Mitsubishi Electric City Multi PCFY-P15NGMU-E Operating manual

TECHNICAL & SERVICE MANUAL
CONTENTS
1. FEATURES ··········································2
2. PART NAMES AND FUNCTIONS·······4
3. SPECIFICATIONS ·······························6
4. OUTLINES AND DIMENSIONS···········9
5. WIRING DIAGRAM····························13
6. REFRIGERANT SYSTEM DIAGRAM ··14
7. MICROPROCESSOR CONTROL······15
8. TROUBLE SHOOTING······················22
9. DISASSEMBLY PROCEDURE··········29
10. PARTS LIST······································33
11. RoHS PARTS LIST ··························40
12. OPTIONAL PARTS ··························47
PCFY-P15NGMU-E
PCFY-P24NGMU-E
PCFY-P30NGMU-E
PCFY-P36NGMU-E
INDOOR UNIT
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
August 2006
R410A R22
No. OC343
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 of RoHS
compliant products, refer to
the RoHS PARTS LIST.
Revision:
• RoHS PARTS LIST is added.
• Some descriptions have been
modified.
• Please void OC343.
[Models]
OC343A-1.qxp 06.8.2 11:31 AM Page 1

2
1FEATURES
Models Cooling capacity / Heating capacity
PCFY-P15NGMU-E 15,000 / 17,000 Btu/h
PCFY-P24NGMU-E 24,000 / 27,000 Btu/h
PCFY-P30NGMU-E 30,000 / 34,000 Btu/h
PCFY-P36NGMU-E 36,000 / 40,000 Btu/h
Indoor unit
1. EASY TO CLEAN ; FLOCKLESS VANE
With our original air current control mechanism, a flockless vane is
newly adapted.
The flockless vane prevents the condensation on the vane.
By changing the vane to the flockless type, the unit can be cleaned
much easier with mild household detergent.
2. NEW MATERIALS FOR BETTER OIL RESISTANCE
We have changed the materials of grill, filer, fan and fan casing from ABS to P.P. (polypropylene) for better oil
resistance. As a result, oil crazing is cut in half.
3. SIMPLIFIED INSTALLATION WORK (DIRECT SUSPENDING METHOD)
Simplified the installation work by changing the suspending method to the direct suspending method (suspending
the unit directly from the suspension fixture).
In this way, the unit can be attached to the suspension fixture without removing the installation parts off (Only the
side cover is removed). This method is much simpler than the “One-time installation method”.
Unifies the air speed
with the vane
Sending the air to the upper
area of the vane
Prevents the air comes from
cntering from outside the unit
Protruding portion B
Protruding portion A
Flockless vane
Air outlet
B
A
OC343A-1.qxp 06.8.2 11:31 AM Page 2

3
4. IMPROVING EFFICIENCY OF PIPING WORK
11Removed the knockout work by separating the piping
space from the air outlet for efficiency of the piping work.
wKnockout work is needed for the top part. When option-
al drain-up machine is installed, the refrigerant pipe
exits out from the top.
wPlease move the rubber plug for the unit to the right joint
when drainage pipe exits from the left side.
22Improved the flexibility by making it possible for
drainage pipe to exit not only from the right side
back but also from the left side back.
Back panel
U-cut
Side panel
L : Liquid pipe
G : Gas pipe
D : Drain pipe
LL
G
D
D
G
open open
Drain pan Rubber plug
Insulation cover
(attached)
Drain pipe
(purchased locally)
Band
(attached)
Insulation
cover
Joint coupler
(attached)
5. EASY MAINTENANCE FILTER ; NO MAINTENANCE NECESSARY FOR 2500 HOURS
The new long-life air filter can be used continuously 2500 hours without maintenance (at general office use).
OC343A-1.qxp 06.8.2 11:31 AM Page 3

4
2PART NAMES AND FUNCTIONS
Air outlet
Intake grille Air intake
Left/right guide vanes
Change the direction of airflow
from the horizontal blower.
Long-life filter
Removes dust and foreigh matter from air coming in
through the grille (Recommended cleaning interval :
Approx, every 2,500 operating hours)
Up/down guide vanes
Change the direction of airflow from the
vartical blower.
● Remote controller
● Operation buttons
●Indoor Unit
[PAR-21MAA]
● Once the controls are set, the same operation mode can be repeated
by simply pressing the ON/OFF button.
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
Set Temperature 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
door
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 preceding operation
number
Ventilation button
(Operation button)
To next operation number
OC343A-1.qxp 06.8.2 11:31 AM Page 4

5
●Display
For purposes of this explanation,
all parts of the display are shown
as lit. During actual operation, only
the relevant items will be lit.
˚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
Identifies the current operation
Shows the operating mode, etc.
* Multilanguage display is sup-
ported.
“Centrally Controlled” indicator
Indicates that operation of the re-
mote 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, shows the time
remaining.
“Sensor” indication
Displayed when the remote controller
sensor is used.
“Locked” indicator
Indicates that remote controller but-
tons have been locked.
“Clean The Filter” indicator
Comes 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
The indicator shows the direc-
tion of the outcoming airflow.
“One Hour Only” indicator
Displayed if the airflow is set to
Low and downward during COOL
or DRY mode. (Operation varies
according to model.)
The indicator goes off after one
hour, at which time the airflow
direction also changes.
Room Temperature display
Shows the room temperature.
Louver display
Indicates the action of the swing
louver. Does not appear if the
louver is stationary.
(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.
Caution
●Only the Power on indicator lights when the unit is stopped and power supplied to the unit.
●If you press a button for a feature that is not installed at the indoor unit, the remote controller will display the “Not Available”
message.
If you are using the remote controller to operate multiple indoor units, this message will appear only if the feature is not
present at every unit connected.
●When power is turned ON for the first time, it is normal that “PLEASE WAIT” is displayed on the room temperature
indication (For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappear then start the operation.
OC343A-1.qxp 06.8.2 11:31 AM Page 5

6
3SPECIFICATIONS
3-1. 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
W2. Air flow and the noise level are indicated as Low - Medium2 - Medium1 - High.
Item
V·Hz
Btu/h
Btu/h
kW
kW
A
A
—
in.
in.
in.
—
—
CFM
CFM
Pa
kW
—
in.
in.
in.
dB
lb
Cooling capacity
Power
Heat exchanger
Air filter
Fan ✕No
Pipe
dimensions
Unit drain pipe size
Noise level W2
Product weight
Exterior
(munsell symbol)
Fan motor
output
External
static pressure
Liquid
side
Gas
side
Heating capacity
F
a
n
Dimensions
Height
Width
Depth
Electric characteristic
Input
Cooling
Heating
Cooling
Heating
Current
PCFY-P15NGMU-E PCFY-P24NGMU-E PCFY-P30NGMU-E PCFY-P36NGMU-E
Single phase 208/230V 60Hz
15,000
17,000
0.08
0.08
0.40
0.40
24,000
27,000
0.09
0.09
0.45
0.45
30,000
34,000
0.23
0.23
1.12
1.12
36,000
40,000
0.27
0.27
1.32
1.32
420-490-570-640
380-470-530-600
0.07
32-34-37-39
75
Unit : Munsell<0.70Y 8.59/0.97>
51-9/16
26-25/32
Cross fin(Aluminum plate fin and copper tube)
Sirocco fan ✕3
0
PP honey comb
5/8"
3/8"
1" I.D. (PVC pipe VP-20 connectable)
5/8" / 3/4"(compatible)
3/8"
8-9/32 10-5/8
640-710-810-880
600-670-770-830
0.09
36-38-41-43
82
63-3/4
Sirocco fan ✕4
920-990-1120-1230
870-930-1050-1160
0.15
37-39-42-44
95
39-5/8
Sirocco fan ✕2
280-350-390-420
250-310-350-380
0.054
1/2"
1/4"
29-33-36-38
60
DRY
Air flow W2
WET
OC343A-1.qxp 06.8.2 11:31 AM Page 6

7
3-2. ELECTRICAL PARTS SPECIFICATIONS
Parts name
Model Symbol
TH21
TH22
TH23
FUSE
MF
C1
MV
LEV
TB2
TB5
TB15
250V 6A
OFF 266˚F ±41˚F
(L1, L2, GR) 330V 30A
(M1, M2, S) 250V 20A
(1, 2) 250V 10A
3µF ✕440V
Inner-thermostat
4µF ✕440V 5µF ✕440V 7µF ✕440VFan motor capacitor
Vane motor
Linear expansion valve
PCFY-P15NGMU-E PCFY-P24NGMU-E PCFY-P30NGMU-E PCFY-P36NGMU-E
Room temperature
thermistor
Liquid pipe temperature
thermistor
Gas pipe temperature
thermistor
Fuse
(Indoor controller board)
Fan motor
(with inner-thermostat)
Power supply
terminal block
Transmission
terminal block
MA remote controller
terminal block
DC12V Stepping motor drive
port [3.2 (0~2000pulse) EDM-40YGME
4-Pole Output 54W
D09B4P54MS
MP35EA
DC12V MP42EA DC12V
4-Pole Output 70W
D09C4P70MS 4-Pole Output 90W D10C4P90MS 4-Pole Output 150W D10D4P150MS
DC12V Stepping motor drive
port [5.2 (0~2000pulse) EDM-80YGME
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"
OC343A-1.qxp 06.8.2 11:31 AM Page 7

8
3-3. 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
PCFY-P15NGMU-E High
NOTCH
Medium1
Medium2
Low
38
SPL(dB)
36
33
29
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
PCFY-P24NGMU-E High
NOTCH
Medium1
Medium2
Low
39
SPL(dB)
37
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
PCFY-P30NGMU-E High
NOTCH
Medium1
Medium2
Low
43
SPL(dB)
41
38
36
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
PCFY-P36NGMU-E High
NOTCH
Medium1
Medium2
Low
44
SPL(dB)
42
39
37
LINE
UNIT
About 1.4m
MICROPHONE
CEILING
1m
1m
OC343A-1.qxp 06.8.2 11:31 AM Page 8

9
OUTLINES AND DIMENSIONS
4
9
2-7/16(62) 1-15/16(49)
1-3/4(45) 11-13/16(300)
7/16(11)
Knock out hole for fresh air intake
9
1-1/4(32)6-11/32(161)
(7~8)
1/4~9/32
1-21/32(42) 7-1/16(179)
3-1/8(79)
1-1/2(38)1-1/2(38)
5-5/32(131)
(175)
1-13/16(46) 6-7/8 1/16(1)
3-11/16(86)
5-7/16(138)
6-3/4(171)
10-3/8(263)
13-7/8(352)20-21/32(525)
36-17/32(928)
2-3/4(70)
9-1/32(229)
(150) 23/32(18)
5-29/32
5-1/2(140) 2-3/4(70)
3-1/8(80)12-5/8(320)
3-7/16(87)
5/8(16)
6-3/16(157)
9-1/2(241)
7-15/16(201)
7-3/16(182)
Less than
26-25/32(680)
9-13/16(230)
39-3/8(1000) 11-13/16(300)
10-5/8(270)
or more
6
Allowing clearances
Less than
1/16(1)
(Gap to ceiling)
19-11/16(500)
or more
or more
Ceiling
Rear wall
10(254)
19-29/32(506) 2-7/32(56)
26-25/32(680)
36-5/32(918)
3-17/32(90)6-3/8(161)
Air intake
liquid 1/4F([6.35)
gas 1/2F([12.7)
(Drainage)
38-11/16(983)
3-25/32(96)
7-3/32(180)
8-9/32(210)
3-3/16(81)
39-5/8(1000)
35-19/32(904)
Air outlet
36-23/32(933) (Suspension bolt pitch)
4
5
81
(FRONT VIEW)
2
Electrical box
3
2
7
Electrical box
When electrical box is pulled down
Ceiling
Refrigerant-pipe connection(liquid pipe side/flared connection) Knock out hole for upper pipe arrangement Knock out hole for left drain pipe arrangement Knock out hole for wiring arrangement
Drainage pipe connection(1-1/32(26mm)I.D.) Drainage pipe connection(for the left arrangement) Knock out hole for left drain-piping arrangement Refrigerant-pipe connection(gas pipe side/flared connection)
1 2 3 4 5 6 7 8
NOTES. 1.Use M10 or W3/8 screw for anchor bolt. 2.Please be sure when installing the drain-up machine (option parts),refrigerant pipe will be only upper drain pipe arrangement.
Unit: in.(mm)
INDOOR UNIT
PCFY-P15NGMU-E
OC343A-1.qxp 06.8.2 11:31 AM Page 9

