Toshiba RAV-SM1100UT-E User manual

R410A
FILE NO. A03-003
Revised Nov. 2003
SERVICE MANUAL
SPLIT TYPE
RAV-SM1100UT-E/RAV-SM1400UT-E
RAV-SM1100AT-E/RAV-SM1400AT-E
PRINTED IN JAPAN, Aug.,2003 ToMo
File No.A03-003 in the page of the following table has been changed,
and the portion is expressed as mark.
Revised page 2, 5, 7, 9, 10, 17, 24, 27, 40, 41, 63, 90, 93
Cord Heater Installation Work

– 2 –
CONTENTS
1. SPECIFICATIONS ................................................................................................ 3
2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) ................................................. 7
3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM ......................................... 9
4. WIRING DIAGRAM ............................................................................................ 11
5. SPECIFICATIONS OF ELECTRICAL PARTS ................................................... 13
6. INDOOR CONTROL .......................................................................................... 14
7. OUTDOOR CONTROL ...................................................................................... 24
8. TROUBLESHOOTING ....................................................................................... 29
9. REPLACEMENT OF SERVICE INDOOR P.C. BOARD ..................................... 56
10. SETUP AT LOCAL SITE AND OTHERS ........................................................... 60
11. ADDRESS SETUP ............................................................................................. 71
12. DETACHMENTS................................................................................................. 75
13. EXPLODED VIEWS AND PARTS LIST ............................................................. 90
ACCESSORIES ........................................................................................... APENDIX-1
CORD HEATER INSTALLATION WORK................................................... APENDIX-28

– 3 –
Model name
Standard capacity (Note 1) (kW)
Energy consumption effect ratio (Cooling)
Power supply
Electrical Running current (A)
characteristics Power consumption (kW)
Power factor (%)
Main unit
Appearance Ceiling Panel Model
(Sold separately) Panel color
Height (mm)
Main unit Width (mm)
Outer Depth (mm)
dimension
Ceiling panel
Height (mm)
Width (mm)
(Sold separately)
Depth (mm)
Total weight
Main unit (kg)
Ceiling panel
Heat exchanger
Fan
Fan unit Standard air flow High (Mid./Low) (m³/h)
Motor (W)
Air filter
Controller (Sold separately)
Connecting
Gas side (mm)
Liquid side (mm)
pipe
Drain port (Nominal dia.)
Sound level High (Mid./Low) (Note 2) (dB•A)
RAV-SM1100UT-E RAV-SM1400UT-E
Cooling Heating Average Cooling Heating Average
10.0 11.2 12.3 14.0
(2.2 – 11.2) (2.2 – 13.0) (3.0 – 13.2) (3.0 – 16.0)
2.84 3.22 3.03 3.01 3.50 3.26
1 phase 230V (220 – 240V) 50Hz
16.3–15.0 16.1–14.8 19.2–17.6 18.7–17.2
3.52 3.48 4.09 4.00
98 98 97 97
Zinc hot dipping steel plate
RBC-U21PG (W)-E
Moon-white (Muncel 2.5GY 9.0/0.5)
256 319
840 840
840 840
35
950
950
22 26
4.5
Finned tubu
Turbo fan
1680 1980
60 90
Attached ceiling panel
RBC-AMT21E
Ø15.9 (5/8”)
Ø9.5 (3/8”)
25 (Polyvinyl chloride tube)
39 36 33 42 38 34
1. SPECIFICATIONS
1-1. Specifications
1-1-1. Indoor Unit (4-Way Air Discharge Cassette Type)
Note 1 : The cooling capacities and electrical characteristics are measured under the conditions speciied by JIS B 8616 based
on the reference piping 7.5m.
Note 2 : The sound level is measured in an anechoic chamber in accordance with JIS B8616. Normally, the values measured in
the actual operating environment become larger than the indicated values due to the effects of external sound.
Note : Rated conditions Cooling : Indoor air temperature 27°C DB/19°C WB, Outdoor air temperature 35°C DB
Heating : Indoor air temperature 20°C DB, Outdoor air temperature 7°C DB/6°C WB

– 4 –
Model name
Appearance
Power supply
Type
Compressor Motor (kW)
Pole
Refrigerant charged (kg)
Refrigerant control
Standard length
Max. total length (m)
Pipe Over 20m
Height difference
Outdoor lower (m)
Outdoor higher (m)
Outer
Height (mm)
Width (mm)
dimension
Depth (mm)
Total weight (kg)
Heat exchanger
Fan
Fan unit Standard air flow High (m³/h)
Motor (W)
Connecting Gas side (mm)
pipe Liquid side (mm)
Protection device
Sound level High (Mid./Low) (dB•A)
(Note 2) (Cooling/Heating)
RAV-SM1100AT-E RAV-SM1400AT-E
Silky shade (Muncel 1Y8.5/0.5)
1 phase 230V (220 – 240V) 50Hz
(Power exclusive to outdoor is required.)
Hermetic compressor
2.0 3.75
4 poles
R410A 2.1 R410A 2.3
Pulse motor valve
20 (without additional charge)
50
Add 40g/m (Max. 1200g)
15
30
1340
900
320
75 85
Finned tube
2 propeller fans
6800 7500
63 + 43 63 + 63
Ø15.9 (5/8”)
Ø9.5 (3/8”)
Discharge temp. sensor
Over-current sensor
Compressor thermo.
53/54 53/54
1-1-2. Outdoor Unit
Note 1 : The cooling capacities and electrical characteristics are measured under the conditions speciied by JIS B 8616 based
on the reference piping 7.5m.
Note 2 : The sound level is measured in an anechoic chamber in accordance with JIS B8616. Normally, the values measured in
the actual operating environment become larger than the indicated values due to the effects of external sound.
Note : Rated conditions Cooling : Indoor air temperature 27°C DB/19°C WB, Outdoor air temperature 35°C DB
Heating : Indoor air temperature 20°C DB, Outdoor air temperature 7°C DB/6°C WB

– 5 –
20
18
16
14
12
10
0 204060
Compressor speed (rps)
80 100 120
8
6
4
2
0
Current (A)
020406080
Compressor speed (rps)
0
22
20
18
16
14
12
8
10
6
4
2
Current (A)
RAV-SM1100UT-ERAV-SM1100UT-E
RAV-SM1400UT-E
20
18
16
14
12
10
0 204060
Compressor speed (rps)
80 100 120
8
6
4
2
0
Current (A)
RAV-SM1100UT-ERAV-SM1100UT-E
Current (A)
020406080
Compressor speed (rps)
0
22
20
18
16
14
12
8
10
6
4
2
RAV-SM1400UT-ERAV-SM1400UT-E RAV-SM1400UT-E
• Conditions
Indoor : DB27˚C/WB19˚C
Outdoor : DB35˚C
Air flow : High
Pipe length : 7.5m
230V
• Conditions
Indoor : DB20˚C
Outdoor : DB7˚C/WB6˚C
Air flow : High
Pipe length : 7.5m
230V
• Conditions
Indoor : DB27˚C/WB19˚C
Outdoor : DB35˚C
Air flow : High
Pipe length : 7.5m
230V
• Conditions
Indoor : DB20˚C
Outdoor : DB7˚C/WB6˚C
Air flow : High
Pipe length : 7.5m
230V
1-2. Operation Characteristic Curve
RAV-SM1100UT-E
<Cooling> <Heating>
RAV-SM1400UT-E
<Cooling> <Heating>

– 6 –
50
55
60
65
70
75
80
85
90
95
100
105
32 33 34 35 36 37 38 39 40 41 42 43
Outsoor temp. (˚C)
Capacity ratio (%)
• Conditions
Indoor : DB27˚C/WB19˚C
Indoor air flow : High
Pipe length : 7.5m
0
10
20
30
40
50
60
70
80
90
100
110
120
-14-12-10-8-6-4-20246810
Outsoor temp. (˚C)
Capacity ratio (%)
• Conditions
Indoor : DB20˚C
Indoor air flow : High
Pipe length : 7.5m
1-3. Capacity variation ratio according to temperature
<Cooling> <Heating>

– 7 –
2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)
2-1. Indoor Unit
RAV-SM1100UT-E/RAV-SM1400UT-E
35˚
434.5
80
240
840 Unit external dimension
Ceiling
bottom
surface
Ceiling bottom surface
Hanging bolt
M10 or Ø3/8
(To be procured locally)
Refrigerant pipe connecting port
A
Take-in port of pipes
Refrigerant pipe connecting port
B
105 105
381.6
345.5
254.5
790 Hanging bolt pitch
950 Panel external dimension
860 to 910 Ceiling opening dimension
480
723 Hanging bolt pitch
Ceiling bottom
surface
Ceiling panel
(sold separately)
950 Panel external dimension
860 to 910 Ceiling opening dimension
Electric parts box
227
D
88
C
97
35
227
480
840 Unit external dimension
C97
105
105
Ø162
Ø162
130
105
250
270
70
30
173
113
45
105
130
210
Ceiling bottom surface
Knockout square
hole for divide duct
for Ø150
(2 positions)
Knockout square hole
for divide duct
For Ø150
Drain pipe
connecting port
SM1100UT
SM1400UT Ø12.7
Ø12.7
A
319
256
D
183
120
C
Ø15.9
Ø15.9
B
360
Standing
850 or less
Standing
640 or less
Surface
under ceiling
Drain up standing size
Indoor unit
57.5
25
64
188
57
Surface under ceiling
Z view
200
860 to 910 Recommended external size
200
860 to 910 Recommended external size
Check port
(¨450)
Check port
(¨450)

– 8 –
2-2. Outdoor Unit
RAV-SM1100AT-E/RAV-SM1400AT-E
Space required for service
350 625
314 307 400
161
60 27 27
60 90
58
95
60 67
154
706 715
900
600
60 4326
9029
50 108
89 25
1340
320
28
z
40 54
40
43
21 40
365 17.517.5
70 21
191 20
40 40
20
12
165
8060
32 45
46
86 7
58 7
Z view
Refrigerant pipe
connecting port
(Ø9.5 flare at liquid side)
Details of A legs Details of B legs
Mountig bolt hole
(Ø12 x 17 long hole)
Mountig bolt hole
(Ø12 x 17 U-shape hole)
B legs
Drain hole (Ø20 x 88)
Suction
port
Suction
port
Drain hole (Ø25)
Knockout(Drain)
Knockout(Drain)
Discharge port
A legs
Refrigerant pipe
connecting port
(Ø15.9 flare at gas side)
365
600
2-Ø12 x 17 U-shape holes
(For Ø8–Ø10 anchor bolt) Suction port
Discharge
port
Discharge
port
(Minimum
distance up to wall)
2-Ø12 x 17 long hole
(For Ø8–Ø10 anchor bolt)
500
or more
150
or more
150
or more
150 or more

–9 –
Standard
Cooling Overload
Low load
Standard
Heating Overload
Low load
Pressure
(MPa)
Pd Ps
3.3 0.9
3.0 1.0
1.0 0.8
2.5 0.6
3.3 1.1
1.8 0.2
Pipe surface temperature (°C)
Discharge Suction Indoor heat
Outdoor heat
exchanger exchanger
(TD) (TS) (TC) (TE)
88 10 8 38
88 14 14 46
30 8 8 3
90 4 50 2
83 17 54 13
80 –23 29 –20
Compressor
revolutions per
second (rps)
*
92
74
27
86
52
100
Indoor
fan
HIGH
HIGH
LOW
HIGH
LOW
HIGH
Indoor/Outdoor
temp. conditions
(DB/WB) (°C)
Indoor Outdoor
27/19 35/–
32/24 43/–
18/15.5 –5/–
20/– 7/6
30.– 24/18
15/– –20/ (70%)
3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM
3-1. Indoor Unit/Outdoor Unit
RAV-SM1100UT-E/RAV-SM1100AT-E
*4 poles are provided to this compressor.
The compressor frequency (Hz) measured with a clamp meter is 2 times of revolutions (rps) of the compressor.
Indoor unit
Outdoor unit
Outer diameter of refrigerant pipe
Gas side ØA Liquid side ØB
15.9mm 9.5mm
Distributor
(Strainer incorporated)
TCJ sensor
Air heat exchanger
Strainer
Strainer
TC sensor
Strainer
Refrigerant pipe
at gas side
Outer dia. ØA
Refrigerant pipe
at liquid side
Outer dia. ØB
Ball valve
Outer dia. ØA
Packed valve
Outer dia. ØB
Max.
50m
TS sensor Check joint
TD sensor
TO sensor
TE sensor
Distributor
4-way valve
(STF-0213Z)
Ø25 × L210
Ø25 × L180
Rotary
compressor
(DA220A2F – 20L)
Accumulator
(2500cc)
Heat exchanger Ø8
1 row 52 stages
FP1.3 flat fin
PMV
(UKV-25D22)
R410A 2.1kg
Cooling
Heating
Muffler

–10 –
Standard
Cooling Overload
Low load
Standard
Heating Overload
Low load
Pressure
(MPa)
Pd Ps
3.3 0.9
3.5 1.0
1.7 0.8
3.0 0.6
3.4 1.1
2.0 0.2
Pipe surface temperature (°C)
Discharge Suction Indoor heat
Outdoor heat
exchanger exchanger
(TD) (TS) (TC) (TE)
84 11 10 40
87 7 15 54
44 8 4 8
79 2 44 2
78 21 54 17
82 –21 36 –18
Compressor
revolutions per
second (rps)
*
56
54
27
60
24
73
Indoor
fan
HIGH
HIGH
LOW
HIGH
LOW
HIGH
Indoor/Outdoor
temp. conditions
(DB/WB) (°C)
Indoor Outdoor
27/19 35/–
32/24 43/–
18/15.5 –5/–
20/– 7/6
30.– 24/18
15/– –20/ (70%)
RAV-SM1400UT-E/RAV-SM1400AT-E
*4 poles are provided to this compressor.
The compressor frequency (Hz) measured with a clamp meter is 2 times of revolutions (rps) of the compressor.
Indoor unit
Outdoor unit
Outer diameter of refrigerant pipe
Gas side ØA Liquid side ØB
15.9mm 9.5mm
Distributor
(Strainer incorporated)
TCJ sensor
Air heat exchanger
Strainer
Strainer
TC sensor
Strainer
Refrigerant pipe
at gas side
Outer dia. ØA
Refrigerant pipe
at liquid side
Outer dia. ØB
Ball valve
Outer dia. ØA
Packed valve
Outer dia. ØB
Max.
50m
TS sensor Check joint
TD sensor
TO sensor
TE sensor
Distributor
4-way valve
(STF-0213Z)
Ø25 × L210
Ø25 × L180
Rotary
compressor
(DA420A3F – 21M)
Accumulator
(2500cc)
Heat exchanger Ø8
1 row 52 stages
FP1.3 flat fin
PMV
(UKV-25D22)
R410A 2.3kg
Cooling
Heating
Muffler

– 11 –
FM
TA
TC
TCJ
LM1,LM2
DP
FS
RY302
: Fan motor
: Indoor temp. sensor
: Temp. sensor
: Temp. sensor
: Louver motor
: Drain pump motor
: Float switch
: Drain control relay
NOTE
Color
Identification
BLK
BLU
RED
GRY
PNK
GRN
WHI
BRW
ORN
YEL
:
:
:
:
:
:
:
:
:
:
BLACK
BLUE
RED
GRAY
PINK
GREEN
WHITE
BROWN
ORANGE
YELLOW
1 2
1 2
1 1
2 2
3 3
TA
FS
CN104
(YEL)
CN34
(RED)
CN33
(WHI)
CN102
(RED)
CN101
(BLK)
1 2
1 2
TCJ
1 2
CN73
(RED)
1 2
CN70
(WHI)
12
CN80
(GRN)
1 2 3
1 2
TC
(EXCT)
1 1
2 2
3 3
4 4
5 5
1
2
3
4
5
1 1
2 2
3 3
4 4
5 5
1 1
2 2
3 3
4 4
5 5
5 5
4 4
3 3
2 2
1 1
1 1
2 2
3 3
4 4
5 5
1 1
2 2
3 3
4 4
5 5
LM2
FM
LM1
Motor
drive
circuit
Motor
drive
circuit
Power
supply
circuit
DC20V
DC15V
DC12V
DC7V
Fuse
F302
T3.15A
250V~
12
12
3
3
12
12
3
3 1 23
4
4
5
5
DP
CN333
(WHI)
CN334
(WHI)
CN68
(BLU) CN304
(GRY)
1 2
CN66
(WHI)
CN41
(BLU)
CN309
(YEL)
CN50
(WHI)
CN60
(WHI)
1
2
CN32
(WHI)
1
2
3
4
5
6
1
2
3
4
5
CN620
(BLU)
1
2
3
4
5
6
CN61
(YEL)
CN67
(BLK)
RED WHI BLK
BLK
BLK
BLK
P301
1 1
2 2 1 1
2 2
3
1
2
3
3B
A
(FAN DRIVE)
Wired Renote
Controller
CN1
(WHI)
WHI
BLK
1 1
2 2
Adapter for
Wireless Remote
Controller
WHI
BLK
MCC-1402
Control P.C. Board for
Indoor Unit
Indoor unit
earth screw
CN001
(WHI)
RY
302
Fuse
F301
250V~
T6.3A
RY
303
WHI
321
321
NL
Single phase
220 to 240V
50Hz
Serial
signal
Outdoor unit
earth screw
RED Closed-end
connector
4. WIRING DIAGRAM
4-1. Indoor Unit
RAV-SM1100UT-E/RAV-SM1400UT-E

– 12 –
4-2. Outdoor Unit
RAV-SM1100AT-E/RAV-SM1400AT-E
Color Identification
BLK
BLU
RED
GRY
PNK
GRN
:
:
:
:
:
:
BLACK
BLUE
RED
GRAY
PINK
GREEN
WHI
BRN
ORN
YEL
PUR
GRN/YEL : GREEN&YELLOW
:
:
:
:
:
WHITE
BROWN
ORANGE
YELLOW
PURPLE
6
5
4
3
2
1
6
5
4
3
2
1
PMV
IGBT MODULE
2
1
2
1
TH
CN600
2
1
2
1
3 3
2
1
2
1
3 3
2
1
2
1
3 3
TD CN600
CN06
CN04 CN03
250V~
T5A
FUSE
F300
CN300
CN301
CN800
2
1
2
1
3 3
TS CN605
2
1
2
12
1
2
1
2
1
TE CN604
2
1
2
1
TO CN601
CN606
CN500
ORN
ORN
THERMOSTAT
2
1
2
1
2
1
2
1
PNK
RED
3 3 3 3
BLU
4 4 4 4
WHI
5 5 5 5
BLK
BLU
YEL
2
1
22
1
2
1
CN05 CN04
ORN
CN13 CN01
CN02CN700
4-WAY
VALVE
2
1
2
1
2
1
2
1
RED
3 3 3 3
WHI
WHI
GRY
GRYWHI
WHI
WHI
BLK
RED
RED
GRN/YEL
4 4 4 4
5 5 5 5
BLK
2
1
2
1GRY
3 3 GRY
P13
P12
2
1
2
1
33
4 4
5 5
2
1
2
1
3 3
FUN
CIRCUIT
FM01 FAN MOTOR
CN302
CN303
CN702
2
1
2
1
33
4 4
5 5
2
1
2
1
3 3
FUN
CIRCUIT
SERIAL
COMMUNICATION
CIRCUIT
FM02 FAN MOTOR
SUB P.C. BOARD
(MCC-1398)
P.C. BOARD
(MCC-1438)
1
231
231
231
231
321NL
TO INDOOR UNIT
POWER SUPPLY
220-240V~
50Hz
CN01 CN02 CN03
T3.15A
250V~
F01 FUSE
RY700
REACTOR
2
1
2
1WHI
3 3 WHI
P09
P08
REACTOR
T25A
250V~
F01
FUSE
T02 CT
+
+
~ ~
–
–
~
~ ~
F02
FUSE
250V~
T25A
BLK
RED
ORN
BRN
P21
P24
P29
P28
P20
P19
P18
P17
RY01
SWITCHING
REGURATOR
BLU
YEL
F04
FUSE
250V~
T3.15A
RED
WHI
BLK
CN09 CN10 CN11
CM
COMPRESSOR

– 13 –
No.
1
2
3
4
5
6
7
8
9
10
11
Specifications
Output (Rated) 63 W
Output (Rated) 43 W
3 phase, 4P, 2000 W
6 mH, 18.5 A
10 kΩat 25°C
10 kΩat 25°C
10 kΩat 25°C
50 kΩat 25°C
T3.15 A, AC 250 V
25 A, AC 250 V
AC 220 – 240 V
ON : 90 ± 5°C, OFF : 125 ± 4°C
Parts name
Fan motor
Compressor
Reactor
Outdoor temp. sensor (To-sensor)
Heat exchanger sensor (Te-sensor)
Suction temp. sensor (Ts-sensor)
Discharge temp. sensor (Td-sensor)
Fuse (Switching power (Protect))
Fuse (Inverter, input (Current protect)
4-way valve solenoid coil
Compressor thermo. (Protection)
Type
ICF-140-63-2
ICF-140-43-2
DA220A2F-20L
CH-56
—
—
—
—
VHV-01AJ502E1
US-622
No.
1
2
Specifications
DC 12 V
Parts name
Motor-louver
Type
MP24GA
No.
1
2
3
4
5
6
7
8
9
10
11
Specifications
Output (Rated) 63 W
3 phase, 4P, 3500 W
6 mH, 18.5 A
10 kΩat 25°C
10 kΩat 25°C
10 kΩat 25°C
50 kΩat 25°C
T3.15 A, AC 250 V
25 A, AC 250 V
AC 220 – 240 V
ON : 90 ± 5°C, OFF : 125 ± 4°C
Parts name
Fan motor
Compressor
Reactor
Outdoor temp. sensor (To-sensor)
Heat exchanger sensor (Te-sensor)
Suction temp. sensor (Ts-sensor)
Discharge temp. sensor (Td-sensor)
Fuse (Switching power (Protect))
Fuse (Inverter, input (Current protect))
4-way valve solenoid coil
Compressor thermo. (Protection)
Type
ICF-140-63-2
DA420A3F-21M
CH-56
—
—
—
—
VHV-01AJ502E1
US-622
5. SPECIFICATIONS OF ELECTRICAL PARTS
5-1. Indoor Unit
RAV-SM1100UT-E/RAV-SM1400UT-E
5-2. Outdoor Unit
RAV-SM1100AT-E
RAV-SM1400AT-E
5-3. Accessory Separate Sold Parts
RBC-U21PG (W) E (Ceiling panel)
No.
1
2
3
4
5
6
Specifications
Output (Rated) 60 W
Output (Rated) 90 W
10 kΩat 25°C
10 kΩat 25°C
10 kΩat 25°C
Parts name
Fan motor
Thermo. sensor (TA-sensor)
Heat exchanger sensor (TCJ-sensor)
Heat exchanger sensor (TC-sensor)
Float switch
Drain pump motor
Type
SWF-230-60-1
(RAV-SM1100UT-E)
SWF-230-90-1
(RAV-SM1400UT-E)
155 mm
Ø6 mm, 1200 mm
Ø6 mm, 1200 mm
FS-0218-102
ADP-1409

– 14 –
Network adapter (Option)
Indoor control P.C. board (MCC-1402)
Display
LED
CPU
EEPROM
TA sensor
Display
LCD
Function setup
Key switch
#1 #3AB
Indoor unit
Main (Sub) master remote controller
Power
circuit
Fan motor
control
circuit
CPU
TMP88CH
47FG
(TMP88PH
47FG)
AC
synchronous
signal input
circuit
Serial
send/
receive
circuit
Run
Warning
Ready
Thermo. ON
Cool
Heat
Fan
Outside
output
Driver
Humidifier
relay output
Remote
controller
communication
circuit
CPU
H8/3039
Remote
controller
communication
circuit
Heater relay
output
TC sensor
TCJ sensor
Float input
Louver
motor
Drain
pump
Indoor
fan
motor
Transformer
Outdoor unit
123
123
Power circuit
DC5V
CPU
LCD
driver
Display
LCD
Function setup
Key switch
Weekly timer
Secondary
battery
DC5V
DC5V
*3
CN2 CN1
AB
123
Outdoor
unit
Same as
the left
*2
#2AB
123
Outdoor
unit
Same as
the left
*2
Max. 8 units are connectable.*1
*1 Max. 7 units when network adapters
are attached
*2 Network adapters are attached to only
one unit.
*3 Weekly timer is not connectable to the
sub remote controller.
Network adapter
P.C. board
(MCC-1401)
Remote
controller
communication
circuit
CPU
H8/3687
AI NET
communication
circuit
Central control
remote controller
(Option)
Power circuit
DC5V
Switch setup
Power
circuit
Power
circuit
Remote
controller
communication
circuit
Temporary
operation SW
Receive circuit Display LED
Buzzer
Function
setup SW
CPU
Sensor P.C. board (MCC-1418)
Wireless remote controller kit
Option Option
Optional only for 4-way air
discharge cassette type models
DC280V
X
Y
DC20V
DC12V
DC5V
6. INDOOR CONTROL
6-1. Indoor Control Circuit

– 15 –
No.
1
2
Item
When power
supply is reset
Operation mode
selection
Outline of specifications
1) Distinction of outdoor units
When the power supply is reset, the outdoors are
distinguished, and control is exchanged according to
the distinguished result.
2) Setting of speed of the indoor fan/setting whether to
adjust air direction or not.
(Only 4-way models)
Based on EEPROM data, speed of the indoor fan or
setting whether to adjust air direction or not is se-
lected.
1) Based on the operation mode selecting command
from the remote controller, the operation mode is
selected.
Remarks
Air speed/
Air direction adjustment
Remote controller
command
STOP
FAN
COOL
DRY
HEAT
AUTO
Outline of control
Air conditioner stops.
Fan operation
Cooling operation
Dry operation
Heating operation
• COOL/HEAT operation mode
is automatically selected by Ta
and Ts for operation.
1) Judge the selection of COOL/HEAT mode as shown
in the figure above.
When 10 minutes passed after thermostat had
been turned off, the heating operation (Thermo
OFF) is exchanged to cooling operation if Tsh
exceeds +1.5 or more.
(COOL OFF) and (COOL ON) in the figure indicate
an example.
When 10 minutes passed after thermostat had
been turned off, the cooling operation (Thermo
OFF) is exchanged to heating operation if Tsc
exceeds –1.5 or less.
2) For the automatic capacity control after judgment of
COOL/HEAT, refer to item 4.
3) For the temperature correction of room temperature
control in automatic heating operation, refer to item 3.
Ta : Room temperature
Ts : Setup temperature
Tsc : Setup temperature in
cooling operation
Tsh : Setup temperature
+ Room temperature
control temperature
compensation
+1.5
Tsc
or Tsh
-1.5
Ta
(˚C) COOL
(COOL ON)
(COOL OFF)
HEAT
6-2. Control Specifications

– 16 –
No.
3
Item
Room
temperature
control
Outline of specifications
1) Adjustment range Remote controller setup tem-
perature (°C)
Remarks
Wired type
Wireless type*
COOL/
DRY
18 to 29
18 to 30
Heating
operation
18 to 29
16 to 30
Auto
operation
18 to 29
17 to 27
*: Only for 4-way air discharge cassette type
2) Using the item code 06, the setup temperature in
heating operation can be compensated.
Setup data
Setup temp.
compensation
0246
+0°C +2°C +4°C +6°C
Automatic
capacity control
(GA control)
Setting at shipment
Setup data 2
1) Based on the difference between Ta and Ts, the
operation frequency is instructed to the outdoor unit.
1) Operation with (HH), (H), (L), or [AUTO] mode is
performed by the command from the remote controller.
2) When the air speed mode [AUTO] is selected, the air
speed varies by the difference between Ta and Ts.
<COOL>
HH > H > L > LLAir speed
selection
4
5
Shift of suction tempera-
ture in heating operation
• Controlling operation in case when thermo of remote
controller works is same as a case when thermo of
the body works.
• If the air speed has been changed once, it is not
changed for 3 minutes. However when the air volume
is exchanged, the air speed changes.
• When cooling operation has started, the air speed
selects a downward slope, that is, the high position.
• If the temperature is just on the difference boundary,
the air speed does not change.
• Mode in the parentheses indicates one in automatic
cooling operation.
+3.0
Ta (˚C)
E
D
C
B
F
G
A
HH
(HH)
H (HH)
H (HH)
L(H)
L(H)
L(H)
L(L)
+2.0
+2.5
+1.5
+0.5
Tsc
-0.5
+1.0

–17 –
F5 F4
47
42
F5
Tc
(˚C)
No.
5
Item
Air speed
selection
(Continued)
Outline of specifications
<HEAT>
Remarks
Value in the parentheses indicates one when thermostat of
the remote controller works.
Value without parentheses indicates one when thermostat
of the body works.
• If the air speed has been changed once, it is not
changed for 1 minute. However when the air speed is
exchanged, the air speed changes.
• When heating operation has started, the air speed
selects a upward slope, that is, the high position.
• If the temperature is just on the difference boundary, the
air speed does not change.
• Mode in the parentheses indicates one in automatic
heating operation.
• In Tc ≥60°C, the air speed increases by 1 step.
<Operation of duct only>
Tc: Indoor heat exchanger
sensor temperature
3) In heating operation, the mode changes to [UL] if
thermostat is turned off.
4) If Ta ≥25°C when heating operation has started and
when defrost operation has been cleared, it operates
with HIGH (H) mode or (HH) for 1 minute from when Tc
has entered in E zone of cool air discharge preventive
control (Item 6).
5) In automatic cooling/heating operation, the revolution
frequency of [HH] is set larger than that in the standard
cooling/heating operation. However the revolution
frequency is restricted in the automatic heating opera-
tion as shown in the following figure.
–1.0
Ta (˚C)
E
D
C
B
A
(-0.5) L(L)
L(H)
H(H)
H
HH
(HH)
(HH)
+1.0
(+0.5)
+2.0
(+1.0)
+3.0
(+1.5)
+4.0
(+2.0)
Tsh
(0)
[PRE-HEAT] display
Tap
F4
F5
F6
F7
F8
F9
FA
FB
FC
FD
Air volume setup
COOL, DRY, FAN HEAT
UH
H
H
M+ M+
M
M
L+
L+ L
L
UL
SM1100 SM1400
Revolutions per
minute (rpm)
530 660
510 660
500 620
470 570
450 520
440 510
410 470
390 430
380 420
320 370

– 18 –
(˚C)
32
30
28
26
20
16
Tc
Tcj HH
H
L
UL
OFF
E zone
D zone
C zone
B zone
A zone
5
2
A
J
K
I
(˚C)
A
B
L
N
M
(˚C)Tc
Tcj
No.
6
Item
Cool air
discharge
preventive
control
Outline of specifications
1) In heating operation, the indoor fan is controlled based
on the detected temperature of Tc sensor or Tcj sensor.
As shown below, the
upper limit of the
revolution frequency
is determined.
Remarks
In D or E zone, the priority
is given to setup of air
volume exchange.
In A and B zones,
[PRE-HEAT] is displayed.
1) The cooling operation (including Dry operation) is
performed as follows based on the detected tempera-
ture of Tc sensor or Tcj sensor.
When [J] zone is detected for 6 minutes (Following
figure), the commanded frequency is decreased from
the real operation frequency. After then the commanded
frequency changes every 30 seconds while operation is
performed in [J] zone.
In [K] zone, time counting is interrupted and the opera-
tion is held.
When [I] zone is detected, the timer is cleared and the
operation returns to the normal operation.
If the commanded frequency becomes S0 because the
operation continues in [J] zone, the return temperature
A is raised from 5°C to 12°C until [I] zone is detected
and the indoor fan
operates with [M] mode.
In heating operation, the freeze-preventive control
works if 4-way valve is not exchanged and the condition
is satisfied. (However the temperature for J zone
dashing control is changed from 2°C to –5°C.)
7
8
Freeze preven-
tive control
(Low tempera-
ture release)
Tcj : Indoor heat ex-
changer sensor
temperature
High-temp
release control
1) The heating operation is performed as follows based on
the detected temperature of Tc sensor or Tcj sensor.
• When [M] zone is detected, the commanded fre-
quency is decreased from the real operation fre-
quency. After then the commanded frequency
changes every 30 seconds while operation is per-
formed in [M] zone.
• In [N] zone, the commanded frequency is held.
• When [L] zone is detected, the commanded fre-
quency is returned to the original value by approx.
6Hz every 60 seconds.
Setup at
shipment
Same when thermostat is
turned off.
Control temp (°C)
AB
56 (54) 52 (52)
NOTE :
When the operation has started or when Tc or Tcj became
lower than 30°C after start of the operation, temperature is
controlled between values in parentheses of A and B.

– 19 –
No.
9
Item
Drain pump control
(For the duct, when
the drain-up kit
(sold separately) is
mounted)
Outline of specifications
1) In cooling operation (including Dry operation), the
drain pump is usually operated.
2) If the float switch operates while drain pump
operates, the compressor stops, the drain pump
continues the operation, and a check code is
output.
3) If the float switch operates while drain pump stops,
the compressor stops and the drain pump oper-
ates. If the float switch keeps operating for approx.
4 minutes, a check code is output.
Remarks
Check code [P10]
When heating operation stops, the indoor fan operates
with LOW mode for approx. 30 seconds.
10
11
After-heat elimina-
tion
All modes
• In group twin/triple operation, the swinging
positions can be set up collectively or individu-
ally.
3) When the unit stops or when a warning is output,
the flap automatically moves downward.
4) While the heating operation is ready, the flap
automatically moves upward.
1) Flap position setup
• When the flap position is changed, the position
moves necessarily to downward discharge
position once to return to the set position.
• The flap position can be set up in the following
operation range.
Flap control
(For 4-way air
discharge cassette
type only)
Warning :
A check code is displayed
on the remote controller,
and the indoor unit stops.
(Excluding [F08] and
[L31])
In cooling/dry operation In heating/fan operation
• In group twin/triple operation, the flap positions
can be set up collectively or individually.
2) Swing setup
• The swinging position can be moved in the
following operation range.

– 20 –
No.
12
Item
Frequency fixed
operation
(Test run)
Outline of specifications
<In case of wired remote controller>
1. When pushing [CHECK] button for 4 seconds or more,
[TEST] is displayed on the display screen and the
mode enters in Test run mode.
2. Push [ON/OFF] button.
3. Using [MODE] button, change the mode from [COOL]
to [HEAT].
• Do not use other mode than [COOL]/[HEAT] mode.
• During test run operation, the temperature cannot be
adjusted.
• An error is detected as usual.
• A frequency fixed operation is performed.
4. After the test run, push [ON/OFF] button to stop the
operation. (Display in the display part is same as the
procedure in item 1).)
5. Push [CHECK] button to clear the test run mode.
([TEST] display in the display part disappears and the
status returns to the normal stop status.)
<In case of wireless remote controller>
(Option for 4-way air discharge cassette type only)
1. Turn off the power of the set.
Remove the adjuster with sensors from the ceiling
panel.
2. Turn Bit [1: TEST] of sensor P.C. board switch [S003]
from OFF to ON.
Attach the sensor P.C. board cover and mount the
adjuster with sensors to the ceiling panel.
Turn on the power of the set.
3. Push [ON/OFF] button of the wireless remote controller
and set the operation mode to [COOL] or [HEAT] using
[MODE] button.
(During test run operation, all the display lamps of
wireless remote controller sensors flash.)
• Do not use other mode than [COOL]/[HEAT] mode.
• An error is detected as usual.
• A frequency fixed operation is performed.
4. After the test run, push [ON/OFF] button to stop the
operation.
5. Turn off the power of the set.
Turn Bit [1: TEST] of sensor P.C. board switch [S003]
from ON to OFF.
Mount the adjuster with sensors to the ceiling panel.
Remarks
1) The operation time of the indoor fan is calculated, the
filter reset signal is sent to the remote controller when
the specified time (2500H) has passed, and it is
displayed on LCD.
2) When the filter reset signal has been received from the
remote controller, time of the calculation timer is
cleared. In this case, the measurement time is reset if
the specified time has passed, and display on LCD
disappears.
13 Filter sign display
(Except wireless
type)
[FILTER] goes on.