Mitsubishi Electric City Multi Series Operating manual

TECHNICAL & SERVICE MANUAL
CONTENTS
TECHNICAL CHANGES.............................2
1. SAFETY PRECAUTION..........................2
2. PARTS NAMES AND FUNCTIONS........3
3. SPECIFICATION...................................10
4. OUTLINES AND DIMENSIONS............13
5. WIRING DIAGRAM...............................14
6. REFRIGERANT SYSTEM DIAGRAM........15
7. MICROPROCESSOR CONTROL.........16
8. TROUBLESHOOTING..........................22
9. DISASSEMBLY PROCEDURE.............29
Indoor unit
[Model Name] [Service Ref.]
PKFY-P06NBMU-E2
PKFY-P06NBMU-E2R1
R410A
Revision:
Added
PKFY-P06NBMU-E2R1 in
REVISED EDITION-B.
Some descriptions have
been modified.
PARTS CATALOG (OCB516)
INDOOR UNIT
Model name
indication
PKFY-P06NBMU-E2
Notes:
This manual describes only
service data of the indoor
units.
RoHS compliant products
have <G> mark on the
spec name plate.
OCH516 REVISED EDITION-A
is void.
July 2016
No. OCH516
REVISED EDITION-B
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

2
PKFY-P06NBMU-E2 PKFY-P06NBMU-E2R1
HEAT EXCHANGER and LEV have been changed.
TECHNICAL CHANGES
CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R410A
Charge refrigerant from liquid phase of gas
cylinder.
If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.
Do not use refrigerant other than R410A.
If other refrigerant (R22, etc.) is used, chlorine in refrige-
rant can cause deterioration of refrigerant oil, etc.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil, etc.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera-
nt will change and the efficiency will be lowered.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enters, that can cause deterio-
ration of refrigerant oil, etc.
Do not use the existing refrigerant piping.
The old refrigerant and lubricant in the existing piping
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.
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the
unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the
spec labels provided with our products.
We will not be held responsible for mechanical failure,
system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
Use the specified refrigerant only.
SAFETY PRECAUTION
1
OCH516B

3
2-1. Indoor unit
Filter
Grille
Louver
Air outlet
Air intake
Vane
2PARTS NAMES AND FUNCTIONS
2-2. Wired Remote Controller <PAR-32MAA> <PAC-YT53CRAU>
: Supported : Unsupported
Function PAR-32MAA PAC-YT53CRAU
Slim City multi
Body Product size H × W × D (mm) 120 × 120 × 19 120 × 70 × 14.5
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
The functions which can be used are restricted according to each model.
*Some functions may not be available depending on model types.
OCH516B

4
2-2-1. Wired Remote Controller <PAR-32MAA>
F2 F3 F4F1
Function buttons
F1 F2 F3 F4
Press to turn ON/OFF the indoor unit.
ON/OFF button
When the backlight is off, pressing any button turns
the backlight on and does not perform its function.
(except for the (ON/OFF) button)
The functions of the function buttons change depending on
the screen. Refer to the button function guide that appears
at the bottom of the LCD for the functions they serve on a
given screen.
When the system is centrally controlled, the button function
guide that corresponds to the locked button will not appear.
Press to save the setting.
SELECT button
Press to return to the previous screen.
RETURN button
Press to bring up the Main menu.
MENU button
Operation settings will appear.
When the backlight is off, pressing any button turns the
backlight on and it will stay lit for a certain period of time
depending on the screen.
Backlit LCD
This lamp lights up in green while the unit is in operation.
It blinks while the remote controller is starting up or when
there is an error.
ON/OFF lamp
Main display : Press to change the operation mode.
Main menu : Press to move the cursor down.
Function button F1
Main display : Press to decrease temperature.
Main menu : Press to move the cursor up.
Function button F2
Main display : Press to increase temperature.
Main menu : Press to go to the previous page.
Function button F3
Main display : Press to change the fan speed.
Main menu : Press to go to the next page.
Function button F4
83
83
Fri
Room
Set temp.
Mode Temp. Fan
Cool Auto
Main
Main display:
Cursor Page
Main menu
Vane·Louver·Vent. (Lossnay)
High power
Timer
Weekly timer
OU silent mode
<Main display> <Main menu>
Function guide
OCH516B

