Mitsubishi Electric PLFY-P15VFM-E1 Technical & Service Manual Download Page 26

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DISASSEMBLY PROCEDURE

Be careful when removing heavy parts.

Figure 1

Air intake grille

Grille

Air intake grille knobs

Grille hook

Air filter

Photo 1

Figure 2

Photo 2

Photo 3

Screws

Hook

Safety strap

Hook

Screw

Corner panel

Grille

Hook

Turbo fan

Nut and

washer for

turbo fan

Screw

Fastener*

Fastner*

Connector cover

Connector

box

PLFY-P15VFM-E1.TH

PLFY-P20VFM-E1.TH

PLFY-P25VFM-E1.TH

PLFY-P32VFM-E1.TH

PLFY-P40VFM-E1.TH

PLFY-P50VFM-E1.TH

OPERATING PROCEDURE

PHOTOS & ILLUSTRATIONS

1. Removing the air intake grille and air filter

(1) Slide the knob of air intake grille to the direction of the arrow

to open the air intake grille.

(2) Remove the grille hook from the panel to prevent the grille

from dropping.

(3) Slide the hinge of the intake grille to the direction of the

arrow

and remove the air filter.

2. Removing the panel

(1) Remove the air intake grille. (Refer to procedure 1)

Connector box (See Photo 1)

(2) Remove the screw of the connector cover.

(3) Slide the connector cover to the direction of the arrow to

open the cover.

(4) Disconnect all the connectors, then pull out the connectors

that are coming from panel side from the connector box.

Corner panel (See Figure 2 and Photo 2)

(5) Loosen the screw from the corner of the corner panel.

(6) Slide the corner panel as indicated by the arrow.

(7) Remove the safety strap from the hook, then remove the cor-

ner panel from the panel.

(The safety strap is not equipped for the signal receiver panel

and i-See sensor corner panel.)

(8) Remove the fastener (*), then remove the corner panel.

Panel (See Photo 3)

(9) Remove the 4 screws.

(10) Unlatch the 2 hooks.

* Fastener is only for the signal receiver and i-See sensor corner panel.

OCH617

Summary of Contents for PLFY-P15VFM-E1

Page 1: ...YSTEM 13 5 OUTLINES AND DIMENSIONS 15 6 WIRING DIAGRAM 16 7 REFRIGERANT SYSTEM DIAGRAM 17 8 TROUBLESHOOTING 18 9 DISASSEMBLY PROCEDURE 26 PLFY P15VFM E1 PLFY P20VFM E1 PLFY P25VFM E1 PLFY P32VFM E1 PLFY P40VFM E1 PLFY P50VFM E1 Notes This manual describes service data of the indoor units only RoHS compliant products have G mark on spec name plate PARTS CATALOG OCB617 No OCH617 March 2016 SPLIT TYP...

Page 2: ...st or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor If large amount of mineral oil enters that can cause deterio ration of refrigerant oil etc Do not use the existing refrigerant piping The old refrigerant and lubricant in the existing piping contains a large amount of chlorine which may cause the lubricant deterioration of the...

Page 3: ...h the cylinder of syphon standing vertically Refrigerant is charged from liquid phase Gravimeter Unit 3 Service tools Use the below service tools as exclusive tools for R410A refrigerant No Tool name Specifications 1 Gauge manifold Only for R410A Use the existing fitting specifications UNF1 2 Use high tension side pressure of 5 3MPa G or over 2 Charge hose Only for R410A Use pressure performance o...

Page 4: ... Disperses airflow up and down and adjusts the angle of airflow direction Grille Filter Removes dust and pollutants from drawn in air Horizontal Air Outlet Sets horizontal airflow automatically during cooling or dehumidifying Air Intake Draws in air from room OCH617 ...

Page 5: ...here is an error ON OFF lamp Main display Press to change the operation mode Main menu Press to move the cursor down Function button F1 Main display Press to decrease temperature Main menu Press to move the cursor up Function button F2 Main display Press to increase temperature Main menu Press to go to the previous page Function button F3 Main display Press to change the fan speed Main menu Press ...

Page 6: ...trolled Appears when the operation mode is centrally controlled Appears when the preset temperature is centrally controlled Appears when the filter reset function is centrally controlled Indicates when filter needs maintenance Current room temperature appears here 1 Room temperature See the Installation Manual Appears when the buttons are locked Appears when the On Off timer or Night setback funct...

Page 7: ...eekly timer Restriction Maintenance Initial setting ON OFF timer Auto Off timer Temp range Operation lock Manual vane angle Main Sub Timer Main display Contrast Display details Auto mode Administrator password Language selection Service Input maintenance info Function setting Lossnay City Multi only Check Self check Maintenance password Remote controller check Test run Clock Auto descending panel ...

