SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS December 2012 TECHNICAL & SERVICE MANUAL Series PMFY Ceiling Cassettes R410A Indoor unit [Model names] [Service Ref.
1 TECHNICAL CHANGES PMFY-P20VBM-ER3 PMFY-P25VBM-ER3 PMFY-P32VBM-ER3 PMFY-P40VBM-ER3 PMFY-P20VBM-ER4 PMFY-P25VBM-ER4 PMFY-P32VBM-ER4 PMFY-P40VBM-ER4 1. INDOOR CONTROLLER BOARD has been changed. (S/W version up) PMFY-P20VBM-E#2 PMFY-P25VBM-E#2 PMFY-P32VBM-E#2 PMFY-P40VBM-E#2 PMFY-P20VBM-ER3 PMFY-P25VBM-ER3 PMFY-P32VBM-ER3 PMFY-P40VBM-ER3 1. DRAIN PIPE has been changed. 2. JOINT SOCKET (FOR DRAIN PIPE) has been added.
2 SAFETY PRECAUTION Cautions for units utilizing refrigerant R410A Use new refrigerant pipes. In case of using the existing pipes for R22, be careful with the followings. · Change flare nut to the one provided with this product. Use a newly flared pipe. · Avoid using thin pipes. Make sure that the inside and outside of refrigerant piping is clean and it has no contaminants such as sulfur, oxides, dirt, shaving particles, etc, which are hazard to refrigerant cycle.
[1] Cautions for service (1) Perform service after recovering the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) When performing service, install a filter drier simultaneously. Be sure to use a filter drier for new refrigerant. [2] Additional refrigerant charge When charging directly from cylinder · Check that cylinder for R410A on the market is syphon type.
3 PART NAMES AND FUNCTIONS 3-1. Indoor Unit Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction. Guide vane Air flow can be changed to horizontal by moving the Guide vane to the left or right. Horizontal Air Outlet Filters Remove dust and pollutants from return air. OC307E Air intake Returns air from room.
3-2. WIRED REMOTE CONTROLLER Wired remote controller function * The functions which can be used are restricted according to the model.
The main display can be displayed in two different modes: "Full" and "Basic". The factory setting is "Full". To switch to the "Basic" mode, change the setting on the Main display setting. * All icons are displayed for explanation. Fri Fri Cool Room Cool Set temp. Mode Temp. Set temp. Auto Auto Mode Fan Temp. Fan Operation mode Indoor unit operation mode appears here. Appears when the buttons are locked. Preset temperature Preset temperature appears here.
Menu structure Main menu Press the MENU button. Move the cursor to the desired item with the F1 and F2 buttons, and press the SELECT button. Vane · Louver · Vent. (Lossnay) High power Timer On / Off timer Auto-Off timer Filter information Error information Weekly timer Energy saving Auto return Schedule Night setback Restriction Temp.
Main menu list Setting and display items Setting details Vane · Louver · Vent. (Lossnay) Use to set the vane angle. • Select a desired vane setting from f ve different settings. Use to turn ON / OFF the louver. • Select a desired setting from "ON" and "OFF." Use to set the amount of ventilation. • Select a desired setting from "Off," "Low," and "High." High power Use to reach the comfortable room temperature quickly. • Units can be operated in the High-power mode for up to 30 minutes.
Setting and display items Initial setting Display details Auto mode Setting details Make the settings for the remote controller related items as necessary. Clock: The factory settings are "Yes" and "24h" format. Temperature: Set either Celsius (°C) or Fahrenheit (°F). Room temp. : Set Show or Hide. Auto mode: Set the Auto mode display or Only Auto display. Whether or not to use the AUTO mode can be selected by using the button.
3-3. WIRED REMOTE CONTROLLER “Sensor” indication Display Section For purposes of this explanation, all parts of the display are shown. During actual operation, only the relevant items will be lit. Identifies the current operation Displayed when the remote controller sensor is used. Day-of-Week Shows the current day of the week. Time/Timer Display “Locked” indicator Shows the current time, unless the simple or Auto Off timer is set.