5
The main display can be displayed in 2 different modes: "Full" and "Basic".
T
he initial setting is "Full". To switch to the "Basic" mode, change the setting on the Main display setting.
<Full mode> <Basic mode>
All icons are displayed for explanation.
Most settings (except ON/OFF, mode, fan speed, temperature) can be made from the Menu screen.
Indoor unit operation mode appears here.
1Operation mode
Preset temperature appears here.
2Preset temperature
Current time appears here.
3Clock (See the Installation Manual.)
4Fan speed
Fan speed setting appears here.
Functions of the corresponding buttons appear here.
5Button function guide
Appears when the ON/OFF operation is centrally controlled.
Appears when the operation mode is centrally controlled.
Appears when the preset temperature is centrally controlled.
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Current room temperature appears here.
1Room temperature
(See the Installation Manual.)
Appears when the buttons are locked.
Appears when the On/Off timer or Night setback function is
enabled.
Appears when the Weekly timer is enabled.
Appears while the units are operated in the energy-save
mode.
Appears when the built-in thermistor on the remote control-
ler is activated to monitor the room temperature.
appears when the thermistor on the indoor unit is acti-
vated to monitor the room temperature.
Appears when the units are operated in the energy-save
mode with 3D i-see Sensor.
Indicates the louver setting. (This function is not available on this unit.)
Indicates the ventilation setting.
Appears when the preset temperature range is restricted.
Indicates the vane setting.
Fri
Mode Temp. Fan
Room
Cool Set temp.
83
83
Fri
Cool
Mode Temp. Fan
Set temp.
83
1
1
5
5
2
2
4
4
33
9
7
6
8
0
1
!
2345
6
78
9
)
6
7
8
9
0
2
3
4
5
6
7
8
9
)
!
OCH516B

6
Not all functions are available on all models of indoor units.
Energy saving
Auto return
Schedule
Night setback
Main menu Press the MENU button.
Move the cursor to the desired item with the F1 and F2 buttons, and press the SELECT button.
Vane · Louver · Vent. (Lossnay)
High power
Weekly timer
Restriction
Maintenance
Initial setting
ON/OFF timer
Auto-Off timer
Temp. range
Operation lock
Manual vane angle
Main/Sub
Timer
Main display
Contrast
Display details
Auto mode
Administrator password
Language selection
Service
Input maintenance info.
Function setting
Lossnay (City Multi only)
Check
Self check
Maintenance password
Remote controller check
Test run
Clock
Filter Information
Error Information
3D i-see Sensor
OCH516B

7
Setting and display items Setting details
Vane · Louver · Vent.
(Lossnay) Use to set the vane angle. Select a desired vane setting from 5 different settings.
Use to turn ON/OFF the louver.
Select a desired setting from "ON" and "OFF."
Use to set the amount of ventilation.
Select a desired setting from "Off," "Low," and "High."
High power Use to reach the comfortable room temperature quickly.
Units can be operated in the High-power mode for up to 30 minutes.
Timer ON/OFF
timer* Use to set the operation ON/OFF times. Time can be set in 5-minute increments.
Auto-Off
timer Use to set the Auto-Off time. Time can be set to a value from 30 to 240 in 10-minute increments.
Weekly timer* Use to set the weekly operation ON/OFF times.
Up to 8 operation patterns can be set for each day.
(Not valid when the ON/OFF timer is enabled.)
Restriction Temp. range Use to restrict the preset temperature range.
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Operation
lock Use to lock selected functions. The locked functions cannot be operated.
Energy
saving Auto return Use to get the units to operate at the preset temperature after performing energy-save RSHUDWLRQIRUDVSHFL¿HGWLPHSHULRG
7ime 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.
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Night setback* Use to make Night setback settings.
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the start/stop times can be set.
Filter information 8VHWRFKHFNWKH¿OWHUVWDWXV
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Error information Use to check error information when an error occurs.
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information (dealer's phone number) can be displayed.
(The unit model, manufacturing number, and contact information need to be registered in
advance to be displayed.)
Maintenance Manual
vane angle 8VHWRVHWWKHYDQHDQJOHIRUHDFKYDQHWRD¿[HGSRVLWLRQ
3D i-see
Sensor Use to set the following functions for 3D i-see Sensor. $LUGLVWULEXWLRQ(QHUJ\VDYLQJRSWLRQ6HDVRQDODLUÀRZ
Initial setting Clock Use to set the current time.
Main display Use to switch between "Full" and "Basic" modes for the Main display.
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Contrast Use to adjust screen contrast.
Language
selection Use to select the desired language.
Main menu list
Continue to the next page
OCH516B

8
Setting and display items Setting details
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
LOSSNAY
setting 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.
Self check Error history of each unit can be checked via the remote controller.
Maintenance
password Use to change the maintenance password.
Remote
controller
check
When the remote controller does not work properly, use the remote controller checking
function to troubleshoot the problem.
OCH516B

9
2-2-2. Wired Remote Controller <PAC-YT53CRAU>
.
Backlit LCD
ON/OFF lamp
ON/OFF button
FAN button
VANE button
Note: To set the functions that are not available on this controller (PAC-YT53CRAU) such as Louver,
use the centralized controller.
The lamp will light up in green when
turned on, and blink during startup
and when an error occurs.
Pressing this button starts and
stops the operation.
TEMP. button
MODE button
Note:
The phrase "Wired remote controller" in this manual refers only to the PAC-YT53CRAU.
If you need any information for the other remote controller, please refer to either the installation manual or initial setting manual which are included in
remote controller's box.
GB
Display section
*2 icon
For City Multi, when an error occurs, power indicator will blink, and unit address (3 digits) and check code (4
digits) will blink.
Check the error status, stop the operation, and consult your dealer.
icon appears while the unit is operated in the
energy-save mode
Note: All icons are displayed for explanation purpose
icon appears when Operation lock setting is
effective.
icon appears when indoor unit functions are set up.
(Refer to the Installation Manual.)
Fan speed icon
Vane icon
icon appears when the power is on.
Indoor temperature
Operation modes
CENTRAL icon *1
CHECK icon *2
Preset temperature *3
*1 icon
Appears when one of the following local operations is prohibited: ON/OFF; operation mode; preset temperature;
fan speed; vane.
CENTRAL
*3 Preset temperature
* Centigrade or Fahrenheit is selectable. Refer to the Installation Manual for details.
In COOL, DRYING, HEAT, or
AUTO (single set point) modes In AUTO (dual set point) or SETBACK modes
Room Setto
AUTO COOL HEATFAN
DRYINGVENTI.SETBACK
Preset
temperature
Room Setto
AUTO COOLHEATFAN
DRYINGVENTI.SETBACK
Heatingpreset
temperature
Cooling preset
temperature
OCH516B