10
9
11-13/16(300)
3-15/16(100)
2-1/8(54) 2-1/4(57)
7/16(11)
9
Knock out hole for fresh air intake
(6~7)
1/4~9/32
1-21/32(42) 7-1/16(179)
1-1/4(32)6-11/32(161)
20-21/32(525)
1-1/2(38)
3-1/8(79)
10-3/8(263)
6-3/4(171)
5-7/16(138)
3-3/8(86)
6-7/8
(175)
1-13/16(46)
5-5/32(131)
1/16(1)
1-1/2(38)
16-3/8(416)
48-5/8(1235)
2-3/4(70)
23/32(18)
5-1/2(140)
(150)
5-29/32
12-5/8(320) 3-1/8(80)
48-13/16(1240)
50-13/16(1290) 47-13/16(1214)
51-9/16(1310)
7-3/32(180)
8-9/32(210)
2-3/16(81) 3-25/32(96)
26-25/32(680) 2-7/32(56)19-29/32(506)
10(254)
3-17/32(90)6-3/8(161)
48-3/8(1228) 11-13/16(300)51-9/16(1310)10-5/8(270)
or more
26-25/32(680)
Less than
3-7/16(87)
5/8(16)
6-3/16(157)
or more
Ceiling
Rear wall
Allowing clearances
8
5
14
Ceiling
Electrical box (FRONT VIEW)
2
3
When electrical box is pulled down
6
NOTES. 1.Use M10 or W3/8 screw for anchor bolt. 2.Please be sure when installing the drain-up machine (option parts),refrigerant pipe will be only upper drain pipe arrangement.
(Suspension bolt pitch)
Air outlet
Air intake
2
7
9-1/32(229)
2-3/4(70)
Electrical box
gas 5/8F([15.88)
liquid 3/8F([9.52)
(Drainage)
7-3/16(182)
7/15/16(201)
9-1/2(241)
Refrigerant-pipe connection(liquid pipe side/flared connection) Knock out hole for upper pipe arrangement Knock out hole for left drain pipe arrangement Knock out hole for wiring arrangement
1 2 3 4 5 6 7 8
Drainage pipe connection(1-1/32(26mm)I.D.) Drainage pipe connection(for the left arrangement) Knock out hole for left drain-piping arrangement Refrigerant-pipe connection(gas pipe side/flared connection)
9-13/16(250)
19-11/16(500)
(Gap to ceiling)
or more
1/16(1)
Less than
Unit : in.(mm)
PCFY-P24NGMU-E
OC343A-1.qxp 06.8.2 11:31 AM Page 10

