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Mitsubishi Electronics PCFY-P36NKMU-E manual

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Table of contents for the manual

  • Page 1

    TECHNICAL & SER VICE MANUAL CONTENTS 1. P ART NAMES AND FUNCTIONS .......... 2 2. SPECIFICA TION ..................................... 4 3. OUTLINES AND DIMENSIONS .............. 8 4. WIRING DIAGRAM ............................... 11 5 . REFRIGERANT SYSTEM DIAGRAM ........ 12 6 . MICROPROCESSOR CONTROL ............... 13 7. TROUBLESHOOTING ....[...]

  • Page 2

    Indoor unit 1 P ART NAMES AND FUNCTIONS Air outlet Louver V ane Air intake Filter (Inside of Air intake) 2[...]

  • Page 3

    3 °F°C °F°C ERROR CODE AFTER TIMER TIME SUN MON TUE WED THU FRI SA T ON OFF Hr AFTER FIL TER FUNCTION ONL Y1Hr . WEEKL Y SIMPLE AUTO OFF P AR-21MAA ON/OFF FIL TER CHECK OPERA TION CLEAR TEST TEMP . MENU BACK DA Y MONITOR/SET CLOCK ON/OFF ● ● Display Section For purposes of this explanation, all parts of the display are shown as lit. During [...]

  • Page 4

    4 2 SPECIFICA TION 2-1. SPECIFICA TIONS * 1 Nominal cooling conditions Note : Indoor : Outdoor : Pipe length : Level difference : 80 °FDB/67°FWB (26.7°CDB/19.4°CWB) 95°FDB ( 35 °CDB) 25 ft. (7.6 m) 0 ft ( 0 m) * 2 Nominal heating conditions 70 °FDB(21°CDB) 47 °FDB/43°FWB (8.3°CDB/6.1°CWB) 25 ft. (7.6 m) 0 ft (0 m) * 3 Connect the joint [...]

  • Page 5

    5 Parts name Symbol TH21 TH22 TH23 FUSE MF MV DP FS LEV TB2 TB5 TB15 Resistance 30°F/15.8k Ω , 50°F/9.6k Ω , 70°F/6.0k Ω , 80°F/4.8k Ω , 90°F/3.9k Ω , 100°F/3.2k Ω Resistance 30°F/15.8k Ω , 50°F/9.6k Ω , 70°F/6.0k Ω , 80°F/4.8k Ω , 90°F/3.9k Ω , 100°F/3.2k Ω Resistance 30°F/15.8k Ω , 50°F/9.6k Ω , 70°F/6.0k Ω , 80°F/4[...]

  • Page 6

    6 PCFY -P15NKMU-E External static pressure : 0Pa Power source : 208V , 230V , 60Hz PCFY -P24NKMU-E External static pressure : 0Pa Power source : 208V , 230V , 60Hz PCFY -P30NKMU-E External static pressure : 0Pa Power source : 208V , 230V , 60Hz PCFY -P36NKMU-E External static pressure : 0Pa Power source : 208V , 230V , 60Hz 10.0 15.0 20.0 25.0 30.0[...]

  • Page 7

    7 2-5. FRESH AIR INT AKE AMOUNT & ST A TIC PRESSURE CHARACTERISTICS Q 0 B A C 1 Curve in the graphs Duct characteristics at site Q A EC 2 Q Qa AD 3 Q … Designed amount of fresh air intake <CMM(CFM)> A … Static pressure loss of fresh air intake duct system with airflow amount Q <Pa(in.W.G.x10 -2 )> B … Forced static pressure at[...]

  • Page 8

    8 3 OUTLINES AND DIMENSIONS PCFY -P15NKMU-E Unit : inch(mm) Drainage When drain socket is installed When drain socket is installed Drainage 9-3/16(233) 9-1 1/16(246) 14 i-see sensor 9-5/16(236) [FRONT VIEW] 2 5-7/16(138) 1-7/16(37) 6 Φ 4-15/16(Φ 125) 8(203) 7-1/4(184) 3 18-1/8(461) 15-1/4(387) 2-15/16(75) 7-1/2(190) 1-13/16(46) 3(76) 4-7/8(124) 3[...]

