Mitsubishi PLFY-P32VKM, PLFY-P40VKM, PLFY-P50VKM, PLFY-P63VKM, PLFY-P80VKM SERVICE MANUAL

...

SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

1998

No. OC158

Series PLFY

Indoor unit [Model names]

PLFY-P32VKM PLFY-P40VKM PLFY-P50VKM PLFY-P63VKM PLFY-P80VKM PLFY-P100VKM PLFY-P125VKM

INDOOR UNIT

Ceiling Cassettes

[Service Ref.]

PLFY-P32VKM PLFY-P40VKM PLFY-P50VKM PLFY-P63VKM PLFY-P80VKM PLFY-P100VKM PLFY-P125VKM

R407C

CONTENTS

1. FEATURES ·········································2

2. SAFETY PRECAUTION·····················4

3. PART NAMES AND FUNCTIONS······7

4. SPECIFICATION ·································9

5. OUTLINES AND DIMENSIONS········11

6. WIRING DIAGRAM···························14

REFRIGERANT SYSTEM DIAGRAM

8. TROUBLE SHOOTING·····················16

9. DISASSEMBLY PROCEDURE·········21

10. PARTS LIST ·····································24

·15

The Slim Line. From Mitsubishi Electric.

FEATURES

Series PLFY

Indoor unit

Models

PLFY-P32VKM PLFY-P40VKM PLFY-P50VKM PLFY-P63VKM PLFY-P80VKM PLFY-P100VKM PLFY-P125VKM

Ceiling Cassettes

Cooling capacity/Heating capacity

3,700 / 4,100 4,700 / 5,200 5,800 / 6,600 7,300 / 8,300

9,300 / 10,500 11,600 / 13,000 14,500 / 16,300

kcal/h

3,150 / 3,550 4,000 / 4,500 5,000 / 5,600 6,300 / 7,100

8,000 / 9,000 10,000 / 11,200 12,500 / 14,000

1.PURSUING CONPACTNESS

(1)Panel size and body volume reduced to 64% of previous models

The width and depth of the panel have been reduced by 19cm respectively,resulting in a compact model which fits smaller environments (like shops) perfectly.

(2)Multi-application panels flexibly adapt to installation conditions.

Space panel and Wide panel may be installed on ceilings with shallow depth using the exiting opening .

2."SMUDGE-FREE", PRECISELY TARGETED AIRFLOW SYSTEM

The new control system regulates airflow to prevent smudging. Aprojection inside the air passage distributes air evenly over the top and bottom of the vane. Two projections on the air outlet work to prevent cooled air from rising to the celling, and also to stop outside air being dragged into the cooled air stream.

3.AIRFLOW ADJUSTABLE TO ANY INDOOR ENVIRONMENT

Airflow can be adjusted according to celling height and the number of air outlets. "Wide Zoming Flow" creates anoptimum airflow for any indoor environment.

4.A FURTHER REFINEMENT OF COMFORT WITH NOISE SUPPRESION

The celling 4-way airflow cassette has a special "silent-design". The "2-Tap"system allows a choice between silent and standard modes according to the height of the cellig. For ordinary residenced which have a low celling, selection of the silent mode will result in remarkable noise reductions.

5.ECONOMICAL AND EASY MAINTENANCE

(1)Push-open grill

Filter clogging is widely recognized as a cause of reduced perfomance, but up until now it has been troublesome to clean filters. With the "push-open grill" the fillter can be smoothly opened out at the push of a button, enabling speedy cleaning.

(2)An unprecedented level of vane-cleaning

The unique airflow system prevents the intake of indoor air. Dewing therefore does not occur, and the vane is flockless. The resulting level of dirt on the vane due to tobacco smoke, dust, etc. is very light,and can be wiped off easily with a neutral detergent

(3)Long-life fillter

This new celling 4-way airflow cassette employs a long life fillter which requires no maintenance for up to 2,500 hours of operation in general office environments. It adds uo to an ideal blend of comfort and low maintenance.

6.COMPACT DIMENSIONS MEAN EASY INSTALLATION

(1)Carefree suspension work with lightweight unit

The new unit weighs in at 20kg (9kg lighter than the previous model) and is easy to handle and install. What's more, suspension work is facillitated by compact dimensions ensuring a snug fit.

(2)Smooth installation with "one-direction"bolts

Suspension bolts can be fixes consistently from one direction easing suspension work.

