Mitsubishi Electric CITY MULTI PLFY-P20VEM-E Manuale operativo

PARTS CATALOG (OCB657)

No. OCH657

December 2016

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

CONTENTS

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

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

3. SPECIFICATIONS.................................11

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

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

6. WIRING DIAGRAM...............................20

REFRIGERANT SYSTEM DIAGRAM......

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

9. SPECIAL FUNCTION........................... 30

10. DISASSEMBLY PROCEDURE............. 33

Notes:

• This manual describes service

data of the indoor units only.

• RoHS compliant products have

<G> mark on the spec name

plate.

INDOOR UNIT

Model name

indication for

MAIN UNIT Model name

indication for GRILLE

Indoor unit

[Model names] [Service Ref.]

PLFY-P20VEM-E PLFY-P20VEM-E.UK

PLFY-P25VEM-E PLFY-P25VEM-E.UK

PLFY-P32VEM-E PLFY-P32VEM-E.UK

PLFY-P40VEM-E PLFY-P40VEM-E.UK

PLFY-P50VEM-E PLFY-P50VEM-E.UK

PLFY-P63VEM-E PLFY-P63VEM-E.UK

PLFY-P80VEM-E PLFY-P80VEM-E.UK

PLFY-P100VEM-E PLFY-P100VEM-E.UK

PLFY-P125VEM-E PLFY-P125VEM-E.UK

Grille model

[Model names] [Service Ref.]

PLP-6EA PLP-6EA PLP-6EAR1

PLP-6EAE PLP-6EAE PLP-6EAER1

PLP-6EAL PLP-6EAL PLP-6EALR1

PLP-6EALE PLP-6EALE PLP-6EALER1

PLP-6EAJ PLP-6EAJ

PLP-6EAJE PLP-6EAJE

PLP-6EALM PLP-6EALM

PLP-6EALME PLP-6EALME

WIRED REMOTE

CONTROLLER

(Option)

WIRELESS REMOTE

CONTROLLER

(Option)

32 3

Cautions for units utilizing refrigerant R410A

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.

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.

Use the specified refrigerant only.

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.

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

contain 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.

Ventilate the room if refrigerant leaks during

operation. If refrigerant comes into contact with

a flame, poisonous gases will be released.

1SAFETY PRECAUTION

OCH657

[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

(1) Check that cylinder for R410A available on the market is syphon type.

(2) Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

Electronic weighing scale

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 of 5.09MPa·G or over.

3 Electronic scale

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

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

6 Refrigerant charge base

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

·Cylinder with syphon

8 Refrigerant recovery equipment

OCH657

54 5

2PARTS NAMES AND FUNCTIONS

Drain pipe

Filter

Vane

Gas pipe

Liquid pipe

Air outlet

Air intake

(Intake grille)

i-see Sensor

(Option)

Signal receiver

(Option)

2-1. Indoor unit

OCH657

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>

Wired remote controller function

OCH657

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 2 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 45 789

)

Appears while the outdoor units are operated in the silent

mode.

OCH657

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

OU silent mode

Filter Information

Error Information

3D i-see Sensor

OCH657

Setting and display items Setting details

Vane · Louver · Vent.

(Lossnay)

Use to set the vane angle.

• Select a desired vane setting from 5 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.)

OU silent mode* Use to set the time periods in which priority is given to quiet operation of outdoor

units over temperature control. Set the Start/Stop times for each day of the week.

• Select the desired silent level from "Normal", "Middle" and "Quiet".

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 Auto descending

panel

Auto descending panel (Optional parts) UP/DOWN you can do.

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

Main menu list

* Clock setting is required.

Continue to the next page

OCH657

Setting and display items Setting details

Initial setting Main/Sub When connecting 2 remote controllers, one of them needs to be designated as a sub

controller.

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.

Display details Make the settings for the remote controller related items as necessary.

Clock: The initial 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.

Auto mode Whether or not to use the AUTO mode can be selected by using the button.

This setting is valid only when indoor units with the AUTO mode function are connected.

Administrator

password

The administrator password is required to make the settings for the following items.

• Timer setting • Energy-save setting • Weekly timer setting

• Restriction setting • Outdoor unit silent mode setting • Night set back

Language selection

Use to select the desired language.

Service Test run Select "Test run" from the Service menu to bring up the Test run menu.

• Test run • Drain pump test run

Input maintenance

info.

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)

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

necessary.

LOSSNAY

(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 check-

ing function to troubleshoot the problem.

OCH657

2-3. Wireless remote controller

Operation mode

Cool Dry

Fan Auto

(single set point)

Heat 2Auto

(dual set point*)

Temperature setting

The units of temperature can be changed. For

details, refer to the Installation Manual.

Not available

Appears when a non-supported func-

tion is selected.

Battery replacement indicator

Appears when the remaining battery

power is low.

Vane setting

Step 1 Step 2 Step 3 Step 4 Step 5 Swing Auto

Fan speed setting

Set Temperature buttons

Set Time button (Sets the time)

Airow button (Changes up/down airow 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 available

Weekly timer ON/OFF button

(not available)

3D i-see Sensor (Air distribution)

Default Direct Indirect When Direct or Indirect

is selected, the vane

setting is set to “Auto”.

* The initial setting is necessary.

Refer to Installation manual.

OCH657

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