JOMOd soueuajureu 10 pedoid uonsod peiurodde y Je JOOP sseooe aui OYEN ELL 6 paq feuluH L UOISSILISUE1 paq jeuruuJe eoeuns Bulle 100p sseooy wWWOZ uey SJON I wWWOZ uey SJON SN lli JV E jog Buny7 ooueuo jureul pue HAH S Jo eoeds palnbBay y ul palddns aq p noys eBuej pue Jong e X Jonp yelul are y yeyo pojeieq RRRS G LOE LOE G XXX al Q l lino ny Jou ANY 3 Daun EeuJ81X3 LH uonoeuuoo Buidid ureiq mo dH eqni 1eddoo ge 99 pinbi 7 BuizeJq Buidid EAS 5 d qm s ddo 2 0 seb 257 DuizeJq Duidid ea wwoe Ag peseaJour SI UD oads eyxyeiuJ ry uonog Lx WWE Aq peseejJoui si yidag 0905 Jeay peuoene SI 1941 euoindo ey aseo ui paBueyo SI UOISUBWIP AY LG yo pue 1 wo ejqeeDueuo
5. Power consumption Cooling 0 05 0 06 0 07 0 09 50 60Hz Heating 0 05 0 06 0 07 0 09 Current Cooling 0 24 0 28 0 32 0 42 Heating 0 24 0 28 0 32 0 42 External finish Dimension Galvanized steel plate Net weight Heat exchanger Cross fin Aluminum plate fin and copper tube Fan Type Sirocco fanX 1 Airflow rate Lo Mid Hi 5 4 6 5 7 9 6 0 7 595 External static pressure 5 Motor Type Single phase induction motor 0 023 0 032 Air filter Refrigerant pipe dimension Gas Brazing Liquid Brazing Drain pipe dimension PP Honeycomb fabric washable External thread Noise level Lo Mid Hi 29 33 36 30 35 40 Note gt 1 Cooling Heating capacity indicates the maximum value at operation under the following condition Cooling Heating Indoor 2 Indoor 20 CDB Outdoor 7 CDB 6 CWB CDB 19 CWB Outdoor 35 CDB WR2 water 30 C WR2 water 20 C gg 3 2 Electrical parts specifications Tranrsformer PEFY P20VML A PEFY P25VML A PEFY P40VML A Primary 50 60Hz 220 240V Secondry 23 5V 0 9A Room temperature thermistor Liquid pipe thermistor Gas pipe thermistor Resistance 0 C 15k 10 C 9 6kQ 20 C 6 3kQ 25 C 5 4kQ 30 C 4 3kQ 40 C 3 0kQ Resistance 0 C 15k 10 C 9 6kQ 20 C 6 3kQ 25 C 5 4kQ 30 C 4 3kQ 40 C 3 0kQ Resistance 0 C 15k 10 C 9 6kQ 20 C 6
6. improperly water leakage electric shock or fire may result Do not touch the heat exchanger fins Improper handling may result in injury If refrigerant gas leaks during installation work ventilate the room f the refrigerant gas comes into contact with a flame poisonous gases will be released Install the air conditioner according to this Installation Manual f the unit is installed improperly water leakage electric shock or fire may result Have all electric work done by a licensed electrician according to Electric Facility Engineering Standard and Interior Wire Regulations and the instructions given in this manual and al ways use a special circuit f the power source capacity is inadequate or electric work is per formed improperly electric shock and fire may result Securely install the cover of control box and the panel If the cover and panel are not installed properly dust or water may enter the outdoor unit and fire or electric shock may result When installing and moving the air conditioner to another site do not charge the it with a refrigerant different from the refrig erant R22 specified on the unit different refrigerant or air is mixed with the original refrigerant the refrigerant cycle may malfunction and the unit may be dam aged If the air conditioner is installed in a small room measures must be taken to prevent the refrigerant concentration from exceeding the safety li
7. 8 y Room temperature adjustment Button D Up down airflow direction Button Timer continuous Button Ventilation Button 3 Selecting operation Button 9 Checking built in Button 4 Time selection Button Test run Button Time setting Button AD Filter Button 5 Louver Button 2 ON OFF Button 6 Fan speed adjustment Button 3 Position of built in room temperature Never expose the remote controller to direct sunlight Doing so can result in the erroneous measure ment of room temperature Never place any obstacle around the lower right hand section of the remote controller Doing so can u result in the erroneous measurement of room temperature Display e Od sog 85 Q HD DE Bg STAND BY E DEFROST ERROR CODE 900009 Current time Timer Centralized control Timer ON Abnormality occurs Operation mode XXE COOL DRY LAUTO FAN CEHEAT Preparing for Heating mode Defrost mode Set temperature Power ON Louver Not available function Ventilation Function setting mode Test run mode Error check mode Filter sign Set effective for 1 hr Sensor position Room temperature Airflow Fan speed meoumucu OOOO o mm N EIBESITSZZETZ EN SPECIFICATION 3 1 Specification Power source PEFY P20VML A PEFY P25VML A 220 240V 50Hz 60Hz PEFY P32VML A Cooling capacity 2 8 3 6 Heating capacity 3 2 4 0
8. ADVANCED AND EVER ADVANCING MITSUBISHI ELECTRIC ELECTRIC 2001 Air Conditioners For Building Application TECHNICAL amp SERVICE MANUAL Series PEFY Ceiling Concealed us PEFY P20VML A PEFY P25VML A PEFY P32VML A CONTENTS SAFETY PRECAUTIONS T 1 FEATURES 3 2 PART NAMES AND FUNCTIONS 4 3 SPECIFICATION 6 4 OUTLINES AND DIMENSIONS 8 5 WIRING DIAGRAM 9 6 REFRIGERANT SYSTEM DIAGRAM 10 7 TROUBLE SHOOTING 11 8 DISASSEMBLY PROCEDURE 14 INDOOR UNIT CITY MULIH SAFETY PRECAUTIONS 1 Before installation and electric work Before installing the unit make sure you read all the Safety precautions y The Safety precautions provide very important points regarding safety Make sure you follow them This equipment may cause the adverse effect on the same supply system Please report to or take consent by the supply au thority before connection to the system Symbols used in the text Warning Describes precautions that should be observed to prevent danger of injury or death to the user AN Caution Describes precautions that should be observed to prevent damage to the unit Symbols used in the illustrations Indicates an action that must be avoided Indicates that important instructions must
9. AN Issued in May 2001 MEE01K050 New publication effective May 2001 Printed in Japan Specifications subject to change without notice
10. SI ued ureJqr v OPIS HYEJUI 118 y 0 lpid d y Bulyoeye Aq Je8J ay 0 uionoq y w01 peDueuo aq UBD aye ul Are JO uOI 99Jlp SY E paueajo s Jeay ay USYM ulojog eui SOUBUSIUIELU ay 10 eoeds aui deeywz Addns Daul oq y JO M S OLIN ST LAON 012 youd yoq Buns 799 OSS p sn s Pnp yelul are ay ueuM e x peuoenge SI np SYEJUI se yed eu A OUTLINES AND DIMENSIONS Indoor Unit PEFY P20 25 32VML A ejerxny 90 0 atie 62 02 2130 uonoejes BPOW JOJ YOUMS GNLMS A PA uedxe 1 914017993 AJI Joyoede y uonoejes epourJojjuoMS FEMS H UMO SUBM JOJ YOUMS 19 EMS uoioejes SPOW JOJJUDNMS AV IMS DJe0q 041009 JO 1012euuoo Butruelse JO J012euuoo UOILISSUI ISS ON UOHO UUO2 YAMS 18 VIP IMS Jeo JOPSUUOIH peg euruJ9 sejeoipul P N pseoq e 10 peq eui eorpu MEIN E Jos SSSJPPE 1ibip ISI uouws a VILLMS peog SSeJppv Die eJe eui payop UI umoys sg 1281 0 sDuuim eu 7 LILON seDjuonoejep duie Duidid j0jsiuueu 221 pinbijuonpoejep duie Buidid jojsiuueu EEHL Ee el L2HL omt IA JINVN TOANAS JINVN TOG NAS A0zz nia NOLIVNV IdX3 1O8INAS 2 891N0S JOMOd JO OD ay H sul ECHL GoHL LcHL Dosen SI Jemod 022 Ji jueuudius Je AOPZ NO YUM pajo
11. be followed Indicates a part which must be grounded Indicates that caution should be taken with rotating parts This symbol is displayed on the main unit label Color Yellow Beware of electric shock This symbol is displayed on the main unit label Color Yellow Warning Carefully read the labels affixed to the main unit Warning Ask the dealer or an authorized technician to install the air con ditioner Improper installation by the user may result in water leakage elec tric shock or fire e Install the air unit at a place that can withstand its weight Inadequate strength may cause the unit to fall down resulting in injuries Use the specified cables for wiring Make the connections se curely so that the outside force of the cable is not applied to the terminals Inadequate connection and fastening may generate heat and cause a fire e Prepare for typhoons and other strong winds and earthquakes and install the unit at the specified place Improper installation may cause the unit to topple and result in injury Always use an air cleaner humidifier electric heater and other accessories specified by Mitsubishi Electric Ask an authorized technician to install the accessories Improper installation by the user may result in water leakage electric shock or fire Never repair the unit If the air conditioner must be repaired consult the dealer f the unit is repaired
