Disperses airflow up and
down as well as adjusts the
angle of air flow direction.
FilterAir intake grill
Air outletAir outlet
Swing louvers
Air flow can be changed to horizontally
by moving the Guide vane to the left or
right.
Guide vane
● Remote controller
● Once the operation of the unit is set, subsequent operations can only be performed by pressing the ON/OFF button
repeatedly.
w button
This switches between continuous
operation and the timer operation
l button
The sets the ventilation fan speed.
● Operation buttons
q button
This sets or switches the current
time, start time and stop time.
a button
Press this button to switch the cooler
electronic dry (dehumidify),
automatic and heater modes.
i TEMP. button
This sets the room temperature. The
temperature setting can be
performed in 1°C units.
Setting range :
Cooler 19°C to 30°C
Heater 17°C to 28°C
CHECK-TEST RUN button
Only press this button to perform an
inspection check or test operation.
Do not use it for normal operation
FILTER button
This resets the filter service
indication display
j button
This adjusts the vertical angle of the
ventilation.
ON/OFF button
This switches between the operation
and stop modes each time it is
pressed. The lamp on this button
lights during operation.
The model name of the remote
controller is indicated.
PAR-JH241KA(2.5 ~ 4)
PAR-JH150KA(1.6/2)
k button
This switches the horizontal fan
motion ON and OFF.
(This button does not operate in this
model.)
241
FILTER
CHECK MODE
TEST RUN
Page 3
3
Caution
● Only the display lights when the unit is stopped and power supplied to the unit.
● When power is turned ON for the first time the (CENTRAL CTRL) display appears to go off momentarily but this is not a
malfunction.
● When the central control remote control unit, which is sold separately, is used the ON-OFF button, a button and
i TEMP button do not operate.
● “NOT AVAILABLE” is displayed when the k button are pressed.This indicates that this room unit is not equipped with
the fan direction adjustment function and the louver function.
CENTRALLY
CONTROLLED display
This indicates when the unit is
controlled by optional features such
as central control type remote
controller.
w display
This indicates when the continuous
operation and time operation modes
are set.
It also display the time for the timer
operation at the same time as when
it is set.
OPERATION MODE display
This indicates the operation mode.
STANDBY display
This indicates when the standby
mode is set from the time the sleep
operation starts until the heating air
is discharged.
DEFROST display
This indicates when the defrost
operation is performed.
CHECK display
This indicates when a malfunction
has occurred in the unit which should
be checked.
display
FILTER
This display lights when the filter
need to be cleaned.
88°C display
This displays the selected setting
temperature.
r display
The current time , start time and stop
time can be displayed in ten second
intervals by pressing the time switch
button. The start time or stop time is
always displayed during the timer
operation.
l display
The selected fan speed is displayed.
j display
This indicates the air direction.
● Display
In this display example on
the bottom left, a condition
where all display lamps light
is shown for explanation
purposes although this differs
from actual operation.
display
This display lights in the check mode
or when a test operation is
performed.
CHECK MODE
TEST RUN
88°C display
The temperature of the suction air is
displayed during operation. The
display range is 8° to 39°C. The
display flashes 8°C when the actual
temperature is less than 8° and
flashes 39°C when the actual
temperature is greater than 39°C.
Operation lamp
This lamp lights during operation,
goes off when the unit stops and
flashes when a malfunction occurs.
Display
This lamp lights when electricity is
supplied to the unit.
241
FILTER
CHECK MODE
TEST RUN
Page 4
2
SPECIFICATIONS
Item
Function
Capacity
Total input
Service Ref.
Power supply(phase,cycle,voltage)
Input
Running current
Starting current
External finish
Heat exchanger
Fan Fan(drive) ✕ No.
Fan motor output
Airflow(Low-High)
External static pressure
Booster heater
INDOOR UNITOUTDOOR UNIT
Operation control & Thermostat
Noise level(Low-High)
Unit drain pipe O.D.
Dimensions
Weight
Service Ref.
Power supply (phase, cycle, voltage)
Input
Running current
Starting current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Heat exchanger
Fan Fan(drive)✕No.
Fan motor output
Airflow
Defrost method
Noise level
Dimensions
Weight
Refrigerant
Charge
Oil<Model>
Pipe size O.D.
Connection method
Between the indoor & outdoor unit
REFRIGERANT PIPING
Note1. Rating Conditions (JIS B 8616)
Cooling : Indoor : 27°C (80°F) DB, 19°C (66°F) WB
Heating : Indoor : 20°C (68°F) DB
Outdoor : 35°C (95°F) DB, 24°C (75°F) WB
Outdoor : 7°C (45°F) DB, 6°C (43°F) WB
Liquid mm(in.)
Gas mm(in.)
Indoor side
Outdoor side
Height difference
Piping length
The unit of pressure has been changed to Mpa on the international system of unit (SI unit system).
The converted score against the traditional unit system can be gotten according to the formula below.
1(Mpa) = 10.2(kg/F)
4. OUTLET AIR SPEED AND COVERAGE RANGE
The air coverage range is the value up to the position where the air speed is 0.25m/sec. when air is blown out horizontally from
the unit at the Hi notch position.
The coverage range should be used only as a general guideline since it varies according to the size of the room and the furniture
inside the room.
Page 22
22
90
80
70
60
50
40
30
20
10
631252505001000200040008000
APPROTIMATE
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
PKH-1.6FKA
PKH-2FKA
Hi
Lo
NOTCH
43
36
SPL(db
(A))LINE
90
80
70
60
50
40
30
20
10
631252505001000200040008000
APPROTIMATE
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
PKH-2.5FKA
PKH-3FKA
Hi
Lo
NOTCH
45
39
SPL(db
(A))LINE
90
80
70
60
50
40
30
20
10
631252505001000200040008000
APPROTIMATE
TERESHOLD OF
REARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
PKH-4FKSA
Hi
Lo
NOTCH
46
41
SPL(db
(A))LINE
UNIT
WALL
1m
1m
MICROPHONE
5. NOISE CRITERION CURVES
Ambient temperature 27:
Test conditions are based on JIS Z8731
Page 23
23
4
OUTLINES AND DIMENSIONS
Unit : mm
1. INDOOR UNIT
PKH-1.6FKA-E
PKH-2FKA-E
Pipe position
Left side
Lequid pipe
Gas pipe
Service space required
around indoor unit
(100 for left-hand
side piping)
Right side
130 or less
2 tapping screws
for installation plate
(Necessary clearance for
Unit installation)
Drain pipe O.D. 20
Front
50 or more
2-unit hangers
Unit cennter
Liquid pipe position
Gas pipe position
(Width of unit)
Knock out hole for
left-rear piping
Knock out hole for
left-rear piping
Rear piping hole
2 X5 - 2.9 hole
for tapping screw
Details of installation plate
1 Sleeves are available on
the market.
2 This size shows the lower
end of through hole.
Sleeve
9090~ 100
Through hole
150 or more
Knock out hole for
left-hand side piping
Ref.pipes & drain pipe
215
168
2134
8
20
70
300
47
30 or more
180 or more
80
25
35
60
Left side
Air intake
Front
1250
449 Air intake
Auto vanes
Service panel for
power supply connection
449 Air intake
968 Air intake
48
236
227
Right side
Terminal block
Right side
Knock out hole for right piping
(2:1)
Knock-out hole for
night-hand side piping
Knock out hole
for piping
8
60
Knock out hole for piping
Terminal block for control
Terminal block & pipe position
Drainage
Drainage(Flexible hole: length 1200)
Liquid pipe
Bass pipe
Lower side
Terminal block for
power supply
Knock out hole for under-piping
15 or less
bolt
Installation bolt position
200
B
B
A
A
8
8
60
91
65
20
70
(2:1)
70
Lower side
976
16 -louvers
(manual)
500
479 Air outlet479 Air outlet
26
173
223
222
143
553
635
685
170
190
200
1100
50
1
Knock out hole
for piping
1
2
2
3/8F
5/8F
0355380130
177
227
(178)
(375)
447
190
13- 14
hole
60
1250
330
80
0
53
68- 5
hole
277
Tapping screw
300
491
476
450
405
323
276
229
179
150
70
24
0
70
150
174
224
271
318
374
9
73
405
450
476
486
625
(Height ut unit)
85
45
286X
2
R
52.5
R52.5R
52.5
R
52.5
R52.5R
52.5
Page 24
24
Unit : mm
PKH-2.5FKA-E
PKH-3FKA-E
Gas pipe
Terminal block for power supply
Terminal block for remote controller
Top
62.5
13
235
45
235
45
235
45
235
Knock out hole for right piping
Refrigerant pipe. Drain pipe
235
Right side
Front
1400
Air intake
1090
Left side
C
15
Bolt
197
Terminal block for control
Liquid pipe
Drain hose O.D. 20
107
111
58
(Gas pipe)
55
120
(Liquid pipe)
42
183
Drain hose
1110
Liquid pipe 9.52(3/8F)
Gas pipe 15.88(5/8F)
240
Air outlet
552
Lower side
Auto vane
1120
Air outlet
B
Change vane (manual)
Knock out hole for under-piping
Refrigerant pipe. Drain pipe
552
Under panel
Removable at left-hand
side piping
280
60
18430
Rear piping opening
340
2980
25
3030
10
90
245
285
455
990
10 91=(910)
19
91
Drainage range
on right-hand side
900
Drainage range
on left-hand side
18
18
610
Range for left rear piping opening
180
240280314
12-ø6 hole for
tapping screw
225
Drain hose for
Knock out hole for
left piping
A
30
left-hand side piping
4
100
39
37
74
65
37
Unit center
32
98
39
Knock out hole for piping
AB C
30
100
74
37
439
Wall fixture
66-ø6 hole for
tapping screw
32-ø12 hole for bolt
Page 25
25
Unit : mm
PKH-4FKSA-E
235
45
235
45
235
45
235
45
235
62.5
13
58
42
340
197
Top
Front
Right side
Left side
1680
1370
Air intake
235
C
Knock out hole for right piping
Knock out hole for left piping
Drain hose for left-hand side piping
Drain hose
Drain hose
Lower side
Auto vane
(Gas pipe)
Bolt
Gas pipe
15
Terminal block for power supply
Terminal block for control
Terminal block for remote controller
(Liquid pipe)
Gas pipe 19.05(3/4F)
Liquid pipe 9.52(3/8F)
Liquid pipe
A
30
65
39
98
37
74
439
100
30
37
74
4
2980
280
3030
18430
60
10
39
37
65
100
AB C
Knock out hole for wiring
25
1110
183
240
B
1400
55
120
102
111
Drain hose O.D. 20
694
Air outlet
694
Air outlet
Change vane (manual)
Under panel
(Removable at left-hand side piping)
Knock out hole for under-piping
Refrigerant pipe. Drain pipe
Rear piping opening
Range for left rear piping openingRange for left rear piping opening
12-ø6 hole for tapping screw
84-ø6 hole for
tapping screw
Wall fixture
Unit out line
Unit center
41-ø12 hole for bolt
295225
18
18
91
900
1270
595
285
245
19
240280314
750
90
Drainage range
on right-hand side
13 91=(1183)
180
Drainage range
on left-hand side
Page 26
26
Unit : mm
18
130
Rear side wiring arrangement opening.
120
FILTER
CHECK MODE
TEST RUN
FILTER
CHECK MODE
TEST RUN
46
83.5
SW18
SW17
REMOTE CONTROLLER
PAR-JH241KA
CAUTION
2. REMOTE CONTROLLER
Page 27
5
WIRING DIAGRAM
PKH-1.6FKA-E / PKH-2FKA-E
SYMBOLSYMBOL
C
CN1 <R.B>
CN2 <R.B>
CN2L <I.B>
CN51 <I.B>
FAN2
F1 <I.B>
I.B
LED1 <I.B>
LED2 <I.B>
LS
MF
MV
R.B
RT1
GRN/YLW
MF
WHT
LS
MV
C
I.B
WHT
BLK
RED
FAN1
1
CN6V
VANE
X4
X4
ZNR
FAN2
135
SW5
SW2
ON
OFF
123456 101234
FAN MOTOR CAPACITOR
PROGRAM TIMER CONNECTOR
REMOTE SWITCH CONNECTOR
LOSSNAY CONNECTOR
CENTRALLY CONTROL CONNECTOR
EMERGENCY OPERATION CONNECTOR
FUSE (6.3A 250V)
INDOOR CONTROLLER BOARD
DC 12V POWER LED
DC 5V POWER LED
LIMIT SWITCH
FAN MOTOR
VANE MOTOR
REMOTE CONTROLLER BOARD
ROOM TEMPERATURE THERMISTOR
(0°C/15kΩ ,25°C/5.4kΩ DETECT)
POWER SUPPLY
~(1 PHASE)
AC220-240V 50Hz
AC220V 60Hz
TB2
ON
SW7
BRN
CN4T
TRANS
TO
REMOCON
CN22
12
OUTDOOR
3
CN30
2
1
1122
CN23
VANE
21
INDOOR COIL THERMISTOR
(0°C/15kΩ ,25°C/5.4kΩ DETECT)
MODE SELECTOR
ADDRESS SELECTOR
EMERGENCY OPERATION SWITCH
MODEL SELECTOR
MODEL SELECTOR
ADDRESS SELECTOR
FUNCTION SELECTOR
TRANSFORMER
TERMINAL BLOCK (POWER SUPPLY)
TERMINAL BLOCK
(INDOOR/OUTDOOR CONNECTING WIRE)
TERMINAL BLOCK (REMOTE CONTROLLER)
LINE TRANSMISSION TERMINAL BLOCK
FAN MOTOR RELAY
VARISTOR
BLU
BLU
BRN
ORN
YLW
OFF
TRANSMISSION WIRES
DC12V
TB5
2
1
TB4
3
TO OUTDOOR UNIT
2
CONNECTING WIRES
1
DC12V
R.B
RT2
RT1
SW18
4321
SW17
87654321
NAME
ON
OFF
OFF
ON
OFF
ON
2FKA1.6FKAMODELS
1 2 31 2 3
TB6
A01 B02
CN1
45231
CN2
321
NOTES :
1. Since the indoor fan motor (MF) is connected with 230, 240V power, using 220V power will require a setting change of the dip switch (SW7<I.B>) on the indoor
controller board as shown in fig :
fig w1
Indoor fan motor (MF) for 220V .
2. Since the indoor transformer (T) is connected with 240V power if 220,230V power is used. Change the wiring connection showing fig :
fig w2
When power supply is
3. Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.
4. Indoor and outdoor connecting wires are made with polarities, make wiring matching terminal numbers.
5. Symbols used in wiring diagram above are, : Connector / : Terminal block.
6. Emergency operation
If remote controller or microcomputer fails but there is no other trouble, emergency operation is possible by setting dip switch (SW3<I.B>) on the indoor
controller board.
[Check items]
(1)Make sure that no other trouble exist the outdoor unit. Trouble with the outdoor unit prevents emergency operation.
(If any trouble exists the outdoor unit error code “P8”will be displayed on the remote controller and the trouble position will be shown on the outdoor controller
board LED. See electric wiring diagram of the outdoor unit for details.)
(2)Make sure that there is no trouble with the indoor fan.
Emergency operation will be continuous operation mode due to power ON/OFF (ON/OFF with the remote controller is not possible).
[Emergency operation procedure]
(1)Switch the fan connector on the indoor controller board from FAN 1 to FAN 2.
(2)Set the dip switch (SW3<I.B>) on the indoor controller board to 1 on and 2 off for cooling and 1 - 2 on for heating.
(3)Turn on outdoor unit side circuit breaker, then indoor unit side circuit breaker.
(4)During emergency operation indoor fan runs at high speed but automatic vane remains stop.
(5)Thermostat will mot function. Cold air blows out for defrosting during heating thus do mot operate defrosting for along time.
(6)Emergency cooling should be limited to 10 hours maximum.
(The indoor unit heat exchanger may freeze).
(7)After every operation, switch the fan connector to FAN1, and set all dip switches (SW3<I.B>) to OFF.
FAN MOTOR CAPACITOR
PROGRAM TIMER CONNECTOR
REMOTE SWITCH CONNECTOR
LOSSNAY CONNECTOR
DRAIN LIFT-UP MECHANISM CONNECTOR
CENTRALLY CONTROL CONNECTOR
FUSE (6.3A 250V)
INDOOR CONTROLLER BOARD
MODE SELECTOR JUMPER RESISTORS
MODE SELECTOR JUMPER RESISTORS
MODE SELECTOR JUMPER RESISTORS
DC 12V POWER LED
DC 5V POWER LED
FAN MOTOR
VANE MOTOR
REMOTE CONTROLLER BOARD
POWER SUPPLY
~(1 PHASE)
AC220-240V 50Hz
AC220V 60Hz
TB2
4FKSA
ON
OFF
1234 1234
SW18
OFF
ON
4321
SW17
OFF
ON
87654321
NAME
TB6
A01 B02
CN1
45231
CN2
321
BLU
BLU
BRN
ORN
YLW
MODELS
TB5
TB4
6
MV
12
3
2
1
RT2
2.5,3FKA
ON
SW7
OFF
TRANSMISSION WIRES
DC12V
2
1
3
TO OUTDOOR UNIT
2
CONNECTING WIRES
1
DC12V
R.B
RT1
CN2L
ROOM TEMPERATURE THERMISTOR
(0°C/15kΩ ,25°C/5.4kΩ DETECT)
INDOOR COIL THERMISTOR
(0°C/15kΩ ,25°C/5.4kΩ DETECT)
ADDRESS SELECTOR
EMERGENCY OPERATION SWITCH
MODEL SELECTOR
MODEL SELECTOR
ADDRESS SELECTOR
FUNCTION SELECTOR
TRANSFORMER
TERMINAL BLOCK (POWER SUPPLY)
TERMINAL BLOCK (INDOOR/OUTDOOR CONNECTING WIRE)
TERMINAL BLOCK (REMOTE CONTROLLER)
LINE TRANSMISSION TERMINAL BLOCK
FAN MOTOR RELAY
VARISTOR
NOTES:
1. Since the indoor fan motor (MF) is connected with 230, 240V power, using 220V power will require a setting change of the dip switch (SW7<I.B>) on the indoor
controller board as shown in fig :
fig w1
SW 7
2. Since the indoor transformer (T) is connected with 240V power, if 220,230V power is used. Change the wiring connection showing fig :
3. Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.
4. Indoor and outdoor connecting wires are made with polarities, make wiring matching terminal numbers.
5. Symbols used in wiring diagram above are, : Connector, / : Terminal block.
6. Emergency operation
[Check items]
(1) Make sure that no other trouble exist the outdoor unit. Trouble with the outdoor unit prevents emergency operation.
(2)Make sure that there is no trouble with the indoor fan.
[Emergency operation procedure]
(1)Set the dip switch (SW3<I.B>) on the indoor controller board to 1 on and 2 off for cooling and 1 - 2 on for heating.
(2)Turn on outdoor unit side circuit breaker, then indoor unit side circuit breaker.
(3)During emergency operation indoor fan runs at high speed but automatic vane remains stop.
(4)Thermostat will not function. Cold air blows out for defrosting during heating thus do not operate defrosting for along time.
(5)Emergency cooling should be limited to 10 hours maximum.
(6)After every operation, switch the fan connector to FAN1, and set all dip switches (SW3<I.B>) to OFF.
Indoor fan motor (MF) for 220V.
fig w2
When power supply is
If remote controller of microcomputer fails but there is no other trouble, emergency operation is possible by setting dip switch (SW3<I.B>) on the indoor
controller board.
(If any trouble exists the outdoor unit error code “P8” will be displayed on the remote controller and the trouble position will be shown on the outdoor controller
board LED. See electric wiring diagram of the outdoor unit for details.)
Emergency operation will be continuous operation mode due to power ON/OFF(ON/OFF with the remote controller is not possible).
Refrigerant flow in cooling
Refrigerant flow in heating
R.V. coil
Heating:ON
Cooling:OFF
Page 30
30
7
OPERATION FLOW-CHART
START
Power circuit
breaker
Check SW
ON twice
Operation SW
ON
“OFF” timer
“ON” timer
STOP
Set time
complete
Set time
complete
1
NO
NO
NONO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
w1
w2
w3
w4
w5
w7
w6
PROTECTION DEVICE
SELF HOLD RELEASE
Remote controller
indicator lamp OFF
Trouble STOP
Remote controller
operation display
Operating mode
(COOL)
Operating mode
(DRY)
Operating mode
(HEAT)
Operating mode
(FAN)
Auto COOL/HEAT
operation
COOL operation
DRY operation
HEAT operation
FAN operation
Trouble
PROTECTION DEVICE
SELF HOLD
Remote controller
trouble display
Indoor side
Outdoor side
Fan STOP
Compressor OFF
Fan STOP
Four-way valve OFF
MAIN OPERATION
w 1 In addition, the centralized and remote control can be operated.
w 2 The modes which indicate the sources of trouble are listed below.
● EO=Signal transmitting/receiving error
● P1=Room temperature thermistor malfunction
● P2=Indoor coil thermistor malfunction
● P4=Drain sensor malfunction
● P5=Drain over flow
● P6=Coil frost/overheat protection
● P7=System error
● P8=Outdoor unit trouble
w 3 The CHECK switch will show if an error has occurred in the past.
w 4 Fan runs on low speed for 1 minute in order to remove overheat air.
w 5 The 3-minute (6 minutes … heating mode) time-delay functions after compressor stops.
w 6 FAN or AUTO mode is selected by the indoor dip switch setting.
w 7 In FAN mode, fan speed and vane operation depend on the remote controller setting. (Compressor is OFF.)
Page 31
COOLING OPERATION
COOL operation
Four-way valve/OFF
NO
NO
NO
NO
Vane setting notch
Initial
COOLING
*8
60 deg downward angle
70 deg downward angle
Downward discharge
YES
Vane initial
setting
Vane
YES
Fan speed
LOW
YES
1 hour
Vane horizontal
airflow
*9
NO
Compressor
thermostat
ON
NO
Allowance
cancel
NO
YES
YES
NO
*11
YES
3-minute
time delay
time delay
3-minute
compressor operation
*10
Coil frost
prevention
Cooling area
NO
6-minute
NO
YES
NO
YES
NO
Allowance
period
NO
6 minute
time delay
Allowance set
YES
Coil frost protection
YES
10-minute
NO
compressor operation
Allowance cancel
Coil frost
protection
NO
16-minute
NO
compressor operation
YES
Indoor pipe
temperature is
1°C or lower
NO
Compressor ON
1
YES
YES
Compressor OFF
YES
Coil frost
prevention
Indoor coil
tempreature is
10°C or higher
YES
3-minute
time delay
Coil frost
prevention release
NO
NO
1 min continue
FAN speed
LOW
FAN speed
LOW 5 min
elapse
YES
NO
Outdoor unit
YES
trouble
w 8 When operation stops or changes to cooling or dry mode, the auto vane turns to a horizontal angle. IF operation changes
during auto vane SWING, the auto vane will continue to swing.
w 9 When operating TEST RUN, the thermostat will be continuously ON.
w10 After 3 minute compressor operation, if the indoor coil thermistor reads -15°C or below for 3 minutes, the compressor will
stop for 6 minutes.
w11 Cooling area : Indoor coil temperature is more than 5 degrees above the room temperature.
Heating area : Indoor coil temperature is more than 5 degrees below the room temperature.
FAN area : Indoor coil temperature is within 5 degrees either way of the room temperature.
31
Page 32
HEATING OPERATION
Heat operation
*15
Initial
NO
HEATING
Vane setting notch
*9
NO
YES
Vane initial setting
NO
Defrosting
NO
Four-way valve ON
Hor adjust
in process
NO
Compressor ON
NO
Compressor
thermostat ON
Allowance cancel
Indoor piping
-15°C or lower
Outdoor unit
FAN SPEED
Very low airflow
Compressor OFF
2
YES
trouble
1
YES
YES
YES
YES
3 min.restart
prevention
YES
6 min. restart
prevention
NO
Hot adjust start
FAN SPEED very low
Compressor ON
10-minute
NO
compressor
operation
Allowance caccel
*11
Heating
area
FAN STOP
*11
Ariflow area
20 min.elaspe
YES
Airflow area
Heating area
*11
Airflow area
Cooling area
Defrost operation
START
Four-way valve
OFF
YES
NO
YES
*11
YES
YES
*10
NO
Defrost
A
trouble
YES
NO
NO
YES
1
NO
NO
Heating area
30 min. elapse
Outdoor unit trouble
Outdoor unit
Defrost release
2
B
Indoor piping
55°C or lower
NO
Auxiliary heater
ON
YES
NO
Indoor piping
60°C or higher
YES
Auxiliary heater OFF
Overheat remote
START
Indoor unit
70°C or higher
YES
Allowance
period
YES
Overload protect
YES
NO
Auxiliary heater
thermostat ON
Auxiliary heater ON
NO
6-minute restart
prevention
Allowance set
Compressor OFF
YES
YES
FAN SPEED
Indoor piping
35°C or higher
NO
HOT adjust
6 min. elapse
YES
FAN SPEED
Low
FAN SPEED
Low 2 min.
elapse
YES
setting nitch
Hot adjust
release
A
PKH-FK
Type
3-minute
Auxiliary heater
OFF
Indoor coil
thermstor is 60°C
or higher
FAN speed
Low notti
YES
Airflow 10% up
B
NO
NO
NO
NO
NO
NO
FAN setting notch
Auto COOL/HEAT
operation
YES
>
T1 T0
=
YES
YES
After 15min.
T1<(T0-2)
NO
*16
NO
NO
YES
HEAT operation
NO
Initial mode
*17
COOL mode HEAT mode
COOL mode
NO
T1 < (T0 - 2)
COOL operation
NO
T1>(T0 + 2)
YES
NO
YES
Cool mode
set
1
After 15min.
T1>(T0 + 2)
HEAT operation
1
1
w15 (!) Until Low airflow is set while hot adjustment
(@) While defrosting (FAN STOP)
(#) When thermostat is OFF
In the case of(!), (@) and (#) above, airflow is horizontal regardless the VANE setting.
w16 When AUTO operation is started, COOL or HEAT mode is selected automatically.
w17 T1 : Room temperature.
To : Set temperature
32
Page 33
33
w 8 ~ 9 Refer to page 31.
w 12When room temperature is 18°C or below, the compressor cannot operate.
When room temperature rises over 18°C, the compressor starts after a 3-minute time delay.
w 13Compressor ON time is decided by room temperature. Refer to page 32.
w 14In dry operation, compressor ON makes the fan speed LOW and compressor OFF stops the fan.
It is not possible to set the fan speed with the remote controller
DRY OPERATION
DRY
operation
Four-way valve / OFF
Initial dry
operation
Room temperature is
18°C or lower
During
compressor ON
Compressor &
thermostat ON
Vane initial setting
Vane
setting notch
10-minute compressor
OFF timer start
Compressor OFF
Fan STOP
3-minute
time delay
10-minute
compressor
OFF
Compressor ON
time set
Compressor ON
Fan speed LOW
1
Compressor &
thermostat
ON
3-minute
compressor
operation
Compressor ON
time completes
NO
YES
NO
NO
YES
W
14
W
14
w
13
YES
YES
NO
YES
NO
NO
w
9
YES
YES
w
9
NO
NO
w
12
YES
NO
YES
w
8
Page 34
34
8
MICROPROCESSOR CONTROL
● Compressor and
outdoor fan : ONOFF
● Operation mode
change :COOLHEAT.
1. OUTLINE OF MICROPROCESSOR
● OFF-ON switching.
● COOL/DRY-AUTO-HEAT selector switching.
● Thermostat setting.
● TIMER mode selector-switching and Timer
setting.
● HIGH-LOW fan speed switching.
● AUTO Vane selector (AIR DISCHARGE)
switching.
● TEST RUN switching.
● CHECK mode switching.
(Self diagnostic trouble shooting)
● Room temperature thermistor (RT1)
● Indoor coil thermistor (RT2)
● Auto vane’s angle setting.
● Emergency stop.
● Compressor protection
device working
● Defrosting
START-STOP
● Fan speed control.
● Crankcase heater control
ON-OFF.
● Self diagnostic function
Independent Control of
Outdoor Unit
OUTPUT to indoor unit
INPUT from indoor unit
INPUT to remote controller
REMOTE CONTROLLER
● Processes and transmits
orders.
OUTPUT to remote controller
INDOOR CONTROLLER BOARD
● Receives orders from remote controller and
temperature data from indoor unit.
● Processes orders and data.
● Controls indoor and outdoor operation.
● Self diagnostic function.
w System control operation.
w Emergency operation.
w Set by dip switch on indoor controller board.
● Transmits the power to remote controller.
OUTPUT to outdoor unit
12VDC
Non-polar, two-wire cable
maximum length 500 meters
Signal
Remote controller
● LCD indicator
Polar three-wire cable
12VDC
123
1
2
3
Indoor
unit
Outdoor unit
FILTER
CHECK MODE
TEST RUN
241
Page 35
35
<How to operate>
1 Press POWER ON/OFF button.
2 Press the a button to display “ f ”.
3 Press the i TEMP. button to set the desired temperature.
NOTE: The set temperature changes 1°C when the or
button is press one time Cooling 19 to 30°C.
Minimum 3 minutes w1
ON
Thermostat
Indoor fan
Auto vane
Compressor
ON
LOW or HIGH
Initially 10 degrees
(Changeable by remote controller setting)
LOW or HIGH
ON
ON
OFF
OFF
CLOSECLOSE
OFF
OFF
Operation starts by
POWER button
ON.
Operation stops by
POWER button
OFF.
Room temperature
becomes equal to
set temperature.
Room temperature
rises above set
temperature.
<COOL operation time chart>
W1 Even if the room temperature rise above the set temperature during this period, the compressor will not start until this period has ended.
FILTER
CHECK MODE
TEST RUN
241
2. INDOOR UNIT CONTROL
2-1 COOL operation
(1) Compressor control
1 3-minute time delay
To prevent overload, the compressor will not start within 3 minutes after stop.
2 The compressor runs when room temperature is higher than set temperature.
The compressor stops when room temperature is equal to or lower than the set temperature.
3 The compressor stops in check mode or during protective functions.
4 Coil frost prevention to prevent indoor coil frost, the compressor will stop when the indoor coil thermistor (RT2) reads 1°C or
below after the compressor has been continuously operated for at least 16 minutes or more. When the indoor coil
temperature rises to 10°C or above, the compressor will start after a 3-minute time delay.
NOTE : By turning OFF the dip switch SW1-5, PKH-2.5/3/4 for J1-5 on indoor controller board, the start temperature of coil
frost prevention changes 1°C to -3°C.
5 Coil frost protection
When indoor coil temperature becomes -15°C or below, coil frost protection will proceed as follows.
<Start condition>
After the compressor has been continuously operated for 3 minutes or more,and the indoor coil temperature has been -15°C
or below for 3 minutes,the coil frost protection will start.
<Coil frost protection>
Compressor stops for 6 minutes, and then restarts.
If the start condition is satisfied again during the first 10 minutes of compressor operation, both the indoor and outdoor units
stop, displaying a check code of “P8” on the remote controller.
<Termination conditions>
Coil frost protection is released when the start condition is not satisfied again during the allowance, or when the COOL
mode stops or changes to another mode.
Page 36
36
(2) Indoor fan control
Indoor fan speed LOW/HIGH depends on the remote controller setting.
However, if an outdoor unit abnormality is detected, the indoor fan speed will be LOW, regardless of the remote controller
setting.
When the outdoor unit abnormality detection is released and the fan speed returns to the set speed, the quiet cycle control
will work.
(a) Normal control
( i ) Fan speed LOW/HIGH depends on the remote controller setting regardless of the thermostat ON/OFF.
(ii) Fan speed will remain on LOW if an abnormality in outdoor unit is detected. (5 minutes)
When the abnormality detection is released, the fan speed returns to the set speed.
1 Start-up of outdoor unit abnormality
detection.
2 Release of outdoor unit abnormality
detection.
3 Unit stop due to outdoor unit abnormality
with P8 indication.
NOTE 1 : Fan stops immediately if the unit stops or the check mode is started.
5 minutes
SET
LOW
1213
5 minutes
SET
LOW
OFF
Page 37
37
(3) Auto vane control
Auto vane position is set to 10 degrees airflow at the start-up of COOL operation. It can then be changed by the remote
controller.
(a) Stop mode (fixed operation)
( i ) At start-up of COOL operation, the auto vane is set to 10 degrees airflow direction.
( ii ) Discharge direction can be changed with button.
( i ) The vane motor turns ON when the SWING mode is selected.The vane motor is continuously ON during SWING mode.
<AUTO RETURN>
1 Fan speed : LOW
2 Fan speed : HIGH
When 60 degrees or 70 degrees airflow is selected with the LOW fan speed in COOL operation, “Auto RETURN” will appear
below the temperature display. One hour later, the airflow direction returns to 10 degrees automatically and “AUTO RETURN”
will disappear. If the airflow direction is set to 10 degrees during “AUTO RETURN” indication, the time counting for AUTO
RETURN is cancelled.
10°60°
70°
10°
60°
70°
30°
(SWING)
(SWING)
10°
60°
70°
10°
60°
70°
30°
AUTO
RETURN
AUTO
RETURN
Page 38
38
<Auto vane drive> (PKH-1.6FKA-E / PKH-2FKA-E)
(a) The auto vane is driven by a 2.5 rpm motor.
(b) Vane motor drive time
(c) Airflow direction is based on the horizontal position detected by the vane motor limit switch. When the horizontal position
can not be determined, the vane motor will remain ON until it is determined.
1
If the horizontal position still can not be detected, despite the 10minute detection, the vane motor will turn OFF
Remote controller indication continues.
2
After, if the vane motor receives the “auto vane ON” command again, it will restart detecting the horizontal position.
If the horizontal position still can not be determined, despite the 10-minute detection, the vane motor will turn OFF.
<Auto vane drive> (PKH-2.5FKA-E / PKH-3FKA-E / PKH-4FKSA-E)
(a) The vane is driven by DC12V motor.
(b) Airflow direction is selected depends on the number of pulse were sent.
(c) Before start driving the auto vane, detect the standard position first, output the number of pulse to each Airflow.
(d) The speed of the auto vane drive for both open and close are set at 200 pulse/sec.
(e) Method of driving the auto vane.
1
Detecting the standard position:
Output 1600 pulse to the opening direction.
2
Position setting:Output the number of pulse indicated no below chart to the closing direction.
(4) Detecting abnormalities in the outdoor unit
After the compressor has been continuously operated for 3 minutes, if the difference between the indoor coil temperature
and room temperature is out of RANGE C for 1 minute, the indoor fan speed will turn to LOW. Five minutes later, if the
difference is still out of
RANGE C,the outdoor unit is functioning abnormally. Thus, the compressor stops and check code “P8” appears on remote
controller.
RANGE A : Indoor coil temperature is more than 5 degrees above room temperature.
RANGE B : Indoor coil temperature is within 5 degrees either way of room temperature.
RANGE C : Indoor coil temperature is more than 5 degrees below room temperature.
1
10°
2
30°
3
60°
4
70°
Downward C → Horizontal 4→
1
Airflow direction change
Horizontal → Downward A1→
2
Downward A → Horizontal B 2→
3
Horizontal B → Downward C 3→
4
Rise 2.1
50Hz
0.65
6.7
0.65
Close
Horizontal
Downward A
Downward B
1600
The number of pulse output after
detecting the standard position
The drain pump works in COOL or DRY operation. When operation stops or changes to HEAT mode, the drain pump
continues to operate for 3 more minutes. The drain pump does not work in check mode.
<Drain sensor>
When both the drain pump and unit are operating, the drain sensor detects the temperature. This temperature tells whether
the drain water level is above or under the drain sensor. If the drain water level rises above the drain sensor due to a drain
pump malfunction, the unit will stop operating in order to prevent drain from overflowing. The check code “P5” on the
remote controller will display this occurrence. When both of the following conditions are satisfied, the drain sensor is
determined to be under water.
● Though the drain sensor has been heated by the drain sensor heater for more than 40 seconds, its temperature rise is
less than 20 degrees.
● The drain sensor temperature is below 63°C.
2-2 DRY operation
<DRY operation time chart>
w1 Even if the room temperature rise above the set temperature during this period, the compressor will not start until this period
has ended.
Minimum 3 minutes w1
ON
Thermostat
Indoor fan
Auto vane
Compressor
ON
(
PKH-2.5/3/4
)
wRefer to
page 40
for PKH-1.6/2
Initially 10 degrees discharge
(
Changeable by remote controller setting
)
LOW speedLOW speed
ON
ON
OFF
OFF
CLOSE
CLOSE
OFF
OFF
Operation starts by
POWER button
ON.
Operation stops by
POWER button
OFF.
Room temperature
becomes equal to
set temperature.
Room temperature
rises above set
temperature.
<How to operate>
1 Press POWER ON/OFF button.
2 Press the a button to display “ e ”.
3 Press the i TEMP. button to set the desired temperature.
NOTE: The set temperature changes 1°C when the or
button is press one time DRY 19 to 30°C.
FILTER
CHECK MODE
TEST RUN
241
Page 40
40
(1) Compressor control
13-minute time delay
To prevent overload, the compressor will not start within 3 minutes after stop.
2The compressor runs when the room temperature is higher than the set temperature.
The compressor stops when the room temperature is equal to or lower than the set temperature.
3The compressor stops in check mode or during protective functions.
4The compressor will not start when the room temperature is below 18°C.
The compressor starts intermittent operation when the power is turned ON with room temperature above 18°C. The
compressor ON/OFF time depends on the thermostat ON/OFF and the following room temperatures.After 3-minute
compressor operation,
● If the room temperature thermistor reads above 28°C with thermostat ON, the compressor will operate for 6 more
minutes and then stop for 3 minutes.
● If the room temperature thermistor reads 26°C—28°C with thermostat ON, the compressor will operate for 4 more
minutes and then stop for 3 minutes.
● If the room temperature thermistor reads 24°C—26°C with thermostat ON, the compressor will operate for 2 more
minutes and then stop for 3 minutes.
● If the room temperature thermistor reads below 24°C with thermostat ON, the compressor will stop for 3 minutes.
● If the thermostat is OFF regardless of room temperature, the compressor will stop for 10 minutes.
5Coil frost protection
Coil frost protection in DRY operation is the same as in COOL operation.
6Coil frost prevention
Coil frost prevention does not operate in DRY operation.
(2) Indoor fan control
<PKH-2.5FKA-E / PKH-3FKA-E / PKH-4FKSA-E>
The indoor fan runs on LOW speed during compressor operation. The fan speed cannot be changed with the remote
controller. Also, the indoor fan does not run during compressor OFF.
<PKH-1.6FKA-E / PKH-2FKA-E>
(a)During compressor OFF
● When the indoor coil temperature is 6°C or above, the indoor fan will stop.
● When the indoor coil temperature is below 6°C, the indoor fan will run in DRY mode.
(b)During compressor ON
● The indoor fan runs on EXTRA-LOW speed for the first 1 minute after the compressor is turned on.
● After, the indoor fan runs in DRY mode.
<Dry mode>
The fan notch is controlled by the indoor coil temperature every 30 seconds.
During compressor OFF, when the indoor coil temperature becomes 6°C or above, the indoor fan turns OFF
immediately.
(3) Auto vane & drain pump controls
Same as in COOL operation
(4) Detecting abnormalities in the outdoor unit
An abnormality in the outdoor unit can not be detected in DRY operation.
Indoor coil temperature
Below -10°C
-10 to 0°C
Above 0°C
Fan operation
LOW speed
EXTRA-LOW speed
Dry mode
Page 41
2-3 HEAT operation <How to operate>
1 Press POWER ON/OFF button.
2 Press the a button to display “ g ”.
FILTER
CHECK MODE
TEST RUN
3 Press the i TEMP. button to set the desired temperature.
NOTE: The set temperature changes 1°C when the or
button is press one time Heating 17 to 28°C.
<Display in HEAT operation>
[ DEFROST ]
The [ DEFROST ] symbol is only displayed during the defrost operation.
241
<HEAT operation time chart>
Operation starts by
POWER button
ON.
Thermostat
Indoor fan
Auto vane
Compressor
Power ON lamp
STAND BY lamp
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Room temperature
becomes equal to
set temperature.
LOW
Depends on remote
controller setting
Close
From POWER ON until
warm begins to blow
[ STANDBY ]
The [ STANDBY ] symbol is displayed from the time the heating
operation starts until the heated air begins to blow.
Room temperature
falls below set temperature.
Extra LOW *1Extra LOW *1
LOW or HIGHLOW or HIGH
Depends on remote
controller setting
10° Close
Minimum 3 minutes *2
Operation stops by
POWER button
OFF.
*1 Changeable by indoor
dipswitch SW1- 7
and SW1- 8.
(
PKH-2.5/3/4 for
J1-7,J1-8)
w
2 Even if the room temperature rise above the set temperature during this period, the compressor will not start until this period has ended.
(1) Compressor control
13-minute time delay
To prevent overload, the compressor will not start within 3, minutes after stop.
2The compressor runs when the room temperature is lower than the set temperature.
The compressor stops when the room temperature is equal to or higher than the set temperature.
3The compressor stops in check mode or during protective functions.
4Overheat protection
<Start condition>
When the indoor coil thermistor reads 70°C or above, the overheat protection will start.
<Overheat protection>
The compressor stops for 6 minutes, and then restarts.
If the start condition is satisfied again within 10 minutes of compressor operation, both the indoor and outdoor units stop,
displaying a check code of “P6” on the remote controller.
<Termination conditions>
Overheat protection is terminated when the start condition is not satisfied again during the allowance (10-minute
compressor operation), when operation mode changes to other mode, or when thermostat turns OFF.
41
Page 42
(2) Indoor fan control
(a) Normal control
(!)The indoor fan runs on EXTRA-LOW speed during the thermostat OFF.
EXTRA-LOW speed can be changed to LOW or HIGH speed by setting the dip switch SW1-7 and SW1-8,(PKH-
2.5/3/4 for J1-7, J1-8) If the indoor coil temperature becomes more than 5 degrees below the room temperature
during the thermostat OFF, the indoor fan will stop. After, when the indoor coil temperature becomes within 5
degrees of room temperature, the indoor fan will run on EXTRA-LOW speed.
(@)Hot adjustment is a warm-up for HEAT operation
<Start conditions>
The hot adjustment works under any of the following conditions.
● HEAT operation starts.
● Defrosting ends.
● Thermostat turns ON.[Hot adjustment]
Initially, the indoor fan runs on EXTRA-LOW speed. When 5 minutes have passed or the indoor coil temperature
exceeds 35°C, the fan speed changes to LOW. Two minutes later, the hot adjustment ends. Then, the fan speed
depends on the remote controller setting.
(#)The indoor fan stops when the indoor coil temperature is within 5 degrees either way of room temperature.
($)To eliminate the remaining heat, the indoor fan runs for the first 1 minute after the booster heater is turned OFF.
(3) Auto vane control
(a) STOP mode (fixed operation)
(!) The airflow direction at the start-up of HEAT operation is the same as that of the previous operation.
(@) The airflow direction can be charged by the remote controller setting.
In the following cases, airflow direction becomes 10° regardless of the remote controller setting.
1 During the hot adjustment with fan speed at EXTRA-LOW
2 During defrosting with indoor fan OFF
3 During the thermostat OFF
(b) SWING mode (Only for PKH-2.5FKA-E / PKH-3FKA-E / PKH-4FKSA-E)
(!) The vane motor turns ON when the SWING mode is selected.
The vane motor is continuously ON during SWING mode.
(@) In the following cases, the discharge direction is 10° regardless of the remote controller setting.
1 During the hot adjustment with fan speed at EXTRA-LOW
2 During defrosting with indoor fan OFF
3 During thermostat OFF
42
10°
30°60°
70°
(SWING)
(Only for PKH-2.5FKA-E / PKH-3FKA-E / PKH-4FKSA-E)
Page 43
(4) Detecting abnormalities in the outdoor unit
When the outdoor unit is determined to be abnormal by the following causes, the compressor will stop and the check code
“ P8 ” will appear on the remote controller display.
1 During compressor ON after hot adjustment
[1]If the difference between the indoor coil temperature and room temperature is in the RANGE B, the indoor fan will
stop.
[2]Within 20 minutes after entering RANGE B (except for the first 10 seconds),
a) If the temperature difference enters RANGE A, the hot adjustment starts,
b) If the temperature difference is still in RANGE B, the outdoor unit is deemed abnormal.
c) If the temperature difference enters RANGE C, defrosting starts.
Within 30 minutes after entering RANGE C,
●If the temperature difference does not return to RANGE B,the outdoor unit is deemed abnormal.
●If the temperature difference returns to RANGE B, the next 20 minutes is an allowance period. If the difference enter
RANGE A during the allowance, defrosting ends and the hot adjustment starts. If the difference does not enter
RANGE A during the allowance, the outdoor unit is deemed abnormal.
2 During compressor ON in hot adjustment
After 30 minutes of defrosting in hot adjustment, if the temperature difference is still in RANGE C, the outdoor unit is
determined to be abnormal.
3 During compressor OFF
After 20 minutes of thermostat OFF, if the indoor coil thermistor reads -25°C or below, the outdoor unit is determined to
be abnormal.
(5) Indoor coil thermistor abnormality detection
An abnormality can be detected during compressor ON, except for the following.
●For the first 30 minutes after the temperature difference between the indoor coil temperature and room temperature
enters the RANGE C.
●When the temperature difference enters the RANGE C until it moves to the RANGE B.
w1 (See the next page.)
(6) Defrosting operation
After the outdoor unit starts the defrosting operation, when the temperature difference between the indoor coil temperature
and room temperature gets out of RANGE A and into RANGE B, the indoor unit starts the defrosting mode. After the
outdoor unit stops the defrosting operation, when the temperature difference returns to the RANGE A, the indoor unit stops
the defrosting mode. While the indoor unit is in the defrosting mode, the indoor fan and the booster heater stop.
w1 RANGE A : Indoor coil temperature is more than 5 degrees above room temperature.
RANGE B : Indoor coil temperature is within 5 degrees either way of room temperature.
RANGE C : Indoor coil temperature is more than 5 below room temperature.
Indoor coil temperature
minus room temperature
(degree)
+5
0
-5
RANGE A
RANGE B
RANGE C
43
Page 44
44
(1) Initial mode
1 When AUTO operation starts after unit OFF.
● If the room temperature is higher than the set temperature, operation starts in COOL mode.
● If the room temperature is equal to or lower than the set temperature, operation starts HEAT mode.
2 When AUTO operation starts after COOL or HEAT operation, the previous mode continues.
(2) Mode change
1 HEAT mode changes to cool mode when 15 minutes have passed since the room temperature became 2 degrees above
the set temperature.
2 COOL mode changes to HEAT mode when 15 minutes have passed since the room temperature became 2 degrees
below the set temperature.
(3) Temperature range
AUTO operation is available under the outside air temperatures as follows.
Mode change (HEAT COOL)
When room temperature becomes2degrees above the set temperature,the operation mode can not be changed
for 15 minutes.
(degree)
To+2
To:Set temperature (19 28 )
To+1
To
To - 1
To - 2
Compressor
Start
HEAT modeHEAT mode
Mode change
15 minutes
15 minutes
Mininum 3 minutes
COOL mode
(COOL HEAT)
ON
OFF
-9 0 1020304046
-8.5
Cooling range
(Outside air temperature)
Heating range
-5
<How to operate>
1 Press POWER ON/OFF button.
2 Press the a button to display “ h ”.
3 Press the i TEMP. button to set the desired temperature.
NOTE: The set temperature changes 1°C when the or
button is press one time Auto 19 to 28°C.
●“AUTOMATIC” works to change by itself the
operation mode either to cooling or heating
according to the room temperature.
2-4 AUTO operation (Automatic COOL/HEAT change over operation)
FILTER
CHECK MODE
TEST RUN
241
Page 45
45
<How to operate>
To change the airflow direction, press button.
(1) COOL/DRY operation
At the start-up of COOL or DRY operation, the airflow direction in automatically set to 10°. After, it can be changed to
another direction with button on the remote controller.
<Auto return>
When 60° or 70° airflow is set with fan speed on LOW, “AUTO RETURN” appears below the room temperature display.
One hour later the direction changes to 10°, automatically and “AUTO RETURN” disappears.
(2) HEAT operation
At the start-up of HEAT operation, discharge direction depends on the setting of the last operation.
After, it can be changed to another direction with button. The discharge direction shifts to 10° regardless of the remote
controller settings under any of the following conditions.
● Thermostat OFF
● Defrosting
● Indoor fan speed EXTRA-LOW in hot adjustment
Available in COOL operation with fan speed on HIGH or
in HEAT operation.
Unavailable in DRY operation.
If fan speed changes from LOW to HIGH during 30°
downward airflow in COOL mode, the direction
automatically changes to 10°.
10˚
30˚
60˚
70˚
Swing
Changes by pressing
the button.
FILTER
CHECK MODE
TEST RUN
241
2-5 Auto vane control
Page 46
46
<Timer function>
AUTO STOP ·········The air conditioner stops after the set time lapses.
AUTO START ········The air conditioner starts after the set time lapses.
AUTO OFF ············Timer is not active.
<How to operate>
1. Press POWER ON/OFF button.
2. Press w button to select AUTO STOP or AUTO START.
3. Press q button to set desired time.
Time setting is in 1 hour units for up to 24 hours.
Each time HOURS button is pressed, set time increases by 1 hour.
When HOURS button is pressed and held, the set time increases
by 1 hour every 0.5 seconds.
4. To cancel the timer operation, press POWER ON/OFF button.
2-7 Test run
<Before test run>
● After installing, wiring, and piping the indoor and outdoor units, check for refrigerant leakage, looseness in power supply or
control wiring, and mistaken polarity.
● Use a 500-volt measure to check the resistance between the power supply terminal block and ground to make sure that it is
at least 1.0MΩ.
Attention : Do not use the air conditioner if resistance is less than 1.0MΩ.
This setting will stop the air conditioner in 8 hours.
With the lapse of time, time display changes in 1 hour units, showing remaining time.
<Timer setting example>
OFF
2-6 TIMER operation
FILTER
CHECK MODE
TEST RUN
241
TEST RUN
241
TEST RUN button
TEST RUN
Display
Remote controller
1
Turn on main switch.12 hours before proceeding to step 2 to allow
for crankcase heater operation.
2
Push the TEST RUN button twice and indication of TEST RUN will
be shown on the liquid crystal display.
4
Push button LOW/HIGH to check that the fan speed changes
properly.
6
After the check is finished leave the test run mode,push the power
ON/OFF button.
It can also be stopped by pushing the timer MODE button.
5
Check the operation of outdoor unit fans.This unit controls the
rotation speed and performance capacity of fans. In some cases,it
may rotate at low speed as the condition of outside air requires and
the speed will be kept unless the performance has become deficient.
Therefore,when the condition of outside air demands,there may be
such cases as the fan stops or rotates reversely.
Please note that these symptoms are not mulfunction.
3
Press the button to display ,COOL/DRY(or HEAT)to
confirm that cool (or warm)air is blown out.
(At heating operation,there may be a short delay before warm air
begins to blow out.)
*The above figure shows the state of TEST
RUN at cooling operation.
●When a TEST RUN is started,the timer shall be set to 2 hours. The unit will automatically turn off after 2 hours.
Page 47
47
(1) Indoor coil temperature code
During the test run, the indoor coil temperature code from 1 to 15 is displayed on the remote controller instead of room
temperature. The code should fall with the lapse of time in normal COOL operation, and should rise in normal HEAT
operation.
(2) Trouble during test run
● If the unit malfunctions during the test run, refer to section 10 in this manual entitled “TROUBLESHOOTING.”
● When the optional program timer is connected to the conditioner, refer to its operating instructions.
2-8 Emergency operation
When the remote controller or microprocessor malfunctions but all other parts are normal, emergency operation is started
by setting the dip switch SW3 on the indoor controller board.
<Before emergency operation>
1. Make sure the compressor and the indoor fan are operating normally.
2. Locate the defect with the self-diagnostic function. When the self-diagnostic function indicates “protective function is
working”, release the protective function before starting the emergency operation.
CAUTION: When the self-diagnostic function indicates a check code of “P5” (drain pump malfunction), DO NOT start the
emergency operation because the drain may overflow.
<How to operate>
1. For emergency cooling, set the dip switch SW3-1 to ON and SW3-2 to OFF.
For emergency heating, set the dip switch SW3-1,2 to ON.
2. Turn ON the outdoor unit breaker and then ON the indoor unit breaker.
Emergency operation will now start.
3. During emergency operation, the indoor fan operates on high speed, but the swing louvers and the auto vanes do not
operate.
4. To stop emergency operation, turn OFF the indoor unit breaker.
NOTE: The remote controller POWER ON/OFF button can not start/stop emergency operations.
CAUTION: Do not use emergency cooling for more than 10 hours, as the indoor coil may freeze.
Code
Indoor coil
temperature
Indoor coil
temperature
Thermistor
abnormality
Code
1
-40~1˚C
9
~45˚C
2
~10˚C~15˚C~20˚C~25˚C~30˚C
~90˚C
~35˚C~40˚C
101112131415
~50˚C
3
~55˚C
4
~60˚C
5
~70˚C
678
1 ON
1
2
1.2 ON
1
2
1-2 OFF
1
2
Emergency
cooling
Emergency
heating
Normal
operation
Microprocessor board
Page 48
2-9 Interlock with ventilation system (LOSSNAY)
Mr. SLIM/LOSSNAY interlock operation is available by using the optional parts listed below.
(1) System organization
Relay box (PZ-12RB-E)
Relay box
LOSSNAY
Mr. SLIM
Remote
controller
Power supply
LOSSNAY
Mr. SLIM
Remote
controller
LOSSNAY control switch (PZ-05SLB
Power
supply
2-E) LOSSNAY control switch
(PZ-05SLB
Remote display
adapter
(PAC-SA88HA-E)
2-E)
(2) LOSSNAY models connectable to Mr. SLIM are : LGH-15RS-E, LGH-50RS-E
LGH-25RS-E, LGH-80RS-E
LGH-35RS-E, LGH-100RS-E
(3) Reqired parts are:
● Relay box (PZ-12RB-E)…Contact capacity 10A
● Remote display adapter (PAC-SA88HA-E)…An optional part for Mr. SLIM
…
2-E)
● LOSSNAY control switch (PZ-05SLB
For LOSSNAY individual operation
(4) Operation
1LOSSNAY turns ON/OFF according to Mr. SLIM ON/OFF
2While Mr. SLIM is OFF, LOSSNAY individual operation is available by using the LOSSNAY control switch.
When Mr. SLIM turns OFF with the LOSSNAY control switch at ON, LOSSNAY will continue to operate.
(5) Wiring.
2When the LOSSNAY control switch is not used:1When the LOSSNAY control switch is used
Remote
controller
Power
supply
50Hz
220 240V
10m
Connecting wire
0.13mm or over
Connecting wire
solid wire,
1.6 or 2.0
(field supplied)
Circuit breaker
(field supplied)
L
N
PL
HIGH
N
LOSSNAY control switch
(PZ-05SLB
Insulation
is needed
2
Indoor controller
N
L
LOW
DAMPER
2-E)
Mr. SLIM
board
Connector
CN51
ORN
RED
BRN
GRN
YLW
Junction box
(field supplied)
Power supply
for Mr. SLIM
220 240V AC
Relay box
(PZ-12RB-E)
YLW
A
ORN
B
RED
L
WHT
N
RED
HIGH
N
WHT
LOSSNAY
Terminal
block
ORN
LOW
RED
HIGH
WHT
N
RED
DAMPER
ORN
DAMPER
WHT
Relay box
(PZ-12RB-E)
Terminal block
A B L N HIGH N
Mr.SLIM
CN51
8
7
4
6
2
5
3
1
12V DC
L
Power supply
220 240V AC
N
Circuit
breaker
NOTE: For further information, refer to the
LOSSNAY technical & service manual.
LOSSNAY
Terminal block
ORN
LOW
RED
HIGH
WHT
N
RED
DAMPER
ORN
DAMPER
WHT
48
Page 49
10
9
49
2-10 Dip switch and jumper connector functions
Each figure shows the initial factory setting.
[1] On remote controller board
(1) SW17(Address selector)
SW17-1 ~ 6) For address setting
SW17-7) When two remote controllers are used, this switch sets the controller function.
OFF: The remote controller is set as a main controller.
ON: The remote controller is set as a sub controller.
SW17-8) Switch for system back-up
OFF: Without back-up
ON: With back-up
(2) SW18 (Function selector)
SW18-1) Switch for timer
OFF: single day
ON: timer every day
SW18-2) Switch for filter sign
OFF: filter sign absent
ON: filter sign present
SW18-3) Switch for filter sign time setting.
OFF: 100 Hr
ON: 2500 Hr
SW18-4) Not yet used
[2] On indoor controller board
For PKH-1.6FKA-E / PKH-2FKA-E
(1) SW1 (Mode selector)
SW1-1) Switch that changes between FAN mode and AUTO mode.
OFF: Fan mode for models with heat pump.
ON: AUTO mode for models with heat pump.
SW1-2) Not for use
SW1-3) Switch for auto vanes.
OFF: Unit without auto vanes.
ON: Unit with auto vanes.
SW1-4) Not for use
SW1-5) Switch to change the temperature to start coil frost prevention.
OFF: -3°C(For previous special models)
ON: 1°C(For all current models)
SW1-6) Switch for set temperature adjustment in HEAT mode.
During HEAT operation, warm air collects near the ceiling. When the indoor unit is installed near the ceiling, the
temperature read by room temperature thermistor differs from the actual living-space temperature by about 4
degrees. Therefore, the room temperature read by room temperature thermistor must be lowered by 4 degrees.
OFF: 4-degree adjustment
ON: No adjustment
SW1-7) Switch for fan speed during thermostat OFF in HEAT operation.
OFF: EXTRA LOW
ON: LOW
SW1-8) Switch for fan speed during thermostat OFF in HEAT operation.
OFF: EXTRA LOW or LOW (set with SW1-6)
ON: LOW or HIGH (set with remote controller)
SW1-9) Switch for detecting abnormalities in the outdoor unit abnormality detection.
OFF: When an abnormality occurs, it is detected.
ON: Even if an abnormality occurs, it can not be detected.
SW1-10) Switch for auto restart function.
OFF: This function does not work.
ON: This function works.
8 7 6 5 4 3
2 1
ON
OFF
4 3 2 1
ON
OFF
1 2 3 4 5 6 7 8
OFF
ON
Page 50
50
(2) SW2 (Address selector)
(3) SW3 (Emergency operation switch)
(4) SW5 (Model selector)
(5) SW6 (Model selector)
(6) SW7 (Model selector)
Switch to set the output of phase-controlled indoor fan motor.
Address setting is available at any time.
The initial factory setting by is based on each capacity.
SW5-1) Power supply
SW5-2) OFF:For models with heat pump.
ON:For models without heat pump.
SW5-3) Not for use
SW5-4) This switch is unavailable for PKH-FK(S)A-E. Keep this switch at OFF.
Single controlTwin controlTriple control
SW6-1OFFON(Twin NO.1) ON(Triple NO.1)
SW6-2OFFON(Twin NO.2) ON(Triple NO.2)
SW6-3OFFOFFON(Triple NO.3)
SW6-4OFFOFFON
Service Ref.
SW7
PKH-1.6FKA-EPKH-2FKA-E
[3] On indoor controller board
For PKH-2.5FKA-E / PKH-3FKA-E / PKH-4FKSA-E
(1) J1 (Mode selector)
J1-1) Switch that changes between FAN mode and AUTO mode.
Provided: Fan mode for models with heat pump.
Not provided: AUTO mode for models with heat pump.
J1-4) Switch for drain pump (For optional parts)
Provided: The drain pump works in only COOL operation.
Not provided: The drain pump works in both COOL and HEAT operation.
J1-5) Switch to change the temperature to start coil frost prevention.
Provided : 1°C (For all current models)
Not provided: -3°C (For previous special models)
ON :230V/240V
OFF:220V
)(
Used in setting the unit-address for group control.
For further information, refer to page 68.
1456789
10
123456
ON
OFF
Normal operationFor emergency coolingFor emergency heating
12
ON
OFF
12
ON
OFF
12
ON
OFF
12
ON
OFF
3
12
ON
OFF
34
12
ON
OFF
34
12
ON
OFF
3
Page 51
51
J1-6) Switch for set temperature adjustment in HEAT mode
During HEAT operation, warm air collects near the ceiling. When the indoor unit is installed near the ceiling, the
temperature read by room temperature thermistor differs from the actual living-space temperature by about 4
degrees. Therefore, the room temperature read by room temperature thermistor must be lowered by 4 degrees.
Provided : 4-degree adjustment
Not provided : No adjustment
J1-7) Switch for fan speed during thermostat OFF in HEAT operation.
Provided : EXTRA LOW
Not provided : LOW
J1-8) Switch for fan speed during thermostat OFF in HEAT operation.
Provided : EXTRA LOW or LOW (set with J1-7)
Not provided : Low or HIGH (set with remote controller)
J1-9) Switch for detecting abnormalities in the outdoor unit abnormality detection.
Provided : When an abnormality occurs, it is detected.
Not provided : Even if an abnormality occurs, it can not be detected.
J1-10) Switch for auto restart function.
Provided : This function does not work.
Not provided : This function works.
(2) SW2 (Address selector)
Used in setting the unit-address for group control.
For further information, refer to page 66.
(3) SW3 (Emergency operation switch)
(4) J5 (Model selector)
J5-2) Provided:For models with heat pump.
Not Provided :For models without heat pump.
J5-4) This jumper is unavailable for PKH-FK(S)A-E.
(5) SW6 (Model selector)
(6) SW7
SW7-2) POWER SUPPLY
(7) J9 (Model selector)
J9-1) Not provided
J9-2) Provided
2-11 INDOOR FAN CONTROL
Indoor fan relay output.
(a) During fan ON
The indoor fan relay turns ON. One second later, the phase control will start.
(b) During fan OFF
The phase control turns OFF. One second later, the indoor fan relay will turn OFF.
Normal operationFor emergency coolingFor emergency heating
24
OFF: 220V
ON : 240V
)(
SW6-1
SW6-2
SW6-3
SW6-4
OFF
Single control
OFF
OFF
OFF
ON(Twin No.1)
Twin control
ON(Twin No.2)
OFF
OFF
ON(Triple No.1)
Triple control
ON(Triple No.2)
ON(Triple No.3)
ON
12
}
PKH-FK(S)A-E
PKH-2.5 / 3
PKH-4
123456
ON
OFF
1234
ON
OFF
12
ON
OFF
12
ON
OFF
12
ON
OFF
1234
ON
OFF
1234
ON
OFF
1234
ON
OFF
Page 52
52
3. OUTDOOR UNIT CONTROL
3-1 Outdoor fan control
The rotational frequency of outdoor fan is phase-controlled according to the outdoor coil temperature. This control allows the
cooling operation even with the low outside-air temperature and the heating operation even with the high outside-air
temperature.
3-2 Outdoor unit control
The outdoor unit turns ON/OFF the cooling/heating operation according to orders given from the indoor unit.
3-3 Protective functions
1 If an reversed-phase, an open phase, or an indoor controller abnormality is detected, the outdoor unit will stop operation and
the check mode will start. (For the check mode details, see page 57.)
2 If a protective function works, the compressor will stop running. Three minutes later, the compressor will restart. If the
protective function works again, the compressor will stop running and the check mode will start.
3 The protective function is memorized.
4 The memory is cleared when the POWER ON/OFF button on the remote controller is turned OFF. However, the check mode
display continues until the outdoor unit receives the “operation ON” command from the indoor unit.
Room temperature
becomes equal to set
temperature.
Room temperature
becomes different from
set temperature.
w1 If compressor restarts within 10 minutes, 4-way valve remains ON.
Page 53
53
(1) Start conditions
A. When all of the following conditions are satisfied, defrosting will start. However, when the bypass valve turns OFF,
defrosting starts 10 minutes later.
(a) More than seven minutes have passed since the compressor start-up.
(b) The outdoor coil thermistor reads -5°C or below.
(c) The outdoor fan motor output step is 100%
(d) Total time of compressor operation exceeds 30 minutes, and the outdoor coil temperature has fallen by 8 degrees or
more in comparison with that of 10 minutes after the compressor start-up.
NOTE: The outdoor coil temperature of 10 minutes after the compressor start-up is memorized until the defrosting
operation has ended.
B. When all of the following conditions are satisfied, defrosting will start.
(a) ~ (c) The same as above (a) ~ (c) in item A
(d) Total time of compressor operation exceeds “defrost interval”.
Further information on the defrost interval is described in (3).
C. After the total time of compressor operation exceeds the defrost interval, the thermostat repeats ON/OFF three times.
Two minutes after the fourth “ON” of the thermostat, if the outdoor coil thermistor reads -5°C or below and the fan output
output is 100%, defrosting will start.
NOTE: The count of the thermostat ON/OFF is cleared by the compressor-OFF command or defrosting start-up.
(2) During defrosting
● Even if the thermostat turns OFF, defrosting continues.
● The 4-way valve, bypass valve, outdoor fan, and indoor fan are OFF.
ON
Outdoor fan
Compressor
4-way valve
Bypass valve
Auto vane
Indoor fan
10 degrees discharge direction.
(Remote controller still displays set direction.)
Outdoor unit
Indoor unit
ON
CLOSE
ON
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
CLOSE
Defrosting
starts.
Defrosting
stops.
3-5 Defrosting in HEAT mode
<Defrosting time chart>
Page 54
54
(3) Defrost interval
The defrost interval time is determined as follows.
● Initial defrost interval is 50 minutes.
● The defrost interval after defrosting depends on the preceding defrosting time as shown below.
NOTE1:If the unit stops during defrosting , the next defrost interval will be 50 minutes.
NOTE2:If a protection function works for the first time during defrosting, the compressor will stop.
After a 3-minute time delay, defrosting will restart. In this case, a 3-minute time delay is included with the defrosting
time.
If the protection function works for the second time, the unit stops operation and displays the check code.
The next defrost interval will be 30 minutes.
NOTE3:When the defrosting has ended, the total time of the compressor operation is cleared off.
(4) Termination conditions
Defrosting finishes when any of the following conditions are satisfied.
1Defrosting has continued for 15 minutes.
2Outdoor coil thermistor reads 22°C or above for the first 75 seconds after defrosting start-up.
3Outdoor coil thermistor reads 8°C or above after the 75-second defrosting.
4Power ON/OFF button is turned OFF during defrosting.
3-6 Actuators
(1) Bypass valve control
<Cooling mode>
1When the unit stops due to the coil frost prevention, the bypass valve turns ON. When one hour has passed since the
compressor stopped, the bypass valve returns to OFF.
2When the compressor operates with the bypass valve at ON for more than 30 minutes, the bypass valve turns OFF.
3When the compressor stops with the bypass valve at OFF, the bypass valve turns ON and remains ON for three minutes.
<Heating mode>
1When the unit starts for the first time after the circuit breaker has been turned ON, or when it starts after the compressor
OFF of 30 minutes or more, if the outdoor coil thermistor reads 12°C or more, the bypass valve turns ON.
2When the high pressure switch (63H1) works, the bypass valve turns ON.
3When the bypass has been ON for 30 minutes:
● If the high pressure switch has already returned, the bypass valve turns to OFF.
● If not, the fan output step keeps 70 for three minutes. Meanwhile, if the high pressure switch returns, the bypass valve
turns OFF. Otherwise the normal fan control starts.
4When the operation mode changes or stops, the bypass valve turns ON and remains ON for three minutes.
<Defrosting operation>
1The bypass valve is OFF.
(2) Crankcase heater control
1With jumper wire J3
The crankcase heater is ON from when the power is turned ON until the compressor starts, and then turns ON one hour
after the compressor stops.
2Without jumper wire J3
The crankcase heater is ON from when the power is turned ON until the compressor starts, and repeats 1-hour ON and
1-hour OFF.
Defrosting operation timeNext defrost interval
3 minutes or below120 minutes
3 to 7 minutes80 minutes
7 to 10 minutes60 minutes
10 to 15 minutes40 minutes
15 minutes (Maximum)30 minutes
Page 55
55
3-7 Service functions
(1) Compulsory defrosting
1When all of the following conditions are satisfied, pressing SW2 starts the compulsory defrosting.
● During HEAT mode
● The compressor is ON.
● The outdoor coil temperature is being displayed by LED. (Outdoor controller board dip switch SW3-1 : OFF, SW3-2 :
ON)
● The outdoor coil thermistor reads 8°C or below.
2The operation state and the termination conditions of the compulsory defrosting are the same as those of the normal
defrosting. As an exception, the defrost interval after the defrosting completion is 50 minutes.
(2) Fixed fan-output
While the compressor is operating (except during defrosting) and the fan output step is indicated by LED, pressing SW2
fixes the fan output. The fixed fan-output can be released when any of the following conditions are satisfied.
1SW2 is pressed again.
2SW3 setting is changed.
3The compressor stops.
4Defrosting operation starts.
(3) Function of switches on the outdoor controller board
SW1: Clears the check code memory (push-button switch)
SW2: Switches the output state indication and the check code display (push-button switch)
SW3-1,2: Switches the output state indication items (dip switch)
For further information, refer to page 59.
(4) 100% fan output
Fan output is fixed to 100% by shorting the connector CN22. However, the fan stops during compressor OFF or defrosting.
Open-circuit of CN22 restarts the normal fan control.
(5) Time shortening
Short circuit of the connector CN21 shortens the time as follows
1Fan control period: 30 seconds → 3 seconds
2Three-minutes time delay function : 3 minutes → 3 seconds
3Max. time of defrosting : 15 minutes → 15 seconds
4Defrost interval : 30 ~ 120 minutes → 3 ~ 12 seconds
5Compressor ON/OFF time for bypass valve ON/OFF : 30 minutes → 3 seconds
6Compressor ON time to start other functions : x minutes → x seconds
7Crankcase heater operation : 1 hour → 6 seconds
Page 56
56
9TROUBLESHOOTING
SymptomCauseCheck points
The display “CENTRALLY
CONTROLLED” on remote
controller dose not
disappear.
1) Wrong address setting of remote
controller/indoor controller board.
2) Timer adapter is connected to the
remote controller.
3) Signal transmission error between
indoor unit and remote controller.
1) Check the address setting of remote controller
and indoor controller.
2) Make sure the timer adapter is used correctly.
3) 1 Turn another remote controller’s DIP SW17-
7 ON to make it sub controller.
2 Connect the sub controller to the unit, and
turn circuit breaker ON.
● If the display “centrally controlled”
disappears, replace the original remote
controller.
● If the display remains the same, replace the
When remote controller
POWER button is turned
ON, the check code
“EO”appears.
1) Signal transmission error between
indoor unit and remote controller
1) 1 Connect a sub remote controller.
2 Turn circuit breaker ON.
If the display “centrally controlled” remains,
replace the indoor controller board.
3 If the display disappears, turn the remote
controller POWER button ON and check as
follows.
When remote controller
POWER button is turned
ON, operating display
appears, but disappears
soon.
1) Short circuit of indoor/outdoor
connecting wire
2) Short circuit of transmission wire.
3) Short circuit of drain sensor heater
circuit.
4) Wrong operation of remote controller
due to noise wave emitted by other
appliances.
1), 2) Check the wire
3) Measure the resistance of the drain sensor
connector CN50 1 - 3. Normal resistance
should be 82Ω.
4) Turn the circuit breaker OFF, and then turn
ON.
If the remote controller remains abnormal,
despite the above measures, replace the indoor
controller board.
Despite turning POWER
button ON, the remote
controller display does not
appear.
1) Damaged remote controller.
2) Short circuit of transmission wire.
3) Bad contact of indoor CN40.
4) CN40 is attached to a sub unit.
5) Damaged transformer.
6) Bad contact of CN4T.
7) Blown fuse.
8) Circuit breaker OFF.
1) Measure the voltage between terminals of
remote controller. If no voltage, remove the
terminals and measure the voltage between
wires. If the voltage is between 6VDC and
12VDC, replace the remote controller.
2) ~ 8) Check each point.
If it is not defective, replace the indoor
controller board.
1.TROUBLE IN TEST RUN
Remote controller
1
2
3
4
Operating Display
Operating Display
No Display
No Display
Sub remote controller
EO Display
Operating Display
EO Display
Operating Display
Malfunction
Malfunction of
indoor Unit
Malfunction of
Remote controller
Malfunction of
indoor Unit and
Remote Controller
Malfunction of
Remote controller
Page 57
57
2. SELF DIAGNOSTIC FUNCTION WITH REMOTE CONTROLLER
2-1 When malfunction occurs during operation
When a malfunction occurs, the indoor and outdoor units stop and the malfunction is displayed on the LCD of the remote
controller.
