Mitsubishi PKFY-P20VBM-ER2, PKFY-P15VBM-ER3, PKFY-P20VBM-ER3, PKFY-P25VBM-E, PKFY-P20VBM-E Technical & Service Manual

...

Download

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

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

Indoor unit [Model names] [Service Ref.]

No. OCH418

REVISED EDITION-C

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

Model name indication

PARTS CATALOG (OCB418)

PKFY-P15VBM-E PKFY-P15VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-E PKFY-P20VBM-ER1 PKFY-P20VBM-ER2 PKFY-P20VBM-ER3 PKFY-P25VBM-E PKFY-P25VBM-ER1 PKFY-P25VBM-ER2 PKFY-P25VBM-ER3

Revision:

• PKFY-P15/20/25VBM-ER3 have been added in REVISED EDITION-C.

• Some descriptions have been modified.

• Please void OCH418 REVISED EDITION-B.

PKFY-P15VBM-E

PKFY-P20VBM-E

PKFY-P25VBM-E

TECHNICAL CHANGES

PKFY-P15VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-ER2 PKFY-P20VBM-ER3 PKFY-P25VBM-ER2 PKFY-P25VBM-ER3

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

PKFY-P15VBM-E PKFY-P15VBM-ER2 PKFY-P20VBM-ER1 PKFY-P20VBM-ER2 PKFY-P25VBM-ER1 PKFY-P25VBM-ER2

HEAT EXCHANGER and WATER CUT have been changed.

PKFY-P20VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-E PKFY-P25VBM-ER1

INDOOR CONTROLLER BOARD (I.B.) has been changed.

OCH418C

SAFETY PRECAUTION

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.

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.

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.

OCH418C

[1] Cautions for service

(1) Perform service after collecting the refrigerant left in the 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.)

Gravimeter

Unit

[3] Service tools

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

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

—

OCH418C

PART NAMES AND FUNCTIONS

3-1. Indoor unit

Filter

Grille

Louver

Air outlet

Air intake

Vane

OCH418C

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

3-2. 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

OCH418C

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.

OCH418C

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

OCH418C

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

OCH418C

Setting and display items Setting details

Initial setting Display

details

Make the settings for the remote controller related items as necessary. Clock: The factory 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

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

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 cord: 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

Take the following steps to change the maintenance password.

Remote controller check

When the remote controller does not work properly, use the remote controller checking function to troublushoot the problem.

OCH418C

°F°C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON OFF

Hr 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 purposes of this 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 prohibited 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 buttons 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 corresponding timer is set.

Up/Down Air Direction indicator

The indicator shows the direction of the outcoming airflow.

“One Hour Only” indicator

Room Temperature display

Shows the room temperature. The room temperature display range is 8 - 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 Up

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)

T o 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 one hour, at which time the airflow direction also changes.

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

OCH418C

3-4. 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.

* If 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.

OCH418C

1313

*1 Nominal cooling conditions

Note :

Indoor :

Outdoor :

Pipe length :

Level difference :

27°CDB/19°CWB (81°FDB/66°FWB) 35°CDB (95°FDB)

7.5 m (24-9/16 ft) 0 m (0 ft)

*2 Nominal cooling conditions

27°CDB/19.5°CWB (81°FDB/67°FWB) 35°CDB (95°FDB) 5 m (16-3/8 ft) 0 m (0 ft)

*3 Nominal heating conditions

Unit converter

20°CDB (68°FDB) 7°CDB/6°CWB (45°FDB/43°FWB)

7.5 m (24-9/16 ft) 0 m (0 ft)

* Due to continuing improvement, above specification may be subject to change without notice.

* Nominal conditions *

1, *3 are subject to JIS B8615-1.

kcal/h = kW × 860 Btu/h = kW × 3,412 cfm = m

/min × 35.31

lb = kg/0.4536

*Above specification data is subject to rounding variation.

Service ref.

Power source Cooling capacity (Nominal)

Heating capacity (Nominal )

External finish External dimension H x W x D

Net weight Heat exchanger Fan

Noise level (Low-Mid2-Mid1-High) (measured in anechoic room) Insulation material Air filter Protection device Refrigerant control device Connectable outdoor unit Diameter of refrigerant pipe Field drain pipe size Standard attachment Remark

Power input Current input

Type x Quantity External static press. Motor type Motor output Driving mechanism Airflow rate (Low-Mid2-Mid1-High)

Liquid Gas

Document Accessory Optional parts

External LEV Box

Installation

kW kcal/h Btu/h kcal/h kW A kW kcal/h Btu/h kW A

mm in. kg (lb)

Pa mmH

/min L/s cfm dB <A>

mm (in.) mm (in.) mm (in.)

*1 *1 *1 *2

*3 *3 *3

(R410A) (R410A)

Installation Manual, Instruction Book

1-phase 220-240V 50Hz, 1-phase 220V 60Hz

Cross fin (Aluminum fin and copper tube)

1-phase induction motor

Direct-driven by motor

Polyethylene sheet

PP honeycomb

Fuse

LEV

R410A CITY MULTI

PKFY-P20VBM-E PKFY-P20VBM-ER1 PKFY-P20VBM-ER2 PKFY-P20VBM-ER3

Plastic, MUNSELL (1.0Y 9.2/0.2)

2.2 1,900 7,500 2,000

0.04

0.20

2.5 2,200 8,500

0.04

0.20

295 × 815 × 225

11-5/8" × 32-1/8" × 8-7/8"

10 (23)

Line flow fan × 1

0 0

0.017

4.9 - 5.2 - 5.6 - 5.9 82 - 87 - 93 - 98

173 - 184 - 198 - 208

29 - 31 - 34 - 36

PKFY-P25VBM-E PKFY-P25VBM-ER1 PKFY-P25VBM-ER2 PKFY-P25VBM-ER3

2.8 2,400 9,600 2,500

0.04

0.20

3.2 2,800

10,900

0.04

0.20

295 × 815 × 225

11-5/8" × 32-1/8" × 8-7/8"

10 (23)

Line flow fan × 1

0 0

0.017

4.9 - 5.2 - 5.6 - 5.9 82 - 87 - 93 - 98

173 - 184 - 198 - 208

29 - 31 - 34 - 36

I.D. 16mm (5/8")

PAC-SG95LE-E

I.D. 16mm (5/8")

PAC-SG95LE-E

ø6.35 (ø1/4") ø12.7 (ø1/2")

Flare Flare

ø6.35 (ø1/4") ø12.7 (ø1/2")

Flare Flare

PKFY-P15VBM-E PKFY-P15VBM-ER2 PKFY-P15VBM-ER3

1.7 1,450 5,800 1,500

0.04

0.20

1.9 1,600 6,500

0.04

0.20

295 × 815 × 225

11-5/8" × 32-1/8" × 8-7/8"

10 (23)

Line flow fan × 1

0 0

0.017

4.9 - 5.0 - 5.2 - 5.3 82 - 83 - 87 - 88

173 - 177 - 184 - 187

29 - 31 - 32 - 33

I.D. 16mm (5/8")

PAC-SG95LE-E

ø6.35 (ø1/4") ø12.7 (ø1/2")

Flare Flare

Details on foundation work, duct work, insulation work, electrical wiring, power source switch, and other items shall be referred to the Installation Manual.