Page 8: ...id when the preset temperature ranges are restricted Schedule Set the start stop times to operate the units in the energy save mode for each day of the week and set the energy saving rate Up to 4 energy save operation patterns can be set for each day Time can be set in 5 minute increments Energy saving rate can be set to a value from 0 or 50 to 90 in 10 increments Night setback Use to make Night s...

Page 9: ...i only This setting is required only when the operation of City Multi units is interlocked with LOSSNAY units Check Error history Display the error history and execute delete error history Refrigerant leak check Refrigerant leaks can be judged Smooth maintenance The indoor and outdoor maintenance data can be displayed Request code Details of the operation data including each thermistor temperature...

Page 10: ...an speed setting Set Temperature buttons 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 Battery replacement indicator Transmission area Not a...

Page 11: ...133 108 125 142 108 133 150 117 133 158 125 150 183 150 183 217 cfm 230 265 282 230 265 300 230 282 318 247 282 335 265 318 388 318 388 459 Noise level Low Mid High measured in anechoic room dB A 26 28 30 26 29 31 26 30 33 26 30 34 28 33 39 33 39 43 Insulation material PS Air filter PP honeycomb fabric long life type Protection device Fuse Refrigerant control device LEV Connectable outdoor unit R4...

Page 12: ...3 Resistance 0 15 10 9 6 20 6 3 25 5 4 30v 4 3 40 3 0 Fuse Indoor controller board FUSE 250V 6 3A Fan motor MF OUTPUT 50 W Vane motor MV MSBPC20M32 green label MSBPC20M33 blue label DC12V 300 phase Drain pump DP PMD 12D13ME INPUT 3W DC 13V 24R Hr Drain float swich FS Open short detection Linear expansion valve coil LEV DC12V Stepping motor drive Port dimension 5 2 0 2000pulse EDM 40YGME Power supp...

Page 13: ... system with air flow amount Q Pa B Forced static pressure at air condi tioner inlet with air flow amount Q Pa C Static pressure of booster fan with air flow amount Q Pa D Static pressure loss increase amount of fresh air intake duct sys tem for air flow amount Q Pa E Static pressure of indoor unit with air flow amount Q Pa Qa Estimated amount of fresh air intake without D m3 min Whenever the indo...

Page 14: ... the plastic tape Vane motor Horizontal vane Connector Unlocking button Vane motor 3 Set the vertical vane of the air outlet by hand slowly within the range in the table below A A Measured standard position of the grille Horizontal vane Caution Do not set the dimension out of the range Erroneous setting could cause dew drips or malfunction of unit θ Set range Standard of horizontal position Angle ...

Page 15: ...mergency operation switch cooling Emergency operation switch heating Receiver 313 63 liquid 78 gas 7 5 24 5 7 5 24 5 576 610 Ceiling hole 525 Suspension bolt pitch 525 Suspension bolt pitch 88 570 7 5 24 5 7 5 24 5 576 610 Ceiling hole 570 408 408 481 Grille Ceiling Power supply terminal block Drain pipe VP 25 connection Suspension bolt M10 or W3 8 Suspension bolt lower edge Indoor Outdoor unit co...

Page 16: ...re is non polar 3 In case of using M NET please connect to TB5 Transmission line is non polar 4 Symbol S of TB5 is the shield wire connection 5 Symbols used in wiring diagram above are terminal block connector 6 The setting of the SW2 dip switches differs in the capacity For the detail refer to the fig 1 LEGEND MODELS P20 SW2 MODELS SW2 123456 ON OFF P15 123456 ON OFF P25 123456 ON OFF P32 123456 ...

Page 17: ...oom temparature detection TH21 Thermistor Pipe temperature detection Gas TH23 Thermistor Pipe temperature detection Liquid TH22 Linear expansion valve Gas pipe Liquid pipe Flare connection Gas pipe Liquid pipe 12 7 1 2 6 35 1 4 PLFY P15VFM E1 TH PLFY P20VFM E1 TH PLFY P25VFM E1 TH PLFY P32VFM E1 TH PLFY P40VFM E1 TH PLFY P50VFM E1 TH OCH617 ...

Page 18: ...iquid pipe temperature thermistor trouble TH22 Suction pipe temperature thermistor TH6 open short Check delay code 1211 5103 Gas pipe temperature thermistor trouble TH23 5105 Outdoor liquid pipe temperature thermistor TH3 open short Check delay code 1205 5106 Ambient thermistor TH7 open short Check delay code 1221 5109 HIC pipe temperature thermistor TH2 open short Check delay code 1222 5110 Heat ...