(A) ON the set temperature display part, “CHECK” appears, and
the unit address and the check code are displayed alternately
at one-second intervals. (Check mode)
2-2 How to use the self diagnostic function for service
A. For normal control with one unit and one remote controller
(1) Pressing the CHECK button on the remote controller twice starts the self diagnostic function.
(2) During the self diagnostic function, “CHECK” appears at two positions on the remote controller display. Then, at least 10
seconds later, the unit address and the check code is alternately displayed at one-second intervals.
(3) Check and repair the unit according to the check code. (Refer to the next page.)
2-3 For group control using one remote controller
(1) Press the TEMP. button or TEMP. button on the remote controller to advance or go back to the unit
address. Each time TEMP. button is pressed, the unit address advances by one. Each time TEMP.
button is pressed, the unit address goes back by one.
The check code and the unit address, appear alternately.
(2) The check code “U8” means no malfunction has occurred since installation.
The check code “EO” means the following conditions:
● The unit address displayed on the remote controller does not apply to any unit.
● Power is not supplied to the unit.
● Signal transmitting / receiving circuit is abnormal.
(3) Check and repair the unit according to the check code. (Refer to the next page.)
(2) When one remote controller controls several units in the group control,
the LCD shows the unit address and check code of the first
malfunctioning unit.
(3) To cancel the check mode, press the [ON/OFF button. In remote
ON/OFF control, press the remote [ON/OFF switch. In centralized
control, turn OFF the [ON/OFF button of centralized controller.
NOTE: The latest check code is memorized, even if the check mode is cancelled by the way mentioned above. It takes
60 seconds maximum to display the memorized check code.
CHECK mode
CHECK button
Example
Check
code
Unit
address
Page 58
58
Check
code
Diagnosis of malfunctionCauseCheck points
EO
Signal transmitting/receiving
error
(Indoor controller does not
respond to remote controller
signal.)
During individual unit control
1) Bad contact of transmission
wire
2) Signal transmitting/receiving
circuit is abnormal.
1) Check the transmission wire.
2) Check with another remote controller. If “EO” is
still indicated, replace the indoor controller
board.
If other check code appears. replace the
original remote controller.
P3
Signal transmission error
(Remote controller does not
respond to indoor controller
signal.)
1) Bad contact of transmission
wire
2) Signal transmitting/receiving
circuit is abnormal.
3) Wrong operation due to noise
wave emitted by other
appliances
1) Check the transmission wire.
2) Check with another remote controller.
If “P3” is still indicated, replace the indoor
board.
If other check code appears, replace the
original remote controller.
3) Short-circuit between ① and ➁ of CN40 and
attach CN40 to the following units.
● Second unit in twin control
● Second and third units in triple control
● Sub units in group control
P4
Abnormality of drain sensor1) Bad contact of transmission
wire
2) Damaged thermistor
1) Check the connector.
2) Measure the resistance of the thermistor ➃ - ➄.
As for the normal resistance, refer to the case
of P1.
If the resistance is normal, replace the indoor
controller board.
P5
Malfunction of drain pump1) Malfunction of drain pump
2) Damaged drain sensor
1) Check the drain pump.
2) ● Check the drain sensor.
● Check the drain sensor heater. Normal
resistance should be 82Ω.
If the resistance is normal, replace the indoor
controller board.
P6
Coil frost protection is
working.
1) Short cycle of air cycle
2) Dirty air filter
3) Damaged fan
4) Abnormal refrigerant
1) Clear obstructions from the air cycle.
2) Clean the air filter
3) Check the fan.
4) Check the refrigerant temperature.
P7
System error1) Wrong address-setting
2) Signal transmitting/receiving
circuit of remote controller is
abnormal.
3) Wrong SW6-setting
1) Check the address-setting.
2) Check with another remote controller. If check
code other than “P7” appears, replace the
original remote controller.
3) Check SW6 setting.
P8
Abnormality in outdoor unit1) Wrong wiring of indoor/outdoor
connecting wire
2) Reversed phase
3) Protection device is working
4) Damaged outdoor coil
thermistor
1) Check the indoor/outdoor connecting wire.
2) Change the connection of electric wiring.
3) Check the protection device.
4) Measure the resistance of the outdoor coil
thermistor. If the resistance is normal, replace
the outdoor controller board.
P1
P2
Abnormality of room
temperature thermistor (RT1)
Abnormality of indoor coil
thermistor (RT2)
1) Bad contact of thermistor
2) Damaged thermistor
1) Check the thermistor.
2) Measure the resistance of the thermistor.
Normal resistance should be as follows.
0°C···15kΩ30°C ····4.3kΩ
10°C ·····9.6kΩ 40°C·····3.0kΩ
20°C ·····6.3kΩ
If the resistance is normal, replace the indoor
controller board.
Page 59
59
3. SERVICE DATA INDICATION BY SWITCHES ON OUTDOOR CONTROLLER BOARD
Setting dip switches SW2 and SW3 on the outdoor controller board enables LED to show the output state and check code.
Output state is shown by LED lighting, and check code by blinking.
SW1 : Turning SW1 ON clears the check code. If SW1 is turned ON while the check code is blinking , the indication changes
to output state indication.
NOTE : SW1 is usually available independent of SW3 setting. As an exception, when the check code shows a
reversed phase or an open phase during the power-on-reset state, SW1 is not available.
SW2 : SW2 is turned ON by pressing, and OFF by releasing.
When SW3-1 and SW3-2 are OFF, pressing SW2 changes indication between output state and check code
alternately.
When SW2 is turned On with SW3-1 OFF and SW3-2 ON, the compulsory defrosting starts.
SW3 : Output state indication items depend on the combination of SW3-1 ON/OFF and SW3-2 ON/OFF.
Changed alternately by pressing SW2.
SW3-1
SW3-2
LED
Check code
OFF
OFF
Outdoor coil thermistor is
abnormal
Input circuit on controller
board is abnormal
Open phase
63H2 function
51C function
26C function
Overheat protection
Reversed phase
Blinking
Output state
OFF
OFF
OFF
Outdoor coil
temperature
(bit)
ON
1
2
4
8
16
32
64
128
1
2
4
8
16
32
64
128
256
512
1024
2048
4096
8192
16384
32768
ON
Fan output
step
(bit)
OFF
ON
Total time of
compressor
operation(Hr)
ON
Compressor ON command
from indoor controller
Heating operation command
from indoor controller
During 63H1 function
Compressor ON
Outdoor fan ON
4-way valve ON
Bypass valve ON
Crankcase heater ON
Lighting
LD1
LD2
LD3
LD4
LD5
LD6
LD7
LD8
Page 60
60
3-1 Outdoor coil temperature
To obtain data on the outdoor coil temperature, add the number of bits of lighting LED, and see the graph below to find the
temperature.
3-2 Fan output step
To obtain data on the fan output step, add the number of bits of lighting LED, and see the graph below to find the fan
rotational frequency.
1PUH-1.6/2VKA
PUH-4YKSA
<50HZ>
50
Fan output step (bit)
Fan rotational frequency (rpm)
100150200250
800
600
400
200
0
50
Fan output step (bit)
Type
Fan rotational frequency (rpm)
100150200250
800
600
400
200
0
Type
100
C
Temperature
80
60
40
20
0
0
(Open 8 bits)(Open 8 bits)(Open 219 bits)
(Short 238 bits)(Short 238 bits)(Short 38 bits)
Number of bits
50100150200255
-20
-40
2PUH-2.5VKA
PUH-3VKA/3YKA
<50HZ>
3-3 Total time of compressor operation
Compressor operation time is indicated in 256 hour units. To obtain the compressor operation time, add the hours of
lighting LED. During the compressor operation time indication, SW2 is not available.
3-4 Inspection code indication
When the inspection code is displayed twice during the normal operation, the operation changes to INSPECTION mode
automatically.
(On the first display of the inspection code, the mode changes to Restarting Protection Mode for 3 minutes and the
operation restarts after 3 minutes.)
W1) When the mode changes to INSPECTION by pressing the SW2 ¨ON¨, the operation will be continued if during
operation.
W2) When pressing except for the SW3-1 OFF and SW3-2 OFF, the mode changes to INSPECTION but the indication
code is not displayed.
W3) During the INSPECTION when the indoor controller operates OFF → ON of the compressor, output is displayed.
3-5 SW1 operation
The inspection code is deleted by operating the SW1 ¨ON¨ and also self-preservation is released, if during selfpreservation.
Or if while the inspection code is blinking, it changes output display.
Note) SW1 has no connection with the Dip SW3 setting and is available at any time. However, when the inspection code is
displayed initially (anti-phase, phase interruption), SW1 will be unavailable.
Page 61
61
Blinking
LED
Diagnosis of malfunctionCauseCheck point
LD1
Reversed phasePhases L1, L2, and L3are
connected improperly.
Check the power supply connection.
LD2
Open phase● Phase L2is open.
● Contact of protector, such as
thermal switch, opened when
power was turned on.
● Check the power supply.
● Check each protector.
LD3
Outdoor coil thermistor is
abnormal. (Open circuit or short
circuit)
● Outdoor coil thermistor is
broken.
● Thermistor was connected
incorrectly.
● Measure the resistance of the thermistor.
● Check the thermistor. If normal, replace the
outdoor controller board.
LD4
High pressure switch (63H2)
function
● 62H2 was badly connected.
● 63H2 was working.
● Check 63H2 and the outdoor fan motor.
● Check if refrigerant supply is low.
● Check if air cycle is short-cycled.
LD5
Thermal relay (51C) function● 51C was connected
incorrectly.
● 51C was working.
● Check 51C, the compressor, and power supply.
LD6
Thermal switch (26C) function. ● 26C was connected
incorrectly.
● 26C is working.
● Check 26C.
● Check if refrigerant supply is low.
● Check if the capillary tube is clogged.
LD7
Over heat protection ● The thermistor is broken.
● Coil temperature is over
67°C.
● Measure the resistance of the thermistor.
● Check the outdoor fan motor.
● Check if air cycle is short-cycled.
LD8
Input circuit of outdoor
controller board is abnormal.
● Pulse input is abnormal.● Replace the outdoor controller board.
Cause
1) Indoor/outdoor connecting wires are poorly connected.
(Refer to next page.)
2) Power supply is poorly connected.
3) Connector or transformer is broken.
4) Fuse (6A) in the outdoor controller board is blown.
Check points
1) Check the connecting wires.
2) Check the power supply.
3) Check connectors and transformers.
4) Check the fuse.
4. TROUBLESHOOTING ACCORDING TO CHECK CODE
5.WHEN OUTDOOR UNIT DOES NOT WORK
Page 62
62
6. WRONG WIRING ON SITE
6-1 Between remote controller and indoor unit
If the wire is disconnected between the remote controller and the indoor unit, nothing is displayed on the remote controller
when the POWER button is pressed. The beep sound will also not be heard.
6-2 Phenomenon due to wrong wiring between indoor and outdoor units
Wrong wiringMode
Thermostat
Phenomenon
OutdoorIndoor
1
2
3
1
2
3
COOL
OFFOperation stops.
ON
4-Way valve turns ON. 9 minutes later, check code “P8” appears
on remote controller display.
HEAT
OFF
Cooling operation. Several minutes later, check code “P8” appears
on remote controller display.
Vane motor does not work.
Limit switch does not work.
Connector is poorly connected.
Vane motor is poorly assembled.
Indoor controller board is damaged.
Unit stops after 5 to
20 seconds operation
Protection function is working.
Airflow display is OFF
and button does
not operate.
Indoor controller board
deems the auto vanes
are not attached to the
unit.
Horizontal angle can
not be detected.
In this case, remote
controller is normal.
Power ON/OFF button
is not available.
Beep sound is heard,
but display is turned
OFF.
Beep sound is not
heard, and display
remains OFF.
Indoor/outdoor
connecting wire is
connected incorrectly.
Indoor/outdoor
connecting wire shorts.
Compressor protector is
damaged.
Defroster is broken.
Remote controller is
damaged.
Transmission wire is
poorly connected
Transmission wire is
damaged.
Connector is poorly
connected.
Indoor terminal block is
poorly connected.
Remote controller
terminal block is poorly
connected.
Vane motor is damaged.
Vane motor relay is damaged.
Limit switch is damaged.
The size of the cam is wrong.
Refer to check code on remote controller display.
See page 58.
Indoor controller is
damaged.
Dip switch setting is
wrong.
Indoor controller is
damaged.
Vane motor is
damaged.
Vane motor limit switch
is poorly connected.
Auto vane is wired after
power is turned to ON.
Vane motor limit switch
is damaged.
Vane motor is
damaged.
Poorly connected
Disconnected
7. OTHER TROUBLES AND CAUSES
t
t
t
t
t
t
t
t
t
t
t
t
t
“CENTRALLY CONTROLLED” is displayed.
Page 64
64
Symptom
LOSSNAY control switch does not work.
LOSSNAY air speed can not be controlled in interlock
operation.
LOSSNAY control switch can not work during interlock
operation.
LOSSNAY control switch is effective only while Mr. SLIM is not
operating.
LOSSNAY fan speed is fixed to HIGH during interlock
operation.
LOSSNAY fan speed LOW/HIGH can be switched only during
LOSSNAY individual operation with the LOSSNAY control
switch.
Cause
For LOSSNAY, troubleshooting refer to the LOSSNAY technical & service manual.
8.MR. SLIM/LOSSNAY INTERLOCK OPERATION
<Symptoms that are not malfunctions>
If any of the following symptoms occur, they are not malfunctions.
Page 65
65
10SYSTEM CONTROL
1 Group control with
a single remote
controller
(See page 66.)
Unit
Remote
controller
UnitUnit
Many units, installed at different locations, can be started
and controlled with a single remote controller. The remote
controller can be mounted in a different location using a
non-polar two-wire cable, which can be extended up to
500m. A maximum of 50 units can be controlled with a
single remote controller. All units operate in the same
mode.
2 Both remote
ON/OFF and
individual controls
(See page 67.)
w Timer adapter
(PAC-SA89TA-E)
is needed.
Optional
adapter
Remote
ON/OFF
switch
Remote
controller
Relay box
Unit
All units can be turned on or off simultaneously using a
remote ON/OFF switch. Also, each unit can be controlled
individually by each remote controller. During remote
ON/OFF control, a message of “CENTRALLY
CONTROLLED” is displayed on the LCD of the remote
controller.
This is available for both one unit control and several units
control.
3 Individual control
by grouping
remote controllers
(See page 68.)
Unit
Remote
controller
UnitUnit
By grouping the remote controllers in one place, several
units installed at different locations can be controlled
individually, and operation conditions of all units are visible
without a special control board. The control method is the
same as that of the single unit with a single remote
controller.
4 Multiple remote
control display
(See page 69.)
w Multiple display
adapter
(PAC-SA88HA-E)
is needed.
Unit
Remote controll
display board
Remote
controller
UnitUnit
Several units can be controlled with a remote control
display board. Operation conditions of all the units are
visible with the remote control display board.
Individual control by each remote controller is also
possible.
5 Auto restart
function
(See page 69.)
Circuit breaker
Remote
controller
A unit can be started or stopped with the circuit breaker
on or off.
Remote controller is also available.
With this function, when the power is restored after power
failure, the unit will restart automatically. (However, when
the remote controller POWER ON/OFF button is OFF, the
unit will not start.)
1. VARIETY OF SYSTEM CONTROL FUNCTIONS
Page 66
66
2. GROUP CONTROL WITH A SINGLE REMOTE CONTROLLER
A maximum of 50 units can be started in order according to the dip switch settings
2-1 How to wire
(1) Connect the remote controller to the double terminal block
on the indoor controller board of the master unit (No.0 unit).
(See Figure 1.)
(2) Connect the double terminal block of the master unit to the
double terminal block of No.1 unit.
(3) Connect the double terminal block of No.1 unit to the double
terminal block of No.2 unit.
(4) Continue the process until all the units are connected with
two-wire cables. (See Figure 2.)
(5) Remove the connector CN40 from the indoor controller
board of each unit except the master unit. (See Figure 3.)
(6) Set the unit-address of each unit with SW2 on the indoor
controller board following the instructions below.
2-2 How to set unit-address
The unit-address also serves as a successive-start timer which
starts each unit at intervals of 1 second. If two or more units
have the same unit-address in a group control, operation stops
due to system error. Be sure to set SW2 correctly following the
instructions below.
(1) Each lever of SW2 shows the number as follows.
(2) Total number of levers turned to ON shows the address of
the unit.
For example, to set No.3 unit, turn ON SW2-1 and SW2-2.
(3) In this way, set from the. master unit to the last unit.
Do not forget to set the master (No. 0) unit.
2-3 Unit control
The remote controller can control all units ON/OFF, temperature,air flow, and swing louver. However, the thermostat in
each unit turns ON or OFF individually to adjust to the room temperature.
Unit address & start
delay in seconds.
SW2
Master (No. 0) unit
0
1
2
3
4
5
6
ALL OFF
No. 1 unit
1
1
2
3
4
5
6
1 ON
No. 2 unit
2
1
2
3
4
5
6
2 ON
No. 4 unit
4
1
2
3
4
5
6
3 ON
No. 8 unit
8
1
2
3
4
5
6
4 ON
No. 16 unit
16
1
2
3
4
5
6
5 ON
No. 32 unit
32
1
2
3
4
5
6
6 ON
Setting examples
To remote
controller
To next
unit
To next unit
The last unit
dose not have
this wire.
Next unit
electrical box
Master unit
electrical box
123LN
123
LN
Master
unit
No.1 unitNo.2 unitLast unit
2-wire cable
Figure 2
Figure 3
Indoor controller board ▼
Should be removed from
all units other than unit
No.0:(Master Unit)
Figure 1
1
2
3
4
5
6
SW2
CN40
Page 67
67
3. REMOTE ON-OFF AND INDIVIDUAL REMOTE CONTROLS
This method is available to control one unit or any number of units.
The following operations are available by connecting a relay, a timer adapter (PAC-SA89TA-E), and a remote ON/OFF switch
to the system. Timer adapter is an optional part. Other parts are available on the market.
(A) To start all units in order by remote ON-OFF switch
(B) To stop all units simultaneously by remote ON-OFF switch
(C) To switch between the remote ON-OFF control and the individual remote control
3-1 System
Figure 6 shows the case of three units.The same is the case with any number of units.
NOTE1 : Install the relay box where you can be serviced it easily.
NOTE2 : For control circuit wiring, use a wire of No. 14 AWG or a control cable according to the power supply of control
circuit.
NOTE3 : When the power supply of the control circuit is 220/240V AC,
● Do not connect the control circuit wire to the remote controller cable directly.
● Do not place the control circuit wire and the remote controller cable into the same conduit tube.
3-2 Basic wiring
Caution : Before starting all units simultaneously by the remote ON-OFF switch, be sure to connect a sequence-start timer
into the remote ON-OFF circuit. Otherwise, a rush of starting current may damage the power supply.
Remote
controller
power supply of
control circuit
Remote
ON/OFF
switch
2-wire
remote
controller
cable
Figure 6
Relay box
Timer adapter cables
Timer adapter
PAC-SA89TA-E
Power
supply
Remote
ON/OFF
switch
No.1 unit
relay box
No.2 unit
relay box
Next unit
T
X2X2
T
Glow switch or pilot lamp can be
combined to easily identify the
on-off mode of SW1 and SW2.
To
No.1
unit
To
No.2
unit
Timer adapter cables
Remote controller
T
X2
SW
1
SW2
T
X2
Page 68
68
w1 After all units start together, if SW2 is turned OFF, each unit can be individually stopped by each remote controller.
w2 After all units stop together, if SW2 is turned OFF, each unit can be individually started by each remote controller.
Grouping the remote controllers allows individual control and
centralized monitoring of units installed in different places without a
special control board.
Remote control cables are extendable up to 500m. When the cable
length exceeds 12m, use the double-insulated two-care cable such as
Belden 9407. Also, the cable thickness must be No. 22 AWG or above.
When gathering the power ON/OFF switches of air conditioners near
the remote controllers, you should also install the power ON/OFF
switch near each unit to prevent electric trouble during servicing.
4. INDIVIDUAL CONTROL BY GROUPING THE REMOTE CONTROLLERS
3-3 Switch function of remote ON-OFF switch
SW1
(Switches between
remote ON and OFF.)
ON
(Start)
OFF
(Stop)
All units start together.
Individual control is not available.
All units stop together.
Individual control is not available.
SW2
(Switches between remote ON-OFF and individual control)
ON
(Remote ON-OFF control)
Each unit can be controlled by each
remote controller.
Remote ON-OFF switch is not available.
OFF
(Individual control)
w1
w2
Remote
controller cable (2-core)
Remote controller
Page 69
69
5. MULTIPLE REMOTE CONTROL DISPLAY
You can control several units with a multiple remote control display,by
wiring an optional multiple display adapter (PAC-SA88HA-E) with relays
and lamps on the market.
5-1 How to wire
(1) Connect the multiple display adapter to the connector CN51 on the
indoor controller board.
(2) Wire three of the five wires from the multiple display adapter as shown
in the figure below.
6. AUTO RESTART FUNCTION
By setting the dip switch SW1-10 to ON, the air conditioner can be started/stopped by power supply ON/OFF.
If the air conditioner is OFF before the power failure, it will not start operation by power restore.
[Field supplied parts]
Relays:12V DC with rated coil power consumption below 0.9W.
Lamps:Matching to power supply voltage.
CN51
connector(5P)
GREEN
Power
supply
Electrical insulation is needed.
Wiring at the actual place
Optional multiple display
adapter
The maximumdistance between
indoor board and relay is 10m.
YELLOW
ORANGE
RED
BROWN
5
X1
X1
RL
GL
X2
X2
1
<Wiring >
Power
supply
Remote
controller
cable
Relay box
(Field supply)
Remote
controller
Remote
controller
Remote
controller
3wires
3wires
3wires
2wires
No.1 unitNo.2 unitNo.3 unit
Muitiple remote control
ON-OFF display
(Field supply)
(Operation check)
<System>
Power
supply
RL-1
GL-1
Multiple Remote Control Display
Multiple remote
controller adapter
connect to
the connector CN51
Relay box
5
X1-1
X2-1
1
<Wiring diagram>
RL-2
GL-2
RL-3
No.1 unit
GL-3
X1
X2
5
1
No.2 unit
X1
X2
5
1
No.3 unit
X1
X2
X1-2
X2-2
X1-3
X2-3
Remote controller
A
B
Brown
Red
Orange
Remote controller
A
B
Brown
Red
Orange
A : An optional timer adapter
B : A single-throw switch
For remote control, connect the optional timer adapter (PAC-SA89TA-E)
<Wiring>
Indoor controller board
CN51
Page 70
70
11DISASSEMBLY PROCEDURE
OPERATING PROCEDUREPHOTOS&ILLUSTRATION
Metal fixture
Screws
1. Removing the lower side of the indoor unit from the
installation plate
(1) Remove the 2 screws.
Hang the indoor unit hangers to the catches on the
installation plate.
Hanger of indoor unit
Catch of installation plate
2. Removing the right side panel
(1) Remove the 2 screws of the right side panel:one on the
bottom and the other on the upper right-hand side.
(2) Disconnect the connector from the adapter case.
(3) Sliding the right side panel to the right, pull it out toward
you.
Terminal cover
Electrical parts box cover
Connector
Connector
Indoor controller
board
Right side panel
3. Removing the indoor controller board
(1) Remove the right side panel.
(2) Remove the screw of the electrical parts box cover, and
remove the cover.
(3) Disconnect the connectors on the indoor controller board.
(4) To unhook the catches on the right-hand side of the indoor
controller board, pull the left-hand side toward you and lift
up the cover to the right. Then the indoor controller board
can be removed.
4. Removing the electrical parts box
(1) Remove the right side panel.
(2) Remove the screw of the electrical parts box cover, and
remove the cover.
(3) Remove the room temperature thermistor and the indoor
coil thermistor.
(4) Disconnect the vane motor connector on the indoor
controller board.
(5) Remove the 2 screws of the electrical parts box.
(6) Disconnect the connector of the heater lead wire
connector.
(7) Disconnect the connector of the fan motor lead wire.
(8) Remove the electrical parts box.
Figure 1
Figure 2
Photo 1
Photo 2
Indoor coil thermistor
Catches
Screws
Room temperature thermistor
Electrical parts
box
Electrical parts
box cover
Indoor controller
board
PKH-3FKA-E
Page 71
71
OPERATING PROCEDUREPHOTOS&ILLUSTRATION
(9) Remove the screws of the indoor controller board case,
and pull out the indoor controller board case.
Then the transformer and the capacitor and relay can be
serviced.
5. Removing the vane motor
(1) Remove the right side panel.
(2) Remove the screw of the electrical parts box cover, and
remove the cover.
(3) Remove the 2 screws of the vane motor, and remove the
motor from the shaft.
(4) Disconnect the vane motor connector on the indoor
controller board.
6. Removing the intake grills
(1) Remove the right side panel.
(2) To remove the left side panel, remove the screw on the
bottom and the screw on the upper left-hand side. (See
Figure 3.)
1. Press up this side of the left side panel to unhook the
catch on the panel from the catch on the unit.
2. Slide the left side panel to the left to remove the panel.
Note: Fix the unit to the metal fixture securely
(3) Remove the air filters.
(4) Hold and press the centre cover to remove.
(5) Remove the screws of the grills.
(6) Pull the lower side of the grill toward you and slide the
upper to the right to remove the grills.
7. Removing the drain pan
(1) Remove the left and right side panels.
(2) Remove the grills.
(3) Remove the electrical parts box cover.
(4) Loosen the drain hose band to remove.
(5) Remove the 3 screws of the drain pan, and slide the drain
pan toward you to remove.
Screws
Drain pan
Drain hose
band
Drain hose
Photo 6
Photo 5
Figure 3
Screws for grills
Slide to the
right
Grills
Left side panel
Screws
Vane motor
Indoor controller board
Relay
Photo 4
Photo 3
Transformer
Capacitor
Electrical parts box
Indoor controller
board case
Catch on the left side panel
Catch on
the unit
Page 72
72
OPERATING PROCEDUREPHOTOS
8. Removing the lineflow fan and the fan motor
(1) Remove the left and right side panels.
(2) Remove the grills.
(3) Remove the electrical parts box.
(4) Remove the drain pan.
(5) Loosen the screw that fixes the lineflow fan to the fan
motor. (See Photo 7. )
(6) Remove the 4 screws of the motor fixture, and remove the
fan motor and the motor fixture at a time (See Photo 8.)
(7) Remove the screws of the left and right motor supports,
and remove the motor supports and the fan motor. (See
Photo 9.)
(8) Remove the 2 screws on the left and right sides of the heat
exchanger, and pull the bearing support toward you. (See
Photo 11.)
(9) Remove the screw of the centre support, and remove the
support. (See Photo 10. )
Pull the left-hand side of the heat exchanger toward you,
FAN MOTOR
LINEFLOW FAN
RUBBER MOUNT
BEARING SUPPORT
SLEEVE BEARING
BEALING MOUNT
MOTOR SUPPORT
NOZZLE ASSEMBLY
LEFT ROTARY VANE
RIGHT ROTARY VANE
VANE MOTOR
DRAIN HOSE
INDOOR CONTROLLER BOARD
FUSE
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
FAN MOTOR CAPACITOR
INDOOR COIL THERMISTOR
TRANSFORMER
HEAT EXCHANGER
HEAT EXCHANGER
REMOTE CONTROLLER BOARD
DRAIN SOCKET
MOTOR COVER
GUIDE VANE
ARM
VANE SLEEVE
CENTER SUPPORT
CONTROLLER CASE
WATER SHIELD
CONTROL BOX COVER
TERMINAL COVER
REMOTE CONTROLLER CABLE
FAN GUARD (LEFT)
FAN GUARD (RIGHT)
REMOTE CONTROLLER COVER
VANE SLEEVE
ROOM TEMPERTURE THERMISTOR
Part number that is circled is not shown in the figure.
Page 76
76
ELECTRICAL PARTS
PKH-2.5FKA-E
PKH-3FKA-E
PKH-4FKSA-E
FAN MOTOR
FAN MOTOR
RUBBER MOUNT
RUBBER MOUNT
MOTOR BAND
MOTOR BAND
MOTOR LEG
MOTOR LEG
RIGHT LINEFLOW FAN
RIGHT LINEFLOW FAN
LEFT LINEFLOW FAN
LEFT LINEFLOW FAN
SLEEVE BEARING
SLEEVE BEARING
34
FILTER
CHECK MODE
TEST RUN
39
Page 77
Part No.
No.
10
R01 Z61 102
11
R01 KV5 102
12
13
R01 12G 529
14
R01 16G 529
15
R01 12G 223
16
17
R01 12G 002
18
R01 16G 002
19
R01 12G 621
20
R01 12G 063
21
R01 KV5 527
T7W 585 480
22
T7W 587 480
T7W 589 480
23
T7W 71J 310
24
T7W 520 239
25
26
27
T7W 509 716
28
T7W 517 716
29
R01 588 255
30
R01 576 255
31
T7W 50J 799
32
R01 06A 202
33
R01 22A 202
34
T7W 53J 200
35
R01 512 716
36
T7W 556 305
37
T7W 53J 675
38
T7W 71J 675
39
R01 08K 049
—
—
—
—
—
—
—
—
Part Name
Specification
BEARING MOUNT
BEARING MOUNT
BEARING BAND
CENTER SUPPORT
DRAIN PAN
DRAIN PAN
VANE MOTOR
GUIDE VANE
GUIDE VANE(WITH HANDLE)
ARM
AUTO VANE
AUTO VANE
CENTER COVER
JOINT SHAFT
DRAIN HOSE
HEAT EXCHANGER
HEAT EXCHANGER
HEAT EXCHANGER
INDOOR CONTROLLER BOARD
FUSE
250V 6.3A
CONTROLLER CASE
CONTROLLER COVER
TERMINAL BLOCK
TERMINAL BLOCK
3P(L/N/
3P(1/2/3)
TERMINAL COVER
FAN MOTOR CAPACITOR
FAN MOTOR CAPACITOR
RIGHT SIDE PANEL
LEFT SIDE PANEL
INTAKE GRILLE
INTAKE GRILLE
AIR FILTER
NOSE
NOSE
UNDER PLATE
UNDER PLATE
TOP PLATE
TOP PLATE
DRAIN SOKET
BACK PLATE
BACK PLATE
BOX ASSEMBLY
BOX ASSEMBLY
STRUCTURAL PARTS
PKH-2.5FKA-E
PKH-3FKA-E
PKH-4FKSA-E
11
1
5
7
6
3
108
2
Page 79
13OPTIONAL PARTS
1. REFRIGERANT PIPES
Service Ref. : PKH-1.6FKA-E/PKH-2FKA-E/PKH-2.5FKA-E/PKH-3FKA-E
Part No
Pipe length
Pipe size O.D.
Connection method
Service Ref. : PKH-4FKSA-E
Part No
Pipe length
Pipe size O.D.
Connection method
Note 1. How to connect refrigerant pipes.
Factory supplied optional refrigerant pipings contain refrigerant at the above atmospheric pressures. As long as the
connection takes no more than 5 minutes, no air will enter, and there will be no need for air purging. Remove the blind
caps and make the connections within 5 minutes. After the connections for the indoor and outdoor units are made,
open the stop valve on the outdoor unit to allow refrigerant gas to flow.
If piping length exceeds 5m,an additional charge of refrigerant is needed.
Note 2. The following main parts are contained in the optional refrigerant piping kit.
When using a program timer, PAC-SK65PT, a program timer adapter (PAC-825AD) is also needed.
Service Ref.
Part No
Model Name
PKH-1.6/2FKA-E, PKH-2.5/3FKA-E, PKH-4FKSA-E
PAC-SC32PTA(with set back function)
Program timer
2-1 Program timer specifications
Service Ref.
Part name
Part No.
Exterior dimensions (inch)
Installation
Type of clock
Clock accuracy
Display-Time
-Week
-Timer setting unit
Program cycle
Timer setting unit
No.of set points
Power rating
Set back function
2-2 Feature of program timer
(1) Daily timer function
Daily timer can be set in 30 minutes units for up to 24 hours.
Each unit can be set for unit ON, unit OFF, or setback operation.
(2) Setback operation (PAC-SK65PT)
Set back operation is useful for reducing running costs
e.g. At a hotel with a 24-hour system
8:00~23:00 Cooling operation with set temperature at 26°C
23:00~8:00 Setback operation with 2 degrees of setback
As shown in the chart on the right, the set temperature rises 2 degrees
automatically during the setback operation. When the setback operation
ends, normal operation will begin.
(3) Weekly timer function
Daily timer function can apply to each day of the week.
PKH-1.6/2FKA-E, PKH-2.5/3FKA-E, PKH-4FKSA-E
Program timer
PAC-SC32PTA
5-4/32 ✕ 4-23/32 ✕ 23/32(130✕120✕18mm)
Wall mount
Quartz
±50seconds/month at25°C
Liquid crystal display
Liquid crystal display
Liquid crystal display
24 hours
30minutes
48/day
5V DC ±5%(Supplyed by Remote Controller)
Provided
28˚C
˚C
26
8:00
Normal
operation
23:00
Setback
operation
8:00
Normal
operation
79
Page 80
80
2-3. How to connect program timer
(1) Install the program timer next to the remote controller the same way as the remote controller is installed.
(2) Connect the program timer and the remote controller with a 6-wire cable as shown in the figure below
2-4 Names and functions
<PAC-SC32PTA>
3. TIMER ADAPTER
This adapter is needed for system control and for operation via external contacts. Adapter connection is described on page
59.
NOTE:While the program timer is connected to the remote controller, the 24hour
ON/OFF timer on the remote controller will not operate.
ORN1
2
3
BRN
RED
Part No.PAC-SA89TA-E
SET/MONITOR
SET
SMTWTF S
MONITOR
PROERAN TIMER
PAC-SC32PTA
TODAY
ON
WEEKLY
SETTING
OFF
ON
SET BACK
OFF
CLOCKDAILY TIMER
SET BACK
SET BACK
DAILY
SETTING
12 15 18 21 24
0361215
“MONITOR” :Indicates the current timer
setting. All switch expect MODE
SELECTOR SW are invalidated
then.This is the normal status.
“SET”: Set to “SET” mode for clock
adjustment, charge of week day, daily
and weekly timer setting.
Push SW to advance the time. Each time the button is
pushed the time advance by 1 minute, pushing continuously
advances by 1 minute at 0.5 second interval, and when the
lower digit of minute becomes 0 indication advances in 10
minutes unit.
SW is used for reversing the time. Each time the button is
pushed the time reverses by 1 minute, pushing continuously
reverses the time by 1 minute at 0.5 second interval, and when
the lower digit of minute becomes 0 indication reverses in 10
minutes unit.
Pushing SW moves the week day light
display in order of
S → M → T → W
…
enabling to set the week day.
Set back can be done in the range of 1,2,4,6
and 8°C.
WEEKLY TIMER SW
Used for setting timer in day of week unit.
DAILY TIMER SW
Used for timer setting in 30 minutes unit.
ON/SET BACK/OFF SW
Used to specify the time setting pattern.
SET BACK SETTING SW
Used for set back setting.
DAILY TIMER SETTING DISPLAY
24 hours is divided into 48 blocks and each
block express 30 minutes.
The block display consists of 3 pattern.
SET BACK DISPLAY
Indicates the setting set
back range.
CURRENT TIME DISPLAY
During MONITOR status,current
time is display.
During Daily timer setting, a
time desire for timer setting is
displayed.
WEEKLY TIMER SETTING DISPLAY
Used for selection of if or not the day
operation pattern set by PATTERN SETTING
is to be applied in weekly day unit, setting.
SET/MONITOR DISPLAY
During SET is display, clock adjustment,
change of weekly day, daily and weekly timer
setting can be performed.
During MONITOR is display, all switches
except SET/MONITOR SW are invalidated.
This is normal status.
WEEK DAY SETTING SW
Used for week day setting.
MODE SELECTOR SW
Using this switch select “MONITOR” or “SET”
Mode.
CROCK ADJUSTMENT SW
Used for adjustment of the current time.
SET/MONITOR
SET
SMTWTF S
MONITOR
PROERAN TIMER
PAC-SC32PTA
TODAY
ON
WEEKLY
SETTING
OFF
ON
SET BACK
OFF
CLOCKDAILY TIMER
SET BACK
SET BACK
DAILY
SETTING
12 15 18 21 24
0361215
FILTER
CHECK MODE
TEST RUN
4
2-wire cable
5-wire cable
To indoor unit
Connector CN1Connector CN1
Page 81
81
BACK
ACTIVE
BYPASS
POWER
ON/OFF
DUAL
CENTRAL
AHEAD
MITSUBISHI ELECTRIC
ENGAGED
GROUP
ACTIVE BYPASS
GROUP
SELECTION
PROGRAM
TIMER
CONTROLLER
OPERATION
DUAL CENTRAL
12345678910
4. MULTIPLE REMOTE CONTROLLER ADAPTER
This adapter is needed for remote indication (operation/check). Adapter connection is described on page 84.
5. CENTRALIZED REMOTE CONTROLLER
Allows individual or combined control of up to 16 units. When using the PAC-805RC, the program timer adapter (PAC825AD)is also needed. See page ##.
5-1. DimensionsUnit : mm
5-2. Functions
Part No.PAC-SA88HA-E
Part No.PAC-805RC
"ENGAGED" indicator
When this indicator is lit, transmission is in
progress and all switches are inoperative.
DUAL/CENTRAL switch
This change-over switch governing the
operation of the accessory remote
controller.
"DUAL"
Instructions from both the accessory
remote controller and the centralized
remote controller are valid. (Priority given
to the last instruction received.)
"CENTRAL"
ON/OFF switching by the accessory
remote controller is invalidated. Control is
by the centralized remote controller only.
Initial setting is "DUAL".
LCD Matrix Display
This display indicates the operational
status of all connected units either by
steady lighting or by flashing.
POWER ON/OFF switch
Operation ON/OFF switch.
▲BACK ▼AHEAD buttons
These buttons are used to designate
the attached unit(s). (They designate
the unit that is centrally controlled.)
●When group “00” is designated;
collective ON/OFF instruction is sent to
all units.
●When group “01”-“16“ is designated;
ON/OFF instruction is sent to the
designated units only.
ACTIVE/BYPASS switch
This is a change-over switch for the
program timer.
(It selects timer operation on the
program timer.)
Use “BYPASS” when a program timer
is not connected.
“ACTIVE”
The switch turns ON/OFF operational
instructions from the program timer
automatically.
“BYPASS”
ON/OFF Operation is by the
centralized remote controller only.
Initial setting is “BYPASS”.
Independent “DUAL / CENTRAL” and “ACTIVE / BYPASS” setting of all the groups is possible. When the power supply to the
centralized remote controller is cut due to power failure, all settings will return to original “DUAL” and “BYPASS”.
BACK
ACTIVE
BYPASS
POWER
ON/OFF
DUAL
CENTRAL
AHEAD
MITSUBISHI ELECTRIC
ENGAGED
GROUP
ACTIVE BYPASS
GROUP
SELECTION
PROGRAM
TIMER
CONTROLLER
OPERATION
DUAL CENTRAL
12345678910
117
117
BACK
ACTIVE
BYPASS
POWER
ON/OFF
DUAL
CENTRAL
AHEAD
ENGAGED
GROUP
ACTIVE BYPASS
GROUP
SELECTION
PROGRAM
TIMER
CONTROLLER
OPERATION
DUAL CENTRAL
12345678910
113
113
12
10 9 8 7 6 5 4 3 2 1
56.3
11
23.5
8
1
2
3
4
5
BRN
RED
ORN
YLW
GRN
Page 82
82
5-3 Connection method
(1) Connections in the power supply cord.
1. Connect the power supply cord to the power supply terminal-block and fix it in-place with a tie-wrap.
Connect a single phase 200V AV (220, 230, 240V) to AN.
As E is the GND terminal, be sure to ground the earth wire.
2. Connect the transmission line to the transmission terminal-block and fix it in-place with a tie-wrap. Use a Ø1.6
(AWG 14) or above two-wire cable for the transmission line.
CAUTION : Never connect the power supply cord to the transmission terminal-block.
(2) Connection method of centralized remote controller and power supply board.
1. Connect the centralized remote controller and power supply board with a non-polar, two-wire cable.
2. Wiring diagram
3. Be sure to set the maximum address number with the
dip switch SW17 on the centralized remote controller.
ANE
T
(Y)
(W)(R) (O)
(BR)
5A
A
POWER
SUPPLY
N
E
Fuse(5A)
Tie-wrap
Wiring has to be changed when
a 200,230 or 240V power is used.
Tie-wrap
TRANSFORMER
Transmission
TERMINAL-BLOCK
FOR TRANSMISSION
TERMINAL-BLOCK
OF POWER SUPPLY
200
220
230
240
BACK
ACTIVE
BYPASS
POWER
ON/OFF
DUAL
CENTRAL
AHEAD
ENGAGED
GROUP
ACTIVE BYPASS
GROUP
SELECTION
PROGRAM
TIMER
CONTROLLER
OPERATION
DUAL CENTRAL
12345678910
10 9 8 7 6 5 4 3 2 1
To adaptor's
terminal-block
Centralized remote
controller
Non-polar,
two-wire cable
To adaptor's
terminal-block
Power supply board box
Centralized
remote controller
Power supply
board
BACK
ACTIVE
BYPASS
DUAL
CENTRAL
10 9 8 7 6 5 4 3 2 1
POWER
ON/OFF
AHEAD
Dip switch
SW17
ENGAGED
GROUP
12345678910
GROUP
SELECTION
PROGRAM
ACTIVE BYPASS
DUAL CENTRAL
TIMER
CONTROLLER
OPERATION
Page 83
83
6. PROGRAM TIMER ADAPTER
This adapter is needed when a program timer(PAC-SC32PTA)or a centralized remote controller(PAC-805RC)is used.
6-1 Parts included
6-2 Connection method
Connection and wiring methods differ with the type of the indoor unit used. Confirm the type before carrying out the work.
Part No.PAC-825AD
(2) When the centralized remote controller is used, set the address number with the dip switch SW1 of the
1. Connect the power supply cord to the terminal-block and fix it in-place with a tie-wrap.
Connect a single phase 200V (220, 230, 240V) AV to AN.
As E is the GND terminal, be sure to ground the earth wire.
2. Connect the transmission line to the transmission terminal-block and fix it in-place with a tie-wrap (when a
centralized remote controller is being used).
CAUTION : Never connect the power supply cord to the transmission terminal-block
Fig-1Fig-2
TERMINAL-BLOCK
FOR
TRANSMISSION
Tie-wrap
Transmission cord
CN22
Dip switch
TRANS
CN1 CN21 CN51 CN30CN42 CN50 CN40
Fuse(5A)
TRANSFORMER
(AG)
SW1
ANE
POWER SUPPLY CORD
TERMINAL-BLOCK
FOR POWER
SUPPLY
Tie-wrap
Terminal block for
transmission to
program timer or
centralized remote
controller
Wiring has to be changed when 200V power supply is used.
(W)
CN22
TRANS
(B)
200
SW1
T
(Y)
240
220
5A
A
N
E
POWER
SUPPLY
Page 84
7. DRAIN PUMP(Only for PKH-2.5FKA-E / PKH-3FKA-E / PKH-4FKSA-E).
HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO100-8310 TELEX J24532 CABLE MELCO TOKYO
cCopyright 1999 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD
Issued in Sep. 1999. NO.OC190 541
Printed in Japan
New publication, effective Sep. 1999.
Specifications subject to change without notice
Part No.PAC-SE89DM-E
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