(3)Trouble-free fitting work with slender refrigerant piping

Refrigerant piping has been reduced in size, and pipe-curving work at the installation site can now be completed quickly and economically. In addition, refrigerant and drain piping are set at different corners, which means that flare connections and drain piping heat insulation work can be smoothly and reliably implemented.

(4)Easy-access terminal and control panels for efficient wiring

When performing wiring work, progress can be checked on the power source terminal and control panels simply by removing the electrical parts cover. Adress setting can also be done easily from beneath at a convenient angle.

(5)"One-push"to provisionally position front panel

Panel weight has been redused from 7kg to 3.7kg. The previous 3-step process for provisionally positioning the panel has been streamlined, and now a simple "one-push" action at the diagonal corners fixed it into place, resulting in major

time-saving.

7.ADVANCED MICROPROCESSOR [PAR-F25MA]

(1)Easy to use microprocessor

1)Ultra-thin remote controller

The streamlind,square controller is designed to blend well with any interior.Also,the sophisticated microprocessor allows you to easily carry out a wide range of operations.

2)Attractive liquid crystal display(LCD)

The unit´s operation mode,set temperature,room temperature,timer setting,fan speed,louver oper-ation,and air flow direction are displayed on the remote controller´s easy-to-read Liquid Crystal Dis-play(LCD).

3)Convenient 24-hour ON-OFF timer

The timer switches Mr.SLIM on and off automati-cally at the time you set. Once the timer is set,the remaining time is shown on the LCD

SAFETY PRECAUTION

Cautions for devices that use R407C refrigerant.

· Do not use the existing refrigerant piping.

-The old refrigerant and refrigerator oil in the existing piping contains a large amount of chlorine which may cause the refrigerator oil of the new unit to deteriorate.

· Use “low residual oil piping”.

-If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the refrigerator oil will result.

· 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.)

-If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result.

· Use Suniso 4GS or 3GS (small amount) as the refrigerator oil to coat flares and flange connection parts.

-The refrigerator oil used with the air conditioner is highly hygroscopic. If it is used, water may be mixed in and deterioration

of the refrigerator oil may result.

· Use liquid refrigerant to seal 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 R407.

-If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant 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.

[1] Service tools

Use the below service tools as exclusive tools for R407C refrigerant.

No. Tool name Specifications

1 Gauge manifold ·Only for R407C.

·Use the existing fitting SPECIFICATIONS. (UNF7/16)

·Use high-tension side pressure of 35kgf/cm

2 Charge hose ·Only for R407C.

·Use pressure performance of 52kgf/cm2or over.

3 Electronic scale 4 Gas leak detector ·Use the detector for R134a or R407C. 5 Adapter for reverse flow check. ·Attach on vacuum pump. 6 Refrigerant charge base. 7 Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)

·Cylinder with syphon

8 Refrigerant recovery equipment.

[2] Notice on repair service

·After recovering the all refrigerator in the unit, proceed to working.

·Do not release the refrigerant in the air.

·After complete the repair service, recharge the cycle with the specified amount of the liquid refrigerant.

or over.

[3] Refrigerant recharging

Gravimeter

Unit

(1) Refrigerant recharging process

1Direct enclosure from the bomb.

·Comfirm that R407C bomb on the market are syphon pipe.

·Leave the syphon pipe bomb raising and recharge it. (By liquid refrigerant)

(2) Recharge in refrigerant leakage case

·After recovering the all refrigerator in the unit, proceed to working.

·Do not release the refrigerant in the air.

·After complete the repair service, recharge the cycle with the specified amount of the

liquid refrigerant.

Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction.

Grill

Filters Remove dust and pollutants from inhaled air

Horizontal Air Outlet Sets airflow horizontal automatically during cooling or dehumidifying.

Air Intake Inhales air from room.

PART NAMES AND FUNCTIONS

● Indoor (Main) Unit

● Remote controller

● Operation buttons

TIMER button

This switches between continuous operation and the timer operation.

OPERATION SWITCH button

Press this button to switch the cooler electronic dry (dehumidify) automatic and heater modes.

TEMP ADJUSTMENT button

This sets the room temparature The temparature setting can be performed in 1°C units

Setting range

Cooler 19°C to 30°C

[PAR-F25MA]

● Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.

TIME SETTING button

This sets of switches the current time. start time and stop time.

LOUVER button

This switches the horizontal fan motion ON and OFF.

(This button does not operate in this model)

CHECK-TEST RUN button

Only press this button to perform an inspection check or test operation Do not use it for nomal operation.

AIR SPEED button

This sets the ventilation fan speed.