Page 19: ... works properly 2 Check if the drain pump works and drains water properly in cooling operation 3 If no water drains confirm that the check code 2502 will not be displayed 10 minutes after the operation starts Note The drain pump for this model is driven by the internal DC motor of controller board so it is not possible to measure the resistance between the terminals Normal Red Black Input 13 V DC ...

Page 20: ... M 4 6 2 3 5 1 Blue Brown Yellow Orange Red White Linear expansion valve 1 Operation summary of the linear expansion valve Linear expansion valves open close through the use of a stepping motor after receiving the pulse signal from the indoor controller board Valve position can be changed in proportion to the number of pulse signals Connection between the indoor controller board and the linear exp...

Page 21: ...t light while the signals are output or keeps lighting even after the signals stop Countermeasures Exchange the indoor con troller board at drive circuit failure Linear expansion valve mechanism is locked Valve does not close completely Wrong connection of the connector or contact failure To check the linear expansion valve operate the indoor unit in fan mode and at the same time operate other ind...

Page 22: ... connector CNMF Measure the voltage in the indoor controller circuit board TEST POINT 1 VDC between 1 and 4 of the fan connector VDC 310 340 V DC TEST POINT 2 VCC between 5 and 4 of the fan connector VCC 15 V DC Wiring recovery Replace the drain pump Replace the indoor controller board Replace the fan motor Replace the indoor controller board Replace the fan motor Is the voltage normal Is there co...

Page 23: ...r board Initial setting Set for each capacity SW3 Function setting 1 Heat pump Cooling only Cooling only Heat pump Under suspension Indoor controller board Initial setting Set for each capacity ON OFF 1 2 3 4 5 6 7 8 9 0 2 3 4 Setting i See sensor installation position Setting pattern 3 Setting pattern 1 5 Vane horizontal angle Second setting First setting 6 7 Indoor linear expansion valve opening...

Page 24: ...emote controller Setting for indoor unit Cut jumper wire J41 J42 on the indoor controller board according to the table below Wireless remote controller pair number Setting operation Fig 1 A 1 Press the button 1 to stop the air conditioner 2 Press the button 2 3 Check that function No 1 is displayed and then press the button 3 The Screen display setting screen will be displayed Fig 2 Pair No changi...

Page 25: ... 12 V DC Malfunction indicator 12 V DC F1 FUSE 6 3A 250V CN32 Remote switch CNV Vane motor MV 12 V pulse output SW2 Capacity setting SWE Jumper switch Emergency operation CNMF Fan motor MF 310 340 V DC 15 V DC CNP Drain pump DP 12 V DC CN4Z i see sensor Sensor CN44 Pipe temperature thermistor Liquid TH22 Gas TH23 CN20 Room temperature thermistor TH21 CN4F Drain float switch FS CN90 Connect to the ...

Page 26: ...hinge of the intake grille to the direction of the arrow 2 and remove the air filter 2 Removing the panel 1 Remove the air intake grille Refer to procedure 1 Connector box See Photo 1 2 Remove the screw of the connector cover 3 Slide the connector cover to the direction of the arrow to open the cover 4 Disconnect all the connectors then pull out the connectors that are coming from panel side from ...

Page 27: ...e the room temperature thermistor TH21 from the connector box 6 Remove the connector CN20 from the indoor controller board and disconnect the room temperature thermistor TH21 Note When fixing the thermistor make sure to fix it to the con nector box using a band 5 Removing the drain pan 1 Remove the panel Refer to procedure 2 2 Remove the room temperature thermistor TH21 Refer to procedure 4 Connec...

Page 28: ...cedure 2 2 Remove the room temperature thermistor TH21 Refer to procedure 4 3 Remove the drain pan Refer to procedure 5 Turbo fan See Photo 3 4 Remove the nut and washer from the turbo fan 5 Remove the turbo fan from the motor shaft Fan motor See Photo 9 6 Remove the control box cover Refer to procedure 3 7 Disconnect the fan motor cable from the CNMF on the indoor controller board 8 Remove the 2 ...

Page 29: ... remove the drain pump See Photo 12 Notes 1 When re attaching the drain pump make sure to use a band to fix the connector to the base plate 2 Do not give a shock to the float switch Otherwise it can cause damage or malfunction 9 Removing the heat exchanger 1 Remove the panel Refer to procedure 2 2 Remove the room temperature thermistor TH21 Refer to procedure 4 3 Remove the drain pan Refer to proc...

Page 30: ...LECTRIC CORPORATION Distributed in Mar 2016 No OCH617 Made in Japan New publication effective Mar 2016 Specifications are subject to change without notice HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN TM ...

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