4 SPECIFICATIONS 4-1. SPECIFICATION PMFY-P20VBM-E PMFY-P20VBM-E1 PMFY-P20VBM-E#2 PMFY-P20VBM-ER3 PMFY-P20VBM-ER4 Item PMFY-P40VBM-E PMFY-P40VBM-E1 PMFY-P40VBM-E#2 PMFY-P40VBM-ER3 PMFY-P40VBM-ER4 Single phase 220V-230V-240V 50Hz / 220V 60Hz Power V Hz Cooling capacity kW 2.2 2.8 3.6 4.5 Heating capacity kW 2.5 3.2 4.0 5.
4-2. ELECTRIC PARTS SPECIFICATIONS Service ref. Symbol Parts name PMFY-P25VBM-E PMFY-P32VBM-E PMFY-P40VBM-E PMFY-P20VBM-E PMFY-P25VBM-E1 PMFY-P32VBM-E1 PMFY-P40VBM-E1 PMFY-P20VBM-E1 PMFY-P20VBM-E#2 PMFY-P25VBM-E#2 PMFY-P32VBM-E#2 PMFY-P40VBM-E#2 PMFY-P20VBM-ER3 PMFY-P25VBM-ER3 PMFY-P32VBM-ER3 PMFY-P40VBM-ER3 PMFY-P20VBM-ER4 PMFY-P25VBM-ER4 PMFY-P32VBM-ER4 PMFY-P40VBM-ER4 Room temperature thermistor TH21 Resistance 0 /15k , 10 /9.6k , 20 /6.3k , 25 /5.4k , 30 /4.3k , 40 /3.
4-3. AIR CAPACITY TAKEN FROM OUTSIDE PMFY-P·VBM-E series enables to take fresh air from outside. When taking fresh air, the duct fan is used. The air capacity should be 20% or less of the air flow SPEC(Hi). 250 288.5 90 Unit : mm 4-W2.8 108 W100 22 W1 Fresh air intake hole (Knockout) Fresh air intake hole (Knockout) Service Ref. Air flow (Hi) Air capacity from outside PMFY-P20VBM-E PMFY-P20VBM-E1 PMFY-P20VBM-E#2 PMFY-P20VBM-ER3 PMFY-P20VBM-ER4 8.7m³/min Max 1.
4-4. NOISE CRITERION CURVES NOTCH SPL(dB) 35 High Medium1 33 30 Medium2 Low 27 LINE 90 80 70 NC-70 60 NC-60 50 NC-50 40 NC-40 30 NC-30 20 10 NC-20 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE 63 125 250 500 1000 2000 4000 8000 PMFY-P25/32VBM-E PMFY-P25/32VBM-E1 PMFY-P25/32VBM-E#2 PMFY-P25/32VBM-ER3 PMFY-P25/32VBM-ER4 OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar) OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.
176 20 340 Suspension bolt pitch Ceiling opening 430 Outer side of grille 470 Refrigerant pipe(liquid) O.D.W6.35 43 46 (96) drain pan 812 759 Panel(grille) 580 1000 outer side of grille Lower view 243 Front (56) W50 Air outlet(lower) 177 Outer line of grille 53 30 Terminal block for MA remote controller Electrical box Center of unit 20 20 74.
6 WIRING DIAGRAM PMFY-P20VBM-E PMFY-P25VBM-E PMFY-P32VBM-E FUSE BREAKER PULL BOX (15A) (15A) POWER SUPPLY TO NEXT ~/N 220-230-240V 50Hz INDOOR UNIT 220V 60Hz TO OUTDOOR UNIT BC CONTROLLER REMOTE CONTROLLER DC24-30V TB5 M1 M2 (SHIELD) TB2 L N MF PE TO MA-REMOTE CONTROLLER DC8.7-13V BLU BLU 5 1 2 ORN ORN RED BLU GRN/YLW PMFY-P40VBM-E I.