  • Page 9

    9 PCFY -P24NKMU-E Unit : inch(mm) When drain socket is installed 9-3/16(233) Drainage When drain socket is installed 9-1 1/16(246) i-see sensor 14 liquid Φ3/8(Φ9.52) gas Φ5/8(Φ15.88) Drainage 46-3/16(1 173) 1/16(2) 1/16(2) 50-3/8(1280) 1-7/8(48) 5/16(8) 47-3/16(1 198) 3-3/8(85) 7-3/16(182) 26-3/4(680) 18-3/4(476) 2-1/4(57) 9-1/16(230) 7-1 1/16([...]

  • Page 10

    10 When drain socket is installed 9-3/16(233) When drain socket is installed Drainage 9-1 1/16(246) 14 NOTES. 1.Use M10 or W3/8 screw for anchor bolt. 2.Please be sure when installing the drain lift up mechanism (option parts),refrigerant pipe will be only upward. 6 80 26-3/4(680) 12-5/8(320) 61-5/16(1557) (Suspension bolt pitch) 1 1/16(18) 140 62 [...]

  • Page 11

    11 4 WIRING DIAGRAM CN27 CN32 CN51 CN52 SW2 SW3 SW4 SWE ZNR01,02 DSA FUSE X1 MF MV DP FS TB2 TB5 TB15 TH22 TH23 LEV SW1 SW1 1 SW12 SW14 SWA SWC W. B RU BZ LED1 LED2 SW1 SW2 POWER SUPPL Y TRANSMISSION MA-REMOTE CONTROLLER PIPE TEMP . DETECTION / LIQUID (32°F/15ΚΩ, 77°F/5.4ΚΩ Detect) PIPE TEMP . DETECTION / GAS (32°F/15ΚΩ, 77°F/5.4ΚΩ Dete[...]

  • Page 12

    12 5 REFRIGERANT SYSTEM DIAGRAM Refrigerant flow in cooling Refrigerant flow in heating Strainer (#100 mesh) Strainer (#100 mesh) Strainer1 (#50 mesh) Strainer2 (#100 mesh) Heat exchanger Room temparature thermistor TH21 Gas pipe thermistor TH23 Liquid pipe thermistor TH22 Linear expansion valve Gas pipe Liquid pipe Flare connection Gas pipe Liquid[...]

  • Page 13

    13 MICROPROCESSOR CONTROL 6 PAR-21MAA ON/OFF FILTER CHECK OPERA TION CLEAR TEST TEMP . MENU BACK DA Y MONITOR/SET CLOCK ON/OFF ûF ûC ûF ûC ERROR CODE AFTER TIMER TIME SUN MON TUE WED THU FRI SAT ON OFF Hr AFTER FILTER FUNCTION ONLY1Hr . WEEKLY SIMPLE AUTO OFF INDOOR UNIT CONTROL 6-1. COOL OPERA TION <How to operate> Press POWER ON/OFF but[...]

  • Page 14

    14 → Control modes Control details 3-1. Drain pump control •Drain pump is always ON during the COOL and DRY mode operation. (Regardless of the thermo ON/OFF) •When the operation mode has changed from the COOL or DRY to the others (including Stop), the drain pump will be kept on for 3 minutes, then turns OFF . Float switch control • Float sw[...]

  • Page 15

    15 Control modes Control details 1-1. Thermo regulating function (Function to prevent restarting for 3 minutes) Setting the Dry thermo by the thermo regulating signal and the room temperature (TH21). Dry thermo ON Room temperature desired temperature + 2°F Dry thermo OFF Room temperature desired temperature 1-2. Freeze prevention control No contro[...]

  • Page 16

    16 Control modes Control details Set by remote controller . When [Auto] is set, fan speed becomes [Low]. 2. Drain pump Remarks 1. Fan Ty p e Fan speed notch 4 speeds + Auto type [Low], [Med2], [Med1], [High], [Auto] 3. V ane (up/down vane change) 2-1. Drain pump control The drain pump turns ON for the specified amount of time when any of the follow[...]