ON/OFF button

This swiches between the operation and stop modes each time it is pressed. The lamp on this button lights during operation.

AIR DIRECTION button

This adjusts the vertical angle of the ventilation.

FILTER button

This resets the filter service indication display.

● Display

CENTRALLY CONTROLLED display

This indicates when the unit is

controlled by optional features such as central control type remote controller.

TIMER display

This indicates when the continous

operation and time operation modes are set.

It also display the time for the timer

operation at the same time as when it is set.

OPERATION MODE display

This indicates the operation mode.

STANDBY display

This indicates when the standby

mode is set from the time the sleep operation starts until the heating air is discharged.

DEFROST display

This indicates when the defrost

operation is performed.

CLOCK display

The current time , start time and stop time can be displayed in tensecond intervals by pressing the time switch button. The start time or stop time is always displayed during the timer operation.

In this display example on the bottom left, a condition where all display lamps light is shown for explanation purposes although this differs from actual operation.

AIR DIRECTION display

The selected fan speed is displayed.

FAN SPEED display

This displays the air direction.

ROOM TEMPERATURE display

The temperature of the suction air is displayed during operation. The display range is 8° to 39°C. The display flashes 8°C when the actual temperature is less than 8° and flashes 39°C when the actual temperature is greater than 39°C.

Operation lamp

This lamp lights during operation, goes off when the unit stops and flashes when amalfunction occurs.

CHECK MODE

TEST RUN

This display lights in the check mode or when a test operation is performed.

display

FILTER display

CHECK display

This indicates when a malfunction

has occurred in the unit which should be checked.

SET TEMPERATURE display

This displays the selected setting temperature.

Caution

● Only the Power display lights when the unit is stopped and power supplied to the unit.

● When power is turned ON for the first time the (CENTRAL CTRL) display appears to go off momentarily but this is not a

malfunction.

● When the central control remote control unit, which is sold separately, is used the ON-OFF button, operation switch button and TEMP adjustment button do not operate.

● “NOT AVAILABLE” is displayed when the Air speed button are pressed.This indicates that this room unit is not equipped with the fan direction adjustment function and the louver function.

● When power is turned ON for the first time, it is normal that “H0” is displayed on the room temperature indication (For max. 2minutes). Please wait until this “H0” indication disappear then start the operation.

POWER display

This lamp lights when electricity is supplied to the unit.

This lamp lights when the filter need to be cleaned.

SPECIFICATION

4-1. Specification

Item

Power

Cooling capacity

Heating capacity

Cooling

Power supply

Heating Cooling

Starting current

Heating Cooling

Power

factor

Electric charocteristic

(munsell symbol)

dimensions

Out

Heating

Exteior

Height

Width

Depth

Heat exchanger

Fan x No

Air flow #3

External

static pressure

Fan motor

Output

Insulator

Air filter

Gas

Pipe

dimensions

side

Liquid

side

Drain pipe size

Noise level

PLFY-P32VKM PLFY-P40VKM PLFY-P50VKM PLFY-P63VKM PLFY-P80VKM PLFY -P100VKM PLFY-P125VKM

V•Hz Single phase 220V-240V 50 HZ

kcal/h 3,150 4,000 5,000 6,300 8,000 10,000 12,500 kcal/h 3,550 4,500 5,600 7,100 9,000 11,200 14,000

kw 0.13 0.13 0.14 0.15 0.17 0.21 0.22

kW 0.13 0.13 0.14 0.15 0.17 0.21 0.22

A 0.60 0.60 0.64 0.68 0.77 0.95 1.00

A 0.60 0.60 0.64 0.68 0.77 0.95 1.00 %------%-------

-Unit: Galranized sheets • Standard grill:ABS tesin acrylic coating Munsell<0.70Y 8.59/0.97> mm 298<30> 297<30> mm 660<760> 840<950> mm 660<760> 840<950> 1360<1470>

- Cross fin Turbo fan x 1

k/min 15-14.5-14-13 16-15-14-13 17-16-15-14 22-20-18-16.5 26- 24 -2 1. 5- 19 .5 30-27.5-25-22.5

Pa 0

kW 0.090

Polyethylene sheet

PP honey comb

[mm 12.7<1/2”> 15.88<5/8”> 19.05<3/4”> [mm 6.35<1/4”> 9.52<3/8”> 9.52<3/8”> [mm PVC pipe VP-25 connectable

dB(A) 35-34-32.5-31 37-35.5-34-32 39-38-36.5-35 38-35-32-30 42-39-36-34

Product weight

kg 19<3.7> 20<3.7> 28<5> 29<5> 37<9>

Note 1. Rating conditions(JIS B 8616)

Cooling: Indoor: 27°C DB. 19.5°CWB

outdoor: 35°C DB.