12. d pipe thermistor Gas ope them as pipe t ee 4 3ko 9 6ko Open or short Refer to the thermistor characteristic graph Trans Disconnect the connector and measure the resistance using a tester Normal Abnormal CNT 1 3 Open or short CN3T 1 3 p Fan motor PEFY P20 25 32 Measure the resistance between the terminals using a tester at 20 C Relay connector Motor terminal Normal or Abnormal Relay connector P20 25 Gray Brown 34700 325 00 Gray Blue 420 4Q 399 30 Gray Orange 281 40 233 69 Gray Black 307 990 254 80 Open or short Linear expansion Disconnect the connector then measure the resistance valve using a tester valve CN60 W Open or short Normal 1 5 2 6 3 5 4 6 VVhite Red Yellow Brown Orange Red Blue Brown 1 502 1 0 lt Thermistor characteristic graph gt Room temperature thermistor TH21 Liquid pipe thermistor TH22 al o Gas pipe temperature thermistor TH23 EEE Drain sensor DS IM LETT TT Thermistor Ro 15kQ 3 E MON TT Fixed number of B 3480kQ 2 S TTT TJ TLF 1 1 Rt 15exp 34801 ze 373 Bl AMI OG 15kQ IN St 7 EEE 25 O 20 10 0 10 20 30 40 50 Temperature C 11 e 7 2 Setting of address switch Make sure that power source is turning off Indoor unit control board lt At delivery All models gt SW 1 SW 4 sl lt At delivery All models gt 12345678910 1 MITSUBISHI EEE 7717
13. euuoo SI JOJOBUUOD JOJOW SY 1 i ZHO9 OG AOvz oez oee LING OL 550 G unun anna TT mani ulu nunu aa m nana AlddNS H3MOd A nn 15 loy I m giygiyigel HUM Bip 151 puz on uonoeuuoj g 11 E LLMS ZLMS gung l BO 1 ee H SUL AV ed we 7 1 111i V9WASNA en 8688598 c8NO gt E E osle av O et 11 m b e Tidi 1 l IR a s 2161 21 48 Oe dere O LINN HOOONI LIXIN OL X ae H3TIOHLNOO 3 LOW3H 5 4 Q lt 11 1 OG ore LIN new SC i LINN HOOGLNO OL _ _ cl vox SOX 20x CAES AAA E T rains s IT 5 039 NOISSIASNVH L gs 2 A HITTOHLNOO 31OW3H VNOL 21 L WENO gt 1 E C 3 C3 C3 0 939 TYNINYIL NOISSINSNVHLISIAL EMS EMS YAS zt Ku MM LLL LL LLL LLL LL LL LLL XOd TOHLNOO 40 NOILO3S 30ISNI CN u gt LL LLI Q 6 REFRIGERANT SYSTEM DIAGRAM Gas pipe thermistor TH23 P Gas pipe Liquid pipe thermistor TH22 Brazed joints Heat exchanger L Linear expansion valve Strainer 100mesh Room temperature thermistor TH21 Strainer 100mesh eee PEFY P20 25 32VML A Liquid pipe g6 35 lt 1 4 gt 7 1 How to check the parts Parts name Check points Hoom temperature Disconnect the connector then measure the resistance using a tester thermistor TH21 Sorrounding temperature 10 C 30 C Liqui
14. ge 8 Arrest exchange Intake air sensor exchange Power supply terminal bed exchange 11 Transmission terminal bed exchange d4 c n a 8 2 FAN and FAN MOTOR fig 4 fig 6 fig 8 15 2 Remove the fixing screws three of the fan casing and turn itin direction of arrow Fig 4 3 Remove the fixing screws two of the fan casing and loosen the set screw of the sirocco fan and remove the fan casing and sirocco fan Fig 5 2 Removing the fan motor Be careful on removing heavy parts OPERATING PROCEDURE PHOTOS 1 Removing the fan casing and sirocco fan fig 3 1 Remove the bottom plate 1 fixing screws six Fig 3 Bottom plate1 1 Remove the control box fixing screws three Fig 7 DE 2 Move the control box to place that is not block operation gt C Fig 8 E y 3 Remove the fan motor cable connector in the control box 2 and remove the screws of the motor support Fig 9 Fan casing fig 7 fig 9 Fan motor cable connec ES 8 3 DRAINPAN Be careful on removing heavy parts OPERATING PROCEDURE PHOTOS 1 Removing the drainpan fig 10 1 Remove the fixing screw one of the drainpan Fig 10 2 Slide the drainpan in the order of arrow and remove the drainpan Fig 11 fig 11 8 4 LEV THERMISTOR Liquid Gas piping tempera
15. mit even if the refrigerant should leak Consult the dealer regarding the appropriate measures to pre vent the safety limit from being exceeded Should the refrigerant leak and cause the safety limit to be exceeded hazards due to lack of oxygen in the room could result When moving and reinstalling the air conditioner consult the dealer or an authorized technician f the air conditioner is installed improperly water leakage elec tric shock or fire may result After completing installation work make sure that refrigerant gas is not leaking f the refrigerant gas leaks and is exposed to a fan heater stove oven or other heat source it may generate noxious gases Do not reconstruct or change the settings of the protection devices f the pressure switch thermal switch or other protection device is shorted and operated forcibly or parts other than those specified by Mitsubishi Electric are used fire or explosion may result 2 Precautions for devices that use R407C refrigerant AN Caution e Do not use the existing refrigerant piping The old refrigerant and refrigerator oil in the existing piping con tains a large amount of chlorine which may cause the refrigerator oil of the new unit to deteriorate e Use refrigerant piping made of C1220 CU DHP phosphorus deoxidized copper as specified in the JIS H3300 Copper and copper alloy seamless pipes and tubes In addition be sure that the inner and outer s
16. ture detection Be careful on removing heavy paris OPERATING PROCEDURE PHOTOS 1 Removing the LEV 1 Remove the drainpan with procedure 8 3 2 Remove the bottom plate 2 fixing screws six and remove the plate Fig 12 3 Remove the LEV driving motor with a double spanner Fig 13 2 Removing the thermistors 1 Remove the thermistors from the thermistor holders which are installed on the piping Fig 14 liquid piping fine piping gas piping thick piping fig 13 LEV fig 14 17 0 8 5 HEAT EXCHANGER Be careful on removing heavy parts OPERATING PROCEDURE PHOTOS 1 Removing the heat exchanger fig 15 1 Remove the drainpan with procedure 8 3 Q Heat exchanger 2 Remove the bottom plate2 with procedure 8 4 N 3 3 Remove the heat exchanger cover fixing screws four Fig 15 4 Remove the heat exchanger fixing screws three Fig 16 Fig 17 cover fig 17 ERRE 8 6 CONTROL BOX INSIDE LAYOUT ene CNT eno JL SEE Indoor unit contoller board SMS IMS VMS 88888 ir V NZ B f dm OOO j IMS ZIMS FLNS ILEL E EE TE TE TE G 8 Condenser for motor Transmission terminal bed Trans DSA board Power sourse terminal bed 8 7 SENSOR POSITION Gas sensor Liquid sensor a MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE MITSUBISHI DENKI BLDG 2 2 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAP
17. urfaces of the pipes are clean and free of hazardous sulphur oxides dust dirt shaving particles oils moisture or any other contaminant Contaminants on the inside of the refrigerant piping may cause the refrigerant residual oil to deteriorate JIS Japanese Industrial Standard e Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing Store elbows and other joints in a plastic bag f dust dirt or water enters the refrigerant cycle deterioration of the oil and compressor trouble may result e Use ester oil ether oil or alkylbenzene small amount as the refrigerator oil to coat flares and flange connections The refrigerator oil will degrade if it is mixed with a large amount of mineral oil e Use liquid refrigerant to fill the system If gas refrigerant is used to seal the system the composition of the refrigerant in the cylinder will change and performance may drop Do not use a refrigerant other than R407C f another refrigerant R22 etc is used the chlorine in the refrig erant may cause the refrigerator oil to deteriorate Use a vacuum pump with a reverse flow check valve The vacuum pump oil may flow back into the refrigerant cycle and cause the refrigerator oil to deteriorate e Do not use the following tools that are used with conventional refrigerants Gauge manifold charge hose gas leak detector reverse flow check valve
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