Mitsubishi Electric CITY MULTI PLFY-P15VFM-E Manuale operativo

TECHNICAL & SERVICE MANUAL

Indoor unit

[Model Name] [Service Ref.]

PLFY-P15VFM-E.TH

PLFY-P20VFM-E.TH

PLFY-P25VFM-E.TH

PLFY-P32VFM-E.TH

PLFY-P40VFM-E.TH

PLFY-P50VFM-E.TH

CONTENTS

1. SAFETY PRECAUTION..........................2

2. PARTS NAMES AND FUNCTIONS........

3. SPECIFICATIONS.................................12

4. 4-WAY AIR FLOW SYSTEM.................14

5. OUTLINES AND DIMENSIONS............16

6. WIRING DIAGRAM...............................17

REFRIGERANT SYSTEM DIAGRAM......

8. TROUBLESHOOTING..........................

9. DISASSEMBLY PROCEDURE.............

PLFY-P15VFM-E

PLFY-P20VFM-E

PLFY-P25VFM-E

PLFY-P32VFM-E

PLFY-P40VFM-E

PLFY-P50VFM-E

Note:

• This manual describes service data

of the indoor units only.

• RoHS compliant products have

<G> mark on spec name plate.

PARTS CATALOG (OCB601)

No. OCH601

October 2015

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

R410A

INDOOR UNIT

Model name

indication

32 3

1SAFETY PRECAUTION

CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

Charge refrigerant from liquid phase of gas

cylinder.

If the refrigerant is charged from gas phase, composition

change may occur in refrigerant and the efficiency will be

lowered.

Do not use refrigerant other than R410A.

If other refrigerant (R22, etc.) is used, chlorine in refrige-

rant can cause deterioration of refrigerant oil etc.

Use a vacuum pump with a reverse flow check

valve.

Vacuum pump oil may flow back into refrigerant cycle and

that can cause deterioration of refrigerant oil, etc.

Use the following tools specifically designed for

use with R410A refrigerant.

The following tools are necessary to use R410A refrigerant.

Handle tools with care.

If dirt, dust or moisture enters into refrigerant cycle, that can

cause deterioration of refrigerant oil or malfunction of com-

pressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigera-

nt will change and the efficiency will be lowered.

Flare tool

Electronic refrigerant

charging scale

Vacuum pump adaptor

Size adjustment gauge

Gauge manifold

Torque wrench

Gas leak detector

Charge hose

Tools for R410A

If dirt, dust 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 new unit.

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 lubricant

will result.

Store the piping indoors, and both ends of the

piping sealed until just before brazing.

(Leave elbow joints, etc. in their packaging.)

The refrigerant oil applied to flare and flange

connections must be ester oil, ether oil or

alkylbenzene oil in a small amount.

Ventilate the room if refrigerant leaks during

operation. If refrigerant comes into contact with

a flame, poisonous gases will be released.

Never use any refrigerant other than that specified.

Doing so may cause a burst, an explosion, or fire when the

unit is being used, serviced, or disposed of.

Correct refrigerant is specified in the manuals and on the

spec labels provided with our products.

We will not be held responsible for mechanical failure,

system malfunction, unit breakdown or accidents caused

by failure to follow the instructions.

Use the specified refrigerant only.

OCH601

[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 a syphon type.

· Charging should be performed with 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

1Gauge manifold

· Only for R410A

· Use the existing fitting specifications. (UNF1/2)

· Use high-tension side pressure of 5.3MPa·G or over.

2Charge hose · Only for R410A

· Use pressure performance of 5.09MPa·G or over.

3Electronic scale

4Gas leak detector · Use the detector for R134a, R407C or R410A.

5Adaptor for reverse flow check · Attach on vacuum pump.

6Refrigerant charge base

7Refrigerant cylinder · Only for R410A · Top of cylinder (Pink)

· Cylinder with syphon

8Refrigerant recovery equipment

OCH601

54 5

Auto Air Swing Vane

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.

2PARTS NAMES AND FUNCTIONS

2-1. Indoor Unit

OCH601

Function buttons

F1 F2 F3 F4

Press to turn ON/OFF the indoor unit.

ON/OFF button

When the backlight is off, pressing any button turns

the backlight on and does not perform its function.

(except for the (ON/OFF) button)

The functions of the function buttons change depending on

the screen. Refer to the button function guide that appears

at the bottom of the LCD for the functions they serve on a

given screen.