PMFY-P25VBM-E1 BREAKER (15A) POWER SUPPLY ~/N 220-240V 50Hz 220V 60Hz MF TO OUTDOOR UNIT BC CONTROLLER REMOTE CONTROLLER DC24-30V TO MA-REMOTE CONTROLLER DC8.7-13V TB5 M1 M2 S (SHIELD) I.B 6 3 1 CND (RED) POWER BLU BLU 1 BLU 3 CN51 (WHT) CENTRALLY CONTROL A.B SW3 SW2 12345 1 2 3 4 5 6 7 8 910 123456 CD AB 7 8 1s DIGIT 1 BRANCH No.
PMFY-P20VBM-E#2 PMFY-P20VBM-ER3 PMFY-P25VBM-E#2 PMFY-P25VBM-ER3 TO OUTDOOR UNIT TO MA-REMOTE BC CONTROLLER REMOTE CONTROLLER CONTROLLER DC24-30V DC8.7-13V FUSE PULL BOX (15A) TO NEXT INDOOR UNIT TB15 TB5 S (SHIELD) TB2 L N 1 3 I.
PMFY-P20VBM-ER4 PMFY-P25VBM-ER4 TO OUTDOOR UNIT TO MA-REMOTE BC CONTROLLER REMOTE CONTROLLER CONTROLLER DC24-30V DC8.7-13V FUSE PULL BOX (15A) TO NEXT INDOOR UNIT TB15 TB5 S (SHIELD) TB2 L N 1 3 I.
7 REFRIGERANT SYSTEM DIAGRAM PMFY-P20VBM-E PMFY-P20VBM-E1 PMFY-P20VBM-E#2 PMFY-P20VBM-ER3 PMFY-P20VBM-ER4 PMFY-P25VBM-E PMFY-P25VBM-E1 PMFY-P25VBM-E#2 PMFY-P25VBM-ER3 PMFY-P25VBM-ER4 PMFY-P32VBM-E PMFY-P32VBM-E1 PMFY-P32VBM-E#2 PMFY-P32VBM-ER3 PMFY-P32VBM-ER4 Gas pipe temperature thermistor TH23 PMFY-P40VBM-E PMFY-P40VBM-E1 PMFY-P40VBM-E#2 PMFY-P40VBM-ER3 PMFY-P40VBM-ER4 Strainer (#50mesh) Gas pipe Liquid pipe temperature thermistor TH22 Flare connection +1 +2 Liquid pipe Heat exchanger Strainer (
8 TROUBLE SHOOTING 8-1. HOW TO CHECK PMFY-P20VBM-E PMFY-P20VBM-E1 PMFY-P20VBM-E#2 PMFY-P20VBM-ER3 PMFY-P20VBM-ER4 THE PARTS PMFY-P25VBM-E PMFY-P25VBM-E1 PMFY-P25VBM-E#2 PMFY-P25VBM-ER3 PMFY-P25VBM-ER4 PMFY-P32VBM-E PMFY-P32VBM-E1 PMFY-P32VBM-E#2 PMFY-P32VBM-ER3 PMFY-P32VBM-ER4 Parts name Check points Room temperature thermistor (TH21) Liquid pipe temperature thermistor (TH22) Gas pipe temperature thermistor (TH23) Disconnect the connector then measure the resistance with a tester.
< Thermistor for lower temperature > Thermistor for lower temperature Room temperature thermistor (TH21) Liquid pipe temperature thermistor (TH22) Gas pipe temperature thermistor (TH23) Rt=15exp { 3480( 0: : 10: : 20: : 25: : 30: : 40: : 1 273+t 40 Resistance (k ) Thermistor R0=15k' ± 3% Fixed number of B=3480 ± 2% 50 1 )} 273 15k' 9.6k' 6.3k' 5.4k' 4.3k' 3.