SPECIFICATION

4-1. SPECIFICATIONS

OCH418C

4-2. ELECTRICAL PARTS SPECIFICATIONS

Parts name

Service ref.

Symbol

TH21

TH22

TH23

FUSE

LEV

TB2

TB5

Resistance 0/15k, 10/9.6k, 20/6.3k, 25/5.4k, 30/4.3k, 40/3.0k

250V 6.3A

4-Pole Output 17W / PS4V17-KB

1.5 × 440V

MSFBC20 DC12V

(L, N, ) 250V 20A

(M1, M2) 250V 10A

Liquid pipe thermistor

Gas pipe thermistor

Fan motor capacitor

Linear expansion valve

PKFY-P20VBM-E PKFY-P20VBM-ER1 PKFY-P20VBM-ER2 PKFY-P20VBM-ER3

PKFY-P25VBM-E PKFY-P25VBM-ER1 PKFY-P25VBM-ER2 PKFY-P25VBM-ER3

Room temperature thermistor

Fuse (Indoor controller board)

Fan motor (with thermal fuse)

Vane motor (with limit switch)

Power supply terminal block

Transmission terminal block

DC12V Stepping motor drive

Port :3.2 (0~2000pulse)

PKFY-P15VBM-E PKFY-P15VBM-ER2 PKFY-P15VBM-ER3

OCH418C

1515

M1 M2

60mm or more for

left and left back piping.

Terminal block

Air intake

(Direction)

Terminal block Detailed

Address board

The first side

The second side

Transmission (DC 24-30V)

MA-remote controller cable (DC8.7-13V)

There is not MA-remote controller terminal block.

Connection with MA-remote controller refers to Note.3

Note.1 Use M10 or W3/8 screw for installation plate.

Note.2 Extension piping side.

Note.3 In case of connecting MA-remote controller, please connect

MA-remote controller cable (accessory) to the connector.

Power supply (220-240V)

Transmission

Power supply

Address board

Detailed

Address setting digit

Mode selection

Connection No.

Address board

Knockout hole of

right piping

Knockout hole of

remote controller wiring

(Direction)

Knock of hole

Knockout hole for

remocon wiring

4-4.5%35 hole

Installation plate

Knockout hole for

under piping

16 2.5

45 91.5

Installation plate

balance point hole

4-4.5%40 hole

4-4.5%37 hole

12- 2.8 hole:

4-:9 hole

8-: 4.3 hole

87- 5.1 hole:

Piping hole : 65

Detail of installation plate

Detailed figure dwg(A B C)

(Knockout hole)

Knockout hole for

left piping

24.4

4510

162.5

504

Air intake

Air outlet

(Direction)

Installation plate

Installation space

:16mm(I.D)

1/2F(:12.7mm)

1/4F(:6.35mm)

Drain pipe

Liquid pipe

Gas pipe

Refrigerant

piping

Min 22mm Min 20mm

Min 100mm

Max 90mm

Min 50mm

Receiver

Operation lamp

DEFROST/STAND BY lamp

Emergency operation

switch <Heating>

Emergency operation

switch <Cooling>

37.8

640

Air intake

815

115

106.7

295

640

Air intake

695

Air outlet

225 5

110

116

450

Gas pipe

520

Liquid pipe

100.614

783

74.6

97.5

180

159

27.5

125

298

235 205

175

170

128

124

159

168

113

135

110

328

102.5

122.5

133

72.5

47.5

22.5

407.5

328

295

260

225

190

155

120

407.5

298 260 225

190 155 120 85

5044

175

235

170

205

Air outlet

*3 Address board is protected

by a plastic cover.

Remove the screw holding

the cover with screw-driver

at the time of address setting.

Drain hose (Effective length: 640)

OUTLINES AND DIMENSIONS

PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P25VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-ER1 PKFY-P15VBM-ER2 PKFY-P20VBM-ER2 PKFY-P25VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-ER3 PKFY-P25VBM-ER3

Unit: mm

OCH418C

Mark Meaning

LED1

Main power supply

Main power supply (indoor unit:220-240V) power on lamp is lit

Function

LED on indoor board for service

OFF

1234

MODELS SW2

P20

OFF

1234

MODELS SW2

P25

LED2

Power supply for MA-Remote controller

Power supply for MA-Remote controller on lamp is lit

Legend

Symbol

I.B

CN32 CN51 CN52 SW2

SW2

SW3

TH21

TH22

Remote switch Centrally control Remote indication Capacity code

Mode selection

Room temp.detection

(0/15k,25/5.4k)

Pipe temp.detection/liquid

(0/15k,25/5.4k)

Name

Indoor controller board

P.B

W.B

Indoor power board

ZNR Varistor

FUSE

Fuse (6.3A 250V)

F.C

Fan phase control

MF Fan motor

Capacitor (fan motor)

Vane motor

LEV

Linear expansion valve

Connector

Switch

Thermistor

Symbol

TB2 TB5

Power supply Transmission

Address board

Mode selection

Name

Symbol

Name

Terminal block

TH23

Pipe temp.detection/Gas

(0/15k,25/5.4k)

Note

1. At servicing for outdoor unit, always follow the wiring diagram of outdoor unit.

2. In case of connecting MA-remote controller, please connect MA-remote controller cable in an accessory to the connector . (Remote controller wire is non-polar.)

3. In case of using M-NET, please connect to TB5 (Transmission line is non-polar.)

4. Symbols used in wiring diagram above are, : terminal block, : connector

5. The setting of the SW2 dip switches differs in the capacity. For the detail, refer to the fig :*1.

6. Please set the switch SW5 according to the power supply voltage.

Set SW5 to 240V side when the power supply is 230 and 240 volts. When the power supply is 220 volts, set SW5 to 220V side.

A.B

SW1

SW5

RU BZ LED1 LED (Operation indicator: Green)

LED (Preparation for heating: Orange) Emergency operation (Heat) Emergency operation (Cool)

LED2

SW11 SW12 SW14

Voltage selection

Address setting 1s digit Address setting 10ths digit

Connection No.

Switch

Receving unit Buzzer

Wireless remote controller board

RED

WHT(PNK)

BLU ORN YLW

CN5V VANE (BLU)

CN52CN51

CN41

CN32

CN60

LEV

(WHT)

BRN RED BLU ORN YLW WHT

CN3A MAREMOCON

(BLU)

FAN

(GRN)

CND

(RED)

CN2M M-NET

(BLU)

TO OUTDOOR UNIT BC CONTROLLER M-NET REMOTE CONTROLLER DC24-30V

BREAKER (16A)

FUSE (16A)

PULL BOX

TB2

TO NEXT INDOOR UNIT

POWER SUPPLY ~/N 220-240V 50Hz ~/N 220V 60Hz

RED

WHT

BLK

BLU

GRN /YLW

BLU

TB5

TO MA-REMOTE CONTROLLER DC8.7-13V

ORN

ZNR

FUSE

250V

6.3A

LED1

CN35P

(BLU)

F.C

CN53P (RED)

CN53M

(RED)

CN35M

(BLU)

LED2

CN29

GAS

(BLK)

CN21

LIQUID

(WHT)

TH23 TH22

CN20

INTAKE

(RED)

TH21

CN81

ADDRESS

(RED)

ADDRESS

CN82

CN42

ADDRESS

(RED)

ADDRESS

CN43

SW2SW3

123456789

1234

OFF

I.B

See fig :*1

SW5

SW1

220V 240V

A.B

W.B

OFF

SW12

10ths DIGIT

SW11

SW14

1s DIGIT

BRANDH No.

P.B

12345678910

112

146

CN90

WIRELESS

(WHT)

141 8

LED2

CNB

SW2SW1

LED1

t° t° t°

M 1~

LEV

M1M2

L N

1515

The black square (■) indicates a switch position.

WIRING DIAGRAM6

PKFY-P20VBM-E PKFY-P25VBM-E

OCH418C

1717

Mark Meaning

LED1

Main power supply

Main power supply (indoor unit:220-240V) power on lamp is lit

Function

LED on indoor board for service

OFF

1234

MODELS SW2

P20

OFF

1234

MODELS SW2

P25

<*1>

LED2

Power supply for MA-Remote controller

Power supply for MA-Remote controller on lamp is lit

Legend

Symbol

I.B

CN32 CN51 CN52 SW2

SW2

SW3

TH21

TH22

Remote switch Centrally control Remote indication

Capacity code Mode selection

Room temp.detection

(0/15k,25/5.4k)

Pipe temp.detection/Liquid

(0/15k,25/5.4k)

Name

Indoor controller board

P.B

W.B

Indoor power board

ZNR Varistor

FUSE

Fuse (T6.3AL 250V)

F.C

Fan phase control

MF Fan motor

Capacitor (Fan motor)

Vane motor

LEV

Linear expansion valve

Connector

Switch

Thermistor

Symbol

TB2 TB5

Power supply Transmission

Address board

Mode selection

Name

Symbol

Name

Terminal block

TH23

Pipe temp.detection/Gas

(0/15k,25/5.4k)

Note

1. At servicing for outdoor unit, always follow the wiring diagram of outdoor unit.

2. In case of using MA-remote controller, please connect MA-remote controller cable in an accessory to the connector . (Remote controller wire is non-polar.)

3. In case of using M-NET, please connect to TB5 (Transmission line is non-polar.)

4. Symbols used in wiring diagram above are, : terminal block, : connector

5. The setting of the SW2 dip switches differs in the capacity. For the detail, refer to the fig :*1.

6. Please set the switch SW5 according to the power supply voltage.

Set SW5 to 240V side when the power supply is 230 and 240 volts. When the power supply is 220 volts, set SW5 to 220V side.

A.B

SW1

SW5

RU BZ LED1 LED (Operation indicator: Green)

LED (Preparation for heating: Orange) Emergency operation (Heat) Emergency operation (Cool)

LED2

SW11 SW12 SW14

Voltage selection Address setting 1s digit Address setting 10ths digit Connection No.

Switch

Receving unit Buzzer

Wireless remote controller board

CN5V

VANE

(BLU)

CN52CN51

CN41

CN32

CN60

LEV

(WHT)

BRN

RED

BLU

ORN

YLW

WHT

CN3A MAREMOCON

(BLU)

FAN

(GRN)

CND

(RED)

CN2M

M-NET

(BLU)

TO OUTDOOR UNIT BC CONTROLLER M-NET REMOTE CONTROLLER DC24-30V

BREAKER (16A)

FUSE (16A)

PULL BOX

TB2

TO NEXT INDOOR UNIT

POWER SUPPLY ~/N 220-240V 50Hz ~/N 220V 60Hz

RED

WHT

BLK

BLU

GRN /YLW

BLU

TB5

TO MA-REMOTE CONTROLLER DC8.7-13V

ORN

ZNR

FUSE

250V

6.3A

LED1

CN35P

(BLU)

F.C

CN53P (RED)

CN53M

(RED)

CN35M

(BLU)

LED2

CN29

GAS

(BLK)

CN21

LIQUID

(WHT)

TH23 TH22

CN20

INTAKE

(RED)

TH21

CN81

ADDRESS

(RED)

ADDRESS

CN82

CN42

ADDRESS

(RED)

ADDRESS

CN43

SW2SW3

123456789

1234

OFF

I.B

See fig :*1

SW5

SW1

220V 240V

A.B

W.B

OFF

SW12

10ths DIGIT

SW11

SW14

1s DIGIT

BRANCH No.

P.B

12345678910

112

146

CN90

WIRELESS

(WHT)

141 8

LED2

CNB

SW2SW1

LED1

t° t° t°

M 1~

LEV

M1M2

L N

1515

ON OFF

1234

MODELS SW2

P15

RED WHT BLU ORN YLW

The black square (■) indicates a switch position.

PKFY-P15VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-ER1 PKFY-P15VBM-ER2 PKFY-P20VBM-ER2 PKFY-P25VBM-ER2

OCH418C

PKFY-P15VBM-ER3 PKFY-P20VBM-ER3 PKFY-P25VBM-ER3

Note

1. At servicing for outdoor unit, always follow the wiring diagram of outdoor unit.

2. In case of using MA-remote controller,please connect MA remote controller cable in an accessory to the connector . (Remote controller wire is non-polar.)

3. In case of using M-NET,please connect to TB5 (Transmission line is non-polar.)

4. Symbols used in wiring diagram above are, : terminal block, : connector

5. The setting of the SW2 dip switches differs in the capacity. For the detail, refer to the fig : *1.

6. Please set the switch SW5 according to the power supply voltage. Set SW5 to 240V side when the power supply is 230 and 240 volts. When the power supply is 220 volts, set SW5 to 220V side.

Legend

Symbol I.B

CN32 CN51 CN52 CN105 SW2

SW2

SW3

TH21

TH22

Remote switch Centrally control

Remote indication IT Terminal Capacity code

Mode selection

Room temp,detection

(0°C/15kΩ,25°C/5.4kΩ)

Pipe temp,detection/Liquid

(0°C/15kΩ,25°C/5.4kΩ)

Name

Indoor controller board

P.B

W.B

Indoor power board

FUSE

Fuse (T6.3AL 250V)

F.C

Fan phase control

MF Fan motor

Capacitor (Fan motor)

Vane motor

LEV

Linear expansion valve

Connector

Switch

Thermistor

Symbol

TB2 TB5

Power supply

Transmission

Address board

Mode selection

Name

Symbol

Name

Terminal block

TH23

Pipe temp,detection/Gas

(0°C/15kΩ,25°C/5.4kΩ)

Models

P15

1234

OFF

SW2 Models

P20

1234

OFF

SW2 Models

P25

SW2

1234

OFF

A.B

SW1

SW5

RU BZ LED1 LED (Operation indicator:Green)

LED (Preparation for heating:Orange) Emergency operation (Heat) Emergency operation (Cool)

LED2

SW11 SW12 SW14

Voltage selection

Address setting 1s digit Address setting 10ths digit

Branch No.

Switch

Receving unit Buzzer

Wireless remote controller board

Mark

LED1 LED2

Meaning

Main power supply

Power supply for MA-Remote controller

Function

Power supply for MA-Remote controller on →lamp is lit

Main power supply(Indoor unit : 220-240V) power on →lamp is lit

LED on indoor board for service

The black square (■) indicates a switch position. <*

RED WHT BLU ORN YLW

CN5V VANE (BLU)

CN52

(GRN)

CN51

(WHT)

CN41

(WHT)

CN32

(WHT)

5 9

CN60

LEV

(WHT)

BRN

RED

BLU

ORN

YLW

WHT

CN3A MAREMOCON

(BLU)

FAN

(GRN)

CND

(RED)

CN2M

M-NET

(BLU)

TO OUTDOOR UNIT BC CONTROLLER M-NET REMOTE CONTROLLER DC24 - 30V

BREAKER (16A)

FUSE (16A)

PULL BOX

TB2

TO NEXT INDOOR UNIT

POWER SUPPLY ~/N 220 - 240V 50Hz ~/N 220V 60Hz

RED

WHT

BLK

BLU

GRN /YLW

BLU

TB5

TO MA-REMOTE CONTROLLER DC8.7 - 13V

ORN

FUSE

250V

6.3A

LED1

TAB1

CN35P

(BLU)

F.C

CN53P (RED)

CN53M

(RED)

CN35M

(BLU)

LED2

CN29

GAS

(BLK)

CN21

LIQUID

(WHT)

TH23 TH22

CN20

INTAKE

(RED)

TH21

CN81

ADDRESS

(RED)

ADDRESS

CN82

CN42

ADDRESS

(RED)

ADDRESS

CN43

SW2SW3

J41

Pair No.

J42

123456789

1234

OFF

I.B

See fig :*1

SW5

SW1

220V 240V

A.B

W.B

OFF

P.B

12345678910

112

146

CN90

WIRELESS

(WHT)

141 8

LED2

CNB

SW1SW2

LED1

t° t° t°

LEV

M1M2

L N

CN105

(RED)

1515

SW14

BRANCH

No.

SW11

DIGIT

SW12

10ths DIGIT

OCH418C

1919

TROUBLESHOOTING

REFRIGERANT SYSTEM DIAGRAM

8-1. HOW TO CHECK THE PARTS

PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P25VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-ER1 PKFY-P15VBM-ER2 PKFY-P20VBM-ER2 PKFY-P25VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-ER3 PKFY-P25VBM-ER3

Strainer (#100mesh)

Heat exchanger

Room temperature thermistor TH21

Gas pipe temperature thermistor TH23

Liquid pipe temperature thermistor TH22

Gas pipe

Liquid pipe

Flare

Linear expansion

valve

Parts name Check points

Disconnect the connector then measure the resistance with a tester. (At the ambient temperature 10~30)

Disconnect the connector then measure the resistance valve with a tester. (Coil temperature 20)

Vane motor (MV)

Linear expansion valve (LEV)

Refer to the next page for the details.

Room temperature thermistor (TH21)

Liquid pipe temperature thermistor (TH22)

Gas

pipe temperature

thermistor (TH23)

Normal

4.3k~9.6k

Abnormal

Open or short

Normal

150 10%

Abnormal

(1)-(5)

White-Red

(2)-(6)

Yellow-Brown

(3)-(5)

Orange-Red

(4)-(6)

Blue-Brown

Open or short

Measure the resistance between the terminals with a tester. (At the ambient temperature 25)

Normal Normal

400 7%

Abnormal

-

Red-Pink or White

-

Red-Blue

-

Red-Orange

-

Red-Yellow

Open or short

Measure the resistance between the terminals with a tester. (At the ambient temperature 20)

Fan motor (MF)

Abnormal

Open or short

White-Black

Red-Black

Normal

286 200

Orange

Pink or White

Red

Ye l l ow

Blue

5 3

Connect pin No.

White

Red

Black

FAN

1 2 3 4 5 6

LEV

White

Yellow

Orange

Blue

Red

Brown

CN60

Unit: mm(inch)

Service ref.

Item

PKFY-P15, 20, 25VBM-E

PKFY-P20, 25VBM-ER1

PKFY-P15, 20, 25VBM-ER2

Gas pipe {12.7 (1/2”)

Liquid pipe

{6.35 (1/4”)

PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P25VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-ER1 PKFY-P15VBM-ER2 PKFY-P20VBM-ER2 PKFY-P25VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-ER3 PKFY-P25VBM-ER3

OCH418C

-20 -10 0 10 20 30 40 50

< Thermistor for lower temperature >

Temperature ()

Resistance (K)

Controller board

Drive circuit

Connector(CN60)

DC12V

Brown

Red

Blue

Orange

Yellow

White

Blue

Brown

Yellow

Orange

Red

White

Linear expansion valve

Room temperature thermistor (TH21) Liquid pipe temperature thermistor (TH22) Gas pipe temperature thermistor (TH23)

Thermistor R0=15k' ± 3% Fixed number of B=3480 ± 2%

Rt=15exp { 3480( ) }

0: 15k'

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

Thermistor for lower temperature

Linear expansion valve

1 Operation summary of the linear expansion valve

• Linear expansion valve opens/closes through stepping motor after receiving the pulse signal from the indoor controller board.

• Valve position can be changed in proportion to the number of pulse signal. <Connection between the indoor controller board and the linear expansion valve>

273+t

273

Note : Since the number of the connector at the controller board side and the relay connector are different, follow the color of

the lead wire.

OCH418C

Output

(Phase)

Output

OFF

ON ON

OFF

3 OFF OFF

ON ON

ON OFF OFF

Linear expansion valve operation

Troubleshooting

Open

Extra tightening (200~800 pulse)

Pulse number

Outdoor unit R410A model : 1400 pulse Outdoor unit R22/R407C model : 2000 pulse Opening a valve all the way

Valve position (capacity)

Closing a valve : 1 → 2 → 3 → 4 → 1 Opening a valve : 4 → 3 → 2 → 1 → 4 The output pulse shifts in above order.

• When linear expansion valve operation stops, all output phase become OFF.

• At phase interruption or when phase does not shift in order, motor does not rotate smoothly and motor will lock and vibrate.

• When the switch is turned on, 2200 pulse closing valve signal will be sent till it goes to point A in order to define the valve position.

When the valve moves smoothly, there is no noise or vibration

occurring from the linear expansion valves : however, when the pulse number moves from E to A or when the valve is locked, more noise can be heard than in a normal situation.

• Noise can be detected by placing the ear against the screw driver handle while putting the screw driver tip to the linear expansion valve.

6 5 4 3 2 1

LED1k

Symptom

Check points

Operation circuit failure of the micro processor

Disconnect the connector on the controller board, then connect LED for checking.

When power is turned on, pulse signals will output for 10 seconds. There must be some defects in the operation circuit if the LED does not 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 doesn't 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 indoor units in cooling mode, then check the pipe temperature <liquid

pipe temperature> of the indoor unit by the outdoor multi controller board operation monitor. During fan operation, linear expansion valve is closed completely and if there is any leaking, detecting temperature of the thermistor will go lower. If the detected temperature is much lower than the temperature indicated in the remote controller,

it means the valve is not closed all the way. It is not necessary to exchange the linear expansion valve, if the leakage is small and not affecting normal operation.

Thermistor (Liquid pipe)

Linear expansion valve

Motor will idle and make a ticking noise when the motor is operated while the linear expansion valve is locked. This ticking sound is the sign of the abnormality.

Check the color of lead wire and missing terminal of the connector.

Exchange the linear expan-

sion vale.

Exchange the linear expan-

sion valve.

If large amount of refriger-

ant is leaked, exchange the linear expansion valve.

Disconnect the connector

at the controller board, then check the continuity.

Measure the resistance between each coil (white-red, yellowbrown, orange-red, blue-brown) using a tester. It is normal if the resistance is in the range of 150" ±10%.

Short or breakage of the motor coil of the linear expansion valve

OCH418C

8-2. FUNCTION OF DIP SWITCH

1 2 3 4 5 6 7 8 9

1~4

1 2 3 4 5 6 7 8 9

Thermistor<Intake temperature> position

ON OFF

Filter clogging Provide Not provide Filter sign indication 2,500 hr 100 hr Air intake Not effective Not effective Remote indication switching Thermo ON signal indication Fan output indication Humidifier control

Fan operation at Heating mode

Thermo ON operation at heating mode

Extra low *1

Setting air flow *1 Depends on SW1-7 Auto restart function Effective Not effective Power ON/OFF Effective Not effective

Heat pump/Cool only Cooling only Heat pump Louver Vane

Vane swing

Available Not available

Vane horizontal angle Second setting First setting

Vane cooling limit angle setting

Horizontal angle Down B,C

Effective Not effective Heating 4 degree up Not effective Effective Superheat setting temperature

*2 —

—

Subcool setting temperature

*2 — —

OFF

12345678910

OFF

12345678910

OFF

1234

OFF

1234

P20

Models SW2

P25

Address board

Indoor controller board

SW3 Function selection

Under

suspension

SW2 Capacity

code

Before power supply ON

switch

SW1

Mode

Effective

timing

Under

suspension

selection

Switch

Pole

Function

Operation by switch

Remarks

Built-in remote controller

Indoor unit

Changing the opening of linear expansion valve

SW1-7

OFF

SW1-8

OFF OFF

ON ON

Fan speed Extra low Low Setting air flow Stop

*2 It is impossible to intake the fresh air.

Set for each capacity.

*1 *2

At cooling mode, each angle can be used only 1 hour. Please do not change SW3-9, 3-10 as trouble might be caused by the usage condition.

Air flow set in case of heat thermo OFF

NOTE:

OFF

1234

P15

Low *1

Second setting is the same as first setting.

PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P25VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-ER1 PKFY-P15VBM-ER2 PKFY-P20VBM-ER2 PKFY-P25VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-ER3 PKFY-P25VBM-ER3

The black square ( ) indicates a switch position.

OCH418C

J41, J42

Wireless

remote

controller

Pair No

Jumper

Pattern A

Setting pattern

J41 J42

Indoor controller jumper wire

Pair No. of wireless remote controller *

Initial setting

A B

—

Cut

—

— —

Cut

0 1

—

* Pair No.4-9 of wireless remote controller is setting pattern D.

ON/OFF

TEMP

FAN

VANE

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

min

RESET

SET

CLOCK

MODEL SELECT

Model No.

Temperature button

SET button

Pair No.

Minute button

• To operate each indoor unit by each remote controller when installed 2 indoor units or more are near, Pair No. setting is necessary.

Pair No. setting is available with the 4 patterns

(Setting

patterns

A to D).

Make setting for J41, J42 of indoor controller board and the Pair No. of

wireless remote controller.

•You may not set it when operating it by one remote controller. Setting for indoor unit Jumper wire J41, J42 on the indoor controller board are cut according to

the table below.

Wireless remote controller pair number:

Setting operation

1. Press the SET button (using a pointed implemet). Check that the

remote controller’s display has stopped before continuing. MODEL SELECT flashes, and the model No. (3 digits) appears (steadily-lit).

2. Press the MINUTE button twice. The pair number appears flashing.

3. Press the temperature buttons to select the pair number to set.

4. Press the SET button (using a pointed implemet). The set pair number

is displayed (steadily-lit) for 3 seconds, then disappears.

SW12

SW11

SW14

SW12

SW11

SW14

Address board

Operation by switch Switch Remarks

SW11

1s digit

address

setting

SW12

10ths digit

address

setting

SW14

Branch

No.

Setting

SW5

Voltage

selection

Rotary switch

How to set address Example : If address is "3", remain SW12 (for over 10) at "0", and match SW11 (for 1 to 9) with "3".

How to set branch number SW14 (Series R2 only). Match the indoor unit’s refrigerant pipe with the BC contoller’s end connection number Remain other than series R2 at "0".

If the unit is used at the 230V or 240V area, set the voltage to 240V. If the unit is used at the 220V, set the voltage to 220V.

Address board

220V

240V

220V

240V

Under

operation

suspension

Before

power

supply

Effective

timing

Rotary switch

The black square ( ) indicates a switch position.

OCH418C

8-3. TEST POINT DIAGRAM

8-3-1. Indoor controller board PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P25VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-ER1 PKFY-P15VBM-ER2 PKFY-P20VBM-ER2 PKFY-P25VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-ER3 PKFY-P25VBM-ER3

CN3A Connected to the MA-Remote controller Between 1 to 3 8.7-13V DC (Pin1 (+))

CN29 Pipe temperature thermistor/Gas (TH23)

CN21 Pipe temperature thermistor/Liquid (TH22)

CN90 Connected to the

wireless remote controller board (W.B)

CN60 Linear expansion valve output (LEV)

SW3 Mode selection

SW2 Capacity setting

CN5V Vane motor output (MV)

CN20 Room temperature thermistor (TH21)

CN53M Connected to the indoor power board (CN53P) Between 1 to 2 24-30V DC (non-polat) Between 3 to 5 12.5-13.7V DC (Pin3 (+)) Between 4 to 5 11.5-12.7V DC (Pin4 (+))

CN35M Connected to the indoor power board (CN35P)

LED2 Indication of power supply for MA-Remote controller

CN41 Connector (HA terminal-A)

CN32 Connector (Remote switch)

J41, J42 Wireless remote controller Pair No. setting

JP105 Model setting

CN81 Connected to the address board (CN82)

CN42 Connected to the address board (CN43)

CN51 Centrally control 1-2 : Control signal

12VDC pulse input (1 : +)

3-4 : Operation indicator

12VDC (3 : +)

3-5 : Malfunction indicator

12VDC (3 : +)

CN52 Remote indicator

1-2

: Status lamp 12VDC (1 : +)

Fan motor output (SW1-5 OFF) Thermostat ON (SW1-5 ON) 1-3: Cooling/Dry status lamp

12VDC (1 : +) 1-4: Heating status lamp

12VDC (1 : +)

The voltage range of DC12V above

is between DC11.5 V to DC 13.7 V.

OCH418C

Indoor controller board PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P25VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-ER1 PKFY-P15VBM-ER2 PKFY-P20VBM-ER2 PKFY-P25VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-ER3 PKFY-P25VBM-ER3

CN3A Connected to the MA-Remote controller Between 1 to 3 8.7-13V DC (Pin1 (+))

CN29 Pipe temperature thermistor/Gas (TH23)

CN21 Pipe temperature thermistor/Liquid (TH22)

CN90 Connected to the wireless remote controller board (W.B)

CN60 Linear expansion valve output (LEV)

SW3 Mode selection

SW2 Capacity setting

CN5V Vane motor output (MV)

CN20 Room temperature thermistor (TH21)

CN53M Connected to the indoor power board (CN53P) Between 1 to 2 24-30V DC (non-polat) Between 3 to 5 12.5-13.7V DC (Pin3 (+)) Between 4 to 5 11.5-12.7V DC (Pin4 (+))

CN35M Connected to the indoor power board (CN35P)

CN41 Connector (HA terminal-A)

CN32 Connector (Remote switch)

J41, J42 Wireless remote controller Pair No. setting

JP105 Model setting

CN81 Connected to the address board (CN82)

CN42 Connected to the address board (CN43)

CN51 Centrally control 1-2 : Control signal

12VDC pulse input (1 : +)

3-4 : Operation indicator

12VDC (3 : +)

3-5 : Malfunction indicator

12VDC (3 : +)

CN52 Remote indicator

1-2

: Status lamp 12VDC (1 : +)

Fan motor output (SW1-5 OFF) Thermostat ON (SW1-5 ON) 1-3: Cooling/Dry status lamp

12VDC (1 : +)

1-4: Heating status lamp

12VDC (1 : +)

The voltage range of DC12V above

is between DC11.5 V to DC 13.7 V.

CN105

LED2 Indication of power supply for MA-Remote controller

OCH418C

8-3-2. Indoor power board PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P25VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-ER1 PKFY-P15VBM-ER2 PKFY-P20VBM-ER2 PKFY-P25VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-ER3 PKFY-P25VBM-ER3

FUSE

6.3A 250V

CN53P Connected to the indoor controller board (CN53M) Between 1 to 2 24-30V DC (non-polat) Between 3 to 5 12.5-13.7V DC (Pin3 (+)) Between 4 to 5 11.5-12.7V DC (Pin4 (+))

LED1 Indication of main power

supply ON/OFF

CN35P Connected to the indoor controller board (CN35M)

CN2M Connected to the terminal block (TB5) (M-NET transmission connecting wire) 24-30V DC (non-polar)

FAN Fan motor output (MF)

CND Power supply for indoor controller board Between 1 to 3 220-240V AC

OCH418C

1234 5678 9



8-3-2. Indoor power board PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P25VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-ER1 PKFY-P15VBM-ER2 PKFY-P20VBM-ER2 PKFY-P25VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-ER3 PKFY-P25VBM-ER3

8-3-3. Address board PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P25VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-ER1 PKFY-P15VBM-ER2 PKFY-P20VBM-ER2 PKFY-P25VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-ER3 PKFY-P25VBM-ER3

SW1

Function setting

SW12

Address setting 10ths digit

SW11

Address setting 1s digit

FUSE

6.3A 250V

CN53P Connected to the indoor controller board (CN53M) Between 1 to 2 24-30V DC (non-polar) Between 3 to 5 12.5-13.7V DC (Pin3 (+)) Between 4 to 5 11.5-12.7V DC (Pin4 (+))

CN35P Connected to the indoor controller board

(CN35M)

CN2M Connected to the terminal block (TB5) (M-NET transmission connecting wire) 24-30V DC (non-polar)

FAN Fan motor output (MF)

CND Power supply for indoor controller board Between 1 to 3 220-240V AC

LED1 Indication of main power supply ON/OFF

OCH418C

DISASSEMBLY PROCEDURE

1. REMOVING THE LOWER SIDE OF THE INDOOR UNIT FROM THE INSTALLATION PLATE

When there is removing plate (1) Remove the corner box at right lower side of the indoor

unit and remove the removing plate from the corner box. (See Figure 3) (2) Insert the removing plate at the back side of the corner

box to remove the indoor unit. (3) Remove the hook by pulling the lower side of the indoor

unit down as shown in the Figure 1. When there is no removing plate or it cannot be used for

some reason. (1) Remove the front panel. (2) Insert the screw driver to the corner hole at both left and

right side as shown in the Figure 2.

(3) Push it up, then pull down the lower side of indoor unit and

remove the hook.

PKFY-P15VBM-E PKFY-P20VBM-E PKFY-P25VBM-E PKFY-P20VBM-ER1 PKFY-P25VBM-ER1

Be careful when removing heavy parts.

Figure 1 Figure 2

2. REMOVING THE FRONT PANEL

* Before removing the front panel, leave the open space at

upper side of the vane approximately 2 to 3 cm. (1) Remove the 3 screw caps then remove the 3 set screws. (Refer to Photo 1) (2) Remove the grille. (3) Remove the left side of the front panel, then right side. (4) After removing the lower side of the front panel a little,

remove it as pulling the upper side toward you.

* Please pay attention to the nozzle assembly. INSTALLING THE FRONT PANEL

(1) Insert the lower side of the front panel under the vane. (2) Set the upper side of the front panel. (See Figure 4) (3) Set the lower side of the front panel then fix it with the

screws. (4) Press the area indicated as arrow sign and set it to the air

conditioner unit.

(5) Attach the screw caps.

(4) Push

(3)

(2)

Photo 1

Figure 4

Front panel

Set screws

Figure 3

Vane

Grille

Indoor unit removing plate

Insert the edge

Pull



Push

Down

Be careful not to damage the airflow adjustment plate with the screw driver.

Corner box

Corner hole

PHOTOS & ILLUSTRATIONSOPERATION PROCEDURE

OCH418C

2929

3. REMOVING THE INDOOR CONTROLLER BOARD AND INDOOR POWER BOARD

(1) Remove the front panel. (Refer to procedure 2) (2) Remove the electrical box cover (screw 4 × 10). (See Photo 2)

INDOOR CONTROLLER BOARD (1) Disconnect the following connectors from the indoor

controller board. CN60, CN5V, CN90, CN29, CN21 CN42, CN81, CN3A, CN20 (2) Pull out the indoor controller board toward you, then

disconnect the rest of connectors. CN53M, CN35M (See Photo 3)

INDOOR POWER BOARD (1) Disconnect the following connectors on the indoor power

board. FAN, CN53P, CN35P, CN2M, CND (2) Remove the earth wire for TAB1. (3) Pull out the indoor power board toward you. (See Photo 3)

Photo 2

Electrical box cover

Electrical box

Photo 3

Indoor controller board

Indoor power board

Room temperature thermistor cover

4. REMOVING THE ELECTRICAL BOX

(1) Remove the front panel. (Refer to procedure 2) (2) Remove the electrical box cover. (See Photo 2)

(3) Pull the nozzle assembly toward you as opening the catch

of the nozzle assembly. (See Photo 5) (4) Disconnect the indoor/outdoor transmission wiring of TB5. (5) Disconnect the power supply wiring of TB2. (6) Disconnect the relay connector of MA-remote controller. (7) Disconnect the following connector on the indoor controller

board. CN60, CN5V, CN29, CN21, CN90, (CN3A) (8) Disconnect the connector (FAN) on the indoor power board. (9) Remove the ground wire fixing screw. (10) Pull the disconnected lead wire out from the electrical box. (11) Push up the upper fixture catch to remove the box, then

pull the lower fixture and remove it from the box fixture.

Photo 4

Ground wire set screw

Linear expansion valve

Terminal block (TB2)

Screw

Terminal block (TB5)

Water cut fixing screw

Water cut

Terminal block (TB2)

Terminal block (TB5)

Indoor power board

Indoor controller board

Liquid pipe temp. thermistor (TH22)

Gas pipe temp. thermistor (TH23)

MA-remote controller connector

PHOTOS & ILLUSTRATIONSOPERATION PROCEDURE

OPERATION PROCEDURE PHOTOS & ILLUSTRATIONS

OCH418C

5. REMOVING THE NOZZLE ASSEMBLY AND DRAIN HOSE

(1) Remove the front panel (Refer to procedure 2). (2) Remove the electrical box cover. (See Photo 2) (3) Disconnect the connector (CN5V) on the indoor controller

board.

(4) After unhook the right side of the corner box, press the

upper left side and remove the corner box. (5) Remove the nozzle assembly from the fixture. (See Photo 5) (6) Remove the drain hose.

Photo 5

Heat exchanger

Electrical box

Fixture

Drain hose

6. REMOVING THE LINE FLOW FAN AND THE FAN MOTOR

(1) Remove the front panel. (Refer to procedure 2) (2) Remove the nozzle assembly. (Refer to procedure 5) (3) Remove the electrical parts box. (Refer to procedure 4) (4) Remove the fixture while pressing the right side of motor

fixture catch. (See Photo 6) (5) Remove the left side of the motor fixture. (6) Loosen the screw which fixes the line flow fan to the fan

motor, then remove the fan motor by sliding it to the right

side. (See Photo 6) (7) Pull the left-hand side of the heat exchanger toward you.

(See Photo 7) (8) Remove the line flow fan.

Photo 6

Heat exchanger

Fan motor

Photo 7

Heat exchanger

7. REMOVING THE VANE MOTOR

(1) Remove the front panel. (Refer to procedure 2) (2) Remove the screw of the electrical parts box cover, and

remove the cover. (3) Remove the 2 screws of the vane motor. (See Photo 8) Disconnect the relay connector and remove the motor

from the shaft. (4) Disconnect the vane motor connector (CN5V) on the

indoor controller board.

Photo 8

Heat exchanger

Vane motor

Nozzle assembly

8. REMOVING THE LIQUID PIPE THERMISTOR AND GAS PIPE THERMISTOR

(1) Remove the front panel. (Refer to procedure 2) (2) Remove the electrical box cover. (See Photo 2) (3) Remove the water cut. (See Photo 3) (4) Cut the wiring fixed band. (5) Remove the liquid pipe thermistor and gas pipe thermistor.

(See Photo 9)

(6) Disconnect the connector (CN29) (CN21) on the indoor

controller board.

Photo 9

Heat exchanger

Drain hose

Fixture set screws

Set screws

Drain hose

Nozzle assembly

Fixture (left)

Nozzle assembly

Fixture

Line flow fan

Heat exchanger fixture (left)

Vane motor fixing screws

Gas pipe thermistor

Liquid pipe thermistor

Electrical box

Fixture (right)

PHOTOS & ILLUSTRATIONSOPERATION PROCEDURE

OCH418C

1. REMOVING THE LOWER SIDE OF THE INDOOR UNIT FROM THE INSTALLATION PLATE

When there is removing plate (1) Remove the corner box at right lower side of the indoor

unit and remove the removing plate from the corner box. (See Figure 3) (2) Insert the removing plate at the back side of the corner

box to remove the indoor unit. (3) Remove the hook by pulling the lower side of the indoor

unit down as shown in the Figure 1. When there is no removing plate or it cannot be used for

some reason. (1) Remove the front panel. (2) Insert the screw driver to the corner hole at both left and

right side as shown in the Figure 2.

(3) Push it up, then pull down the lower side of indoor unit and

remove the hook.

PKFY-P15VBM-ER2 PKFY-P20VBM-ER2 PKFY-P25VBM-ER2 PKFY-P15VBM-ER3 PKFY-P20VBM-ER3 PKFY-P25VBM-ER3

Be careful when removing heavy parts.