  • Page 17

    17 Control modes Control details 1-1. Thermoregulating function (Function to prevent restarting for 3 minutes) • Room temperature desired temperature -2°F ···Thermo ON • Room temperature desired temperature ···Thermo OFF 1. Thermoregulating function Remarks 2-1. Hot adjust mode The fan controller becomes the hot adjuster mode for the fol[...]

  • Page 18

    18 → Control modes Control details 2. Fan Remarks 2-3. Thermo OFF mode When the thermoregulating function changes to OFF , the indoor fan operates in [Extra low]. 2-4. Heat defrosting mode The indoor fan stops. (1) Initial setting: OFF → HEA T···[last setting] When the last setting is [Swing] ··· [Downward D] When changing the mode from e[...]

  • Page 19

    19 1. Drain pump Control modes Control details HEA T mode for room temperature < Desired temperature COOL mode for room temperature Desired temperature (1) HEA T mode → COOL mode Room temperature Desired temperature + 3°F . or 3 min. has passed (2) COOL mode → HEA T mode Room temperature Desired temperature - 3°F . or 3 min. has passed 1. [...]

  • Page 20

    20 7 TROUBLESHOOTING 7-1. HOW TO CHECK THE P ARTS PCFY -P15NKMU-E PCFY -P24NKMU-E PCFY -P30NKMU-E PCFY -P36NKMU-E Parts name Check points Disconnect the connector then measure the resistance using a tester . (At the ambient temperature 50 " F~86 " F) (Refer to the next page for a detail.) Room temperature thermistor (TH21) Liquid pipe the[...]

  • Page 21

    21 4 Φ 4 3 6 5 Φ 3 2 Φ 2 1 Φ 1 Φ 4 Φ 3 Φ 2 Φ 1 Controller board Drive circuit Connector(CN60) DC12V Brown Red Blue Orange Y ellow White M 4 6 2 3 5 1 Blue Brown Y ellow Orange Red White Linear expansion valve <Thermistor characteristic graph> Room temperature thermistor (TH21) Liquid pipe temperature thermistor (TH22) Gas pipe tempera[...]

  • Page 22

    22 6 5 4 3 2 1 LED 1k Ω Symptom Check points Operation circuit failure of the micro processor Disconnect the connector on the controller board, then con- nect LED for checking. When power is turned on, pulse signals will be output for 10 seconds. There must be some defects in the operation circuit if the LED does not light while the signals are ou[...]

  • Page 23

    23 Notes · High voltage is applied to the connecter (CNMF) for the fan motor . Pay attention to the service. · Do not pull out the connector (CNMF) for the motor with the power supply on. (It causes trouble of the indoor controller circuit board and fan motor .) Self check Symptom : The indoor fan cannot turn around. Ye s NG NG NG Wiring contact [...]

  • Page 24

    24 SW3-5 Note : 4 SW3-5 V ane setting Initial setting ● Setting V ane position OFF Set up Standard Standard ON Set up Less draft Upward position than the standard Switch Function Remarks Effective timing Under suspension Under suspension Before power supply ON Before power supply ON <Initial setting> ON OFF 1 234 567 8 9 10 Address board Op[...]

  • Page 25

    25 0 5 9 4 8 3 7 2 6 1 0 5 9 4 8 3 7 2 6 1 0 5 9 4 8 3 7 2 6 1 0 5 9 4 8 3 7 2 6 1 0 8 F 7 E 6 D 5 C 4 B 3 A 2 9 1 0 8 F 7 E 6 D 5 C 4 B 3 A 2 9 1 Switch SW A Ceiling height selector SWC Option selector Rotary switch Rotary switch SW14 Branch No. setting SW1 1 1s digit address setting SW12 10ths digit address setting Pole (High ceiling) (Standard) [...]