8-2. TROUBLESHOOTING Check method of indoor fan motor (fan motor / controller board) Notes · High voltage is applied to the connecter (FAN)(CNMF1, 2) for the fan motor. Pay attention to the service. · Do not pull out the connector (FAN)(CNMF1, 2) for the motor with the power supply on, doing so may result in damage to the board.
8-3.
The black square ( Switch Pole Effective timing Remarks 1 SW12 SW11 23 90 1 23 90 1 78 45 6 10 How to set addresses Example : If address is “3”, remain SW12 (for over 10) at “0”, and match SW11 (for 1 to 9) with “3”. 78 90 1 78 78 SW11 45 6 90 1 45 6 SW12 23 Rotary switch Address board 23 45 6 SW11 1s digit address setting SW12 10ths digit address setting Operation by switch ) indicates a switch position.
8-4. TEST POINT DIAGRAM 8-4-1.
Indoor controller board PMFY-P20VBM-E#2 PMFY-P20VBM-ER3 PMFY-P20VBM-ER4 PMFY-P25VBM-E#2 PMFY-P25VBM-ER3 PMFY-P25VBM-ER4 FUSE 6.
Indoor controller board PMFY-P20VBM-E#2 PMFY-P20VBM-ER3 PMFY-P20VBM-ER4 PMFY-P25VBM-E#2 PMFY-P25VBM-ER3 PMFY-P25VBM-ER4 FUSE 6.
8-4-2. Address board PMFY-P20VBM-E PMFY-P20VBM-E1 PMFY-P20VBM-E#2 PMFY-P20VBM-ER3 PMFY-P20VBM-ER4 PMFY-P25VBM-E PMFY-P25VBM-E1 PMFY-P25VBM-E#2 PMFY-P25VBM-ER3 PMFY-P25VBM-ER4 PMFY-P32VBM-E PMFY-P32VBM-E1 PMFY-P32VBM-E#2 PMFY-P32VBM-ER3 PMFY-P32VBM-ER4 PMFY-P40VBM-E PMFY-P40VBM-E1 PMFY-P40VBM-E#2 PMFY-P40VBM-ER3 PMFY-P40VBM-ER4 SW5 Voltage selector SW1 Function setting SW12 Address setting 10ths DIGIT OC307E SW11 Address setting 1s DIGIT 31 SW14 Branch No.
9 DISASSEMBLY PROCEDURE PMFY-P20VBM-E PMFY-P20VBM-E1 PMFY-P20VBM-E#2 PMFY-P20VBM-ER3 PMFY-P20VBM-ER4 PMFY-P25VBM-E PMFY-P25VBM-E1 PMFY-P25VBM-E#2 PMFY-P25VBM-ER3 PMFY-P25VBM-ER4 PMFY-P32VBM-E PMFY-P32VBM-E1 PMFY-P32VBM-E#2 PMFY-P32VBM-ER3 PMFY-P32VBM-ER4 PMFY-P40VBM-E PMFY-P40VBM-E1 PMFY-P40VBM-E#2 PMFY-P40VBM-ER3 PMFY-P40VBM-ER4 Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS Photo 1 1.
OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS Figure 6 Removing the grille Hooks (1) Open the intake grille by pressing PUSH of the air intake grille and remove the air f lter (× 2). (See Figure 1) (2) Remove the screw cover in the middle of the air outlet. (See Figure 7) (3) Open the upper and lower f aps on the indoor unit completely. (See Figure 7) (4) Remove the securing screws (× 7). (A: M5 × 0.
PHOTOS & ILLUSTRATIONS OPERATING PROCEDURE Photo 2 2. Removing the electrical parts box (1) Remove the grille. (2) Remove the address board cover. (3) Remove the electrical parts cover. (4) Disconnect the connectors of fan motor, vane motor, drain pump, room temperature thermistor, pipe temperature thermistor (Liquid, Gas), and drain sensor on the electrical controller board. (5) Disconnect the lead wire and earth wire from terminal block. (6) Remove the electrical parts box.
OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS 5. Removing the drain pump (1) Remove the grille. (2) Unhook the claw in the middle of nozzle and remove the drain pan. (See Photo 2) (3) Remove the address board cover. (See Photo 3) (4) Remove the electrical parts cover. (See Photo 3) (5) Disconnect the connector of drain pump. (6) Remove the drain hose. (7) Remove the drain pump. (2 screws) Photo 6 Drain sensor Drain pump Fan motor 6. Removing the fan motor and line flow fan (1) Remove the grille.
10 RoHS PARTS LIST PANEL PARTS PMP-40BM (FOR PMFY-P20/25/32/40VBM-E(1)) PMP-40BMW (FOR PMFY-P20/25/32/40VBM-E#2, PMFY-P20/25/32/40VBM-ER3, PMFY-P20/25/32/40VBM-ER4) 11 12 2 11 3 4 5 1 2 13 3 4 10 5 6 9 7 No. 1 RoHS 8 Q'ty/set Part No. Specification PMP40BM 3 G — 4 G R01 E01 5 G R01 E07 6 G R01 E14 7 G R01 E15 E01 2 2 HANGER 2 2 099 PANEL HOOK 2 2 054 GRILLE CATCH 2 2 500 L.L.FILTER 1 1 500 L.L.
RoHS PARTS LIST 8 L 1 7 N BG79K0134H03 CN60 2 M1 3 M2 S 1 CN6V 2 4 CNP ELECTRICAL PARTS PMFY-P20VBM-E PMFY-P25VBM-E PMFY-P32VBM-E PMFY-P40VBM-E PMFY-P20VBM-E1 PMFY-P25VBM-E1 PMFY-P32VBM-E1 PMFY-P40VBM-E1 PMFY-P20VBM-E#2 PMFY-P25VBM-E#2 PMFY-P32VBM-E#2 PMFY-P40VBM-E#2 PMFY-P20VBM-ER3 PMFY-P25VBM-ER3 PMFY-P32VBM-ER3 PMFY-P40VBM-ER3 PMFY-P20VBM-ER4 PMFY-P25VBM-ER4 PMFY-P32VBM-ER4 PMFY-P40VBM-ER4 5 6 RoHS Q'ty/set No. Part No.
RoHS PARTS LIST FUNCTIONAL PARTS PMFY-P20VBM-E PMFY-P25VBM-E PMFY-P32VBM-E PMFY-P40VBM-E PMFY-P20VBM-E1 PMFY-P25VBM-E1 PMFY-P32VBM-E1 PMFY-P40VBM-E1 PMFY-P20VBM-E#2 PMFY-P25VBM-E#2 PMFY-P32VBM-E#2 PMFY-P40VBM-E#2 PMFY-P20VBM-ER3 PMFY-P25VBM-ER3 PMFY-P32VBM-ER3 PMFY-P40VBM-ER3 PMFY-P20VBM-ER4 PMFY-P25VBM-ER4 PMFY-P32VBM-ER4 PMFY-P40VBM-ER4 2 1 3 4 5 31 30 6 28, 29 14 12 11 7 27 13 8 9 10 15 20 16 22 23, 24 23 21 17 18 19 26 7MB001-A01_02 25 OC307E 38
RoHS PARTS LIST No. RoHS Q'ty/set Part No. Part Name Specif cation Wiring Remarks Diagram VBM-E#2 VBM-ER3 VBM-ER4 (Drawing No.
HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN cCopyright 2004 MITSUBISHI ELECTRIC CORPORATION Distributed in Dec. 2012 No. OC307 REVISED EDITION-E Distributed in Oct. 2009 No. OC307 REVISED EDITION-D PDF 7 Distributed in Sep. 2008 No. OC307 REVISED EDITION-C PDF 7 Distributed in Jul. 2007 No. OC307 REVISED EDITION-B PDF 8 Distributed in Jul. 2006 No. OC307 REVISED EDITION-A PDF 8 Distributed in Apr. 2004 No. OC307 PDF 9 Made in Japan New publication, effective Dec.