10
Unit converter
kcal/h = kW × 860
Btu/h = kW × 3,412
cfm = m
3
/min × 35.31
lb = kg/0.4536
Note: Above specification data
is subject to rounding
variation.
Service Ref.
Power source
Cooling capacity
(Nominal)
Heating capacity
(Nominal )
External finish
External dimension H × W × 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
Optional parts
Remarks
Power input
Current input
Power input
Current input
Type × Quantity
External
static press.
Motor type
Motor output
Driving mechanism
Airflow rate
(Low-Mid2-Mid1-High)
Liquid
Gas
Document
Accessory
External heater adapter
Installation
kW
BTU/h
kW
A
kW
BTU/h
kW
A
inch
mm
lb (kg)
Pa
mmH2O
kW
m3/min
L/s
cfm
dB <A>
inch (mm)
inch (mm)
inch (mm)
*1
*1
*2
*2
(R410A)
(R410A)
Installation Manual, Instruction Book
PAC-SA88HA-E
1-phase 208/230V 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-P06NBMU-E2
PKFY-P06NBMU-E2R1
Plastic, MUNSELL (1.0Y 9.2/0.2)
1.8
6,000
0.03
0.15
2.0
6,700
0.03
0.15
11-5/8" × 32-1/8" × 8-7/8"
295 × 815 × 225
22 (10)
Line flow fan × 1
0
0
0.008
I.D. 5/8" (16)
ø1/4"(ø6.35 ) Flare
ø1/4" (ø6.35) Flare
ø1/2" (ø12.7) Flare
ø1/2"(ø12.7 ) Flare
4.9 - 5.2 - 5.6 - 5.9
82 - 87 - 93 - 98
170 - 180 - 200 - 210
32 - 33 - 35 -36
*1 Nominal cooling conditions
Indoor :
Outdoor :
Pipe length :
Level difference :
80°FDB/67°FWB (26.7°CDB/19.4°CWB)
95°FDB (35°CDB)
25 ft. (7.6 m)
0 ft (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)
Note: Due to continuing improvement, above specification may be subject to change without notice.
MA remote controller cable
Details on foundation work, insulation work, electrical wiring, power source switch, and other items shall be referred to
the Installation Manual.
3SPECIFICATION
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OCH516B

1111
Parts name
Service Ref. Symbol
TH21
TH22
TH23
FUSE
MF
C1
MV
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
4-Pole Output 8W / PS4N8-KB
1.2+× 440V
MSFBC20 DC12V
(L1, L2, GR) 250V 20A
(M1, M2, S) 250V 20A
(1, 2) 250V 10A
Pipe temperature detection
thermistor/liquid
Pipe temperature detection
thermistor/gas
PKFY-P06NBMU-E2
PKFY-P06NBMU-E2R1
Room temperature
detection 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
DC12V Stepping motor drive
Port [3.2 (0~2000pulse)
MA remote controller
terminal block
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OCH516B

12
* Measured in anechoic room.
PKFY-P06NBMU-E2
PKFY-P06NBMU-E2R1
Sound level dB (A)
Sound level at anechoic room : Low-Middle2-Middle1-High
Service Ref.
32-33-35-36
3.3 ft. (1m)
Measurement location 3.3 ft.
(1m)
3-3. Sound levels
3-4. NC curve
PKFY-P06NBMU-E2
PKFY-P06NBMU-E2R1
External static pressure : 0Pa
Power source : 208,230V, 60Hz
OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20μPa
OCTAVE BAND CENTER FREQUENCIES(Hz)
Approximate minimum
audible limit on
continuous noise
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
63 125 250 500 1k 2k 4k 8k
NC60
NC50
NC40
NC30
NC20
High speed
Low speed
OCH516B

1313
OUTLINES AND DIMENSIONS
4
5°
3°
45°
R5/16(R8)
R15/32(R12)
R5/16(R8)
R19/32(R15)
R19/32(R15)
R19/32(R15)
R5/16(R8)
(Direction)
Air outlet
(Direction)
(Direction)
Air intake
Air intake
Air intake
Air intake
Liquid pipe
Gas pipe
Air intake
Air intake
Air intake
Air outlet
Air outlet
installation plate
Address board
Connection No.
on the occasion of setting.
ࠉRemove the screw with driver
With PL cover.
*3 Address board is protected
Mode selection
Address setting digit
Address board
Terminal block Detailed
Detailed
Address board
Power supply
Transmission
Power supply(208-230V)
Connection with MA-remote controller refers to Note.3
There is no MA-remote controller terminal block.
MA-remote controller DC8.7-13V)
Transmission(DC 24-30V)
M2M1
L1 GR L2
Terminal block
Emergency operation
Emergency operation
DEFROST/STAND BY lamp
Operation lamp
Receiver
(Knockout hole)
Detailed figure dwg (ABC)
right piping
Knockout hole of
remocon wiring
Knockout hole of
remocon wiring
Knockout hole for
under piping
Knockout hole for
left piping
Knockout hole for
2-7/8(74.6)
30-13/16(783)
17/32(14) 3-15/16(100.6)
20-25/32(520)
17-23/32(450)
25-3/16(640) Drain pipe effective length
4-9/16(116)
4-11/32(110)
8-55/64(225)
27-3/8(695)
25-3/16(640)
2-3/8(60)
11-39/64(295)
1/8(3)
4-3/16(106.7)
4-1/2(115)
32-3/32(815)
25-3/16(640)
1/4(7)
1-7/16(37.8)
13/32(10)
1-31/32(50)
5/8(16) 3/32(2.5)
1-25/32(45) 3-19/32(91.5)
2-1/8(54)
31/32(24.4)
1-25/32(45)
13/32(10)
13/32(10)
1-11/32(34)
5/8(16)
3/32(2.5) 1-31/32(50)
5/32(4)
piping
Refrigerant Gas pipe
Liquid pipe
Drain pipe
1/2F㸦[12.7㸧
1/4F㸦[6.35㸧
[2-9/16([16) I.D
Installation space
connect MA-remote controller cable (anaccssory) to the connector.
Note.3 In case of connecting MA-remote controller, please
Note.2 Extension piping side.
Note.1 Use M10 or W3/8 screw for installation plate.
left and left back piping.
60mm or more for
Min1-31/32(50)
Min3-35/64(90)
Min3-15/16(100)
Min25/32(20)
Min55/64(22)
3/16×1-3/8(4.5×35) 4 holes
8-[5/32([4.3) holes
Installation plate
Piping hole[2-9/16([65)
87-[3/16([5.1)holes
4-[11/32([9)holes
12-[1/8([2.8)holes
3/16×1-15/32(4.5×37) 4 holes
3/16×1-9/16(4.5×40) 4 holes
Installation plate balance point hole
Knock of hole
13/32(10)
13/32(10)
16-1/32(407.5)
11-23/32(298) 10-1/4(260) 8-27/32(225)
7-15/32(190)
6-3/32(155) 4-23/32(120) 3-11/32(85) 1-3/16(30)
16-1/32(407.5)
12-29/32(328) 11-5/8(295) 10-1/4(260) 8-27/32(225) 7-15/32(190)
6-3/32(155)
4-23/32(120) 3-11/32(85) 1-3/16(30)
5-1/4(133)
2-27/32(72.5)
3-11/32(85)
1-7/8(47.5)
2-3/8(60)
7/8(22.5)
0
4-13/16(122.5)
4-1/32(102.5)
19/32(15)
12-29/32(328)
6-5/8(168)
4-7/16(113)
3-7/16(87)
5-5/16(135)
4-11/32(110)
1-3/8(35)
13/32(10)
4-7/8(124)
3-17/32(90)
6-1/4(159)
2-9/16(65)
1-9/16(40)
5-1/32(128)
11-23/32(298)
9-1/4(235)
8-1/16(205)
6-7/8(175)
6-11/16(170)
0
1-3/4(45)
4-29/32(125)
2-3/32(53)
1-3/32(27.5)
0
7-3/32(180)
6-1/4(159)
0
3-27/32(97.5)
8-1/16(205)
6-11/16(170)
9-1/4(235)
6-7/8(175)
1-23/32(44)
1-31/32(50)
Details of installation plate
PKFY-P06NBMU-E2
PKFY-P06NBMU-E2R1 Unit : inch (mm)
OCH516B

14
WIRING DIAGRAM5
FUSE
250V
6A
MF
LEV TH21TH22TH23
6
4
4
8
5
111 121
1
2
2
96 5
LED2 LED1
TO OUTDOOR UNIT
BC CONTROLLER
M-NET REMOTE CONTROLLER
DC24-30V
TO MA-REMOTE
CONTROLLER
DC8.7-13V
TB5
SW1
SW5
12345678910
OFF
ON
SW3 SW2
OFF
ON
230V208V
( RED)
ADDRESS
CN43
( RED)
ADDRESS
CN82
CN42
ADDRESS
( RED) CN20
INTAKE
( RED)
CN81
ADDRESS
( RED)
CN53M
( RED)
CN3A
MA-
REMOCON
( BLU)
CN2M
M-NET
(BLU)
CN60
LEV
(WHT )
CN90
WIRLESS
(WHT )
CN5V
VANE
( BLU) CN29
GAS
(BLK )
CN21
LIQUID
(WHT )
FAN
(GRN)
CN53P
(RED)
CN35P
(BLU)
A.B
I.B P.B
BRN BLU
BLU BLU
BLU
BLK
RED
RED RED
YLW ORN
ORN ORN
WHT
WHT
PULL
BOX
FUSE
( 16A)
BREAKER
( 16A)
TB2
TO NEXT
INDOOR UNIT
POWER SUPPLY
~ /N 208-230V 60Hz
GRN/YLW
BLU
WHT
RED
YLW
ORN
123456789101234
9
9
C1
CN51
(WHT
)
CN52
(GRN
)
CND
(RED)
F.C
CN35M
( BLU)
<1>
BZ
W.B
SW1
LED1 LED2
SW2 CNB
15 1
1
1
8
514
CN41
(WHT )
CN32
(WHT )
14
12
11
1
5
5
5
3
11 3
12 13
13
3
1
3
8
1
5
M
M
1~
M
MV
t ° t °t°
RU
164
L1
L2
GR
M1 M2
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
10ths
DIGIT 1s DIGIT BRANCH No.
SW12 SW11 SW14
LEGEND
LED1
LED2
Main power supply
Power supply for
MA -Remote controller
Main power supply (Indoor unit:208-230V)
power on ĺlamp is lit
Power supply for MA -Remote controller
on ĺlamp is lit
Notes:
LED on indoor board for service
Meaning Function
C1
F.C
FUSE
INDOOR POWER BOARD
CAPACITOR (FAN MOTOR)
FAN PHASE CONTROL
FUSE (6A/250V)
P. B
WIRELESS REMOTE CONTROLLER BOARD
RECEVING UNIT
BUZZER
LED (OPERATION INDICATOR : GREEN)
LED (PREPARATION FOR HEATING : ORANGE)
EMERGENCY OPERATION (HEAT)
EMERGENCY OPERATION (COOL)
SYMBOL
SWITCH
CN32
CN51
CN52
SW2
SW3
REMOTE SWITCH
CENTRALLY CONTROL
REMOTE INDICATION
EXTERNAL HEATER
CAPACITY CODE
MODE SELECTION
CONNECTOR
I. B INDOOR CONTROLLER BOARD
NAME SYMBOL
MF
NAME SYMBOL NAME
Mark
VANE MOTOR
LINEAR EXPANSION VALVE
THERMISTOR
MV
LEV
TB2
TB5
TH21
TH22
TH23
POWER SUPPLY
TRANSMISSION
TERMINAL
BLOCK ROOM TEMP. DETECTION
(32°F/15k
ȍ , 77°F/5.4k ȍ )
PIPE TEMP. DETECTION/LIQUID
(32°F/15k ȍ , 77°F/5.4k ȍ )
PIPE TEMP. DETECTION/GAS
(32°F/15k
ȍ , 77°F/5.4k ȍ )
FAN MOTOR
A. B
SW1
SW5
SW11
SW12
SW14
SWITCH MODE SELECTION
VOLTAGE SELECTION
ADDRESS SETTING 1s DIGIT
ADDRESS SETTING 10ths DIGIT
BRANCH No.
ADDRESS BOARD
W. B
RU
BZ
LED1
LED2
SW1
SW2
<1> Use Copper Supply Wire.
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 of dip sw is the switch position.
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.
1 2
PKFY-P06NBMU-E2
PKFY-P06NBMU-E2R1
OCH516B

15
PKFY-P06NBMU-E2
PKFY-P06NBMU-E2R1
6REFRIGERANT SYSTEM DIAGRAM
Strainer
(#100mesh)
Strainer
(#100mesh)
Strainer
(#100mesh)
Heat exchanger
Room temperature detection thermistor
TH21
Pipe temperature detection thermistor/gas
TH23
Pipe temperature detection
thermistor/liquid
TH22
Gas pipe
Liquid pipe
Flare
Linear expansion
valve
Unit: inch (mm)
Service ref.
Item PKFY-P06NBMU-E2
PKFY-P06NBMU-E2R1
Gas pipe {1/2” (12.7)
Liquid pipe {1/4” (6.35)
OCH516B

16
7MICROPROCESSOR CONTROL
INDOOR UNIT CONTROL
7-1. COOL OPERATION
Control Mode Control Details Remarks
1. Temperature
adjustment
function
1-1. Determining temperature adjustment function
(Function to prevent restarting for 3 minutes)
5RRPWHPSHUDWXUH]Set temperature + 2°F ···Thermo-ON
5RRPWHPSHUDWXUH[Set temperature ···Thermo-OFF
7KH212))FRPPDQGV
by the indoor unit
thermostatic control
are not an ON/OFF
commands to the
compressor but an
open/close commands
to the linear expansion
valve. (The compressor
stops only when the
thermostatic control
for all the indoor units
connected to the same
outdoor unit turns OFF.)
1-2. Anti-freeze control
ŶCondition to detect
When the pipe temperature detection thermistor/liquid (TH22) detects 32°F or less in 16 minutes
from compressor startup, the anti-freeze control initiates, and the unit enters to the thermo-OFF.
ŶCondition to release
The timer which prevents reactivating is set for 3 minutes, and anti-freeze control is
FDQFHOOHGZKHQDQ\RQHRIWKHIROORZLQJFRQGLWLRQVKDVEHHQVDWLV¿HG
1Pipe temperature detection thermistor/liquid (TH22) reaches 50°F or above.
2The condition of thermo-OFF has been completed by the thermostat.
3The operation has changed to a mode other than COOL.
2. Fan By the remote controller setting (switch of 4 speeds)
Type Fan speed notch
4 speeds type
3. Vane
(up/down vane
change)
(1) The initial vane setting for COOL mode will be the horizontal position.
(2) Vane position:
+RUL]RQWDOĺ'RZQZDUG$ĺ'RZQZDUG%ĺ'RZQZDUG&
(3) Restriction of the downward vane setting
If the vane position is set to Downward A/B/C in [Mid1] or [Low], the vane will return to the
horizontal position after 1 hour has passed.
"ONLY 1 Hr" appears on
the wired remote controller.
<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 1°F when the or
button is pressed one time. Cooling 67 to 87°F
<How to operate>
1 Press button.
2 Press [F1] button to display COOL.
3 Press [F2] [F3] button to set the desired temperature.
NOTE: The settable temperature range varies with the model of
outdoor units and remote controller.
F2 F3 F4F1
.
OCH516B

1717
7-2. DRY OPERATION
Control Mode Control Details Remarks
1. Temperature
adjustment
function
1-1. Determining temperature adjustment function
(Function to prevent restarting for 3 minutes)
Setting the Dry thermo by the thermostat signal and the room temperature (TH21).
Dry thermo-ON Room temperature ]Set temperature + 2°F
Dry thermo-OFF Room temperature [Set temperature
Room temperature 3 minutes passed since
starting operation Dry thermo-
ON time
(min)
Dry thermo-
OFF time
(min)
Thermostat signal
Room temperature (T1)
Over 64°F ON
T1 ]83°F 9 3
83°F > T1 ]79°F 7 3
79°F > T1 ]75°F 5 3
75°F > T1 3 3
OFF Unconditional 3 10
Below 64°F Dry thermo OFF
1-2. Anti-freeze control
No control function
2. Fan Indoor fan operation controlled depends on the compressor conditions.
Dry thermo Fan speed notch
ON [Low]
OFF Excluding the following Stop
Room temp. < 64°F [Low]
Note: Fan speed change is not allowed during DRY operation.
3. Vane
(up/down vane
change)
Settings are the same in DRY operation as they are in COOL operation.
<How to operate>
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 1°F when the or
button is pressed one time. Dry 67 to 87°F
<How to operate>
1 Press button.
2 Press [F1] button to display DRY.
3 Press [F2] [F3] button to set the desired temperature.
F2 F3 F4F1
.
OCH516B

18
7-3. FAN OPERATION
Control Mode Control Details Remarks
1. Fan Set by remote controller.
Type Fan speed notch
4 speeds type
2. Vane
(up/down vane
change)
Same as the control performed during the COOL operation, but with no restriction on the vane's
downward blow setting
F2 F3 F4F1
.
<How to operate>
1 Press button.
2 Press [F1] button to display FAN.
<How to operate>
1 Press POWER ON/OFF button.
2 Press the operation MODE button to display FAN.
OCH516B

19
7-4. HEAT OPERATION
Control Mode Control Details Remarks
1. Temperature
adjustment
function
1-1. Determining temperature adjustment function (Function to prevent restarting for 3 minutes)
5RRPWHPSHUDWXUH[6HWWHPSHUDWXUHí)āāā7KHUPR21
5RRPWHPSHUDWXUH]Set temperature ···Thermo-OFF
2. Fan By the remote controller setting (switch of 4 speeds)
Type Fan speed notch
4 speeds type
Give priority to under-mentioned controlled mode:
2-1. Hot adjust mode
2-2. Preheating exclusion mode
2-3.
Thermo-OFF mode (When the compressor off by the temperature adjustment function)
2-4. Cool air prevention mode (Defrosting mode)
2-1. Hot adjust mode
The fan controller becomes the hot adjuster mode for the following conditions:
1When starting the HEAT operation
2When the temperature adjustment function changes from OFF to ON.
3When release the HEAT defrosting operation
ACB
[Extra Low]
[Low] Set fan speed by the remote controller
Hot adjust mode *1
A: Hot adjust mode starts.
B: 5 minutes have passed since the condition Aor the indoor liquid pipe temperature reached 95°F or more.
C: 2 minutes have passed since the condition B. (Terminating the hot adjust mode)
*1"STAND BY" will be
displayed during the hot
adjust mode.
Continue to the next page
<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 1°F when the or
button is pressed one time. Heating 63 to 83°F
<How to operate>
1 Press button.
2 Press [F1] button to display HEAT.
3 Press [F2] [F3] button to set the desired temperature.
NOTE: The settable temperature range varies with the model of
outdoor units and remote controller.
F2 F3 F4F1
.
OCH516B

20
Control Mode Control Details Remarks
2-2. Residual heat exclusion mode
When the condition changes the auxiliary heater ON to OFF (thermostat or operation
stop, etc), the indoor fan operates in [Low] mode for 1 minute.
 This control operates
the same for the model
without auxiliary heater.
2-3. Thermo-OFF mode
When the temperature adjustment function changes to OFF, the indoor fan operates in
[Extra low].
2-4. Heat defrosting mode
The indoor fan stops.
3. Vane control
(Up/down vane
change)
,QLWLDOVHWWLQJ2))ĺ+($7āāā>ODVWVHWWLQJ@
When changing the mode from exception of HEAT to HEAT operation
···[Downward C]
(2) Vane position:
+RUL]RQWDOĺ'RZQZDUG$ĺ'RZQZDUG%ĺ'RZQZDUG&
(3) Restriction of vane position
17KHYDQHLVKRUL]RQWDOO\¿[HGIRUWKHIROORZLQJPRGHV
(The control by the remote controller is temporally invalidated and control by the unit.)
7KHUPR2))
+RWDGMXVW>([WUDORZ@PRGH
+HDWGHIURVWPRGH
OCH516B