  • Page 26

    26 • T o operate each indoor unit by each remote controller when installed 2 indoor units or more are near , Pair No. setting is necessary . Pair No. setting is available with the 4 patterns (Setting patters A to D) . Make setting for J41, J42 of indoor controller board and the Pair No. of wireless remote controller . • Y ou may not set it when[...]

  • Page 27

    27 7-3. TEST POINT DIAGRAM 7-3-1. Indoor controller board PCFY -P15NKMU-E PCFY -P24NKMU-E PCFY -P30NKMU-E PCFY -P36NKMU-E CN52 Remote indicator CN51 Centrally controlled CN4Y i-See sensor CN2M Connect to the terminal block (TB5) (M-NET transmission connecting wire) 24-30VDC (non-polar) CN3A Connect to the terminal block (TB15) (MA-Remote controller[...]

  • Page 28

    28 7-3-2. Address board PCFY -P15NKMU-E PCFY -P24NKMU-E PCFY -P30NKMU-E PCFY -P36NKMU-E SW1 Function setting SW12 Address setting 10ths DIGIT SW1 1 Address setting 1st DIGIT SW14 Branch No. SW A Ceiling height selector SWC Option selector[...]

  • Page 29

    OPERA TING PROCEDURE PHOTOS & ILLUSTRA TIONS 29 8 DISASSEMBL Y PROCEDURE 1. Removing the air intake grille (1) Slide the air intake grille holding knobs (at 2 or 3 loca- tions) to the rear to open the air intake grille. (See Figure 1) (2) While the air intake grille left open, push the stoppers on the rear hinges (at 2 or 3 locations) to pull o[...]

  • Page 30

    OPERA TING PROCEDURE PHOTOS & ILLUSTRA TIONS 30 3. Removing the room temperature thermistor (TH21) (1) Remove the air intake grille. (See Figure 1,2) (2) Remove the screw from the beam and remove the beam. (See Photo 1) (3) Remove 2 screws from the electrical cover , and remove the electrical cover . (4) Remove 2 screws from the electrical box [...]

  • Page 31

    OPERA TING PROCEDURE PHOTOS & ILLUSTRA TIONS 31 Screw Side panel (Right) Side panel (Left) Sliding the panel to the front Figure 3 6. Removing the side panel (1) Remove the air intake grille. (See Figure 1,2) (2) Remove the screw from the side panel, and remove the side panel by sliding the panel to the front. 5. Removing the fan (3 connection)[...]

  • Page 32

    OPERA TING PROCEDURE PHOTOS & ILLUSTRA TIONS 32 8. Removing the under panel (1) Remove the air intake grille. (See Figure 1,2) (2) Remove the left and right side panels. (See Figure 3) (3) Remove the beam. (See Photo 1) (4) Remove the electrical cover . (See Photo 1) (5) Pull the electrical box downward. (See Photo 2) (6) (Wireless remote contr[...]

  • Page 33

    OPERA TING PROCEDURE PHOTOS & ILLUSTRA TIONS 33 12. Removing the Auto vane (1) Remove the intake grille. (See Figure 1,2) (2) Remove the right side panel. (See Figure 3) (3) Remove the vane motor and cover . (See Photo 12) (4) Slide the auto vane to the vane motor side. (5) Remove 2 axes from each vane support pushing the vane support to the va[...]

  • Page 34

    OPERA TING PROCEDURE PHOTOS & ILLUSTRA TIONS 34 13. Removing the heat exchanger and LEV (1) Remove the air intake grille. (See Figure 1,2) (2) Remove the beam. (See Photo 1) (3) Remove the electrical cover . (See Photo 1) (4) Pull the electrical box downward. (See Photo 2) (5) Disconnect the connector CN60 (white) from the indoor controller boa[...]

  • Page 35

    35[...]

  • Page 36

    Copyright 2009 MITSUBISHI ELECTRIC ENGINEERING CO., L TD. Distributed in Feb. 2009 No. OCH450 PDF 7 Made in Japan New publication, effective Feb. 2009 Specifications subject to change without notice HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAP AN TM[...]