When the system is centrally controlled, the button function

guide that corresponds to the locked button will not appear.

Press to save the setting.

SELECT button

Press to return to the previous screen.

RETURN button

Press to bring up the Main menu.

MENU button

Operation settings will appear.

When the backlight is off, pressing any button turns the

backlight on and it will stay lit for a certain period of time

depending on the screen.

Backlit LCD

This lamp lights up in green while the unit is in operation.

It blinks while the remote controller is starting up or when

there 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 to go to the next page.

Function button F4

Fri

Room

Set temp.

Mode Temp. Fan

Cool Auto

Main

Main display:

Cursor Page

Main menu

Vane·Louver·Vent. (Lossnay)

High power

Timer

Weekly timer

OU silent mode

Function guide

2-2. WIRED REMOTE CONTROLLER <PAR-32MAA>

The functions which can be used are restricted according to each model.

: Supported : Unsupported

Function PAR-32MAA PAR-21MAA

Slim City multi

Body Product size H × W × D (mm) 120 × 120 × 19 120 × 130 × 19

LCD Full Dot LCD Partial Dot LCD

Backlight

Energy-saving Energy-saving operation schedule

Automatic return to the preset temperature

Restriction Setting the temperature range restriction

Function Operation lock function

Weekly timer

ON/OFF timer

High Power

Manual vane angle

Wired remote controller function

OCH601

Fri

Mode Temp. Fan

Room

Cool Auto

Set temp.

Fri

Cool

Mode Temp. Fan

AutoSet temp.

Fri

Mode Temp. Fan

Room

Cool Auto

Set temp.

Fri

Cool

Mode Temp. Fan

AutoSet temp.

The main display can be displayed in two different modes: "Full" and "Basic".

he factory setting is "Full". To switch to the "Basic" mode, change the setting on the Main display setting.

All icons are displayed for explanation.

Most settings (except ON/OFF, mode, fan speed, temperature) can be made from the Menu screen.

Indoor unit operation mode appears here.

1Operation mode

Preset temperature appears here.

2Preset temperature

Current time appears here.

3Clock (See the Installation Manual.)

4Fan speed

Fan speed setting appears here.

Functions of the corresponding buttons appear here.

5Button function guide

Appears when the ON/OFF operation is centrally controlled.

Appears when the operation mode is centrally controlled.

Appears when the preset temperature is centrally controlled.

Appears when the lter reset function is centrally controlled.

Indicates when lter needs maintenance.

Current room temperature appears here.

1Room temperature

(See the Installation Manual.)

Appears when the buttons are locked.

Appears when the On/Off timer or Night setback function is

enabled.

Appears when the Weekly timer is enabled.

Appears while the units are operated in the energy-save

mode.

Appears when the built-in thermistor on the remote control-

ler is activated to monitor the room temperature.

appears when the thermistor on the indoor unit is acti-

vated to monitor the room temperature.

Appears when the units are operated in the energy-save

mode with 3D i-See sensor.

Indicates the louver setting.

Indicates the ventilation setting.

Appears when the preset temperature range is restricted.

Indicates the vane setting.

23 45 678

)

OCH601

Not all functions are available on all models of indoor units.

Energy saving

Auto return

Schedule

Night setback

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

Weekly 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

Menu structure

Filter Information

Error Information

3D i-see sensor

OCH601

Setting and display items Setting details

Vane · Louver · Vent.

(Lossnay)

Use to set the vane angle.

• Select a desired vane setting from 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.

Timer ON/OFF

timer*

Use to set the operation ON/OFF times.

• Time can be set in 5-minute increments.

Auto-Off

timer

Use to set the Auto-Off time.

• Time can be set to a value from 30 to 240 in 10-minute increments.

Weekly timer* Use to set the weekly operation ON/OFF times.

• Up to 8 operation patterns can be set for each day.

(Not valid when the ON/OFF timer is enabled.)

Restriction Temp. range Use to restrict the preset temperature range.

• Different temperature ranges can be set for different operation modes.

Operation

lock

Use to lock selected functions.

• The locked functions cannot be operated.

Energy

saving

Auto return Use to get the units to operate at the preset temperature after performing energy-save

operation for a specied time period.

• Time can be set to a value from 30 and 120 in 10-minute increments.

(This function will not be valid 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 setback settings.