11
7/16(11)
9
2-3/16(55)5-7/8(150)
13(330)
7-7/8(200)
9
Knock out hole for fresh air intake
(6~7)
7-2/32(289)1-21/32(42)
Electrical box
(160)
1/4~9/32
3-21/32(93)
6-5/16
1-1/2(38) 1-1/2(38)
5-1/2(140)
(196) 1/16(1)
9-9/32(236)
7-9/16
1-25/32(45)
10-3/8(263)
6-3/4(171)
5-7/16(138)
3-3/8(86)
27-1/16(687)20-21/32(525)
48-5/8(1235)
2-3/4(70)
9-1/32(229)
(56)
10(254)
19-29/32(506) 2-7/32
26-25/32(680)
3-17/32(90)6-3/8(160)
48-3/8(1228)
3-3/16(81) 3-25/32(96)
8-5/32(207)
10-5/8(270)
47-13/16(1214)
51-9/16(1310)
50-13/16(1290)
48-13/16(1240)
23/32(18)5-29/32(150)
2-3/4(70)5-1/2(140)
12-5/8(320) 3-1/8(80)
5/8(16)
3-7/16(87)
8-17/32(217)
7-3/16(182)
7-13/16(198)
9-5/8(245)
Less than
26-25/32(680)
10-5/8(270) (300)
11-13/16
51-9/16(1310)
19-11/16(500)
9-13/16(250)
Drainage pipe connection(1-1/32(26mm)I.D.) Drainage pipe connection(for the left arrangement) Knock out hole for left drain-piping arrangement Refrigerant-pipe connection(gas pipe side/flared connection)
8 7 6 5 4 3 2 1
Refrigerant-pipe connection(liquid pipe side/flared connection) Knock out hole for upper pipe arrangement Knock out hole for left drain pipe arrangement Knock out hole for wiring arrangement
Air intake
Air outlet
2
7
Electrical box
When electrical box is pulled down
8
514
2
3
Less than
or more
or more
Ceiling
(FRONT VIEW)
(Suspension bolt pitch)
(Drainage)
gas 5/8F([15.88)
liquid 3/8F([9.52)
(Gap to ceiling)
Allowing clearances
Rear wall
Ceiling
1/16(1)
6
NOTES. 1.Use M10 or W3/8 screw for anchor bolt. 2.Please be sure when installing the drain-up machine (option parts),refrigerant pipe will be only upper drain pipe arrangement.
Unit: in.(mm)
PCFY-P30NGMU-E
OC343A-1.qxp 06.8.2 11:31 AM Page 11

12
RG01N982
PCFY-P36NGMU-E
9
7-7/8(200) 13(330)
5-7/8(150) 2-3/16(55)
7/16(11)
When electrical box is pulled down
9
Knock out hole for fresh air intake
1-21/32(42)
Electrical box
3-21/32(93)6-5/16(160)
1/4~9/32(6~7)
1/16(1)1-25/32(45) 9-9/32(236) 7-9/16(192)
1-1/2(38) 1-1/2(38)
5-1/2(140)
10-3/8(263) 6-3/4(171)
5-7/16(138)
3-3/8(86)
27-1/16(687)
20-21/32(525)
60-13/16(1545)
9-1/32(229)
2-7/32(56)19-29/32(506)
10(254)
26-25/32(680)
3-3/16(81) 3-25/32(96)
8-5/32(207)
10-5/8(270)
60(1524)
63-3/4(1620)
23/32(18)5-29/32(150)
2-3/4(70)5-1/2(140)
12-5/8(320) 3-1/8(80)
3-7/16(87)
5/8(16)
8-17/32(217)
9-5/8(245)
7-13/16(198)
7-3/16(182) liquid 3/8F([9.52)
(Drainage)
gas 5/8F/3/4F(Compatible)
([15.88/[19.05)
Less than
26-25/32(680)
10-5/8(270) 11-13/16(300)63-3/8(1620)
or more
1/16(1)
19-11/16(500)
9-13/16(250)
Refrigerant-pipe connection(liquid pipe side/flared connection) Knock out hole for upper pipe arrangement Knock out hole for left drain pipe arrangement Knock out hole for wiring arrangement
1 2 3 4 5 6 7 8
Drainage pipe connection(1-1/32(26mm)I.D.) Drainage pipe connection(for the left arrangement) Knock out hole for left drain-piping arrangement Refrigerant-pipe connection(gas pipe side/flared connection)
6
4
851
3
2
Electrical box
2
7
Air outlet
Air intake
or more
or more
Less than
Ceiling
(FRONT VIEW)
(Suspension bolt pitch)
Allowing clearances
Rear wall
Ceiling
(Gap to ceiling)
NOTES. 1.Use M10 or W3/8 screw for anchor bolt. 2.Please be sure when installing the drain-up machine (option parts),refrigerant pipe will be only upper drain pipe arrangement.
7-1/16(239)
2-3/4(70)
60-7/16(1535)
60-29/32(1547)
6-3/8(161) 3-17/32(90)
Unit : in.(mm)
PCFY-P36NGMU-E
OC343A-1.qxp 06.8.2 11:31 AM Page 12

WIRING DIAGRAM
5
13
PCFY-P15NGMU-E PCFY-P24NGMU-E PCFY-P30NGMU-E PCFY-P36NGMU-E
MF
654321 87654321 4321
654321
654321
21 21 21
SW2
(GRN)
VANE
CN6V
(RED)
ADDRESS
CN81
(RED)
ADDRESS
CN42
FUSE
250V
6A
(GRN)
REMOTE
INDICATION
CN52
(WHT)
CENTRALLY
CONTROL
CN51
(WHT)
REMOTO
SWITCH
CN32
(WHT)
LEV
CN60
See fig:w1
ON
OFF
X1
X4
ZNR
F.C
ON
OFF
SW3 SW4
6
ORN
BLU
WHT
YLW
BRN
RED
654321
12345678910123456 12345
3
2
1
2
1
1
2
1
2
1
2
3
(YLW)
HEATER
CN24
135
135
13 13 13
321
MV
654321
654321
MV
654321
654321
MV
TH21 TH22 TH23
21 21
L1
L2
GR
X4 X1
M1
M2
1
2
8
7
6
5
4
3
2
1
4
3
2
1
48
6
5151 13
(WHT)
DRAIN
CN31
AC208-230V
(RED)
CNSK
DC13.1V
(WHT)
CN2S
(WHT)
LIQUID
CN21
(RED)
INTAKE
CN20
(BLK)
GAS
CN29
(GRN)
VAHE
CN6V
(GRN)
VAHE
CN6V
CN2D
(WHT)
CN3A
(BLU)
CN2M
(BLU)
M-NET
LED1
TRANS
BLU
BLU
BLU
BLK
WHT
ORN
ORN
RED
LED2
CNDK
(RED)
CNP
(BLU)
FAN
(WHT) CND (RED)
BLK
BLK
BLU
RED
RED
WHT
WHT
C1
I.B
P.B
TB2
PULL BOX
FUSE(15A)
BREAKER
(15A)
TO NEXT INDDOR UNIT
GRN
/ YLW
POWER SUPPLY
~/N 208-230V 60Hz
TB5 S(SHIELD)
TO OUTDOOR UNIT
BC CONTROLLER
REMOTE CONTROLLER
DC24-30V
TO MA-REMOTE
CONTROLLER
DC8.7-13V
TB15
MODEL
PCFY-P30NGMU-E MODEL PCFY-P36NGMU-E
65
BLU
WHT
YLW
ORN
RED
RED
BRN
BLU
WHT
YLW
ORN
A.B
208V 230V
SW5
SW1
SW12
2ND
DIGIT
3RD
DIGIT
SWA
SWC
3
2
1
0SW11
1ST
DIGIT
0SW14
CONNECTION
NO.
0
(RED)
ADDRESS
CN43
(RED)
ADDRESS
CN82
ON
OFF
12345678910
ORN
BLU
WHT
YLW
BRN
RED
LEV
PCFY-P15NGMU-E
PCFY-P24NGMU-E
PCFY-P30NGMU-E
PCFY-P36NGMU-E
Models SW2< w 1> SW3
ON
OFF
123456
ON
OFF
12345678910
ON
OFF
12345678910
ON
OFF
123456
ON
OFF
123456
ON
OFF
123456
<w 2 > Use Copper Supply Wire.
w2
1
2
Symbol
I. B Connector Heater
Remote switch
Centrally control
Remote indication
Drain-up machine
Fan phase control
FUSE (6A/250V)
Switch Capacity code
Mode selection
Model selection
Aux.Relay Drain-up machine
Fan motor
Varistor
INDOOR POWER BOARD
Capacitor (fan motor)
Linear expansion valve
Fan motor (with inner thermo)
Vane motor
Thermistor Room temp, detection
(
32°F/15k", 77°F/5.4k" )
Pipe temp, detection/Iiguid
(
32°F/15k", 77°F/5.4k" )
Pipe temp, detection/Gas
(
32°F/15k", 77°F/5.4k" )
Terminal Power supply
block Transmission
MA-remote controller
Legend
Name Symbol Name
P. B
C1
LEV
MF
MV
TH21
TH22
TH23
TB2
TB5
TB15
Indoor controller board
CN24
CN32
CN51
CN52
CNP
F.C
FUSE
SW2
SW3
SW4
X1
X4
ZNR
Symbol
A. B Switch Mode selection
Voltage selection
Address setting 1st digit
Address setting 2nd digit
Connection No.
Ceiling height Selector
Option Selector
Name
Circuit board Address
SW1
SW5
SW11
SW12
SW14
SWA
SWC
LED on indoor board for service
Meaning
Mark
Main power supply
Power supply for
MA-Remote controller
Main power supply(Indoor unit:208-230V)
power on➝Iamp is Iit
Power supply for MA-Remote controller
on➝Iamp is lit
Function
LED1
LED2
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:
w 1.
7.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.
OC343A-1.qxp 06.8.2 11:31 AM Page 13

14
6REFRIGERANT SYSTEM DIAGRAM
Strainer (#100mesh)
Strainer (#100mesh)
Strainer (# 50mesh)
Heat exchanger
Room temperature thermistor TH21
Gas pipe temperature
thermistor TH23
Liquid pipe temperature
thermistor TH22
Linear expansion valve
Gas pipe
Liquid pipe
Flare connection
Gas pipe
PCFY-P15NGMU-E
{12.7(1/2”)
PCFYP24/P30NGMU-E
{15.88(5/8”)
PCFY-P36NGMU-E
{15.88(5/8”)/{19.05(3/4”)
(compatible)
Liquid pipe {6.35(1/4”) {9.52(3/8”) {9.52(3/8”)
Model
Item
PCFY-P15NGMU-E
PCFY-P24NGMU-E
PCFY-P30NGMU-E
PCFY-P36NGMU-E
Unit : mm(in.)
OC343A-1.qxp 06.8.2 11:31 AM Page 14

MICROPROCESSOR CONTROL7
15
<How to operate>
1Press POWER ON/OFF button.
2Press the operation MODE button to display COOL.
3Press 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.
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
OFF
Hr
AFTER
FILTER
FUNCTION
ONLY1Hr.
WEEKLY
SIMPLE
AUTO OFF
INDOOR UNIT CONTROL
7-1. COOL OPERATION
Control modes Control details
1-1. Thermoregulating function (Function to prevent restarting for 3 minutes)
• Room temperature ]desired temperature + 2°F
···Thermo ON
• Room temperature [desired temperature ···Thermo OFF
1-2. Frozen prevention control
Detected condition : When the liquid pipe temp. (TH22) is 32°F or less in 16
minutes from compressor 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.
1Liquid pipe temp. (TH22) turns to be 50°F or above.
2The condition of the thermo OFF become complete
by thermoregulating, etc.
3The operation modes become mode other than COOL.
4The operation stops.
By the remote controller setting (switch of 4 speeds)
2. Fan
1. Thermoregulating
function
Remarks
Type Fan speed notch
[Low], [Med2], [Med1], [High]
4 speeds
To be continued to the next page
OC343A-1.qxp 06.8.2 11:31 AM Page 15

16
→
3
2
1
→
Control modes Control details
Drain pump control
•Always drain pump ON during the COOL and DRY mode operation
(Regardless of the thermo ON/ OFF)
•When the operation mode has changed from the COOL or DRY to the others
(including Stop), OFF the control after the drain pump ON for 3 minutes.
Drain sensor function
• Energize drain sensor at a fixed voltage for a fixed duration. After energizing,
compare the drain sensor’s temperature to the one before energizing, and judge
whether the sensor is in the air or in the water.
Basic control system
• While drain pump is turned on, 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 position.
(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 [Med1], [Med2] or [Low] of the fan
speed notch, the vane changes to horizontal position after 1 hour.
4. Vane
(up/ down vane change)
3. Drain pump
Remarks
· Drain sensor
Indoor control
p.c. board
CN31
· "SET FOR 1 HOUR"
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
From the preceding page
OC343A-1.qxp 06.8.2 11:31 AM Page 16

17
<How to operate>
1Press POWER ON/OFF button.
2Press the operation MODE button to display DRY.
3Press 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.
Control modes Control details
1-1. Thermoregulating function (Function to prevent restarting for 3 minutes)
Setting the Dry thermo by the thermoregulating signal and the
room temperature (TH1).
Dry thermo ON Room temperature ] desired temperature + 2°F
Dry thermo OFF Room temperature [ desired temperature
1-2. Frozen prevention control
No control function
Indoor fan speed depends on the compressor conditions.
3. Drain pump
1. Thermoregulating
function
Remarks
Room
temperature 3 min. passed since starting operation
Thermoregulating signal
Room temperature (T1)
Dry thermo
ON
time (min)
Dry thermo
OFF
time (min)
Less than 64°F
Over 64°FON
OFF
T1 ] 83°F
83°F > T1 ] 79°F
79°F > T1 ] 75°F
75°F > T1
Unconditional
93
73
53
33
10
3
Dry thermo OFF
2. Fan
Note: Remote controller setting is not acceptable.
Dry thermo 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
˚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
7-2. DRY OPERATION
OC343A-1.qxp 06.8.2 11:31 AM Page 17

18
Control modes Control details
Set by remote controller.
2. Drain pump
Remarks
1. Fan Type Fan speed notch
4 speeds [Low], [Med2], [Med1], [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:
1ON for 3 minutes after the operation mode is switched from COOL or DRY to
another operation mode (FAN).
2ON for 6 minutes after the drain sensor is determined to be submerged using the
liquid level detection method given below.
3ON for 6 minutes after indoor piping (liquid piping) temperature – indoor intake
temperature [-18°F, AND the drain sensor input is at the short or open level.
(If condition 2or 3is 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 temperature rise after self-heating the sensor. This
process is performed if any of the following conditions is satisfied:
1Drain pump is ON.
2Indoor piping (liquid piping) temperature – indoor intake temperature [-18°F
3Indoor piping (liquid piping) temperature or indoor intake temperature is at the
short or open level temperature.
4Every hour after the drain pump is 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
OFF
Hr
AFTER
FILTER
FUNCTION
ONLY1Hr.
WEEKLY
SIMPLE
AUTO OFF
7-3. FAN OPERATION
<How to operate>
1Press POWER ON/OFF button.
2Press the operation MODE button to display FAN.
OC343A-1.qxp 06.8.2 11:31 AM Page 18

19
<How to operate>
1Press POWER ON/OFF button.
2Press the operation MODE button to display HEAT.
3Press the TEMP. button to set the desired temperature.
NOTE: The set temperature changes 2°F when the or button is
pressed one time. 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 from the time the heating operation
starts unit the heated air begins to blow.
Control modes Control details
1-1. Thermoregulating function (Function to prevent restarting for
3 minutes)
•
Room temperature [ desired temperature -2°F ···Thermo ON
• Room temperature ] desired temperature ···Thermo OFF
1. Thermoregulating
function
Remarks
Controlled by the remote controller (4-speed)
Priority is given to below-mentioned controlled mode
2-1. Hot adjuster 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)
2-5. Capacity increasing mode
2-1. Hot adjuster mode
The fan controller becomes the hot adjuster mode for the
following conditions.
1When starting the HEAT operation
2
When the thermoregulating function changes from OFF to ON.
3When releasing the HEAT defrosting operation
2. Fan
A: HOT adjuster mode start
B: 5 min after the condition A or the indoor
liquid pipe temperature turned 95°F or more
C: 2 min after the condition A
(Terminating the hot adjuster mode)
ACB
[Extra Low]
[Low]
Set fan speed by the remote controller
Hot adjuster mode ✻1
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.
· This control is same for the model
without auxiliary heater.
✻1 "STAND BY" will be displayed
during the hot adjuster mode.
To be continued to the next page.
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
OFF
Hr
AFTER
FILTER
FUNCTION
ONLY1Hr.
WEEKLY
SIMPLE
AUTO OFF
7-4. HEAT OPERATION
OC343A-1.qxp 06.8.2 11:31 AM Page 19

20
→
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
The vane is horizontally fixed for the following modes.
(The control by the remote controller is temporally invalidated
and it is controlled by the unit.)
•Thermo OFF
•Hot adjuster [Extra low] mode
•Heat defrost mode
3. Drain pump
4. Vane control
(Up/ down vane
change)
From the preceding page
OC343A-1.qxp 06.8.2 11:31 AM Page 20