Heating: Indoor: 21°CDB

outdoor: 7°CDB. 6°CWB Note 2. The number indicated in < > is just for the grill. Note 3. Air flow and the noise level are indicated as High-Middium 1-Middium 2-Low.

4-2. Electrical parts specifications

Model

Parts

name

Tranrsformer T (Primary) 50/60Hz 220-240V (Secondry) (18.4V 1.7A)

Symbol

PLFY -P32VKM PLFY-P40VKM PLFY-P50VKM PLFY-P63VKM PLFY -P80VKM PLFY-P100VKM PLFY -P125VKM

Room temperature thermistor

Liquid pipe thermistor

Gas pipe thermistor TH23 Rresistance 0:/15k',10:/9.6k',20:/6.3k',25:/5.4k',30:/4.3k',40:/3.0k'

Fuse FUSE 250V 6.3A

(Indoor controller board)

Fan motor MF

(with Inner-thermostat)

Inner-thermostat

(Fan motor)

Fan motor capacitor C1 2+ x 400V 4+ x 460V

Vane motor MV

(with limit switch)

TH21 Resistance 0:/15k

TH22 Resistance 0:/15k',10:/9.6k',20:/6.3k',25:/5.4k',30:/4.3k',40:/3.0k'

6-pole OUTPUT 30W

OFF 125:±5:

ON 85:±20:

',10:/9.6k',20:/6.3k',25:/5.4k',30:/4.3k',40:/3.0k'

6-pole Output 90W

PA1-V30F

MC8 200V-240V

2.5/2W 5/6R.P.M

D17A6P90MS

OFF 130:±5:

ON 90:±20:

Drain-up mechanism DP

Drain sensor DS

Linear expansion valve LEV

Electric heater H2 240V 28.8W

(Condensation proof)

Power supply terminal block

Transmission terminal block

Heater resistance 82 Thermistor resistance 0:/15k

DC12V Stepping motor drive port

dimension 3.2

TB2 (L,N,;) 330V 30A

TB5 (M1,M2,S) 330V 30A

'/25:

(0~2000pulse)

EDM-402ME

',10:/9.6k',20:/6.3k',25:/5.4k',30:/4.3k',40:/3.0k'

PCD-4N230ME

INPUT 17/15W 36R/Hr

DC12V Stepping motor drive

port dimension 5.2

EDM-804ME

(0~2000pulse)

243

166

156

760

466

460

66 35

460

466

135

435

-2

115

65~80

298

253

-2

Air intake hole

Optional high-efficiency filter

Drain pipe

VP-25 connection

Control wire entry

Power line entry

Feeding hole

(Drain pump)

Suspension bolt M10

or W3/8

Suspension bolt lower edge

Ceiling surface

Leave space of 10~15mm between the

top surface of the unit and the ceiling slab

Refrigerant piping side

electric wire entry side

Vane motor

Grill

Air outlet hole

Air intake hole

4-Auto vanes

Air intake grill

Intake grill opening/closing side

Ceiling hole

Suspension bolt pitch

660

117

640

117

186

507

Suspension bolt pitch

Ceiling hole

690~710

25~3525~35

690~710

25~35 25~35

Drain hole

Terminal block for control

Terminal block for

power supply

NOTE 1.The electrical parts box may be removed during servic-

ing.When connecting the power line and the control

wire,provide enough length to the electric wires.

NOTE 2.When installing the optional high-efficiency filter,the

dimension between the transom and ceiling shall be

more than 440mm. Also,when installing the optional

fresh air intake casement or the multi-functional case-

ment,the dimension between the transom and ceiling

shall be more than 440mm. (The optional high-

efficiency filter can also be installed.)

OUTLINES AND DIMENSIONS

PLFY-P32VKM,PLFY-P40VKM PLFY-P50VKM,PLFY-P63VKM

(12.7mmdia)

Refrigerant pipe

flared connection

Unit : mm

1/2F

5/8F

(15.88mmdia)

Refrigerant pipe

flared connection

Models

1/4F

(6.35mmdia)

Refrigerant pipe

flared connection

PLFY-32VKM

PLFY-40VKM

3/8F

(9.52mmdia)

Refrigerant pipe

flared connection

PLFY-P50VKM

PLFY-P63VKM

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