• Select "Yes" to enable the setting, and "No" to disable the setting. The temperature range and

the start/stop times can be set.

Filter information Use to check the lter status.

• The lter sign can be reset.

Error information Use to check error information when an error occurs.

• Check code, error source, refrigerant address, unit model, manufacturing number, contact

information (dealer's phone number) can be displayed.

(The unit model, manufacturing number, and contact information need to be registered in

advance to be displayed.)

Maintenance Manual

vane angle

Use to set the vane angle for each vane to a xed position.

3D i-See

sensor

Use to set the following functions for 3D i-See sensor.

• Air distribution • Energy saving option • Seasonal airow

Initial setting Clock Use to set the current time.

Main display Use to switch between "Full" and "Basic" modes for the Main display.

• The initial setting is "Full."

Contrast Use to adjust screen contrast.

Language

selection

Use to select the desired language.

Main menu list

* Clock setting is required.

Continue to the next page

OCH601

Setting and display items Setting details

Service

Function setting

(City Multi)

Use to make settings for indoor unit's functions.

Input

maintenance

Select "Input maintenance Info." from the Service menu to bring up the Maintenance

information screen.

The following settings can be made from the Maintenance Information screen.

• Model name input • Serial No. input • Dealer information input

Function setting

(

City Multi only)

Make the settings for the indoor unit functions via the remote controller as necessary.

LOSSNAY

setting

(City Multi 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 and error

history can be checked.

Self check Error history of each unit can be checked via the remote controller.

Maintenance

password

Use to change the maintenance password.

Remote

controller

check

When the remote controller does not work properly, use the remote controller checking

function to troubleshoot the problem.

OCH601

10 11

°F°C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

OFF

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

•

Display Section

For the purpose of explanation,

all parts of the display are shown.

During actual operation, only

the relevant items will be lit.

Identifies the current operation

Shows the operating mode, etc.

*Multilanguage display is available.

“Centrally Controlled” indicator

Indicates that operation from the

remote controller has been prohib-

ited by a master controller.

“Timer is Off” indicator

Indicates that the timer is off.

Temperature Setting

Shows the target temperature.

Day-of-Week

Shows the current day of the week.

Time/Timer Display

Shows the current time, unless the simple or Auto Off

timer is set.

If the simple or Auto Off timer is set, the time to be

switched off is shown.

“Sensor” indication

Displays when the remote controller

sensor is used.

“Locked” indicator

Indicates that remote controller but-

tons have been locked.

“Clean The Filter” indicator

To be displayed on when it is time to

clean the filter.

Timer indicators

The indicator comes on if the corre-

sponding timer is set.

Up/Down Air Direction indica-

tor

The indicator shows the direc-

tion of the outcoming airflow.

“One Hour Only” indicator

Room Temperature display

Shows the room temperature. The room

temperature display range is 8 to 39:.

The display blinks if the temperature

is less than 8:or 39:or more.

Louver display

Indicates the action of the swing louver.

Does not appear if the louver is not

running.

(Power On indicator)

Indicates that the power is on.

Fan Speed indicator

Shows the selected fan speed.

Ventilation indicator

Appears when the unit is running in

Ventilation mode.

Operation Section

Temperature setting buttons

Down

Timer Menu button

(Monitor/Set button)

Mode button (Return button)

Set Time buttons

Back

Ahead

Timer ON/OFF button

(Set Day button)

Opening the

cover

ON/OFF button

Fan Speed button

Filter button

(<Enter> button)

Test Run button

Check button (Clear button)

Airflow Up/Down button

Louver button

( Operation button)

To return operation

number

Ventilation button

( Operation button)

To go to next operation

number

Note:

“PLEASE WAIT” message

This message is displayed for approximately 3 minutes when power is supplied to the indoor unit or when the unit is recovering from a power failure.

“NOT AVAILABLE” message

This message is displayed if an invalid button is pressed (to operate a function that the indoor unit does not have).

If a single remote controller is used to operate multiple indoor units simultaneously that are different types, this message will not be displayed as

far as any of the indoor units is equipped with the function.

Built-in temperature sensor

Displays if the airflow is set to

low or downward during COOL

or DRY mode. (Operation varies

according to model.)

The indicator goes off in 1 hour,

when the airflow direction

also changes.

2-3. WIRED REMOTE CONTROLLER <PAR-21MAA>

OCH601

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