Mitsubishi Electronics PMFY-P08NBMU-E1, PMFY-P12NBMU-E1, PMFY-P08NBMU-E, PMFY-P06NBMU-E1, PMFY-P06NBMU-E User Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

R410A / R22

Indoor unit
[Model names] [Service Ref.]

PMFY-P06NBMU-E PMFY-P06NBMU-E

PMFY-P06NBMU-E1

PMFY-P08NBMU-E PMFY-P08NBMU-E

PMFY-P08NBMU-E1

PMFY-P12NBMU-E PMFY-P12NBMU-E

PMFY-P12NBMU-E1

PMFY-P15NBMU-E PMFY-P15NBMU-E

PMFY-P15NBMU-E1

Revision:

• PMFY-P06/08/12/15NBMU-E1 are
added in REVISED EDITION-B.

• Some descriptions have been
modified.

• Please void OC341 REVISED
EDITION-A.

NOTE:

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

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

• For servicing RoHS compliant
products, refer to the RoHS
PARTS LIST.

July 2007

No. OC341

REVISED EDITION-B

INDOOR UNIT

CONTENTS

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

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

3. PART NAMES AND FUNCTIONS········3

4. SPECIFICATION···································5

5. OUTLINES AND DIMENSIONS············9

6. WIRING DIAGRAM ·····························10

7.

REFRIGERANT SYSTEM DIAGRAM

8. MICROPROCESSOR CONTROL·······13

9. TROUBLESHOOTING························20

10. DISASSEMBLY PROCEDURE···········27

11. PARTS LIST ········································30

12. RoHS PARTS LIST·····························33

···12

1

PMFY-P06NBMU-E ➔ PMFY-P06NBMU-E1

PMFY-P08NBMU-E ➔ PMFY-P08NBMU-E1
PMFY-P12NBMU-E ➔ PMFY-P12NBMU-E1
PMFY-P15NBMU-E ➔ PMFY-P15NBMU-E1

1. FAN MOTOR(MF) has been changed.

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

TECHNICAL CHANGES

2

FEATURES

Indoor Unit

Models Cooling capacity / Heating capacity

PMFY-P06NBMU-E 6,000 / 6,700 Btu/h
PMFY-P08NBMU-E 8,000 / 9,000 Btu/h
PMFY-P12NBMU-E 12,000 / 13,500 Btu/h
PMFY-P15NBMU-E 15,000 / 17,000 Btu/h

1. Fresh Air Intake

Air recycled indefinitely can become stale and stagnant with air quality suffering significantly. Fresh air is the
answer and it is for this reason that the PMFY- series takes in air directly from outdoors. This fresh air intake
allows you to enjoy the comfort of crisp, refreshing air in the confines of your living or working space.

2. Light and Compact

The main unit weighs only 31 lb. and the panel merely 7 lb. This makes the PMFY - series one of the lightest in the
industry. The unit size is also quite small, having been standardised to a strikingly compact 33-5/8 inch. All of
this make the chore of installation and maintenance that much simpler and easier.

2

3

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

MENU

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

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
lid

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

Built-in temperature sensor

PART NAMES AND FUNCTIONS

● Indoor Unit

Horizontal Air Outlet

Remove dust and pollutants
from return air.

Auto Air Swing Vane

Disperses airflow up and
down and adjusts the angle
of airflow direction.

Filters

Returns air from room.

Guide vane

Air flow can be changed to horizontal
by moving the guide vane to the left or right.

Air intake

● Wired remote controller

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

3

● Wired remote controller

●

●

˚F˚C

˚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

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 A V AILABLE” 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.

Display Section

For purposes of this explanation,
all parts of the display are shown
as lit. 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

Displayed 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

Shows the direction of the
outcoming airflow.

“One Hour Only” indicator

Room Temperature display

Shows the room temperature. The room
temperature display range is 46~102°F.
The display blinks if the temperature
is less than

46°F or 102°F

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.

Displayed 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,
when the airflow direction also
changes.

4

4

SPECIFICATION

4-1. SPECIFICATIONS

Item

Power

Cooling capacity
Heating capacity

Cooling

Input

Heating
Cooling

Current

Electric characteristic

(munsell symbol)

Dimensions

Heating

Exterior

Height

Width
Depth

Heat exchanger

Fan ✕ No

Air flow W3

External

static pressure

F a n

Fan motor

output

Insulator

Air filter

Pipe

dimensions

Gas
side

Liquid

side

Field drain pipe size
Noise level W3
Product weight

V·Hz
Btu/h
Btu/h

kW
kW

A

A
—
in.
in.
in.
—
—

CFM

in W.G.

kW

—
—

[in.
[in.
[in.

dB

lb.

PMFY-P06NBMU-E

PMFY-P06NBMU-E

PMFY-P08NBMU-E

PMFY-P08NBMU-E

1

PMFY-P12NBMU-E

PMFY-P12NBMU-E

1

PMFY-P15NBMU-E

PMFY-P15NBMU-E

1

Single phase 208-230V 60Hz
6,000
6,700

0.042

0.042

0.20

0.20

8,000
9,000

0.042

0.042

0.20

0.20

12,000
13,500

0.044

0.044

0.21

0.21

15,000
17,000

0.054

0.054

0.26

0.26

Unit : Galvanized sheets · Standard grilles : ABS resin acrylic coating Munsell<6.4Y 8.9/0.4>

9-1/16<1-3/16>

31-15/16<39-3/8>

15-9/16<18-1/2>

Cross fin

Line flow fan ✕ 1

230-250-280-300

250-280-300-320

270-300-340-370

0

0.028

Polyethylene sheet

PP honey comb fabric

1/2"
1/4"

1" O.D. (PVC pipe VP-20 connectable)

27-30-33-35

32-34-36-37

33-35-37-39

31<7>

1

Note 1. Rating conditions

Cooling: Indoor: D.B. 80°F W.B. 67°F

outdoor: D.B. 95°F W.B. 75°F

Heating: Indoor: D.B. 70°F

outdoor: D.B. 47°F W.B. 43°F

Note 2. The number indicated in < > is for the grille.

W 3. Air flow and the noise level are indicated as Low - Medium2 - Medium1 - High.

5

4-2. ELECTRICAL PARTS SPECIFICATIONS

Parts name

Service Ref.

Symbol

TH21

TH22

TH23

FUSE

MF

MV

DP

DS

LEV

TB2

TB5

TB15

Resistance 30˚F/15.8k", 50˚F/9.6k", 70˚F/6.0k", 80˚F/4.8k", 90˚F/3.9k", 100˚F/3.2k"

Resistance 30˚F/15.8k", 50˚F/9.6k", 70˚F/6.0k", 80˚F/4.8k", 90˚F/3.9k", 100˚F/3.2k"

Resistance 30˚F/15.8k", 50˚F/9.6k", 70˚F/6.0k", 80˚F/4.8k", 90˚F/3.9k", 100˚F/3.2k"

250V 6A

Thermistor resistance 30_F/6.3k", 50_F/3.9k", 70_F/2.5k", 80_F/2.0k", 90_F/1.6k", 100_F/1.3k"

(L1, L2, GR) Rated to 330V 30A

(M1, M2, S) Rated to 250V 20A

(1,2) Rated to 250V 10A

Liquid pipe thermistor

Gas pipe thermistor

Drain pump

Drain sensor

Linear expansion valve

PMFY-P06NBMU-E

PMFY-P06NBMU-E1

PMFY-P08NBMU-E

PMFY-P08NBMU-E

1

PMFY-P12NBMU-E

PMFY-P12NBMU-E

1

PMFY-P15NBMU-E

PMFY-P15NBMU-E

1

Room temperature
thermistor

Fuse
(Indoor controller board)

Fan motor

Vane motor

Power supply
terminal block

Transmission
terminal block

DC Brushless Motor

8-pole OUTPUT 28W

PN0H28-MB

MSFJC 20M23

12V/380

"

PJV-1063

208-240V 50/60Hz

DC12V Stepping motor drive

port dimension [

3.2

(0~2000pulse)

EDM-40YGME

MA-remote controller
terminal block

w

Note : Refer to WIRING DIAGRAM for the supplied voltage.

w

w

w

6

4-3. AIR CAPACITY TAKEN FROM OUTSIDE

PMFY-P06NBMU-E
PMFY-P06NBMU-E

1

PMFY-P08NBMU-E
PMFY-P08NBMU-E

1

PMFY-P12NBMU-E
PMFY-P12NBMU-E

1

PMFY-P15NBMU-E
PMFY-P15NBMU-E

1

300 CFM
320 CFM
320 CFM
370 CFM

60 CFM
64 CFM
64 CFM
74 CFM

Air flow (Hi) Air capacity taken from outsideService Ref.

(Knockout)

4-{1/8

Fresh air intake hole

(Knockout)

Fresh air intake hole

90-

{4-

13/16

{

3-15/16

4-1/4

9-13/16 11-3/8

(Unit:inch)

~

CN51

Multiple remote
controller adapter
PAC-SA88HA-E

Indoor controller board

Distance between indoor
controller board and relay
must be within 33 feet.

Be sure to secure insulation
material by tape, etc.

5

Green

Yellow

Orange

Connector (5P)

Indoor unit side

Multiple remote
controller adapter
PAC-SA88HA-E

Be sure to secure insulation
material by tape, etc.

CN51
on
indoor unit
board

Red

Brown

MB

1

Installation at site

Q

0

B

A

C

1

2

3

Curve in the
right graphs

Duct characteristics
at site

Q

A

EC

Q

Qa

AD

PMFY-P·NBMU-E series are capable of taking air from outside. When taking air from outside, the duct fan is used.
The air capacity should be 20% or less of the airflow SPEC(Hi).

Operation in conjunction with duct fan (Booster fan)

●Whenever the indoor unit is operating, the duct fan
operates.
(1)Connect the optional multiple remote controller

adaptor (PAC-SA88HA-E) to the connector CN51
on the indoor controller board.

(2)Drive the relay after connecting the 12V DC relay

between the Yellow and Orange connector lines.

(w)Use a relay of 1W or smaller.
MB: Electromagnetic switch power relay for duct fan.

X: Auxiliary relay (12V DC LY-1F)

How to read curves

Q…Designed amount of fresh air
A…Static pressure loss of fresh air

B…Forced static pressure at air condi-

C…Static pressure of booster fan with
D…Static pressure loss increase

E…Static pressure of indoor unit with
Qa…Estimated amount of fresh air

intake <CFM>
intake duct system with air flow

amount Q <in. W.G>
tioner inlet with air flow amount Q

air flow amount Q <in. W.G>
amount of fresh air intake duct

system for air flow amount Q

air flow amount Q <in. W.G>

intake without D <CFM>

<in. W.G>

<in. W.G>

-0.1

-0.2

Static pressure (in.W.G.)

-0.3

-0.4

7

Characteristic diagram of air capacity taken from outside of PMFY-P·NBMU-E

0.2

0.1

00

010

20

30 40 50 60 70 80

Air flow (CFM)

2 intake

1 intake

4-4. NOISE CRITERION CURVES

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING
FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PMFY-P06NBMU-E
PMFY-P06NBMU-E

1

High

NOTCH

Medium1
Medium2

Low

35

SPL(dB)

33
30
27

LINE

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PMFY-P08NBMU-E
PMFY-P12NBMU-E
PMFY-P08NBMU-E

1

PMFY-P12NBMU-E1

High

NOTCH

Medium1
Medium2

Low

37

SPL(dB)

36
34
32

LINE

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

PMFY-P15NBMU-E
PMFY-P15NBMU-E

1

High

NOTCH

Medium1
Medium2

Low

39

SPL(dB)

37
35
33

LINE

UNIT

5ft

MICROPHONE

CEILING

8

5

Details of fresh air intake hole

Knockout

4-{1/8(2.8) Burring hole

Fresh air intake hole

4-5/16 (110)

9-1/16(230)

9-1/2

(235) or more

4-5/16

(110)

Suspension bolt(M10 or W 3/8)

Panel(grille):PMP-16BMU

Installation space required around indoor unit

Mounting plate

6-15/16(176)

Panel(grille):PMP-16BMU

Lower view

2-3/8(60) 1-9/16(40)

7-7/8(200)

23-5/8(600)

7-7/8(200)

Top

Air outlet(lower)

1-13/18(46)

1-11/16(43)

13/16(20) 13/16(20)

2-1/16(53)

2-11/16(69)

9-3/8(247)

1-3/16(30)

Right side

Outer line of grille

Center line of unit

29-7/8(759)

1-1/32(26)

31-15/18(811) suspension bolt pitch2-15/18(74.5)

37-13-16(960) ceiling opening13/16(20)

1-1/32(26)

2-15/18(74.5)

13/16(20)

39-3/8(1000) outer side of grille

11/16(17.5) 11/16(17.5)

1-25/32(45)

13-3/8(340) Suspension bolt pitch

1-25/32(45)

16-15/16(430)

Ceiling opening

18-1/2(470)

Outer side of grille

13/16(20)

13/16(20)

Terminal block for power supply

Terminal block for transmission

31-15/16(812)

3-3/8(96)

Left side

Front

drain pan

Electrical box

Drainage pipe

PVC pipe:

VP-20[O.D.{1"(26)]

Refrigerant pipe(gas)

O.D.{1/2"(12.7)

Refrigerant

pipe(liquid)

O.D.{1/4"(6.35)

Ceiling panel

Drain pan

Ceiling

panel

O.D.{1/2"({12.7)

PVC pipe:VP-20[I.D.{31/32"({25)]

O.D.{1/4"({6.35)

O.D.{1-11/16({43)

Drainage piping

Gas pipe

Liquid pipe

Pipe cover

Refrigerant

piping

39-3/8(1000) outer side of grille

18-1/2(470) Outer side of grille

{1-31/32(50)

2-3/16(56)

9-1/16(230)

3-3/8(96)

13/16(20)

13/32(10)

11-7/8(302)

10(254)

7-13/16(198)

5-9/16(141)

29-7/8(759)

15-9/16(395)

90-

{4-

13/6(122)

{3-15/16(

100)

4-1/4

(108)

9-13/16(250) 11-3/8(288.5)

Same line

Terminal block for

remote controller

OUTLINES AND DIMENSIONS

PMFY-P06NBMU-E PMFY-P06NBMU-E1
PMFY-P08NBMU-E PMFY-P08NBMU-E1
PMFY-P12NBMU-E PMFY-P12NBMU-E1
PMFY-P15NBMU-E PMFY-P15NBMU-E1

Unit : in. (mm)

9

6

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 to TB15. (Remote controller wire is non-polar.)

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

4.Symbol [S] of TB5 is the shield wire connection.

5.Symbols used in wiring diagram above are, : terminal block, :connecter.

6.The setting of the SW2, SW3 dip switches differs in the capacity for the detail, refer to the fig : w1.

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

CN51

CN52

SW2

SW3

SW4

A.B Address board

SW1

SW5

SW11

SW12

Mode selection

Voltage selection

Address setting 1st digit

Address setting 2nd digit

SW14 Connection No.

Centrally control

Remote Indication

Switch

Switch

Capacity code

Mode selection

Model selection

ZNR Varistor

X1 Aux.relay

Drain pump

FUSE Fuse (6A / 250V)

LED1 Power supply (I.B)

LED2 Power supply (I.B)

T Transformer

TH21

MF

MV

Thermistor Room temp. detection

(32

°

F

/15k", 77

°

F

/5.4k")

Pipe temp. detection / Liquid

(32

°

F

/15k", 77

°

F

/5.4k")

Pipe temp. detection / Gas

(32

°

F

1/15k", 77

°

F

/5.4k")

LEV Linear expansion valve

TH22

TH23

Fan motor (with inner thermo)

Vane motor

TB15 MA-Remote Controller

[Legend]

Symbol Name

I.B Indoor controller board

CN25

CN27

CN32

Connector Humidifier

Damper

Remote switch

Symbol Name

Symbol Name

DS

DP

Drain sensor

Drain water lifting-up mech.

TB2

TB5 Transmission

Terminal

block

Power supply

Models

P06

P08

P12

P15

SW2

123456

ON

OFF

123456

ON

OFF

123456

ON

OFF

123456

ON

OFF

SW3

1234567

ON

OFF

1234567

ON

OFF

123456

ON

OFF

123456

7

7

8

8

8

8

9

9

9

9

10

10

10

10

ON

OFF

<fig : w1>

Mark Meaning Function

Power supply for

MA-Remote controller

Main power supply (Indoor unit:208-230V)

Power on ➝ Lamp is lit.

LED on indoor board for service

LED1

Main power supply

Power supply for MA-Remote controller

on ➝ Lamp is lit.

LED2

1234556

MF

FAN

(

WHT

)

LED2

LED1

2

1

(BLU)

(M-NET)

CN2M

BLU

BLU

TB5

M1

M2

TB2

PULL BOX

FUSE(15A)

BREAKER

(15A)

L1

L2

S

(

SHIELD)

TO OUTDOOR UNIT

BC CONTROLLER

REMOTE CONTROLLER

DC24-30V

231

CN3A

(BLU)

ORN

ORN

TB15

1

2

TO MA-REMOTE

CONTROLLER

DC8.7-13V

POWER SUPPLY

~ / N 208—230V 60Hz

TO NEXT INDOOR UNIT

3 2 1

(BLK)

GAS

CN29

2 1

(WHT)

LIQUID

CN21

2 1

DS TH23 TH22

(RED)

INTAKE

CN20

(WHT)

LEV

CN60

(GRN)

REMOTE

INDICATION

CN52

2 1

6 5 4 3 2 1

15

(GRN)

VANE

CN6V

6 5 4 3 2 1 2 1

1 2 3 4 5

TH21

(WHT)

DRAIN

CN31

6

LEV

MV

CN25

2 1

CN27

87654

3

4

332

1

1

2

1

12345678910

SW3

123456

SW2

12345

SW4

ON

OFF

ON

OFF

ON

OFF

(RED)

ADDRESS

CN81

(RED)

ADDRESS

CN42

(WHT)

REMOTE

SWITCH

CN32

3212 13

DP

X1

X1

(WHT)

CNP

CND

(RED)

FUSE

250V

6A

T

BRN

RED

ORN

YLW

GRN

BLU

BRN

ORN

YLW

RED

WHT

(WHT)

CENTRALLY

CONTROL

CN51

15

RED

BLU

GRN / YLW

See fig : w1

8 7 6 5 4 3 2 1

4321

8

4

0

SW14SWC

2

1

CONNECTION

No.

0

SW11

1ST

DIGIT

0

SW12

2ND

DIGIT

3RD

DIGIT

12345678910

SW1

SW5

230V208V

(RED)

ADDRESS

CN82

(RED)

ADDRESS

CN43

A.B

I.B

G

<w2>

(w2)Use copper supply wire.

WIRING DIAGRAM

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E

10

PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1

Power supply for MA-Remote controller

on Lamp is lit.

Main power supply (Indoor unit:208-230V)

Power on Lamp is lit.

Power supply for

MA-Remote controller

Main power supply

Mark Meaning Function

LED1

LED on indoor board for service

Thermistor Room temp. detection

Symbol Name

TH21

Drain pump

X1 Aux.relay

Symbol Name

LED2

Ω)

Ω)

Ω)

77°F/5.4k

77°F/5.4k

77°F/5.4k

Ω,

Ω,

Ω,

Pipe temp. detection / Liquid

(32°F/15k

Pipe temp. detection / Gas

(32°F/15k

(32°F/15k

TH22

LED1 Power supply(I.B)

LED2 Power supply(I.B)

T Transformer

Mode selection

Switch

SW1

TH23

A.B Address board

Drain sensor

Drain water lifting-up mech.

Fan motor

Vane motor

DS

DP

MF

MV

Voltage selection

Address setting 1st digit

Address setting 2nd digit

SW5

SW11

SW12

SW14 Connection No.

Power supply

Terminal

block

TB2

TB5 Transmission

LEV Linear expansion valve

TB15 MA-Remote Controller

<fig:w1>

SW3

ON

OFF

SW2

ON

OFF

P06

Models

10
9

8

1234567

ON

OFF

123456

ON

OFF

P08

10
9

8

1234567

ON

OFF

123456

ON

OFF

P12

10

10

9

9

8

8

7

7

123456

123456

ON

OFF

123456

123456

ON

OFF

P15

<w2>Use Copper Supply Wire.

MV

15

MM

LEV

TH21

DS TH23 TH22

No.

9

8

A

7

B

6

C

5

D

4

E

3

F

2

1

0

SW14SWC

CN82

(RED)ADDRESS

81

8

A.B

CN43

(RED)

41

ADDRESS

CONNECTION

1ST

1

5

6

4

7

3

2

9

2

1

0

DIGIT

DIGIT

2ND

3RD

5

6

4

7

3

8

8

2

9

1

0

SW11

SW12

12345678910

SW1

230V208V

SW5

DIGIT

OFF

ON

4

8

CN81

(RED)

ADDRESS

OFF
ON

21

CN27

2121212131

CN25

GRN
YLW
ORN
RED
BRN

15

CN6V

(GRN)VANE

6161

(GRN)

REMOTE

15

WHT
YLW
ORN
BLU
RED

(WHT)LEV

BRN

°

t

°

t

°

t

°

t

I.B

ORN

CN60

(RED)

(WHT)

(BLK)

(WHT)

CN3A

1

CN20

INTAKE

CN21

LIQUID

GAS

CN29

CN31

DRAIN

(BLU)

3

ORN

(WHT)

CENTRALLY

LED2

123456

SW2

CN52

INDICATION

CN51

CONTROL

(BLU)

CN2M

(M-NET)

2

1

BLU

BLU

411

(RED)

1

CN42

ADDRESS

12345678910

SW3

T

FAN

(WHT)

3

1

(WHT)

REMOTE

SW4

X1

U

FUSE

6

3

CN32

SWITCH

12345

ON

OFF

CNP

(WHT)

31

31

CND

(RED)

LED1

See fig : w1

M

1~

DP

Connector Humidifier

CN25

Symbol Name

I.B Indoor controller board

[Legend]

Damper

Remote switch

Centrally control

CN27

CN32

CN51

Remote Indication

Capacity code

Mode selection

Model selection

Switch

CN52

SW2

SW3

SW4

ZNR Varistor

FUSE Fuse (6A / 250V)

Note

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

RED

BLU

TB2

<w2>

GRN / YLW

L1

L2

PULL BOX

GR

1

2

TB15

TO MA-REMOTE

CONTROLLER

DC8.7-13V

2.In case of using MA-Remote controller, please connect to TB15. (Remote controller wire is non-polar.)

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

4.Symbol [S]of TB5 is the shield wire connection.

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

6.The setting of the SW2, SW3 dip switches differs in the capacity for the detail, refer to the fig :w1.

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

S

M1

M2

TB5

(SHIELD)

TO OUTDOOR UNIT

BC CONTROLLER

REMOTE CONTROLLER

DC24-30V

3~

MS

MF

POWER SUPPLY

(15A)

~ / N 208-230V 60Hz

BREAKER

FUSE

(15A)

11

TO NEXT INDOOR UNIT

REFRIGERANT SYSTEM DIAGRAM7

Strainer (#100mesh)

Strainer pipe (#100mesh)

Strainer
(#100mesh)

Strainer
(#50mesh)

Heat exchanger

Thermistor TH21
<Room temperature detection>

Thermistor TH23
<Gas pipe temperature
detection>

Thermistor TH22
<Liquid pipe temperature
detection>

Linear expansion valve

w1 w2

Gas pipe

Liquid pipe

Flare connection

Gas pipe

Liquid pipe

[1/2"(12.7)
[1/4"(6.35)

Item

Service Ref.

Capillary tube w1
Capillary tube w2

O.D.[4.6 o I.D.[3.4 o R200 O.D.[3.6 o I.D.[2.4 o R200

O.D.[3.6 o I.D.[2.4 o R80

PMFY-P06/ P08/ P12/ P15NBMU-E

PMFY-P06/ P08/ P12/ P15NBMU-E

1

PMFY-P06/ P08NBMU-E

PMFY-P06/ P08NBMU-E1

PMFY-P12/ P15NBMU-E

PMFY-P12/ P15NBMU-E1

Unit:in.(mm)

Unit:mm

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E
PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1

12

8 MICROPROCESSOR CONTROL

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

MENU

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

˚F˚C

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON
OFFHrAFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

Control modes

Control details

1-1. Functions regulated by temperature

• Room temperature ] desired temperature + 2°F ···Thermo ON

• Room temperature [ desired temperature ···Thermo OFF

1-2. Anti-freezing control
Detected condition : When the liquid pipe temp. (TH22) is 32°F or less in 16

minutes from compressors start up, anti-freezing control
starts and the thermo

stat

OFF.

Released condition : The timer which prevents reactivating is set for 3 minutes,
and anti-freezing control is cancelled when any one of the
following conditions is satisfied.

1 Liquid pipe temp. (TH22) turns to be 50°F or above.
2 The condition of the thermostat OFF becomes

complete by thermoregulating, etc.

3 The operation mode becomes a mode other than COOL.
4 The operation stops.

1-3. Compressor time delay

• 3 minutes minimum off cycle.

By the remote controller setting (switch of 4 speeds)

2. Fan

1. Functions regulated
by temperature

Remarks

Type

Fan speed notch

[Low], [Medium2], [Medium1], [High]

4 speeds

To be continued to the next page

INDOOR UNIT CONTROL
8-1. COOL OPERATION

<How to operate>

1 Press POWER ON/OFF button.
2 Press the operation MODE button to display COOL.
3 Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 2°F when the or button is

pressed once. Cooling 67 to 87°F.

13

→

3

2

1

→

Control modes

Control details

3-1. Drain pump control

• Always drain pump ON during the COOL and DRY mode operation.
(Regardless of the thermostat ON/ OFF)

• When the operation mode is changed from COOL or DRY to any other mode
(including Stop), the drain pump continues to run for 3 minutes.

Drain sensor function

• The indoor circuit board energizes the drain sensor at a fixed voltage for a fixed
duration. After energizing, the circuit board then compares the drain sensor’s
temperature to the one before energizing, and judges whether the sensor is in
the air or in the water.

Basic control system

• While drain pump is turned on, it will repeat the following control system and judge
whether the sensor is in the air or in the water.

•Drain sensor temperature rise (∆t)

•Temperature of drain sensor before current is applied (T0)

•Temperature of drain sensor after current is applied (T

1)

[ ∆t = T1 – T0 ]

(1)Initial setting : Start at COOL mode and horizontal vane.
(2)Vane position : Horizontal →Downward A →Downward B →Downward C→Swing

(3)Restriction of the downward vane setting

When setting the downward vane A, B or C in [Medium1], [Medium2] or [Low] of
the fan speed notch, the vane changes to horizontal position after 1 hour has
passed.

4. Vane
(up/ down vane change)

3. Drain pump

Remarks

✻1
Drain sensor
Indoor controller
board
CN31

✻1
"Only 1 Hr"
appears on the
wired remote
controller.

Timing of
energizing
drain sensor

From the preceding page

ON

OFF

Stand by for
a minute

30
sec.

30
sec.

Detect the
temperature
before
energizing.
(T0)

Detect the
temperature
after
energizing.
(T1)

Judge whether
the sensor is in
the air or in the
water.

Stand by for
a minute

·······Repeat

14

8-2. DRY OPERATION

TIME SUN MON TUE WED THU FRI SAT
TIMER
AFTER

ERROR CODE

˚F˚C

ONLY1Hr.

TEMP.

MENU

ON/OFF

MONITOR/SET

BACK DAY

PAR-21MAA

CLOCK

Control modes

1. Functions regulated
by temperature

<How to operate>

ON
OFFHrAFTER

FUNCTION

˚F˚C

FILTER

WEEKLY

SIMPLE

AUTO OFF

ON/OFF

1 Press POWER ON/OFF button.
2 Press the operation MODE button to display DRY.
3 Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 2°F when the or button is

pressed once. Dry 67 to 87°F.

FILTER

CHECK

TEST

OPERATION

CLEAR

Control details

1-1. Dry mode temperature is controlled by TH21.

Dry mode ON Room temperature ] desired temperature + 2°F
Dry mode OFF Room temperature [ desired temperature

Room
temperature

Over 64°F

Less than 64°F

3 min. passed since starting operation

Call

Room temperature (Ta)

Ta ] 83°F

ON

83°F > Ta ] 79°F

79°F > Ta ] 75°F

75°F > Ta

OFF

Unconditional

Dry mode OFF

Dry mode

ON

time (min)

Dry mode

OFF

time (min)

93
7

5

3
3

33
3

10

Remarks

2. Fan

3. Drain pump

4. Vane
(up/ down vane change)

1-2. Frozen prevention control

No control function

Indoor fan operation control depends on the compressor conditions.

Dry mode

ON

OFF

Fan speed notch

[Low]

Stop

Note: Remote controller setting is not acceptable.

Same control as COOL operation

Same control as COOL operation

15

Control modes

Control details

Set by remote controller.

2. Drain pump

Remarks

1. Fan

Type

Fan speed notch

4 speeds type [Low], [Medium2], [Medium1], [High]

3. Vane
(up/ down vane change)

2-1. Drain pump control

The drain pump turns ON for the specified amount of time when any of the
following conditions is satisfied:
1 ON for 3 minutes after the operation mode is switched from COOL or DRY to

another operation mode (FAN).

2 ON for 6 minutes after the drain sensor is determined to be submerged

using the liquid level detection method given below.

3 ON for 6 minutes after indoor piping (liquid piping) temperature – indoor

room temperature [ -18°F, AND the drain sensor input is at the short or

open level.
(If condition 2 or 3 is still being met after the drain pump has been turned ON
for 6 minutes, the drain pump is kept ON for a further 6 minutes.)

2-2. Liquid level detection method

The liquid level is detected by determining whether or not the drain sensor is
submerged, based on the amount the temperature rises after self-heating the
sensor. This process is performed if any of the following conditions is satisfied:

1 Drain pump is ON.
2 Indoor piping (liquid piping) temperature – indoor room temperature [ -18°F
3 Indoor piping (liquid piping) temperature or indoor room temperature is at

the short or open level temperature.
4 Every 1 hour after the drain pump has been switched from ON to OFF.

Same as the control performed during the COOL operation, but with no restriction
on the vane's downward blow setting.

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

MENU

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

˚F˚C

˚F˚C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

ON
OFFHrAFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

8-3. FAN OPERATION

<How to operate>

1 Press POWER ON/OFF button.
2 Press the operation MODE button to display FAN.

16

8-4. HEAT OPERATION

TIME SUN MON TUE WED THU FRI SAT

˚F˚C

TEMP.

MENU

MONITOR/SET

BACK DAY

PAR-21MAA

CLOCK

TIMER
AFTER

ONLY1Hr.

ON/OFF

ERROR CODE

˚F˚C

OPERATION

ON
OFFHrAFTER

ON/OFF

FUNCTION

FILTER

WEEKLY

SIMPLE

AUTO OFF

FILTER

CHECK

CLEAR

TEST

<How to operate>

1 Press POWER ON/OFF button.
2 Press the operation MODE button to display HEAT.
3 Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 2°F when the or button is

pressed once. Heating 63 to 83°F.

<Display in HEAT operation>
[DEFROST]

The [DEFROST] symbol is only displayed during the defrost operation.

[STANDBY]

The [STANDBY] symbol is only displayed during hot adjust mode.

Control modes

1. Functions
regulated by
temperature

2. Fan

Control details

1-1. Minimum compressor off cycle is 3 minutes.

• Room temperature [ desired temperature -2°F ···Thermo ON

• Room temperature ] desired temperature ···Thermo OFF

Controlled by the remote controller (4-speed)
Priority is given to below-mentioned control mode

2-1. Stand by (hot adjust) mode
2-2. Preheating exclusion mode
2-3. Thermo OFF mode (When the compressor off by the thermoregulating)
2-4. Cool air prevention mode (Defrosting mode)

2-1. Stand by (hot adjust) mode

The fan controller becomes the stand by (hot adjust) mode for the following

conditions.

1 When starting the HEAT operation
2 When the thermoregulating function changes from OFF to ON.
3 When releasing the HEAT defrosting operation

Hot adjust mode ✻1

Set fan speed by the remote controller

[Low]

[Extra Low]

Remarks

✻1
"STAND BY"
will be displayed
during the stand
by (hot adjust)
mode.

A

CB

A: Stand by (hot adjust) mode start
B: 5 minutes have passed since the condition A or the indoor liquid pipe

temperature turned 95°F or more

C: 2 minutes have passed since the condition A

(Terminating the stand by (hot adjust) mode)

2-2. Preheating exclusion mode

When the condition changes the auxiliary heater ON to OFF
(thermoregulating or operation stop, etc), the indoor fan operates in [Low] mode for
1 minute.

To be continued to the next page

17

✻1
This control is
same for the
model without
auxiliary heater.

→

Control modes

Control details

2. Fan

Remarks

2-3. Thermo OFF mode

When the thermoregulating function changes to OFF, the indoor fan operates in
[Extra low].

2-4. Heat defrosting mode

The indoor fan stops.

No drain pump operation
However, when the control changes from COOL or DRY operation, the drain pump
operates for 3 minutes.

(1) Initial setting : OFF → HEAT···[last setting]

When changing the mode from exception of HEAT to HEAT
operation ···[Downward C]

(2) Vane position :

Horizontal →Downward A →Downward B →Downward C→Swing

(3) Restriction of vane position

1 The vane is horizontally fixed for the following modes.

(The control by the remote controller is temporarily invalidated and controlled by
the unit.)

• Thermo OFF

• Stand by (hot adjust) [Extra low] mode

• Heat defrost mode

3. Drain pump

4. Vane control
(Up/ down vane
change)

From the preceding page

18

8-5. AUTO OPERATION [AUTOMATIC COOL/HEAT CHANGE OVER OPERATION]

<How to operate>

1 Press POWER ON/OFF button.
2 Press the operation MODE button to display AUTO.
3 Press the TEMP. button to set the desired temperature.

NOTE: The set temperature changes 2°F when the or button is

pressed once. Automatic 67 to 83°F.
When in AUTO mode, the unit will switch from either heat or cool
automatically to maintain the set temperature.

˚F˚C

TEMP.

MENU

MONITOR/SET

BACK DAY

PAR-21MAA

TIME SUN MON TUE WED THU FRI SAT
TIMER
AFTER

ERROR CODE

˚F˚C

ONLY1Hr.

ON/OFF

CLOCK

ON
OFFHrAFTER

OPERATION

FUNCTION

FILTER

WEEKLY

SIMPLE

AUTO OFF

ON/OFF

FILTER

CHECK

CLEAR

TEST

Control modes

1. Initial value of
operation mode

2. Mode change

HEAT mode for room temperature < Desired temperature
COOL mode for room temperature ] Desired temperature

(1) HEAT mode → COOL mode

Room temperature ] Desired temperature + 3°F or 3 minutes has passed

(2) COOL mode → HEAT mode

Room temperature [ Desired temperature - 3°F or 3 minutes has passed

3. COOL mode

4. HEAT mode

Same control as cool operation
Same control as heat operation

8-6. WHEN UNIT IS STOPPED

Control modes

1. Drain pump

1-1. Drain pump control

The drain pump turns ON for the specified amount of time when any of the
following conditions is satisfied.

(regardless of whether the compressor is ON or OFF)

1 ON for 3 minutes after the operation mode is switched from COOL or DRY to

another operation mode (HEAT mode).

2 ON for 6 minutes after the drain sensor is determined to be submerged using the

liquid level detection method given below.

3 ON for 6 minutes after indoor piping (liquid piping) temperature – indoor room

temperature [ 14°F, and the drain sensor input is at the short or open level.
(If condition 2 or 3 is still being met after the drain pump has been turned ON for 6
minutes, the drain pump is kept ON for a further 6 minutes.)

Control details

Control details

Remarks

Remarks

1-2. Liquid level detection method

The liquid level is detected by determining whether or not the drain sensor is
submerged, based on the amount the temperature rises after self-heating the
sensor.
This process is performed if any of the following conditions is satisfied:

1 Drain pump is ON.
2 Indoor piping (liquid piping) temperature – indoor room temperature [ 14°F

(except during defrosting)

3 Indoor piping (liquid piping) temperature or indoor room temperature is at the

short or open level temperature.

4 Every 1 hour after the drain pump has been switched from ON to OFF.

19

9

Parts name Check points

Disconnect the connector then measure the resistance with a tester.
(At the ambient temperature 50°F~86°F)

Disconnect the connector then measure the resistance with a tester.

Measure the resistance between the terminals with a tester.
(At the ambient temperature 68°F~86°F)

Measure the resistance between the terminals with a tester.
(At the ambient temperature 68°F)

Measure the resistance after 3 minutes have passed since the power supply was turned off.
(At the ambient temperature 32°F~140°F

Vane motor (MV)

Linear expansion
valve (LEV)

Drain pump (DP)

Drain sensor (DS)

Refer to the next page for the details.

Refer to the next page for the details.

Refer to the next
page for the details.

Thermistor (TH21)
<Room temperature
detection>

Thermistor (TH22)
<Liquid pipe temperature
detection>

Thermistor (TH23)
<Gas pipe temperature
detection>

1
2

Blue

Blue

1
2
3

Normal

4.3k"~9.6k"

Abnormal

Open or short

Abnormal

Open or short

Normal

0.6k"~6.0k"

Abnormal

Open or short

Normal

150k" i10%

White-Red Yellow-Brown Orange-Red Blue-Brown

NormalConnector Abnormal

380" i7% Open or short

Normal Abnormal

400"~480" Open or short

Brown — Yellow
Brown — Red
Brown — Orange
Brown — Green

Orange

Red

White

Blue

Brown

Yellow

3

6

15

4

2

MV

M

Orange

Red

Brown

Green

Yellow

31

5

4

2

TROUBLE SHOOTING

9-1. HOW TO CHECK THE PARTS
PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E
PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1

20

<Thermistor characteristic graph>

Thermistor for
lower temperature

Thermistor <Room temperature detection> (TH21)
Thermistor <Liquid pipe temperature detection> (TH22)
Thermistor <Gas pipe temperature detection> (TH23)

< Thermistor for lower temperature >

50

40

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

Rt=15exp { 3480( ) }

1

273+(t-32)/1.8

1

273

30_F 15.8k'
50_F 9.6k'
70_F 6.0k'
80_F 4.8k'
90_F 3.9k'

100_F 3.2k'

Thermistor for
drain sensor

Drain sensor (DS)

Thermistor R0=6.0k' ±5%
Fixed number of B=3390K ±2%

Rt=6exp { 3390( ) }

1

273+(t-32)/1.8

1

273

30_F 6.3k'
50_F 3.9k'
70_F 2.5k'
80_F 2.0k'

90_F 1.6k'
100_F 1.3k'
140_F 0.6k'

30

20

Resistance (k")

10

0

0-20 20 40 60 80 100 120

Temperature (°F)

< Thermistor for drain sensor >

10

9

8

7

6

5

4

Resistance (k")

3

2

1

0

20 40 6080100 120 140 170

Temperature (°F)

Linear expansion valve

11

Operation summary of the linear expansion valve

• Linear expansion valves open/close through the use of a stepping motor after receiving the pulse signal from the indoor
controller board.

• Valve position can be changed in proportion to the number of pulse signals.

<Connection between the indoor controller board and the linear expansion valve>

Linear expansion valve

4

M

6

2

5

White

1

Red

3

Orange

Blue

Brown

Yellow

4

[

3

[

2

[

1

[

Brown

Red

Blue

Orange

Yellow

White

Connector (CN60)

Controller board

DC12V

6
5

4
3

2
1

Drive circuit

4

[

3

[

2

[

1

[

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.

21

<Output pulse signal and the valve operation>

D

A

E

B

C

Open

Extra tightening (80~100pulse)

Pulse number

2000 pulse
Opening a valve
all the way

Close

Valve position (capacity)

Thermistor
(Liquid pipe)

Linear
expansion
valve

2

OFF

ON
ON

OFF

Output

3
OFF
OFF

ON
ON

4

ON
OFF
OFF

ON

Output

(Phase)

{1
{2
{3
{4

22

Linear expansion valve operation

1
ON
ON

OFF
OFF

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
send till it goes to point A in order to define the valve position.

• When the valve moves smoothly, there is no sound 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
sound can be heard than in a normal situation.

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

33

Trouble shooting

Symptom

Operation circuit fail­ure of the micro
processor

Linear expansion
valve mechanism is
locked.

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

Valve doesn't close
completely.

Wrong connection of
the connector or
contact failure

Check points

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

When power is turned on, pulse signals will send for 10
seconds. If the LED does not light or keeps lighting even
after the signals stop, that means some failures in the
operation circuit.

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.

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

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

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.

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

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,

LED1k"

6
5
4
3
2
1

22

Countermeasures

Exchange the indoor con­troller board at drive circuit
failure.

Exchange the linear
expansion valve.

Exchange the linear
expansion valve.

If large amount of refriger­ant is leaked, exchange
the linear expansion valve.

Disconnect the connector
at the controller board,
then check the continuity.

9-2. TROUBLESHOOTING

Notes

· High voltage is applied to the connecter (FAN) for the fan motor. Give attention to the service.

· Do not pull out the connector (FAN) for the motor with the power supply on, doing so may result in damage to the board.
Self check

Conditions : The indoor fan does not rotate.

Turn OFF the power supply.
Wiring contact check
Contact of fan motor connector (FAN)
Contact of power supply cable.

Fan motor check
Measure the resistance between the fan motor connecter 1(+) and 3(–).
(With the connector pulled out from the

board)

Turn ON the power supply.
Power supply check
Check the voltage of the indoor controller board with the connector (FAN) connected to the board.
Approx. 294~325V DC between the connecter (FAN) 1(+) and 3(–)

Fan motor position sensor signal check
Rotate the fan motor more than one turn slowly and check the voltage between
the connector (FAN) 6(+) and 3(–) with the connector (FAN) connected to the board.

Indoor controller board fuse check
Turn off the power supply and check if there is
any broken wire by using a tester.

Check method of indoor fan motor (fan motor / controller board)

Correct wiring connection.

Replace the fan motor.

Is the resistance 1M" or more?

Replace the fuse.

Replace the fan motor.

Does the voltage repeat 0V DC and 15V DC ?

Replace the indoor controller board.

Replace the indoor controller board.

Is the voltage normal?

Is the fuse normal?

Was contact good?

Yes

1

2

Yes

No

Yes

Yes

No

No

No

No

Yes

23

9-3. FUNCTION OF DIP SWITCH

PMFY-P·NBMU-E PMFY-P·NBMU-E

1

Switch Function Remarks

<Initial setting>

ON

OFF

123456789

10

Address board

Operation by switch

ON OFF

Pole

Built-in remote controller
Provided
2,500h
Effective

Fan operation at Heating mode

Low w
Setting air flow
Effective
Effective

Filter clogging detection
Filter cleaning sign
Fresh air intake

Humidifier control
Air flow at
Heat thermo OFF
Auto restart function
Power ON/OFF by breaker

Indoor unit
Not provided
100h
Not effective

Thermo ON operation at
Heating mode

Extra low w
Depends on SW1-7
Not effective
Not effective

Cooling only
Available
Available
Available
Second setting w6
Horizontal angle
Effective
Not effective

—
—

Heat pump / Cool only
Louver
Vane
Vane swing function
Vane horizontal angle
Vane cooling limit angle setting w4

Heating 4deg. up
Target superheat setting w5
Target sub cool setting w5

Heat pump
Not available
Not available
Not available
First setting
Down B, C
Not effective
Effective

—
—

1
2
3
4
5
6
7
8
9

10

1
2
3
4
5
6
7
8
9

10

SW1

Function

setting

SW2

Capacity

code

setting

1~6

1~5

SW3

Function

setting

SW4

Model

Selection

(Setting

for

PMFY

series)

Changing the opening of linear
expansion valve when the
thermostat is OFF

Thermistor <Room temperature
detection> position

<Initial setting>

ON

OFF

123456789

10

Indoor controller board

( w4 ) At cooling mode, each
angle can be used only
1 hour.

Do not use SW3-9, 10 as trouble
might be caused by the usage
condition.

w6 Second setting

means first setting.

Indoor controller board

<Initial setting>

Set for each capacity.

Indoor controller board

(

w5

) SW 3-9 setting
PMFY-P06, P08NBMU-E=ON
PMFY-P12, P15NBMU-E=OFF
SW 3-10 setting
PMFY-P06, P08NBMU-E=ON
PMFY-P12, P15NBMU-E=OFF

ON

OFF

12345

ON

OFF

12345

ON

OFF

MODELS

PMFY-P06NBMU-E

PMFY-P08NBMU-E

PMFY-P12NBMU-E

PMFY-P15NBMU-E

SW 2 MODELS SW 2

123456

ON

OFF

123456

ON

OFF

123456

ON

OFF

123456

Under
suspension

Under
suspension

Before
power
supply
ON

Before
power
supply
ON

Effective

timing

Switching remote
controller display

Indicating if the
thermo is ON

Indicating fan operation
ON/OFF

In case replacing the indoor controller board, make sure to set the switch to the
initial setting, which is shown below.

SW 1-7

OFF

ON

OFF

ON

SW 1-8

OFF
OFF

ON
ON

SW 1-8
Extra low
Low
Setting air flow
stop

w

24

Switch Pole RemarksOperation by switch

Effective

timing

SW11
1st digit
address

setting

SW12

2nd digit

address

setting

SW14

Connection

No.

setting

SW5

Voltage

Selection

Rotary switchRotary switch

2

SW1210SW11

0

9

8

7

6

5

220V

(208V)

1

2

3

4

SW14

0

F

E

D

C

B

A

9

8

7

1

2

3

4

5

6

7

8

9

240V

(230V)

0

1

2

Address setting should be done when M-NET

3

4

6

5

remote controller is being used.

1

This is the switch to be used when the indoor
unit is operated with R2 series outdoor unit
as a set.

If the unit is used at the 230V area,
set the voltage to 230V.
If the unit is used at the 208V, set the voltage
to 208V.

Before
power
supply
ON

Address board

<Initial setting>

SW12 SW11

0

9

8

7

6

0

1

9

2

8

3

7

4

6

5

Address board

<Initial setting>

SW14

0

1

2

F

3

E

4

D

5

C

6

B

7

A

8

9

Address board

<Initial setting>

220V

(208V)

240V

(230V)

1

2

3

4

5

25

9-4. TEST POINT DIAGRAM
PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E
PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1

CN32

CN27
Connector
(Damper)

SW2
Capacity setting

SW3
Function setting

Connector
(Remote switch)

SW4
Model selection

CN25
Connecter
(Humidifier)

CN6V
Vane motor output
(MV)

CN52
Remote indication

CN51
Centrally control

CN41
HA terminal-A

CN60
Linear expansion
valve output (LEV)

CNP
Drain pump output
(DP)

11

11

33

to

33

to

Between
208-230V AC

CND
Connect to the
terminal block (TB2)
(Power supply for
indoor controller

board connecting
wire)

Between

208-230V AC

FUSE

6.3A 250V

FAN
Fan motor output
(MF)

CN20
Room temperature
thermistor (TH21)

CN21
Pipe temperature
thermistor/Liquid
(TH22)

CN29
Pipe temperature
thermistor/Gas
(TH23)

CN31
Drain sensor (DS)

LED2
Power supply (R.B)

CN3A
Connect to the terminal block (TB15)
(MA-Remote controller connecting wire)

11

Between

to 338.7-13V DC (Pin11(+))

26

LED1
Power supply (I.B)
(Indoor unit :

208-230V)

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

DISASSEMBLY PROCEDURE10

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E
PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1

Be careful when removing heavy parts.

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

1. Removing the intake grille
Opening the air intake grille

(1) Press the of the air intake grille.(See figure 1)
(2) Put your fingers on both ends of the air intake grille and let

it down after the grille clicks.

Removing the air intake grille

(1) Press the of air intake grille, and pull down both

ends with your fingers after the grille clicks.
(See figure 1)

(2) Pull out the handle of air intake grille toward you.

(See figure 2)

(3) Unhook the string, which secures air intake grille.

(See figure 3)

PUSH

PUSH

Photo 1

Air filter

Figure 1

27

Figure 2

Figure 3

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

2. Removing the electrical parts box

(1) Remove the panel.
(2) Remove the address board cover.
(3) Remove the electrical parts cover.
(4) Disconnect the connectors of

fan motor, vane motor,
drain pump, room temperature thermistor,
pipe temperature thermistor,
condenser/evaporator temperature thermistor,
and drain sensor on the electrical controller board.

(5) Disconnect the lead wire and earth wire from terminal

block.

(6)Remove the electrical parts box.

3. Removing the nozzle
Note when the nozzle is removed.

· The insulation material (white) which prevents water
drop is mounted to the side of vane motor. Remove the
insulation material before removing nozzle.
(See figure 4)

·After completing the service, re-mount the insulation
material as before as shown in right figure.

·After service, mount the double layer insulation
without fail.
The hard material side should be faced toward the
nozzle. (See figure 4)

(1) Remove the panel.
(2) Remove the room temperature thermistor.
(3) Unhook the claws in the middle of nozzle and remove the

drain pan. (5 screws) (See photo 2)
(4) Remove the nozzle side of the heat exchanger.(2 screws)
(5) Remove the address board cover.
(6) Remove the electrical parts cover.
(7) Disconnect the connector of vane motor.
(8) Remove the insulation material (white) on the right side of

nozzle.
(9)Remove the nozzle. (6 screws)

Photo 2

Drain pan

Photo 3

Photo 4

Nozzle

Room temperature thermistor

Figure 4

Hard side of insulation

Nozzle

Vane motor

Claw in middle
of nozzle

Insulation material

Nozzle

Heat exchanger

Soft side of insulation

Electrical parts

Electrical parts
cover

Address board
cover

Vane motor

4. Removing the vane motor

(1) Remove the nozzle. Refer to above-mentioned 3

Removing the nozzle.
(2) Remove the vane motor.

Photo 5

Vane motor

28

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

5. Removing the drain pump

(1) Remove the panel.
(2) Unhook the claw in the middle of nozzle and remove the

drain pan.
(3) Remove the address board cover.
(4) Remove the electrical parts cover.
(5) Disconnect the connector of drain pump.
(6) Remove the drain hose.
(7) Remove the drain pump.(2 screws)

6. Removing the fan motor and line flow fan

(1) Remove the panel.
(2) Unhook the claw in the middle of nozzle and remove the

drain pan.
(3) Unscrew 2 screws at the nozzle side of the heat exchanger.
(4) Remove the address board cover.
(5) Remove the electrical parts cover.
(6) Disconnect the connector of vane motor, fan motor and

drain pump.
(7) Remove the nozzle side of the heat exchanger.(2 screws)
(8) Remove the nozzle.
(9) Remove the drain pump.

(10) Unscrew 2 screws in the motor support.
(11) Remove the fan motor and line flow fan. (The fan motor

and line flow fan can be removed without removing the

heat exchanger.)

Photo 6

Photo 7

Line flow fan

Drain sensor

Drain pump

Fan motor

Fan motor

7. Removing the thermistor<Room temperature detection>

(1) Remove the panel.
(2) Remove the address board cover.
(3) Remove the electrical parts cover.
(4) Remove the thermistor. <intake temperature detector>
(5) Disconnect the lead wire from the cord clamp. (5 points)
(6) Disconnect the connector (CN20) on the indoor controller

board.

8. Removing the thermistor
<Liquid pipe temperature detection>

<Gas pipe temperature detection>

(1) Remove the panel.
(2) Remove the address board cover.
(3) Remove the electrical parts cover.
(4) Remove the drain pan.
(5) Remove the thermistor <Gas pipe temperature detection>

/<Liquid pipe temperature detection>.
(6) Disconnect the lead wire from the cord clamp.
(7) Disconnect the connector (CN21)/(CN29) on the indoor

controller board.

29

11

1
2
3
4
5
6
7
8

9
10
11

1
2
2
2
1
1
1
2
1
2
1

AIR OUTLET GRILLE
LATCH
PANEL HOOK
GRILLE CATCH
L.L.FILTER
L.L.FILTER
INTAKE GRILLE
GRILLE CATCH
RECEIVER COVER
MAGNET
SCREW CAP

No.

Part No.

Part Name Specification

Q'ty/set

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom­mended

Q'ty

PMP-16BMU

T7W E11 003
R01 E00 055
R01 E00 099
R01 E01 054
R01 E01 500
R01 E02 500
TW7 E01 691
R01 E00 054
R01 E00 648
R01 E00 044
R01 E00 096

PARTS LIST (non-RoHS compliant)

PANEL PARTS FOR
PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E
PMP-16BMU

10

11

1

10

2

3

4

2

3

9

4

5

8

6

7

30

FUNCTIONAL PARTS

1
2
3
4
5

6
7

8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

1
1
1
1
1

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

1
1
1
1
1
1

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

PMFY-P · NBMU-E

TH21

TH22
TH23

LEV

MV

DS
DP

MF

BEARING MOUNT
SLEEVE BEARING
LINE FLOW FAN
STABILIZER ASSY
VANE SLEEVE
HEAT EXCHANGER
HEAT EXCHANGER
DRAIN PAN ASSY
THERMISTOR
GUIDE VANE
THERMISTOR
THERMISTOR
LINEAR EXPANSION VALVE
VANE
VANE MOTOR
CASING ASSY
SENSOR HOLDER
DRAIN SENSOR
DRAIN PUMP
MOTOR SUPPORT
FAN MOTOR
RUBBER MOUNT
DRAIN PIPE ASSY
SCREW ASSY

ROOM

LIQUID
GAS

No. Part No. Part Name Specification

Q'ty/set

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom­mended

Q'ty

06/ 08 12/ 15
R01 22A 102
R01 005 103
R01 E02 114
R01 E00 079
R01 E00 092
T7W K08 480
T7W K09 480
R01 E10 529
R01 E00 202
R01 E00 038
R01 E01 202
R01 E03 202
R01 E66 401
R01 E01 002
R01 E01 223
R01 E00 110
R01 31K 241
R01 E01 266
T7W E07 355
R01 E00 130
R01 E14 220
R01 E07 105
R01 E00 527
R01 E01 673

PMFY-P06NBMU-E
PMFY-P08NBMU-E
PMFY-P12NBMU-E
PMFY-P15NBMU-E

22

21

17

1
2
3

20
19

16

15

18

14

4

13

5

12

6

7
8

Part number that is circled is not shown in the figure.

31

11

10
9

ELECTRICAL PARTS

1
2
3
4
5
6

TB2
TB5

TB15

A.B

I.B

TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
ADDRESS BOARD
CABLE ASSY
INDOOR CONTROLLER BOARD

3P (L1,L2,G)
3P (M1,M2,S)
2P(1,2)

with POWER BOARD

No. Part No. Part Name Specification

Q'ty/set

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

PMFY-P

06/08/12/15

NBMU-E

1
1
1
1
1
1

T7W E11 716
T7W E17 716
R01 556 246
T7W E00 294
R01 E00 304
T7W E43 310

CNP

FAN

CN60

CN6V

RG79L094H01

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E

6

1

2

3

4

32

5

12

1
2
3
4
5
6
7
8

9
10
11

1
2
2
2
1
1
1
2
1
2
1

AIR OUTLET GRILLE
LATCH
PANEL HOOK
GRILLE CATCH
L.L.FILTER
L.L.FILTER
INTAKE GRILLE
GRILLE CATCH
RECEIVER COVER
MAGNET
SCREW CAP

No.

G
G
G
G
G
G
G
G
G
G
G

RoHS

Part No. Part Name Specification

Q'ty/set

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

PMP-16BMU

T7W E16 003
R01 E01 055
R01 E01 099
R01 E07 054
R01 E14 500
R01 E15 500
T7W E04 691
R01 E06 054
R01 E01 648
R01 E01 044
R01 E04 096

RoHS PARTS LIST

PANEL PARTS FOR
PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E
PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1
PMP-16BMU

10

11

10

1

2

3

4

2

3

9

4

5

8

6

7

33

FUNCTIONAL PARTS

1
2
3
4
5

6
7

8

9
10
11
12
13
14
15
16
17
18
19

20
21

22

23

1
1
1
1
1

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

1
1
1

1
1
1
1
1
1

1
1
1
1
1
1
1
1
1
1
1
1
1
1

1
1
1

PMFY-

TH21

TH22
TH23

LEV

MV

DS
DP

MF
MF

BEARING MOUNT
SLEEVE BEARING
LINE FLOW FAN
STABILIZER ASSY
VANE SLEEVE
HEAT EXCHANGER
HEAT EXCHANGER
DRAIN PAN ASSY
THERMISTOR
GUIDE VANE
THERMISTOR
THERMISTOR
LINEAR EXPANSION VALVE
VANE
VANE MOTOR
CASING ASSY
SENSOR HOLDER
DRAIN SENSOR
DRAIN PUMP
MOTOR SUPPORT
FAN MOTOR
FAN MOTOR
RUBBER MOUNT
DRAIN PIPE ASSY
SCREW ASSY

ROOM

LIQUID
GAS

No.

G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G

RoHS

Part No. Part Name Specification

Q'ty/set

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

06/08 12/15

1
1
1
1
1

1
1
1
1
1
1
1
1
1
1
1
1
1
1

1
1
1
1

1
1
1
1
1
1

1
1
1
1
1
1
1
1
1
1
1
1
1

1
1
1
1

06/08 12/15

R01 23A 102
R01 E04 103
R01 E32 114
R01 E01 079
R01 E02 092
T7W H08 480
T7W H09 480
R01 E30 529
R01 H12 202
R01 E03 038
R01 H16 202
R01 H17 202
R01 H06 401
R01 E16 002
R01 E18 223
R01 E05 110
R01 32K 241
R01 E11 266
T7W E11 355
R01 E35 130
R01 E24 220
R01 E45 220
R01 E13 105
R01 E05 527
R01 E03 673

P·NBMU-E P·NBMU-E1

PMFY-P06NBMU-E
PMFY-P08NBMU-E
PMFY-P12NBMU-E
PMFY-P15NBMU-E
PMFY-P06NBMU-E1
PMFY-P08NBMU-E1
PMFY-P12NBMU-E1
PMFY-P15NBMU-E1

22

21

17

1
2

3

20

19

16
15

18

14

4

13

Part number that is circled is not shown in the figure.

5

12

6

11

7
8

34

10

9

ELECTRICAL PARTS

1
2
3
4
5
6

7

TB2
TB5

TB15

A.B

FUSE

I.B
I.B

TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
ADDRESS BOARD
CABLE ASSY
FUSE
INDOOR CONTROLLER BOARD
INDOOR CONTROLLER BOARD

3P (L1,L2,G)
3P (M1,M2,S)
2P(1,2)

250V, 6A

No.

G
G
G
G
G
G
G
G

RoHS

Part No. Part Name Specification

Q'ty/set

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom­mended

Q'ty

PMFY-P06/08/12/15

NBMU-E

1
1
1
1
1
1
1

NBMU-E1

1
1
1
1
1
1

1

T7W E41 716
R01 E27 246
R01 E21 246
T7W E01 294
R01 E07 304
T7W 420 239
T7W E59 310
T7W E67 310

CNP

FAN

CN60

CN6V

RG79L094H01

PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E
PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1

7

6

1

2

3

4

35

5

HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN

cCopyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Distributed in Jul. 2007. No. OC341 REVISED EDITION-B PDF 9
Distributed in Aug. 2006. No. OC341 REVISED EDITION-APDF 9
Distributed in Jun. 2005. No. OC341 PDF 10
Made in Japan

New publication, effective Jul. 2007
Specifications subject to change without notice