Mitsubishi Electric City Multi PKFY, City Multi PKFY-P08NBMU-E, City Multi PKFY-P06NBMU-ER1, City Multi PKFY-P06NBMU-E, City Multi PKFY-P08NBMU-ER1 Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

R22R410A

Indoor unit
[Model names] [Service Ref.]

PKFY-P06NBMU-E

PKFY-P06NBMU-E
PKFY-P06NBMU-ER1

PKFY-P08NBMU-E

PKFY-P08NBMU-E
PKFY-P08NBMU-ER1

September 2012

No. OCH461

REVISED EDITION-B

Revision:

• "8-2. Function of Dip
switch" has been modified.

• Some descriptions have
been modified.

• Please void OCH461
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.

INDOOR UNIT

Model name
indication

CONTENTS

1. TECHNICAL CHANGES

2. PART NAMES AND FUNCTIONS

3. SPECIFICATION

4. OUTLINES AND DIMENSIONS

5. WIRING DIAGRAM

6. REFRIGERANT SYSTEM DIAGRAM

7. MICROPROCESSOR CONTROL

8. TROUBLESHOOTING

9. DISASSEMBLY PROCEDURE

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

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PARTS CATALOG (OCB461)

..........

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

..........

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2
2
5
7
8

9
10
15
23

Use the specifi ed refrigerant only

OCH461B

Never use any refrigerant other than that specifi ed.

Doing so may cause a burst, an explosion, or fi re when the unit is being used, serviced, or disposed of.
Correct refrigerant is specifi ed 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.

1

TECHNICAL CHANGES

PKFY-P06NBMU-E PKFY-P06NBMU-ER1
PKFY-P06NBMU-E PKFY-P06NBMU-ER1

HEAT EXCHANGER and WATER CUT have been changed.

2

PART NAMES AND FUNCTIONS

Indoor unit

Air intake

Filter

Grille

Louver

Vane

Air outlet

2

Wireless remote controller

OCH461B

display

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

display

The vertical direction of air flow is indicated.

display

FAN SPEED display indicates which fan
speed has been selected.

ON/OFF button

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

FAN SPEED SELECT button

Used to change the fan speed.

MODE SELECT button

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

+ In case the outdoor unit is cool only type, the

heating and auto mode are not available.

CHECK-TEST RUN button

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

VANE CONTROL button

Used to change the air flow direction.

CHECK

TEST RUN

display

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

MODEL SELECT

Blinks when model is selected.

display

CHECK

TEST RUN

MODEL SELECT

NOT AV AILABLE

°F
°C

AMPM

AMPM

ON/OFF TEMP

MODE

CHECK

TEST RUN

FAN

VANE

LOUVER

RESETSET CLOCK

AUTO STOP

AUTO START

h

min

display

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

display

SET TEMP. display indicates the set desired
temperature.

CLOCK display

Displays the current time.

TIMER display

Displays when in timer operation or when
setting timer.

“ ” “ ” display

Displays the order of timer operation.

“ ” “ ” display

Displays whether timer is on or off.

button

SET TEMPERATURE button sets any desired
room temperature.

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.

h and min buttons

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

LOUVER button

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

CLOCK button
RESET button

SET button

33

Wired remote controller

OCH461B

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.

Operation Section

Temperature setting buttons

Down
Up

Timer Menu button
(Monitor/Set button)

Mode button (Return button)

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.

TIME SUN MON TUE WED THU FRI SAT
TIMER
AFTER

ERROR CODE

°F°C

Hr
AFTER

°F°C

ONLY1Hr.

Up/Down Air Direction indica­tor

The indicator shows the direc­tion of the outcoming airflow.

“One Hour Only” indicator

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.

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.

ON
OFF

FUNCTION

FILTER

WEEKLY

SIMPLE

AUTO OFF

“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.

Fan Speed indicator

Shows the selected fan speed.

Ventilation indicator

Appears when the unit is running in
Ventilation mode.

ON/OFF button

Fan Speed button

Filter button
(<Enter> button)

Set Time buttons

Back

Ahead

Timer On/Off button
(Set Day button)

Opening the
cover

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.

TEMP.

MENU

MONITOR/SET

BACK DAY

PAR-21MAA

CLOCK

ON/OFF

OPERATION

Built-in temperature sensor

4

ON/OFF

FILTER

CHECK

CLEAR

TEST

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

3

OCH461B

SPECIFICATION

3-1. Specifi cations

Service Ref.

Power source
Cooling capacity

(Nominal)

Power input

Current input
Heating capacity
(Nominal )

Power input

Current input
External finish
External dimension H × W × D

Net weight
Heat exchanger
Fan

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

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

Liquid

Gas

(R410A)

(R410A)

Field drain pipe size
Standard
attachment

Optional parts
Remarks

Document
Accessory
External heater adapter
Installation

*1
*1

*2
*2

(R22)

(R22)

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

mm
in.
kg (lb)

Pa
mmH

2

kW

3

/min

m
L/s
cfm
dB <A>

mm (in.)

mm (in.)

mm (in.)

PKFY-P06NBMU-E

PKFY-P06NBMU-ER1

PKFY-P08NBMU-E

PKFY-P08NBMU-ER1

1-phase 208/230V 60Hz

1.8

6,000

0.03

0.15

2.0

6,700

0.03

0.15

2.3

8,000

0.03

0.15

2.6

9,000

0.03

0.15

Plastic, MUNSELL (1.0Y 9.2/0.2)

295 × 815 × 225

11-5/8" × 32-1/8" × 8-7/8"

10 (22)

Cross fin (Aluminum fin and copper tube)

Line flow fan × 1

0

O

0

1-phase induction motor

0.008

Direct-driven by motor

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

170 - 180 - 200 - 210

32 - 33 - 35 -36

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

170 - 180 - 200 - 210

32 - 33 - 35 -36

Polyethylene sheet

PP honeycomb

Fuse

LEV

R410A, R22 CITY MULTI
ø6.35 (ø1/4")
ø6.35 (ø1/4")
ø12.7 (ø1/2")
ø12.7 (ø1/2")

Flare
Flare
Flare
Flare

ø6.35 (ø1/4")
ø6.35 (ø1/4")
ø12.7 (ø1/2")
ø12.7 (ø1/2")

Flare
Flare
Flare
Flare

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

Installation Manual, Instruction Book

MA remote controller cable

PAC-SA88HA-E

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

Note :

Pipe length :

Level difference :

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

*1 Nominal cooling conditions

Indoor :

Outdoor :

80°FDB/67°FWB (26.7°CDB/19.4°CWB)
95°FDB (
25 ft. (7.6 m)
0 ft (

35°CDB)

0 m)

*2 Nominal heating conditions

70°FDB(21°CDB)
47°FDB/43°FWB (8.3°CDB/6.1°CWB)
25 ft. (7.6 m)
0 ft (0 m)

55

Unit converter

kcal/h = kW × 860
Btu/h = kW × 3,412

3

cfm = m
lb = kg/0.4536

*Above specification data is
subject to rounding variation.

/min × 35.31

3-2. Electrical parts specifi cations

OCH461B

Service Ref.

Parts name

Room temperature
thermistor

Liquid pipe thermistor

Gas pipe thermistor
Fuse

(Indoor controller board)
Fan motor

(with thermal fuse)
Fan motor capacitor

Vane motor
(with limit switch)

Linear expansion valve
Power supply terminal

block
Transmission terminal

block
MA remote controller

terminal block

3-3. Sound levels

Symbol

TH21
TH22

TH23

FUSE

MF

C1

MV

LEV

TB2

TB5

TB15

PKFY-P06NBMU-E

PKFY-P06NBMU-ER1

PKFY-P08NBMU-E

PKFY-P08NBMU-ER1

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

4-Pole Output 8W / PS4N8-KB

1.2 × 440V

MSFBC20 DC12V

DC12V Stepping motor drive

Port :3.2 (0~2000pulse)

(L1, L2, GR) 250V 20A

(M1, M2, S) 250V 20A

(1, 2) 250V 10A

Service Ref.

Sound level at anechoic room : Low-Middle2-Middle1-High

PKFY-P06NBMU-E
PKFY-P06NBMU-ER1

PKFY-P08NBMU-E
PKFY-P08NBMU-ER1

Sound level dB (A)

32-33-35-36

32-33-35-36

3.3 ft.

(1m)

3.3 ft.

Measurement location

* Measured in anechoic room.

(1m)

3-4. NC curve

PKFY-P06/08NBMU-E(R1)

External static pressure : 0Pa
Power source : 208,230V, 60Hz

70.0

MPa

65.0

60.0

55.0

50.0

45.0

40.0

35.0

30.0

25.0

20.0
Approximate minimum

audible limit on

15.0

continuous noise

10.0

OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20

63 125 250 500 1k 2k 4k 8k

OCTAVE BAND CENTER FREQUENCIES(Hz)

6

High speed
Low speed

NC60

NC50

NC40

NC30

NC20

4

OCH461B

OUTLINES AND DIMENSIONS

PKFY-P06NBMU-E
PKFY-P08NBMU-E
PKFY-P06NBMU-ER1
PKFY-P08NBMU-ER1

Detailed figure dwg (ABC)
(Knockout hole)

2-1/8(54)

31/32(24.4)

13/32(10) 1-25/32(45)

3°

5°

R19/32(R15)

R19/32(R15)

R5/16(R8)

45°

Required space

11-5/8(295)

Knockout hole for
left piping

Knockout holt for
under piping

Knockout hole of
remote control wiring

30-13/16(783)

32-1/8(815)

25-3/16(640)

Air intake

25-3/16(640)

26-31/32(660)(Drain pipe total 29-29/32(760))

R19/32(R15)

R5/16(R8)

13/32(10)

3/32(2.5)

5/8(16)

2-3/8(60mm) or more for
left and left back piping.

27-3/8(695)

17-23/32(450)

20-25/32(520)

1-31/32(50)

3-19/32(91.5)1-25/32(45)

Air intake

Air outlet

Liquid pipe

R15/32(R12)

R5/16(R8)

13/32(10)

1-11/32(34)

4-3/16(106.7)

1/8(3)

Gas pipe

4-1/2(115)

2-3/8

(60)

4-11/32(110)

4-9/16(116)

Knockout hole of
right piping

Knockout hole for
remote control wiring

5/32(4) 1-31/32(50)

3/32(2.5) 5/8(16)

Air intake

3-15/16(100.6)17/32(14)

Air intake
(Direction)

Power supply
Transmission

Address board

Air outlet
(Direction)

8-7/8(225) 3/16(5)

Air intake
(Direction)

2-7/8

(74.6)

1-7/16(37.8)

Air outlet

Air outlet

Address board
Detailed

Unit : inch (mm)

installaion plate

Terminal block

1/4

(7)

Air intake

Address board

Connection No.

Address setting digit

Mode selection

*3 Address board is protected

by a plastic cover.

Remove the screw holding

the cover with screw-driver

at the time of address setting.

Min55/64(22) Min25/32(20)

Installation plate balance point hole

3/16×1-3/8(4.5×35) 4 holes

Installation plate

6-1/4(159)
5-1/4(133)

4-13/16(122.5)

3-27/32(97.5)

3-11/32(85)

2-27/32(72.5)

2-3/8(60)

1-7/8(47.5)

7/8(22.5)

0

19/32(15)

3-17/32(90)

4-1/32(102.5)

4-7/8(124)

8-:5/32(:4.3) holes

12-29/32(328)

16-1/32(407.5)

12-29/32(328)

11-5/8(295)

10-1/4(260)

9-1/4(235)

Min3-15/16(100)

Details of installation plate

0

8-27/32(225)

7-15/32(190)

6-3/32(155)

6-1/4(159)

6-7/8(175)

8-1/16(205)

6-11/16(170)

4-23/32(120)

1-3/16(30)

3-11/32(85)

1-3/16(30)

0

13/32(10)

13/32(10)

Knock of hole

12-:1/8(:2.8)holes

4-:11/32(:9)holes

Min1-31/32(50)

Min3-35/64(90)

4-23/32(120)

3-11/32(85)

1-3/4(45)

1-23/32(44)

1-31/32(50)

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 use

MA-remote controller cable in an accessories to the connector.

1/4F(:6.35)
1/2F(:12.7)
:5/8(:16) I.D

6-5/8(168)
5-5/16(135)

4-29/32(125)
4-11/32(110)

1-3/8(35)
13/32(10)
0
1-3/32(27.5)
1-9/16(40)
2-3/32(53)
2-9/16(65)
3-7/16(87)
4-7/16(113)
5-1/32(128)

7-3/32(180)

7-15/32(190)

8-27/32(225)

6-3/32(155)

6-7/8(175)

8-1/16(205)

6-11/16(170)

Refrigerart
piping

Liquid pipe

Drain pipe

11-23/32(298)

10-1/4(260)

3/16×1-15/32(4.5×37) 4 holes
3/16×1-9/16(4.5×40) 4 holes

9-1/4(235)

11-23/32(298)

Piping hole:2-9/16(:65)

Gas pipe

16-1/32(407.5)

87-:3/16(:5.1)holes

77

WIRING DIAGRAM5

OCH461B

PKFY-P06NBMU-E PKFY-P08NBMU-E
PKFY-P06NBMU-ER1 PKFY-P08NBMU-ER1

Legend

Symbol

I.B

CN32
CN51
CN52

Indoor controller board
Connector

Name

Remote switch
Centrally control
Remote indication,
External heater

Capacity code

Mode selection

P.B

SW2

Switch

SW3

Indoor power board

ZNR Varistor

Fuse (6A 250V)

FUSE
F.C

Fan phase control
Capacitor (Fan motor)

C1

M

LEV

W.B

SW2SW1

RU

LED2

LED1

9

CNB

BZ

6

YLW

WHT

ORN

11

CN60

LEV

(WHT)

A.B

SW5

208V 230V

SW1

ON

OFF

1234567891

0

1

9

2

8

3

7

4

6

5

10ths
DIGIT1sDIGIT

Note

0

1

9

8

7

4

6

5

0

2

3

(RED)

ADDRESS

CN43

(RED)

ADDRESS

CN82

SW14SW11SW12

F

E

D

C

B

A

BRANCH

No.

4

1

0

1

2

3

4

5

6

7

8

9

8

1

See Fig.1

4

8

ON

OFF

123456789

I.B

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.)

12

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 230V side when the power supply is 230 volts.
When the power supply is 208 volts, set SW5 to 208V side.

Symbol

MF Fan motor
MV
LEV
TB2
TB5
TH21

TH22

TH23

5

9

BLU

BRN

RED

CN5V
VANE
(BLU)

1515

CN52CN51

SW2SW3

1234

10

Vane motor
Linear expansion valve
Terminal

block
Thermistor

RED

1

WHT
BLU

M

ORN
YLW

5

MV

56

141 8

CN42

ADDRESS

(RED)

CN90

WIRELESS

(WHT)

CN32

91

CN81

ADDRESS

(RED)

14

13

Power supply

Room temp.detection
(32°F/15k

t° t° t°

CN41

CN35M

(BLU)

Name

Symbol

A.B

Transmission

,77°F/5.4k)

W.B

Pipe temp.detection/Liquid

(32°F/15k,77°F/5.4k)

Pipe temp.detection/Gas

(32°F/15k,77°F/5.4k)

TO MA-REMOTE

TH23 TH22

2
CN29
GAS
(BLK)

ORN

13
CN3A

MA-

REMOCON

(BLU)

13

5

CN53M

(RED)

112
CN21

LIQUID

(WHT)

ORN

1

TH21

12

CN20

INTAKE

(RED)

LED2

CONTROLLER
DC8.7-13V

1

2

M

1~

MF

13

CN35P

(BLU)

5

CN53P
(RED)

1

LED1

P.B

Address board

Name

SW1
SW5
SW11
SW12
SW14

Switch

Mode selection
Voltage selection
Address setting 1s digit
Address setting 10ths digit
Branch No.

Wireless remote controller board
Receving unit

RU

Buzzer

BZ
LED1 LED(Operation indicator:Green)

(Preparation for heating:Orange)

LED

LED2
SW1

Emergency operation (Heat)
Emergency operation (Cool)

SW2

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

M1M2

TB5

BLU

BLU

RED

WHT

FAN

(GRN)

12

146
CN2M
M-NET

(BLU)

C1

ZNR

F.C

RED

BLK

BLU

13

CND

(RED)

FUSE

250V

6A

U

<+>

TB2

L1
L2

GR

GRN /YLW

BREAKER
(16A)

TO NEXT
INDOOR UNIT

POWER SUPPLY
208/230V 60Hz

PULL
BOX

FUSE
(16A)

LED on indoor board for service

Mark Meaning

Main power supply

LED1

Power supply for

LED2

MA-Remote controller

Main power supply (indoor unit: 208-230V)
power on lamp is lit

Power supply for MA-Remote controller
on lamp is lit

<Fig. 1>

MODELS SW2

P06

ON

OFF

1234

<+ >Use copper supply wires.

Function

MODELS SW2

P08

ON

OFF

1234

8

6

OCH461B

REFRIGERANT SYSTEM DIAGRAM

PKFY-P06NBMU-E PKFY-P08NBMU-E
PKFY-P06NBMU-ER1 PKFY-P08NBMU-ER1

Gas pipe temperature thermistor
TH23

Gas pipe

Heat exchanger

Room temperature thermistor
TH21

Service ref.

Item

Gas pipe {12.7 (1/2”)

Liquid pipe {6.35 (1/4”)

Liquid pipe temperature thermistor
TH22

Strainer
(#100mesh)

Linear expansion

valve

Unit: mm(inch)

PKFY-P06/08NBMU-E

PKFY-P06/08NBMU-ER1

Strainer
(#100mesh)

Liquid pipe

Strainer
(#100mesh)

Flare

9

7

OCH461B

MICROPROCESSOR CONTROL

INDOOR UNIT CONTROL
7-1. COOL OPERATION

TEMP.

MENU

MONITOR/SET

BACK DAY

PAR-21MAA

Control modes

1. Thermo stat
function

TIME SUN MON TUE WED THU FRI SAT
TIMER
AFTER

ERROR CODE

ûF ûC

ONLY1Hr.

ON/OFF

CLOCK

<How to operate>

ON
OFFHrAFTER

ûF ûC

FUNCTION

FILTER

WEEKLY

SIMPLE

AUTO OFF

ON/OFF

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

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

pressed one time. Cooling 67 to 87°F

FILTER

CHECK

TEST

OPERATION

CLEAR

Control details

1-1. Thermo stat function (Function to prevent restarting for 3 minutes)

• Room temperature desired temperature + 2°F

• Room temperature desired temperature

···Thermo ON

···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 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.
Liquid pipe temp. (TH22) turns 50°F or above.
The condition of the thermo OFF has become complete
by thermo stat, etc.
The operation modes became mode other than COOL.
The operation stopped.

Remarks

2. Fan

By the remote controller setting (switch of 4 speeds)

Type

4 speeds type

3. Vane
(up/down vane change)

(1) Initial setting: Start at COOL mode and horizontal vane.
(2) Vane position:

Horizontal →Downward A →Downward B →Downward C

→

(3) Restriction of the downward vane setting

When setting the downward vane A, B or C in [Mid] or [Low] of the fan speed

notch, the vane changes to horizontal position after 1 hour have passed.

Fan speed notch

[Low], [Mid2], [Mid1], [High]

· "ONLY 1 Hr"
appears on the
wired remote
controller.

10

7-2. DRY OPERATION

OCH461B

TEMP.

MENU

BACK DAY

MONITOR/SET

PAR-21MAA

Control modes

1. Thermo stat
function

TIME SUN MON TUE WED THU FRI SAT
TIMER
AFTER

ERROR CODE

ûF ûC

ONLY1Hr.

ON/OFF

CLOCK

<How to operate>

ON
OFFHrAFTER

FUNCTION

ûF ûC

FILTER

WEEKLY

SIMPLE

AUTO OFF

ON/OFF

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

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

pressed one time. Dry 67 to 87°F

FILTER

CHECK

TEST

OPERATION

CLEAR

Control details

1-1. Thermo stat function (Function to prevent restarting for 3 minutes)
Setting the Dry thermo by the thermo stat signal and the room
temperature (TH21).
Dry thermo ON Room temperature desired temperature + 2°F
Dry thermo OFF Room temperature desired temperature

Room
temperature

Over 64°F

3 min. passed since starting operation

Thermo stat signal

Room temperature (T1)

T1 83°F

ON

83°F > T1 79°F
79°F > T1 75°F
75°F > T1

Dry thermo

ON

time (min)

93
7
5

33

Remarks

Dry thermo

OFF

time (min)

3
3

2. Fan

3. Vane
(up/down vane change)

Less than 64°F

OFF

Unconditional

Dry thermo OFF

3

1-2. Freeze prevention control
No control function

Indoor fan operation controlled depending on the compressor conditions.

Dry thermo

ON

OFF

Excluding the following

Room temp. < 64°F

Fan speed notch

[Low]

Stop

[Low]

Note: Remote controller setting is not acceptable.

Same control as COOL operation

10

1111