Figure 1 Figure 2

2. REMOVING THE FRONT PANEL

* Before removing the front panel, leave the open space at

upper side of the vane approximately 2 to 3 cm. (1) Remove the 3 screw caps then remove the 3 set screws. (See Photo 1) (2) Remove the grille. (3) Remove the left side of the front panel, then right side. (4) After removing the lower side of the front panel a little,

remove it as pulling the upper side toward you.

* Please pay attention to the nozzle assembly. INSTALLING THE FRONT PANEL

(1) Insert the lower side of the front panel under the vane. (2) Set the upper side of the front panel. (See Figure 4) (3) Set the lower side of the front panel then fix it with the

screws.

(4) Press the area indicated as arrow sign and set it to the air

conditioner unit.

(5) Attach the screw caps.

(4) Push

(3)

(2)

Photo 1

Figure 4

Front panel

Set screws

Figure 3

Vane

Grille

Indoor unit removing plate

Insert the edge

Pull



Push

Down

Be careful not to damage the airflow adjustment plate with the screw driver.

Corner box

Corner hole

PHOTOS & ILLUSTRATIONSOPERATION PROCEDURE

OCH418C

3. REMOVING THE INDOOR CONTROLLER BOARD AND INDOOR POWER BOARD

(1) Remove the front panel. (Refer to procedure 2) (2) Remove the electrical box cover (screw 4 × 10). (See Photo 2)

INDOOR CONTROLLER BOARD (1) Disconnect the following connectors from the indoor con-

troller board.

CN60, CN5V, CN90, CN29, CN21 CN42, CN81, CN3A, CN20

(2) Pull out the indoor controller board toward you, then dis-

connect the rest of connectors.

CN53M, CN35M (See Photo 3)

INDOOR POWER BOARD (1) Disconnect the following connectors on the indoor power

board.

FAN, CN53P, CN35P, CN2M, CND (2) Remove the earth wire for TAB1. (3) Pull out the indoor power board toward you. (See Photo 3)

Photo 2

Electrical box cover

Electrical box

Photo 3

Indoor controller board

Indoor power board

Room temperature thermistor (TH21)

Screw for electrical box cover

Electrical box

Water cut fixing screw

Water cut

4. REMOVING THE NOZZLE ASSEMBLY AND DRAIN HOSE

(1) Remove the front panel. (Refer to procedure 2) (2) Remove the electrical box cover. (See Photo 2) (3) Disconnect the connector (CN5V) on the indoor controller

board.

(4) After unhook the right side of the corner box, press the

upper left side and remove the corner box. (5) Remove the nozzle assembly from the fixture. (See Photo 4) (6) Remove the drain hose.

Photo 4

Heat exchanger

Electrical box

Fixture for nozzle assembly

Drain hose

Nozzle assembly

5. REMOVING THE FAN GUARD

(1) Remove the nozzle assembly and drain hose. (Refer to

procedure 4) (2) Remove the screws of fan guard. (See Photo 5) (3) Remove the fan guard.

Screws for fan guard

Photo 5

PHOTOS & ILLUSTRATIONSOPERATION PROCEDURE

OCH418C

7. REMOVING THE LINE FLOW FAN AND THE FAN MOTOR

(1) Remove the front panel. (Refer to procedure 2) (2) Remove the nozzle assembly. (Refer to procedure 4) (3) Remove the electrical parts box. (Refer to procedure 6) (4) Remove the fixture while pressing the right side of motor

fixture catch. (See Photo 7) (5) Remove the left side of the motor fixture. (6) Loosen the set screw which fixes the line flow fan to the

fan motor, then remove the fan motor by sliding it to the

right side. (See Photo 7) (7) Pull the left-hand side of the heat exchanger toward you.

(See Photo 9) (8) Remove the line flow fan.

Photo 7

Heat exchanger

Fan motor

Photo 9

Heat exchanger

Screws for fixture (left)

Set screw

Fixture (left)

Line flow fan

Heat exchanger fixture (left)

Fixture (right)

Photo 8

Set screw

6. REMOVING THE ELECTRICAL BOX

(1) Remove the front panel. (Refer to procedure 2) (2) Remove the electrical box cover. (See Photo 2) (3) Remove the water cut. (See Photo 3)

(4) Pull the nozzle assembly toward you as opening the catch

of the nozzle assembly. (See Photo 4)

(5) Disconnect the indoor/outdoor transmission wiring of TB5. (6) Disconnect the power supply wiring of TB2. (7) Disconnect the relay connector of MA-remote controller. (8) Disconnect the following connector on the indoor controller

board.

CN60, CN5V, CN29, CN21, CN90, (CN3A) (9) Disconnect the connector (FAN) on the indoor power board. (10) Remove the ground wire fixing screw. (11) Pull the disconnected lead wire out from the electrical box. (12) Push up the upper fixture catch to remove the box, then

pull the lower fixture and remove it from the box fixture.

Photo 6

Screw for

ground wire

Linear expansion valve

Terminal block (TB5)

Indoor power board

Indoor controller board

Liquid pipe temp. thermistor (TH22)

Gas pipe temp. thermistor (TH23)

Fixture for electrical box (top)

Fixture for electrical box (bottom)

Terminal block (TB2)

Electrical box

PHOTOS & ILLUSTRATIONSOPERATION PROCEDURE

OCH418C

8. REMOVING THE VANE MOTOR

(1) Remove the front panel. (Refer to procedure 2) (2) Remove the screw of the electrical parts box cover, and

remove the cover.

(3) Remove the 2 screws of the vane motor. (See Photo 10)

Disconnect the relay connector and remove the motor from the shaft.

(4) Disconnect the vane motor connector (CN5V) on the

indoor controller board.

Photo 10

Heat exchanger

Vane motor

Nozzle assembly

9. REMOVING THE LIQUID PIPE THERMISTOR AND GAS PIPE THERMISTOR

(See Photo 11)

(6) Disconnect the connector (CN29) (CN21) on the indoor

controller board.

Photo 11

Heat exchanger

Vane motor fixing screws

Gas pipe thermistor

Liquid pipe thermistor

Electrical box

PHOTOS & ILLUSTRATIONSOPERATION PROCEDURE

cCopyright 2007 MITSUBISHI ELECTRIC CORPORATION Distributed in Dec. 2012 No. OCH418 REVISED EDITION-C Distributed in Nov. 2011 No. OCH418 REVISED EDITION-B Distributed in Nov. 2008 No. OCH418 REVISED EDITION-A PDF 7 Distributed in May 2007 No. OCH418 PDF 9 Made in Japan

New publication, effective Dec. 2012 Specifications are subject to change without notice.

HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN

Mitsubishi PKFY-P20VBM-ER2, PKFY-P15VBM-ER3, PKFY-P20VBM-ER3, PKFY-P25VBM-E, PKFY-P20VBM-E Technical & Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual