Mitsubishi PKFY-P40VHM-ER1, PKFY-P32VHM-ER1, PKFY-P40VHM-ER2, PKFY-P50VHM-E, PKFY-P50VHM-ER1 Technical & Service Manual

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TECHNICAL & SERVICE MANUAL

CONTENTS

1. TECHNICAL CHANGES .........................2

2. SAFETY PRECAUTION

..........................

3. PART NAMES AND FUNCTIONS

..........

4. SPECIFICATION

...................................

5. OUTLINES AND DIMENSIONS

............

6. WIRING DIAGRAM

...............................

7. REFRIGERANT SYSTEM DIAGRAM

........

8. TROUBLESHOOTING

..........................

9. DISASSEMBLY PROCEDURE

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Indoor unit [Model names] [Service Ref.]

No. OCH442

REVISED EDITION-B

INDOOR UNIT

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

R410A

Note:

• This manual describes only service data of the indoor units.

• RoHS compliant products have <G> mark on the spec name plate.

December 2012

PARTS CATALOG (OCB442)

Revision:

• PKFY-P32/40/50VHM-ER2 have been added in REVISED EDITION-B.

• Some descriptions have been modified.

• Plase void OCH442 REVISED EDITION-A.

PKFY-P32VHM-E PKFY-P32VHM-ER1 PKFY-P32VHM-ER2 PKFY-P40VHM-E PKFY-P40VHM-ER1 PKFY-P40VHM-ER2 PKFY-P50VHM-E PKFY-P50VHM-ER1 PKFY-P50VHM-ER2

PKFY-P32VHM-E

PKFY-P40VHM-E

PKFY-P50VHM-E

TECHNICAL CHANGES

PKFY-P32VHM-ER1 PKFY-P32VHM-ER2 PKFY-P40VHM-ER1 PKFY-P40VHM-ER2 PKFY-P50VHM-ER1 PKFY-P50VHM-ER2

1. INDOOR CONTROLLER BOARD (I.B.) has been changed. (S/W version up)

PKFY-P32VHM-E PKFY-P32VHM-ER1 PKFY-P40VHM-E PKFY-P40VHM-ER1 PKFY-P50VHM-E PKFY-P50VHM-ER1

1. INDOOR CONTROLLER BOARD (I.B.) has been changed. (S/W version up)

2. Fan speed has been changed. (4 speed → 3 speed)

3. Heat exchanger has been changed.

PKFY-P32VHM-E PKFY-P40VHM-E PKFY-P50VHM-E

Service parts of room temp. thermistor (TH21) has been changed. (T7W E05 202 → R01 N20 202) (The position to be attached has been changed. Band/PVC tube have been added.)

OCH442B

SAFETY 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 refrigerant 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 compressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigerant 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 compressor.

If large amount of mineral oil enters, that can cause deterioration 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.

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.

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.

OCH442B

Gravimeter

Unit

[3] Service tools

Use the below service tools as exclusive tools for R410A refrigerant.

[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.

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

No.

Tool name

Specifications

Gauge manifold

· Only for R410A

· Use the existing fitting

specifications

. (UNF1/2)

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

Charge hose

· Only for R410A

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

Electronic scale

—

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

Adaptor for reverse flow check · Attach on vacuum pump.

Refrigerant charge base

—

Refrigerant cylinder

· Only for R410A · Top of cylinder (Pink)

· Cylinder with syphon

Refrigerant recovery equipment

—

OCH442B

PART NAMES AND FUNCTIONS

3-1. Indoor unit

Filter

Air intake

Louver

Air outlet

Vane

3-2. Wireless remote controller

ON/OFF TEMP

FAN

VANE

TEST RUN

AUTO STOP

AUTO START

min

LOUVER

MODE

CHECK

RESETSET CLOCK

MODEL SELECT

NOT AV AILABLE

CHECK

TEST RUN

°C

AMPM

VANE CONTROL button

Used to change the air flow direction.

CLOCK button

RESET button

SET button

ON/OFF button

The unit is turned ON and OFF alternately each time the button is pressed.

LOUVER button

Changes left/right airflow direction. (Not available for this model.)

MODE SELECT button

Used to switch the operation mode between cooling, drying, fan, heating and auto mode.

CHECK-TEST RUN buttons

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

FAN SPEED SELECT button

Used to change the fan speed.

TIMER display

Displays when in timer operation or when setting timer.

buttons

SET TEMPERATURE button sets any desired room temperature.

CLOCK display

Displays the current time.

“ ” “ ” display

Displays the order of timer operation.

“ ” “ ” display

Displays whether timer is on or off.

+ In case the outdoor unit is cool only type,

the heating and auto mode are not available.

Buttons used to set the “hour and minute” of the current time and timer settings.

h and min buttons

display

FAN SPEED display indicates which fan speed has been selected.

display

The vertical direction of air flow is indicated.

display

Blinks when model is selected.

display

CHECK and TEST RUN display indicate that the unit is being checked or test-run.

display

OPERATION MODE display Operation mode display indicates which operation mode is in effect.

TIMER CONTROL buttons

AUTO STOP (OFF timer): when this switch is set, the air conditioner will be automatically stopped at the preset time. AUTO START (ON timer): when this switch is set, the air conditioner will be automatically started at the preset time.

MODEL SELECT

CHECK

TEST RUN

SET TEMP. display indicates the set desired temperature.

Lights up while the signal is transmitted to the indoor unit when the button is pressed.

OCH442B

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

Main display : Press to decrease temperature. Main menu : Press to move the cursor up.

Function button

Main display : Press to increase temperature. Main menu : Press to go to the previous page.

Function button

Main display : Press to change the fan speed. Main menu : Press to go to the next page.

Function button

Fri

Room

Set temp.

Mode Tem p. Fa n

Cool Auto

Main

Main display:

Cursor Page

Main menu

Vane·Louver·Vent. (Lossnay) High power Timer Weekly timer OU silent mode

Function guide

3-3. WIRED REMOTE CONTROLLER <PAR-30MAA/PAR-31MAA>

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

: Supported : Unsupported

Function

PAR-30MAA/PAR-31MAA

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

OCH442B

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". T

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.

Operation mode

Preset temperature appears here.

Preset temperature

Current time appears here.

Clock (See the Installation Manual.)

Fan speed

Fan speed setting appears here.

Functions of the corresponding buttons appear here.

Button 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 ﬁ lter reset function is centrally controlled.

Indicates when ﬁ lter needs maintenance.

Current room temperature appears here.

Room 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 controller is activated to monitor the room temperature.

appears when the thermistor on the indoor unit is acti-

vated to monitor the room temperature.

Indicates the vane setting.

Indicates the louver setting.

Indicates the ventilation setting.

Appears when the preset temperature range is restricted.

OCH442B

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

Filter information Error information

Energy saving

Auto return Schedule

Night setback

Main menu

Press the

button.

Move the cursor to the desired item with the

and

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

Service menu

Input maintenance info. Function setting Lossnay (City Multi only) Check Self check Maintenance password Remote controller check

Test run

Clock

Drain pump test run

Auto descending panel

Menu structure

OCH442B

Setting and display items Setting details

Vane · Louver · Vent. (Lossnay)

Use to set the vane angle.

• Select a desired vane setting from ﬁ 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. * Clock setting is required.

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.

Filter information Use to check the ﬁ lter status.

• The ﬁ lter sign can be reset.

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

• Error 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.

Weekly timer Use to set the weekly operation On / Off times.

• Up to eight operation patterns can be set for each day. * Clock setting is required. * Not valid when the On/Off timer is enabled.

Energy saving

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

operation for a speciﬁ 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 four 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. * Clock setting is required.

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.

* Clock setting is required.

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.

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 ﬁ xed position.

Initial setting

Main/Sub

When connecting two 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 default setting is "Full."

Contrast

Use to adjust screen contrast.

Main menu list

OCH442B

+ 21 hidden pages

Mitsubishi PKFY-P40VHM-ER1, PKFY-P32VHM-ER1, PKFY-P40VHM-ER2, PKFY-P50VHM-E, PKFY-P50VHM-ER1 Technical & Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual