Mitsubishi Electric CITY MULTI PMFY-P06NBMU-E Operating manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
No. OC341
REVISED EDITION-F
INDOOR UNIT
CONTENTS
1. TECHNICAL CHANGES.......................2
2. FEATURES........................................... 3
3. PART NAMES AND FUNCTIONS........3
4. SPECIFICATION...................................5
5. OUTLINES AND DIMENSIONS............9
6. WIRING DIAGRAM.............................10
7.
REFRIGERANT SYSTEM DIAGRAM.... 14
8. MICROPROCESSOR CONTROL....... 15
9. TROUBLESHOOTING........................22
10. DISASSEMBLY PROCEDURE........... 31
11. RoHS PARTS LIST.............................35
April 2012
R410A / R22
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 compli-
ant products, refer to the
RoHS PARTS LIST.
Revision:
• PMFY-P06/08/12/15NBMU-
ER5 have been added in
REVISED EDITION-F.
• Some descriptions have
been modified.
• Please void OC341
REVISED EDITION-E.
Indoor unit
[Model names] [Service Ref.]
PMFY-P06NBMU-E
PMFY-P08NBMU-E
PMFY-P12NBMU-E
PMFY-P15NBMU-E
PMFY-P06NBMU-E PMFY-P06NBMU-E1
PMFY-P06NBMU-E#2 PMFY-P06NBMU-ER3
PMFY-P06NBMU-ER4 PMFY-P06NBMU-ER5
PMFY-P08NBMU-E PMFY-P08NBMU-E1
PMFY-P08NBMU-E#2 PMFY-P08NBMU-ER3
PMFY-P08NBMU-ER4 PMFY-P08NBMU-ER5
PMFY-P12NBMU-E PMFY-P12NBMU-E1
PMFY-P12NBMU-E#2 PMFY-P12NBMU-ER3
PMFY-P12NBMU-ER4 PMFY-P12NBMU-ER5
PMFY-P15NBMU-E PMFY-P15NBMU-E1
PMFY-P15NBMU-E#2 PMFY-P15NBMU-ER3
PMFY-P15NBMU-ER4 PMFY-P15NBMU-ER5

2
1TECHNICAL CHANGES
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.
PMFY-P06NBMU-E1→PMFY-P06NBMU-E#2
PMFY-P08NBMU-E1→PMFY-P08NBMU-E#2
PMFY-P12NBMU-E1→PMFY-P12NBMU-E#2
PMFY-P15NBMU-E1→PMFY-P15NBMU-E#2
1. CONTROLLER BOARD (I.B) has been changed.
2. PANEL has been changed.
PMP-16BMU →PMP-16BMUW
(White : 0.98Y 8.99/0.63) (Pure white : 6.4Y 8.9/0.4)
3. FAN MOTOR (MF) has been changed.
4. THERMISTORs (TH22, TH23) have been changed.
PMFY-P06NBMU-E#2 →PMFY-P06NBMU-ER3
PMFY-P08NBMU-E#2 →PMFY-P08NBMU-ER3
PMFY-P12NBMU-E#2 →PMFY-P12NBMU-ER3
PMFY-P15NBMU-E#2 →PMFY-P15NBMU-ER3
• CONTROLLER BOARD (I.B) has been changed. (It is possible to extract a signal for an external heater.)
PMFY-P06NBMU-ER3 →PMFY-P06NBMU-ER4
PMFY-P08NBMU-ER3 →PMFY-P08NBMU-ER4
PMFY-P12NBMU-ER3 →PMFY-P12NBMU-ER4
PMFY-P15NBMU-ER3 →PMFY-P15NBMU-ER4
1. DRAIN PIPE has been changed.
2. JOINT SOCKET (FOR DRAIN PIPE) has been added.
PMFY-P06NBMU-ER4 →PMFY-P06NBMU-ER5
PMFY-P08NBMU-ER4 →PMFY-P08NBMU-ER5
PMFY-P12NBMU-ER4 →PMFY-P12NBMU-ER5
PMFY-P15NBMU-ER4 →PMFY-P15NBMU-ER5
• INDOOR CONTROLLER BOARD (I.B) has been changed. (S/W version up)
Use the specified refrigerant only
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the spec labels provided with our products.
We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
OC341F

3
2FEATURES
PART NAMES AND FUNCTIONS
3
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 light-
est in the industry. The unit size is also quite small, having been standardized to a strikingly compact 33-5/8
inch. All of this make the chore of installation and maintenance that much simpler and easier.
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
Guide vane
Air flow can be changed to horizontal
by moving the guide vane to the left or right.
Air intake
Returns air from room.
Filters
Remove dust and pollutants
from return air.
Auto Air Swing Vane
Disperses airflow up and
down and adjusts the angle
of airflow direction.
Horizontal Air Outlet
Indoor Unit
Indoor Unit
OC341F

4
°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
Display Section
For the 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 prohib-
ited by a master controller.
“Timer is Off” indicator
Indicates that the timer is off.
Temperature Setting
Shows the target temperature.
Day-of-Week
Shows the current day of the week.
Time/Timer Display
Shows the current time, unless the simple or Auto Off
timer is set.
If the simple or Auto Off timer is set, the time to be
switched off is shown.
“Sensor” indication
Displays when the remote controller
sensor is used.
“Locked” indicator
Indicates that remote controller but-
tons 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 corre-
sponding timer is set.
Up/Down Air Direction indica-
tor
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.
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,
when the airflow direction also
changes.
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
cover
ON/OFF button
Fan Speed button
Filter button
(<Enter> button)
Test Run button
Check button (Clear button)
Airflow Up/Down button
Louver button
( Operation button)
To return operation
number
Ventilation button
( Operation button)
To go to next operation
number
Built-in temperature sensor
Wired remote controller
Once the controllers are set, the same operation mode can be repeated by simply pressing the ON/OFF button.
Note:
The phrase "Wired remote controller" in this manual refers only to the PAR-21MAA.
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.
OC341F

5
4SPECIFICATION
4-1. SPECIFICATIONS
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.
W3. Air flow and the noise level are indicated as Low - Medium2 - Medium1 - High.
Service ref.
Item
PMFY-P06NBMU-E
PMFY-P06NBMU-E1
PMFY-P06NBMU-E#2
PMFY-P06NBMU-ER3
PMFY-P06NBMU-ER4
PMFY-P06NBMU-ER5
PMFY-P08NBMU-E
PMFY-P08NBMU-E1
PMFY-P08NBMU-E#2
PMFY-P08NBMU-ER3
PMFY-P08NBMU-ER4
PMFY-P08NBMU-ER5
PMFY-P12NBMU-E
PMFY-P12NBMU-E1
PMFY-P12NBMU-E#2
PMFY-P12NBMU-ER3
PMFY-P12NBMU-ER4
PMFY-P12NBMU-ER5
PMFY-P15NBMU-E
PMFY-P15NBMU-E1
PMFY-P15NBMU-E#2
PMFY-P15NBMU-ER3
PMFY-P15NBMU-ER4
PMFY-P15NBMU-ER5
Power V · HZSingle phase 208-230V 60Hz
Cooling capacity Btu/h 6,000 8,000 12,000 15,000
Heating capacity Btu/h 6,700 9,000 13,500 17,000
Electric characteristic
Input
Cooling kW 0.042 0.042 0.044 0.054
Heating kW 0.042 0.042 0.044 0.054
Current
Cooling A 0.20 0.20 0.21 0.26
Heating A 0.20 0.20 0.21 0.26
Exterior
(munsell symbol)
—Unit : Galvanized sheets · Standard grilles : ABS resin acrylic coating
Munsell <0.98Y 8.99/0.63> (PMFY-P·NBMU-E(1)) / <6.4Y 8.9/0.4> (PMFY-P·NBMU-E#2/ER3/ER4/ER5)
Dimensions
Height
in. 9-1/16<1-3/16>
Width in. 31-15/16<39-3/8>
Depth in. 15-9/16<18-1/2>
Heat exchanger — Cross fin
Fan
Fan × No — Line flow fan × 1
Air flow W3 CFM 230-250-280-300 250-280-300-320 270-300-340-370
External
static pressure
in W.G. 0
Fan motor
output
kW 0.028
Insulator — Polyethylene sheet
Air filter — PP honey comb fabric
Pipe
dimensions
Gas
side [in. 1/2
Liquid
side [in. 1/4
Field drain pipe size
[in. 1 O.D. (PVC pipe VP-20 connectable)
Noise level W3 dB 27-30-33-35 32-34-36-37 33-35-37-39
Product weight Ib. 31<7>
OC341F

6
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 (PMFY-P·NBMU-E(1))
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-P06NBMU-E#2
PMFY-P06NBMU-ER3
PMFY-P06NBMU-ER4
PMFY-P06NBMU-ER5
PMFY-P08NBMU-E
PMFY-P08NBMU-E1
PMFY-P08NBMU-E#2
PMFY-P08NBMU-ER3
PMFY-P08NBMU-ER4
PMFY-P08NBMU-ER5
PMFY-P12NBMU-E
PMFY-P12NBMU-E1
PMFY-P12NBMU-E#2
PMFY-P12NBMU-ER3
PMFY-P12NBMU-ER4
PMFY-P12NBMU-ER5
PMFY-P15NBMU-E
PMFY-P15NBMU-E1
PMFY-P15NBMU-E#2
PMFY-P15NBMU-ER3
PMFY-P15NBMU-ER4
PMFY-P15NBMU-ER5
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
+Note : Refer to WIRING DIAGRAM for the supplied voltage.
+
+
+
250V 6.3A (PMFY-P·NBMU-E#2/ER3/ER4/ER5)
OC341F

7
4-3. AIR CAPACITY TAKEN FROM OUTSIDE
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).
(Knockout)
4-Ø1/8
Fresh air intake hole (Knockout)
Fresh air intake hole
90
Ø4-13/16
Ø3-15/16
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.
5Green
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
BA
C



Curve in the
right graphs
Duct characteristics
at site
Q
A
EC
Q
Qa
AD
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
0.2
Static pressure (in.W.G.)
0.1
0
-0.1
-0.2
-0.3
-0.4 010
Air flow (CFM)
20
Characteristic diagram of air capacity taken from outside of PMFY-P·NBMU-E
30 40 50 60 70 80
2 intake
1 intake
Q…Designed amount of fresh air
intake <CFM>
A…Static pressure loss of fresh air
intake duct system with air flow
amount Q <in. W.G>
B…Forced static pressure at air condi-
tioner inlet with air flow amount Q
<in. W.G>
C…Static pressure of booster fan with
air flow amount Q <in. W.G>
D…Static pressure loss increase
amount of fresh air intake duct
system for air flow amount Q
<in. W.G>
E…Static pressure of indoor unit with
air flow amount Q <in. W.G>
Qa…Estimated amount of fresh air
intake without D <CFM>
Service Ref. Air flow (Hi) Air capacity taken from outside
PMFY-P06NBMU-E/E1/E#2/ER3/ER4/ER5 300 CFM 60CFM
PMFY-P08NBMU-E/E1/E#2/ER3/ER4/ER5 320 CFM 64CFM
PMFY-P12NBMU-E/E1/E#2/ER3/ER4/ER5 320CFM 64CFM
PMFY-P15NBMU-E/E1/E#2/ER3/ER4/ER5 370CFM 74CFM
OC341F

8
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-E1
PMFY-P06NBMU-E#2
PMFY-P06NBMU-ER3
PMFY-P06NBMU-ER4
PMFY-P06NBMU-ER5
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
High
NOTCH
Medium1
Medium2
Low
37
SPL(dB)
36
34
32
LINE
PMFY-P08/12NBMU-E
PMFY-P08/12NBMU-E1
PMFY-P08/12NBMU-E#2
PMFY-P08/12NBMU-ER3
PMFY-P08/12NBMU-ER4
PMFY-P08/12NBMU-ER5
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-E1
PMFY-P15NBMU-E#2
PMFY-P15NBMU-ER3
PMFY-P15NBMU-ER4
PMFY-P15NBMU-ER5
High
NOTCH
Medium1
Medium2
Low
39
SPL(dB)
37
35
33
LINE
UNIT
5ft
MICROPHONE
CEILING
OC341F

9
5OUTLINES AND DIMENSIONS
90°
:
4-13/16(
:
122)
:
3-15/16(
:
100)
Drain pan panel
Ceiling
Ceiling panel
OD
:
1/4(
:
6.35)
pipe(liquid) Refrigirant
1/2F(:12.7)
OD
:
1/2(
:
12.7)
Refrigirant pipe(gas)
Drainage piping PVC pipe:VP-20[OD:31/32(:25)
1/4F(:6.35) OD:1-11/16(:43)
Gas pipe Liquid pipe pipe cover
piping Refrigerant
Drain pan
Elect box
ޓޓޓ[OD
:
31/32(
:
25)]
PVC pipe: VP-20 Drainage pipe
Left side
Right side
Top
Lower view
Details of fresh air intake hole
Front
Air outlet(lower)
Same line
Terminal block for transmission Flesh air intake hole
Knockout
4-:1/8(:2.8) Burring hole
Terminal block for power supply
around indoor unit
Installation space required
Outer line of grille
Center of unit
Suspension bolt(M10 or W3/8)
Panel(grille):PMP-16BMU(W) Panel(grille):PMP-16BMU(W) Mounting plate
remote-controller Terminal block for
(110)
(288.5)
(250)
(200) (200)
Suspension bolt pitch
Suspension bolt pitch
Ceiling opening
Ceiling opening
Outer side of grille
Outer side of grille
Outer side of grille
outer side of grille
(230)
(198)
or more
18-1/2(470)
39-3/8(1000)
2-15/18(74.5)
13/16(20)
13/16(20)
8-1/2(470)
16-15/16(430)
1-25/32(45)
13-3/8(340)
1-25/32(45)
11/16(17.5) 11/16(17.5)
39-3/8(1000)
13/16(20)13/16(20)
37-13/16(960)
2-15/18(74.5)
31-15/18(811)
1-1/32(26)
29-7/8(759)
9-1/2(235)
9-1/16(230)
4-5/16(110)
4-5/16
1-3/16(30)
9-3/8(247)
2-11/16(69)
2-1/16(53)
13/16(20)
1-1/32(26)
13/16(20)
1-1/8(28) 1-1/8(28)
1-11/16(43)
1-13/18(46)
7-7/8
23-5/8(600)
7-7/8
1-9/16(40)
2-3/8(60)
11-3/8
9-13/16
4-4/16(108)
29-7/8(759)
31-15/16(812)
:
1-31/32(
:
50)
(2-3/16(56))
3-3/8(96)
6-15/16(176)
15-9/16(395)
11-7/8(302)
10(254)
5-9/16(140)
9-1/16
13/16(20)
(13/32(10))
7-13/16
(3-3/8(96))
PMFY-P06NBMU-E/E1/E#2/ER3/ER4/ER5
PMFY-P08NBMU-E/E1/E#2/ER3/ER4/ER5
PMFY-P12NBMU-E/E1/E#2/ER3/ER4/ER5
PMFY-P15NBMU-E/E1/E#2/ER3/ER4/ER5
Unit : inch (mm)
OC341F

10
6WIRING DIAGRAM
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 fig. +1. 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 1s digit Address setting 10ths digit
SW14 Branch 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 TH23Fan 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 pump
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. +1>
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
1 2 3 4 5
56
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
2 3 1CN3A
(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 8
7 6 5 4 3
4 3
3
2 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. +1
8 7 6 5 4 3 2 1
4321
8
4
0
SW14SWC


BRANCH
No.
0
SW11
1s
DIGIT
0
SW12
10ths
DIGIT
12345678910
SW1
SW5 230V208V
(RED)
ADDRESS
CN82
(RED)
ADDRESS
CN43
A.B
I.B
GR
<+2>
(+2) Use copper supply wire.
PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E
OC341F

11
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 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 fig. +1. 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 1s digit Address setting 10ths digit
SW14 Branch 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/15k
,
77˚F/5.4k
)
LEV Linear expansion valve
TH22 TH23Fan motor
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 pump
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. +1>
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
6 1 3
MS
3~
MF FAN
(WHT)
LED2
LED1
2 1(BLU)
(M-NET)
CN2M
BLU BLU
TB5
TB2
PULL BOX
FUSE
(15A)
BREAKER
(15A)
(SHIELD)
TO OUTDOOR UNIT BC CONTROLLER REMOTE CONTROLLER DC24-30V
CN3A
(BLU)
ORN ORN
TB15
TO MA-REMOTE CONTROLLER DC8.7-13V
POWER SUPPLY ~ / N 208-230V 60Hz
TO NEXT INDOOR UNIT
(BLK)
GAS
CN29
(WHT)
LIQUID
CN21
DS TH23 TH22
(RED)
INTAKE
CN20
(WHT)LEV
CN60
(GRN)
REMOTE
INDICATION
CN52
15
(GRN)VANE
CN6V
6161
15
2121212131
TH21
(WHT)
DRAIN
CN31
LEV
MM
MV
CN25 21
CN27 8
4 1 1
12345678910
SW3
123456
SW2
12345
SW4
ON
OFF
ON
OFF
ON
OFF
(RED)
ADDRESS
CN81
(RED)
ADDRESS
CN42
(WHT)
REMOTE
SWITCH
CN32
M
1~
DP
X1
(WHT)
CNP
CND
(RED)
FUSE
T
BRN
RED
ORN
YLW
GRN
BLU
BRN
ORN
YLW
RED
WHT
(WHT)
CENTRALLY
CONTROL
CN51
15
RED BLU GRN / YLW See fig. +1
81
41
8
4
SW14SWC


BRANCH
No.
SW11
1s
DIGIT
SW12
10ths
DIGIT
12345678910
SW1
SW5 230V208V
(RED) ADDRESS
CN82
(RED)
ADDRESS
CN43
A.B
I.B
<+2>
<+2>Use Copper Supply Wire.
t° t° t° t°
3 1
3 1
31
31
1 2
L1 L2
GR
U
M1 M2
S
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
PMFY-P06NBMU-E1PMFY-P08NBMU-E1PMFY-P12NBMU-E1PMFY-P15NBMU-E1
OC341F

12

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 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 fig. 1. 7. Please set the switch SW5 according to the power supply voltage.
CN51 CN52 SW2 SW3 SW4 SWE A.B Address board
SW1 SW5 SW11 SW12
Mode selection Voltage selection Address setting 1s digit Address setting 10ths digit
SW14 Branch No.
Centrally control Remote Indication
Switch
Switch
Capacity code Mode selection Model selection
DRAIN UP MACHINE(TEST MODE)
ZNR Varistor
X1 Aux.relay Drain pump
FUSE Fuse
(
T6.3AL 250V
)
LED1 Power supply
(
I.B
)
LED2 Power supply
(
I.B
)
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/15k, 77°F/5.4k
)
LEV Linear expansion valve
TH22 TH23
Fan motor Vane motor
TB15 MA-Remote Controller
[Legend]
Symbol Name
I.B Indoor controller board
CN25 CN27 CN32
Connector Humidifier
Damper Remote switch
Symbol Name
DS DP Drain sensor
Drain pump
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. 1>
Mark Meaning Function
Power supply for MA-Remote controller
Main power supply (Indoor unit:208-230V) Power on Iamp is lit
LED on indoor board for service
LED1
Main power supply
Power supply for MA-Remote controller on Iamp is lit
LED2
<2> Use Copper Supply Wire.
SWE
ON OFF
GR
CN2M
(
BLU
)
M-NET
CN3A (
BLU
)
REMOCON
TB5
(SHIELD)
M1 M2 TB2
TB15
1S
TH23
TH22
CN20
(
RED
)
INTAKE
CN60
(
WHT
)
LEV
CN52
(
GRN
)
REMOTE
INDICATION
CN6V1
(
GRN
)
VANE
TH21
CNMF2
(
WHT
)
CNMF1
(
WHT
)
CN31
(
WHT
)
DRAIN
CN44
(
WHT
)
LIQUID/GAS
CN25
(
WHT
)
CN27
(
RED
)
ADDRESS
CN81 (
RED
)
CN42 (
RED
)
ADDRESS
CN32 (
WHT
)
REMOTE SWITCH
X1
CNP
(
YLW
)
D.U.M
CND (
BLK
)
FUSE
DSA ZNR01 DC311
~339V
ZNR02U
CN51 (
WHT
)
CENTRALLY
CONTROL
CN41
(
WHT
)
HA
48
5
5
LEV
M
DS
DP
t° t° t° t°
2L1 L2
12345678910
SW3
123456
SW2
12345
SW4 81
51
513
6
1
6 1
5 1
4 1
2 1 2 1 2 1
4 1
1
3
3 1
3
1
31
2
1
21
1
4
1357
8642
I.B
M
1~
M
U
MS
3~
PULL BOX FUSE
(15A
)
BREAKER
(15A
)
POWER SUPPLY ~ / N 208-230V 60Hz
TO NEXT INDOOR UNIT
BLU BRN ORN YLW RED WHT
SW14
SWC
BRANCH
No.
SW11
1s
DIGIT
SW12
10ths
DIGIT
12345678910
SW1 SW5 230V208V
(
RED)
ADDRESS
CN82
(
RED)
ADDRESS
CN43
A.B
8 1
4 1
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
TO MA-
REMOTE
CONTROLLER DC8.7-13V
TO OUTDOOR UNIT BC CONTROLLER REMOTE CONTROLLER DC24-30V
RED
BLU
GRN / YLW
MF
MV
ORN
*See fig. 1
ORN
BLU BLU
BLU BLU
LED2
LED1
GRN
YLW
ORN
RED BRN
BLK

PMFY-P06NBMU-E#2 PMFY-P08NBMU-E#2 PMFY-P12NBMU-E#2 PMFY-P15NBMU-E#2
PMFY-P06NBMU-ER3 PMFY-P08NBMU-ER3 PMFY-P12NBMU-ER3 PMFY-P15NBMU-ER3
PMFY-P06NBMU-ER4 PMFY-P08NBMU-ER4 PMFY-P12NBMU-ER4 PMFY-P15NBMU-ER4
OC341F

13
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 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 : 1.
7.Please set the switch SW5 according to the power supply voltage.
CN51 CN52 SW2 SW3 SW4 SWE A.B Address board
SW1 SW5 SW11 SW12
Mode selection Voltage selection Address setting 1s digit Address setting 10ths digit
SW14 Branch No.
Centrally control Remote Indication
Switch
Switch
Capacity code Mode selection Model selection
DRAIN UP MACHINE(TEST MODE)
X1 Aux.relay Drain pump
FUSE Fuse (T6.3AL 250V)
LED1 Power supply (I.B) LED2 Power supply (I.B)
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/15k, 77°F/5.4k)
LEV Linear expansion valve
TH22 TH23
Fan motor Vane motor
TB15 MA-Remote Controller
[Legend]
Symbol Name
I.B Indoor controller board
CN25 CN27 CN32
Connector Humidifier
Damper Remote switch
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 : 1>
Mark Meaning Function
Power supply for MA-Remote controller
Main power supply (Indoor unit:208-230V) Power on Iamp is lit
LED on indoor board for service
LED1
Main power supply
Power supply for MA-Remote controller on Iamp is lit
LED2
<2> Use Copper Supply Wire.
The black square ( ) indicates a switch position.
SWE
ON OFF
ON
OFF
GR
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
CN2M
(BLU)
M-NET
CNP
(
YLW)
DUM
CN3A
(BLU) MA REMOCON
TB5
(SHIELD)
M1 M2 TB2
TB15
1S
TH23
TH22
CN20
(RED)
INTAKE
CN60
(WHT)
LEV
CN52
(GRN)
REMOTE
INDICATION
CN6V1
(GRN)
VANE
TH21
CNMF2
(WHT)
CNMF1
(WHT)
CN31
(WHT)
DRAIN
CN44
(WHT)
LIQUID
/
GAS
CN25
(WHT)
CN27
(RED)
ADDRESS
CN81
(RED)
CN42 (RED) ADDRESS
CN32
(WHT)
REMOTE SWITCH
X1
CND
(BLK)
FUSE
CN51
(WHT)
CENTRALLY
CONTROL
CN41
(WHT)
HA
48
5
5
LEV
M
DS
DP
t° t° t° t°
2L1 L2
12345678910
SW3
123456
SW2
12345
SW4 81
51
513
6
1
6 1
5 1
4 1
2 1 2 1 2 1
4 1
1
3
3 1
3
1
31
2
1
21
1
4
1357
864 2
I.B
M
1~
M
MS
3~
PULL BOX FUSE
(15A) BREAKER
(15A)
POWER SUPPLY ~
/ N
208-230V 60Hz
TO NEXT INDOOR UNIT
BLU BRN ORN YLW RED WHT
SWC
 
12345678910
SW1
SW5 230V208V
(RED)
ADDRESS
CN82
(RED)
ADDRESS
CN43
A.B
8 1
4 1
TO MA-
REMOTE
CONTROLLER DC8.7-13V
TO OUTDOOR UNIT BC CONTROLLER REMOTE CONTROLLER DC24-30V
RED
BLU
GRN / YLW
MF
MV
ORN
*See fig : 1
ORN
BLU BLU
BLU BLU
LED2
LED1
GRN
YLW
ORN
RED BRN
BLK
PMFY-P06NBMU-ER5 PMFY-P08NBMU-ER5 PMFY-P12NBMU-ER5 PMFY-P15NBMU-ER5
OC341F

14
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
+1+2
Gas pipe
Liquid pipe
Flare connection
PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E
PMFY-P06NBMU-E1PMFY-P08NBMU-E1PMFY-P12NBMU-E1PMFY-P15NBMU-E1
PMFY-P06NBMU-E#2 PMFY-P08NBMU-E#2 PMFY-P12NBMU-E#2 PMFY-P15NBMU-E#2
PMFY-P06NBMU-ER3 PMFY-P08NBMU-ER3 PMFY-P12NBMU-ER3 PMFY-P15NBMU-ER3
PMFY-P06NBMU-ER4 PMFY-P08NBMU-ER4 PMFY-P12NBMU-ER4 PMFY-P15NBMU-ER4
PMFY-P06NBMU-ER5 PMFY-P08NBMU-ER5 PMFY-P12NBMU-ER5 PMFY-P15NBMU-ER5
Service Ref.
Item
PMFY-P06/P08/P12/P15NBMU-E
PMFY-P06/P08/P12/P15NBMU-E1
PMFY-P06/P08/P12/P15NBMU-E#2
PMFY-P06/P08/P12/P15NBMU-ER3
PMFY-P06/P08/P12/P15NBMU-ER4
PMFY-P06/P08/P12/P15NBMU-ER5
Gas pipe [1/2"(12.7)
Liquid pipe [1/4"(6.35)
Unit: in.(mm)
Service Ref.
Item
PMFY-P06/P08NBMU-E
PMFY-P06/P08NBMU-E1
PMFY-P06/P08NBMU-E#2
PMFY-P06/P08NBMU-ER3
PMFY-P06/P08NBMU-ER4
PMFY-P06/P08NBMU-ER5
PMFY-P12/P15NBMU-E
PMFY-P12/P15NBMU-E1
PMFY-P12/P15NBMU-E#2
PMFY-P12/P15NBMU-ER3
PMFY-P06/P08NBMU-ER4
PMFY-P06/P08NBMU-ER5
Capillary tube W1 O.D.[4.6 × I.D.Ø3.4 ×R200 O.D.[3.6 × I.D.Ø2.4 ×R200
Capillary tube W2 O.D.[3.6 × I.D.Ø2.4 ×R80
Unit: mm
OC341F

15
8 MICROPROCESSOR CONTROL
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
ûF ûC
ûF ûC
ERROR CODE
AFTER
TIMER
TIME SUN MON TUE WED THU FRI SAT
ON
OFF
Hr
AFTER
FILTER
FUNCTION
ONLY1Hr.
WEEKLY
SIMPLE
AUTO OFF
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.
Control modes Control details
1-1. Thermostat function
• 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.
 Liquid pipe temp. (TH22) turns to be 50˚F or above.
 The condition of the thermostat OFF becomes
complete by thermostat, etc.
 The operation mode becomes a mode other than COOL.
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. Thermostat function
Remarks
Type Fan speed notch
[Low], [Medium2], [Medium1], [High]
4 speeds
OC341F

16

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 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 (T1)
[ 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
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
OC341F

17
Control modes 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
1-2. Frozen prevention control
No control function
Indoor fan operation control depends on the compressor conditions.
3. Drain pump
1. Thermostat function
Remarks
Room
temperature 3 min. passed since starting operation
Dry mode
Room temperature (Ta)
Dry mode
ON
time (min)
Dry mode
OFF
time (min)
Less than 64˚F
Over 64˚FON
OFF
Ta 83˚F
83˚F > Ta 79˚F
79˚F > Ta 75˚F
75˚F > Ta
Unconditional
93
73
53
33
10
3
Dry mode OFF
2. Fan
Note: Remote controller setting is not acceptable.
Dry mode Fan speed notch
ON
OFF
[Low]
Stop
4. Vane
(up/down vane change)
Same control as COOL operation
Same control as COOL operation
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
ûF ûC
ûF ûC
ERROR CODE
AFTER
TIMER
TIME SUN MON TUE WED THU FRI SAT
ON
OFF
Hr
AFTER
FILTER
FUNCTION
ONLY1Hr.
WEEKLY
SIMPLE
AUTO OFF
8-2. DRY 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 2°F when the or button is
pressed once. Dry 67 to 87°F.
OC341F

18
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:
ON for 3 minutes after the operation mode is switched from COOL or DRY to
another operation mode (FAN).
ON for 6 minutes after the drain sensor is determined to be submerged
using the liquid level detection method given below.
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 or 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:
Drain pump is ON.
Indoor piping (liquid piping) temperature – indoor room temperature -18˚F
Indoor piping (liquid piping) temperature or indoor room temperature is at
the short or open level temperature.
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
ûF ûC
ûF ûC
ERROR CODE
AFTER
TIMER
TIME SUN MON TUE WED THU FRI SAT
ON
OFF
Hr
AFTER
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.
OC341F

19
Control modes 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
1. Thermostat
function
Remarks
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 thermostat)
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.
When starting the HEAT operation
When the thermostat function changes from OFF to ON.
When releasing the HEAT defrosting operation
2. Fan
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)
ACB
[Extra Low]
[Low]
Set fan speed by the remote controller
Hot adjust mode +1
2-2. Preheating 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.
+1
"STAND BY"
will be displayed
during the stand
by (hot adjust)
mode.
To be continued to the next page
+1
This control is
same for the
model without
auxiliary heater.
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
ûF ûC
ûF ûC
ERROR CODE
AFTER
TIMER
TIME SUN MON TUE WED THU FRI SAT
ON
OFF
Hr
AFTER
FILTER
FUNCTION
ONLY1Hr.
WEEKLY
SIMPLE
AUTO OFF
8-4. HEAT OPERATION
<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.
OC341F

20

Control modes Control details
2. Fan
Remarks
2-3. Thermo OFF mode
When the thermostat 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
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
OC341F