TECHNICAL & SERVICE MANUAL
AWI 25 AHL + AEI 25 AH
AWI 35 AHL + AEI 35 AH
Destination: Europe
DC INVERTER SPLIT SYSTEM AIR CONDITIONER
Indoor Model No.
Product Code No.
Outdoor Model No. Product Code No.
AWI 25 AHL
38 703 0008
AEI 25 AH
38 703 0012
AWI 35 AHL
38 703 0009
AEI 35 AH
38 703 0013
Indoor Unit
Outdoor Unit
AIR CONDITIONER
AWI 25 AHL
AWI 35 AHL
AEI 25 AH
AEI 35 AH
IMPORTANT
These air conditioners employ new
refrigerant R410A.
Pay special attention when
servicing the unit.
W
When Transporting
IMPORTANT!
Please Read Before Starting
Be careful when picking up and moving the indoor and
outdoor units. Get a partner to help, and bend your
knees when lifting to reduce strain on your back. Sharp
edges or thin aluminum fins on the air conditioner can
cut your fingers.
This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an
important part of your job to install or service the system
so it operates safely and efficiently.
When Installing…
…In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the
unit’s weight. It may be necessary to construct a strong
wood or metal frame to provide added support.
…In a Room
Properly insulate any tubing run inside a room to prevent
“sweating” that can cause dripping and water damage to
walls and floors.
…In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide
a solid, level foundation for the outdoor unit. This prevents water damage and abnormal vibration.
…In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a
metal frame. Provide a suitable air baffle.
…In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher
than drifting snow. Provide snow vents.
For safe installation and trouble-free operation, you
must:
● Carefully read this instruction booklet before beginning.
● Follow each installation or repair step exactly as
shown.
● Observe all local, state, and national electrical codes.
● Pay close attention to all warning and caution notices
given in this manual.
WARNING
This symbol refers to a hazard or unsafe practice which
can result in severe personal
injury or death.
CAUTION
This symbol refers to a hazard
or unsafe practice which can
result in personal injury or
product or property damage.
If Necessary, Get Help
When Connecting Refrigerant Tubing
These instructions are all you need for most installation
sites and maintenance conditions. If you require help for
a special problem, contact our sales/service outlet or
your certified dealer for additional instructions.
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of
the flare and union tubes before connecting them,
then tighten the nut with a torque wrench for a leakfree connection.
• Check carefully for leaks before starting the test run.
In Case of Improper Installation
The manufacturer shall in no way be responsible for
improper installation or maintenance service, including
failure to follow the instructions in this document.
When Servicing
• Turn the power OFF at the main power box (mains)
before opening the unit to check or repair electrical
parts and wiring.
• Keep your fingers and clothing away from any moving
parts.
• Clean up the site after you finish, remembering to
check that no metal scraps or bits of wiring have been
left inside the unit being serviced.
SPECIAL PRECAUTIONS
WARNING
•
•
•
•
When Wiring
ELECTRICAL SHOCK CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH.
ONLY A QUALIFIED, EXPERIENCED
ELECTRICIAN SHOULD ATTEMPT TO
WIRE THIS SYSTEM.
Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked.
Highly dangerous electrical voltages are used in this
system. Carefully refer to the wiring diagram and
these instructions when wiring. Improper connections
and inadequate grounding can cause accidental
injury or death.
Ground the unit following local electrical codes.
Connect all wiring tightly. Loose wiring may cause
overheating at connection points and a possible fire
hazard.
Others
CAUTION
• Ventilate any enclosed areas when installing or testing
the refrigeration system. Escaped refrigerant gas, on
contact with fire or heat, can produce dangerously
toxic gas.
• Confirm upon completing installation that no refrigerant gas is leaking. If escaped gas comes in contact
with a stove, gas water heater, electric room heater or
other heat source, it can produce dangerously toxic
gas.
2
Table of Contents
Page
1. OPERATING RANGE ................................................................................................................
4
2. SPECIFICATIONS
2-1. Unit Specifications ............................................................................................................
2-2. Major Component Specifications......................................................................................
2-3. Other Component Specifications......................................................................................
5
7
11
3. DIMENSIONAL DATA................................................................................................................
12
4. REFRIGERANT FLOW DIAGRAM
4-1. Refrigerant Flow Diagram.................................................................................................
14
5. PERFORMANCE DATA
5-1. Temperature Charts..........................................................................................................
5-2. Air Throw Distance Charts................................................................................................
5-3. Operating Frequency Charts ............................................................................................
15
17
19
6. ELECTRICAL DATA
6-1. Electrical Characteristics ..................................................................................................
6-2. Electric Wiring Diagrams ..................................................................................................
23
24
7. INSTALLATION INSTRUCTIONS
7-1. Installation Site Selection .................................................................................................
7-2. Recommended Wire Length and Diameter ......................................................................
7-3. Remote Control Unit Installation Position .........................................................................
7-4. How to Test Run the Air Conditioner ................................................................................
7-5. Remove the Grille to Install the Indoor Unit......................................................................
26
28
29
30
31
8. MAINTENANCE
8-1. Address Setting of the Remote Control Unit ....................................................................
8-2. Disconnecting and Connecting Positive Connector for Outdoor Unit ...............................
32
33
9. FUNCTIONS
9-1. Operation Functions .........................................................................................................
9-2. Protective Functions .........................................................................................................
34
36
10. TROUBLESHOOTING...............................................................................................................
38
11. CHECKING ELECTRICAL COMPONENTS
11-1. Measurement of Insulation Resistance ............................................................................
11-2. Checking Continuity of Fuse on PCB Ass’y .....................................................................
43
44
12. REFRIGERANT R410A:
SPECIAL PRECAUTIONS WHEN SERVICING UNIT ..............................................................
45
APPENDIX
INSTRUCTION MANUAL ......................................................................................
3
52
1. OPERATING RANGE
Cooling
Heating
Temperature
Indoor Air Intake Temp.
Maximum
32°C D.B. / 23°C W.B.
Outdoor Air Intake Temp.
43°C D.B.
Minimum
19°C D.B. / 14°C W.B.
19°C D.B.
Maximum
27°C D.B.
24°C D.B. / 18°C W.B.
Minimum
16°C D.B.
–8°C D.B. / –9°C W.B.
4
2. SPECIFICATIONS
2-1. Unit Specifications
Indoor Unit
Outdoor Unit
AWI 25 AHL
AEI 25 AH
Power Source
220 – 240V Single-phase 50Hz
Voltage Rating
230
Performance
Capacity
Air circulation (High)
Moisture removal (High)
Electrical Rating
Available voltage range
Running amperes
Power input
Power factor
C.O.P.
Compressor locked rotor amperes
kW
BTU/h
Cooling
2.65 (0.9 – 3.2)
9,000 (3,100 – 10,900)
Heating
3.60 (0.9 – 5.0)
12,300 (3,100 – 17,100)
m3/h
Liters/h
480
1.6
530
—
Cooling
V
A
W
%
W/W
A
3.86 (1.28 – 5.88)
755 (250 – 1,150)
85
3.51
Package dimensions
Weight
Height
Width
Depth
Height
Width
Depth
Net
Shipping
Shipping volume
4.81 (1.21 – 6.47)
995 (250 – 1,340)
90
3.62
15
Features
Controls / Temperature control
Control unit
Timer
Fan speeds
Indoor / Outdoor
Airflow direction (Indoor)
Horizontal
Vertical
Air filter
Compressor
Refrigerant / Amount charged at shipment
g
Refrigerant control
Operation sound
Indoor: Hi / Me / Lo dB-A
Outdoor: Hi
dB-A
Refrigerant tubing connections
Max allowable tubing length at shipment
m
Refrigerant
Narrow tube
mm (in.)
tube diameter
Wide tube
mm (in.)
Refrigerant tube kit / Accessories
Dimensions & Weight
Unit dimensions
Heating
198 – 264
Microprocessor / I.C. thermister
Wireless remote control unit
ON / OFF 24 hours & Daily program, 1-hour OFF
3 and Auto / 1 (Hi)
Manual
Auto
Washable, Anti-Mold
Rotary (DC inverter)
R410A / 950
Electric expansion valve
34 / 31 / 28
34 / 31 / 28
46
47
Flare type
7.5
6.35 (1/4)
9.52 (3/8)
Optional / Air clean filter
Indoor Unit
285
825
189
350
900
255
9.0
11.0
0.080
mm
mm
mm
mm
mm
mm
kg
kg
m3
Outdoor Unit
548
720
265
600
856
362
34.0
36.0
0.186
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks: Rating conditions are:
Cooling: Indoor air temperature
Outdoor air temperature
Heating: Indoor air temperature
Outdoor air temperature
27°C D.B. / 19°C W.B.
35°C D.B. / 24°C W.B.
20°C D.B.
7°C D.B. / 6°C W.B.
5
Indoor Unit
Outdoor Unit
AWI 35 AHL
AEI 35 AH
Power Source
220 – 240V Single-phase 50Hz
Voltage Rating
230
Performance
Capacity
kW
BTU/h
m3/h
Liters/h
Air circulation (High)
Moisture removal (High)
Electrical Rating
Available voltage range
Running amperes
Power input
Power factor
C.O.P.
Compressor locked rotor amperes
Cooling
3.50 (0.9 – 3.8)
11,900 (3,100 – 13,000)
500
2.0
Heating
4.20 (0.9 – 5.8)
14,300 (3,100 – 19,800)
530
—
Cooling
Heating
V
A
W
%
W/W
A
198 – 264
5.21 (1.19 – 6.21)
1,090 (250 – 1,300)
91
3.21
15
Features
Controls / Temperature control
Control unit
Timer
Fan speeds
Indoor / Outdoor
Airflow direction (Indoor)
Horizontal
Vertical
Air filter
Compressor
Refrigerant / Amount charged at shipment
g
Refrigerant control
Operation sound
Indoor: Hi / Me / Lo dB-A
Outdoor: Hi
dB-A
Refrigerant tubing connections
Max allowable tubing length at shipment
m
Refrigerant
Narrow tube
mm (in.)
tube diameter
Wide tube
mm (in.)
Refrigerant tube kit / Accessories
Dimensions & Weight
Unit dimensions
Package dimensions
Weight
Height
Width
Depth
Height
Width
Depth
Net
Shipping
Shipping volume
5.48 (1.18 – 7.09)
1,165 (250 – 1,500)
92
3.61
Microprocessor / I.C. thermostat
Wireless remote control unit
ON / OFF 24 hours & Daily program, 1-hour OFF
3 and Auto / 1 (Hi)
Manual
Auto
Washable, Anti-Mold
Rotary (DC inverter)
R410A / 1,100
Electric expansion valve
36 / 33 / 29
34 / 31 / 29
47
49
Flare type
7.5
6.35 (1/4)
9.52 (3/8)
Optional / Air clean filter
Indoor Unit
285
825
189
350
900
255
9.0
11.0
0.080
mm
mm
mm
mm
mm
mm
kg
kg
m3
Outdoor Unit
548
720
265
600
856
362
35.0
37.0
0.186
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks: Rating conditions are:
Cooling: Indoor air temperature
Outdoor air temperature
Heating: Indoor air temperature
Outdoor air temperature
27°C D.B. / 19°C W.B.
35°C D.B. / 24°C W.B.
20°C D.B.
7°C D.B. / 6°C W.B.
6
2-2. Major Component Specifications
2-2-1. Indoor Unit
Indoor Unit
AWI 25 AHL
Control PCB
Part No.
Controls
Control circuit fuse
CB-KRV93EH (POW-KRV93GJH)
Microprocessor
250V 3.15A
Remote Control Unit
RCS-3HVPSS4E
Fan & Fan Motor
Type Fan / Fan motor
Q’ty … Dia. and length
mm
Fan motor model … Q’ty
No. of poles … Rough measure rpm (Cool / Heat)
Nominal output
W
Coil resistance (Ambient temp. 20°C)
Ω
Safety devices
Type
Operating temp.
Run capacitor
Flap Motor and Louver Motor
Type
Model
Rating
Coil resistance (Ambient temp. 25°C)
Heat Exchanger Coil
Coil
Rows
Fin pitch
Face area
Open
Close
Cross-flow / AC motor
1 … D92
IBH-884-066 … 1
4 … 1,200 / 1,250
30
BRN – WHT: 234
PNK (RED) – WHT: 209
—:
—
Thermal fuse
130
Automatic reclosing
1.2
440
°C
µF
VAC
Ω
Stepping motor
MP24Z3-12V
DC 12V
Each pair of terminals: 400 ± 7%
mm
m2
Aluminum plate fin / Copper tube
2
1.3
0.188
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
7
Indoor Unit
AWI 35 AHL
Control PCB
Part No.
Controls
Control circuit fuse
CB-KRV123EH (POW-KRV93GJH)
Microprocessor
250V 3.15A
Remote Control Unit
RCS-3HVPSS4E
Fan & Fan Motor
Type Fan / Fan motor
Q’ty … Dia. and length
mm
Fan motor model … Q’ty
No. of poles … Rough measure rpm (Cool / Heat)
Nominal output
W
Coil resistance (Ambient temp. 20°C)
Ω
Safety devices
Type
Operating temp.
Run capacitor
Flap Motor and Louver Motor
Type
Model
Rating
Coil resistance (Ambient temp. 25°C)
Heat Exchanger Coil
Coil
Rows
Fin pitch
Face area
Open
Close
Cross-flow / AC motor
1 … D92
IBH-884-066 … 1
4 … 1,250 / 1,250
30
BRN – WHT: 234
PNK (RED) – WHT: 209
—:
—
Thermal fuse
130
Automatic reclosing
1.2
440
°C
µF
VAC
Ω
Stepping motor
MP24Z3-12V
DC 12V
Each pair of terminals: 400 ± 7%
mm
m2
Aluminum plate fin / Copper tube
2
1.3
0.188
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
8
2-2-2. Outdoor Unit
Outdoor Unit
AEI 25 AH
Control PCB (A) / Control PCB (B)
Part No.
Controls
Control circuit fuse
CB-CRV93EH (POW-CRV93GJH)
Microprocessor
250V, 20A
Compressor
Type
Compressor model / Nominal output
Compressor oil … Amount
Coil resistance (Ambient temp. 20°C)
DC Rotary (Hermetic)
G4C090LU1ER / 600W
FV50S … 320
U – V: 0.81
V – W: 0.81
W – U: 0.81
cc
Ω
Safety devices
CT (Peak current cut-off control)
Compressor discharge temp. control
Operation cut-off control in abnormal ambient temp.
Run capacitor
µF
VAC
YES
YES
—
—
—
Crankcase heater
—
Fan & Fan Motor
Type … Fan / Fan motor
Q’ty … Dia.
mm
Fan motor model … Q’ty
No. of poles … Rough measure rpm (Cool / Heat)
Nominal output
W
Coil resistance (Ambient temp. 20°C)
Ω
Safety devices
Type
Operating temp.
Run capacitor on control PCB (A)
Heat Exchanger Coil
Coil
Rows
Fin pitch
Face area
Open
Close
Propeller / AC motor
1 … 370
IB-976-501 … 1
6 … 700 / 700
20
WHT – BRN: 213
RED (PNK) – WHT: 168
—: —
Thermal fuse
150
Automatic reclosing
2.0
440
°C
°C
µF
VAC
Aluminum plate fin / Copper tube
2
1.4
0.288
mm
m2
External Finish
Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
9
Outdoor Unit
AEI 35 AH
Control PCB (A) / Control PCB (B)
Part No.
Controls
Control circuit fuse
CB-CRV123EH (POW-CRV123GJH)
Microprocessor
250V, 20A
Compressor
Type
Compressor model / Nominal output
Compressor oil … Amount
Coil resistance (Ambient temp. 20°C)
cc
Ω
Safety devices
CT (Peak current cut-off control)
Compressor discharge temp. control
Operation cut-off control in abnormal ambient temp.
Run capacitor
µF
VAC
Crankcase heater
Type
Operating temp.
Run capacitor on control PCB (A)
Heat Exchanger Coil
Coil
Rows
Fin pitch
Face area
YES
YES
—
—
—
—
Fan & Fan Motor
Type … Fan / Fan Motor
Q’ty … Dia.
mm
Fan motor model … Q’ty
No. of poles … Rough measure rpm (Cool / Heat)
Nominal output
W
Coil resistance (Ambient temp. 20°C) Ω
Safety devices
DC Rotary (Hermetic)
G4C090LU1ER / 600W
FV50S … 320
U – V: 0.81
V – W: 0.81
W – U: 0.81
Open
Close
°C
°C
µF
VAC
Propeller / DC Motor
1 … 370
DAJ12-55J71-C … 1
8 … 750 / 750
50
—
—
—
—
—
—
—
—
mm
m2
Aluminum plate fin / Copper tube
2
1.4
0.367
External Finish
Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
10
2-3. Other Component Specifications
Indoor Unit
Outdoor Unit
AWI 25 AHL
AWI 35 AHL
AEI 25 AH
AEI 35 AH
• Indoor heat exchanger sensor
• Compressor temp sensor
• Indoor air temp sensor
10
200
9
Resistance (kΩ)
7
6
5
4
3
160
140
120
100
80
60
2
40
1
20
10
15
20 25 30 35
Temperature (°C)
0
40
0
10 20 30 40 50 60 70 80 90
Temperature (°C)
• Outdoor air temp sensor
• Outdoor heat exchanger sensor
40
35
Resistance (kΩ)
Resistance (kΩ)
180
8
30
25
20
15
10
5
0
11
–20 –15 –10 –5 0
5 10
Temperature (°C)
15
20
5
187.5
187.5
450
86.5
178.9
Wide tube ø9.52(3/8")
Drain hose ø18
Narrow tube ø6.35(1/4")
825
187.5
450
187.5
45
40
40
178.9
3
24.5
12
45
189
7
86.5
56
285
45
825
56 79.5
56
285
815
46.5
92.5
(ø6
)
(ø65
5)
23
360
308
40
133.8
70
122.5
70
40
32
52
196
24.5
27.4
Unit: mm
3. DIMENSIONAL DATA
815
Indoor Unit AWI 25 AHL
AWI 35 AHL
5
Outdoor Unit AEI 25 AH
AEI 35 AH
23
.6
ID
:2ø
91
12
316
290
265
91
AIR DISCHARGE
2-ø12 holes
Wide tube service valve
ø9.52 (3/8")
Narrow tube service valve
ø6.35 (1/4")
72
109
55
548
720
16
AIR INTAKE
(12 class only)
ID
:ø
AIR INTAKE
275
18
538
2
155
Unit: mm
13
4. REFRIGERANT FLOW DIAGRAM
4-1. Refrigerant Flow Diagram
AWI 25 AHL
AWI 35 AHL
Outdoor Unit
Indoor unit
AEI25AH
AEI35AH
Outdoor unit
Wide tube
O.D.
ø9.52 mm
(3/8 ")
Accumulator
Wide tube
service
valve
Compressor
Indoor Unit
4-way
valve
Muffler
Narrow tube
O.D.
ø6.35 mm
(1/4")
Electric
expansion
valve
Narrow
tube
service
valve
Capillary tube
for split flow
Heat exchanger
Heat exchanger
Muffler
M
Cooling cycle
Strainer
(Defrosting cycle)
Heating cycle
Insulation of Refrigerant Tubing
IMPORTANT
IMPORTANT
Because capillary tubing is used in the outdoor unit, both the
wide and narrow tubes of this air conditioner become cold. To
prevent heat loss and wet floors due to dripping of
condensation, both tubes must be well insulated with a
proper insulation material. The thickness of the insulation
should be a min. 8 mm.
CAUTION
After a tube has been insulated,
never try to bend it into a narrow
curve because it can cause the tube
to break or crack.
14
Insulation
Thickness:
Min. 8 mm
Thickness:
Min. 8 mm
Narrow tube
Wide tube
5. PERFORMANCE DATA
5-1. Temperature Charts
Indoor Unit
Outdoor Unit
AWI 25 AHL
AEI 25 AH
■ Heating Characteristics
High pressure at wide tube service valve
MPa (kgf/cm2G)
Low pressure at wide tube service valve
MPa (kgf/cm2G)
■ Cooling Characteristics
1.3
(12.2)
1.2
(11.2)
C
.30°
mp
r Te
r Ai
o
Indo
C
27°
24°
C
1.1
(10.2)
1.0
(9.2)
25
30
35
3.5
(34.7)
oor
3.0
(29.6)
Ind
20°
C
C
17°
2.5
(24.5)
2.0
(19.4)
–5
40
°C
.23
mp
Te
Air
0
5
10
15
20
25
Outdoor inlet air D.B. temp.(˚C)
Outdoor inlet air D.B. temp.(˚C)
9
8
mp
ir Te
or A
Indo
4
C
.30°
Operating current (A)
Operating current (A)
5
C
27°
C
24°
3
7
p.23°C
6
Indoor Air Tem
20°C
5
17°C
4
3
2
25
30
35
2
–5
40
Outdoor inlet air D.B. temp.(˚C)
16
Air
door
p.30
Tem
Indoor discharge air temperature (˚C)
Indoor discharge air temperature (˚C)
5
10
15
20
25
60
17
°C
In
15
27°C
14
24°C
13
12
11
10
25
0
Outdoor inlet air D.B. temp.(˚C)
30
35
55
50
Outdoor inlet air D.B. temp.(˚C)
C
20°C
45
17°C
40
35
30
25
–5
40
p.23°
ir Tem
rA
Indoo
0
5
10
15
20
25
Outdoor inlet air D.B. temp.(˚C)
NOTE
Overload prevention operates to protect the air conditioner when outdoor ambient temperature becomes
extremely high in heating mode. (Refer to “9-2. Overload prevention during heating.”)
●…
Points of rating condition
Black dots in above charts indicate the following rating conditions.
Cooling: Indoor air temperature 27°C D.B. / 19°C W.B. Heating: Indoor air temperature 20°C D.B.
Outdoor air temperature 35°C D.B. / 24°C W.B.
Outdoor air temperature 7°C D.B. / 6°C W.B.
15
Indoor Unit
Outdoor Unit
AWI 35 AHL
AEI 35 AH
Outdoor fan speed
Low
High
1.2
(11.2)
.30°C
or
Indo
mp
ir Te
A
27°C
1.1
(10.2)
24°C
1.0
(9.2)
25
9
30
35
Outdoor inlet air D.B. temp.(˚C)
40
Low
24°
C
5
4
3
17°
C
3.0
(29.6)
2.5
(24.5)
2.0
(19.4)
5
0
5
10
15
20
25
7
Indoor
6
p.23°C
Air Tem
20°C
17°C
5
4
3
2
2
20
18
30
35
Outdoor inlet air D.B. temp.(˚C)
5
Outdoor fan speed
Low
High
16
14
40
Indoor discharge air temperature (˚C)
25
Indoor discharge air temperature (˚C)
oo
Ind
8
C
30°
C
°
27
6
3°C
p.2
C
20°
em
rT
r Ai
9
High
7
3.5
(34.7)
Outdoor inlet air D.B. temp.(˚C)
Outdoor fan speed
8
Operating current (A)
High pressure at wide tube service valve
MPa (kgf/cm2G)
1.3
(12.2)
■ Heating Characteristics
Operating current (A)
Low pressure at wide tube service valve
MPa (kgf/cm2G)
■ Cooling Characteristics
Indoor Air
Temp.30°C
27°C
12
24°C
10
8
6
25
30
35
Outdoor inlet air D.B. temp.(˚C)
40
10
15
20
0
5
Outdoor inlet air D.B. temp.(˚C)
25
60
55
23°C
50
20°C
45
17°C
40
35
30
25
5
0
5
10
15
20
Outdoor inlet air D.B. temp.(˚C)
25
NOTE
Overload prevention operates to protect the air conditioner when outdoor ambient temperature becomes
extremely high in heating mode. (Refer to “9-2. Overload prevention during heating.”)
●…
Points of rating condition
Black dots in above charts indicate the following rating conditions.
Cooling: Indoor air temperature 27°C D.B. / 19°C W.B. Heating: Indoor air temperature 20°C D.B.
Outdoor air temperature 35°C D.B. / 24°C W.B.
Outdoor air temperature 7°C D.B. / 6°C W.B.
16
5-2. Air Throw Distance Charts
Indoor Unit
AWI 25 AHL
Cooling
Room air temp. :
Fan speed
:
27°C
High
Horizontal distance (m)
Axis air velocity (m/s)
Vertical distance (m)
1
2
3
4
5
6
7
8
9
8
9
1
2
3
4
: Flap angle 0° ,
: Flap angle 30°,
: Axis air velocity 0°
: Axis air velocity 30°
Heating
Room air temp. :
Fan speed
:
20°C
High
Horizontal distance (m)
Axis air velocity (m/s)
Vertical distance (m)
1
2
3
4
5
6
7
1
2
3
4
: Flap angle 45° ,
: Flap angle 60° ,
: Axis air velocity 45°
: Axis air velocity 60°
17
Indoor Unit
AWI 35 AHL
Cooling
Room air temp. :
Fan speed
:
27°C
High
Horizontal distance (m)
Axis air velocity (m/s)
Vertical distance (m)
1
2
3
4
5
6
7
8
9
8
9
1
2
3
4
: Flap angle 0° ,
: Flap angle 30°,
: Axis air velocity 0°
: Axis air velocity 30°
Heating
Room air temp. :
Fan speed
:
20°C
High
Horizontal distance (m)
Axis air velocity (m/s)
Vertical distance (m)
1
2
3
4
5
6
7
1
2
3
4
: Flap angle 45° ,
: Flap angle 60° ,
: Axis air velocity 45°
: Axis air velocity 60°
18
5-3. Operating Frequency Charts
Indoor Unit
Outdoor Unit
AWI 25 AHL
AEI 25 AH
■ Cooling
230V Single-phase 50Hz
5
Cooling Capacity (kW)
4
Max.
3
Center
2.65
2
Min.
1
0
0
10
20
30
40
50
54
60
70
80
Operating Freqency (Hz)
1200
Max.
Power Input (W)
1000
Center
800
755
600
400
Min.
200
0
0
10
20
30
40
50 54
Operating Freqency (Hz)
NOTE
1) Rating conditions in cooling are:
Indoor: 27°C D.B. / 19°C W.B.
Outdoor: 35°C D.B. / 24°C W.B.
2) Fan speed: High
19
60
70
80
■ Heating
230V Single-phase 50Hz
Max.
Heating Capacity (kW)
5
4
3.6
Center
3
2
Min.
1
0
0
20
40
60
75 80
100
120
Operating Freqency (Hz)
1400
Max.
Power Input (W)
1200
Center
1000
995
800
600
400
Min.
200
0
0
20
40
60
75 80
Operating Freqency (Hz)
NOTE
1) Rating conditions in heating are:
Indoor: 20°C D.B.
Outdoor: 7°C D.B. / 6°C W.B.
2) Fan speed: High
20
100
120
Indoor Unit
Outdoor Unit
AWI 35 AHL
AEI 35 AH
■ Cooling
230V Single-phase 50Hz
5
Cooling Capacity (kW)
4
Max.
Center
3.5
3
2
Min.
1
0
0
10
20
30
40
50
60
70
78 80
90
Operating Freqency (Hz)
1400
Max.
1200
Center
Power Input (W)
1090
1000
800
600
400
Min.
200
0
0
10
20
30
40
50
Operating Freqency (Hz)
NOTE
1) Rating conditions in cooling are:
Indoor: 27°C D.B. / 19°C W.B.
Outdoor: 35°C D.B. / 24°C W.B.
2) Fan speed: High
21
60
70
78 80
90
■ Heating
230V Single-phase 50Hz
Max.
6
5
Center
Heating Capacity (kW)
4.2
4
3
2
Min.
1
0
0
20
40
60
80 81
100
120
Operating Freqency (Hz)
1600
Max.
1400
Center
Power Input (W)
1200
1165
1000
800
600
400
Min.
200
0
0
20
40
60
Operating Freqency (Hz)
NOTE
1) Rating conditions in heating are:
Indoor: 20°C D.B.
Outdoor: 7°C D.B. / 6°C W.B.
2) Fan speed: High
22
80 81
100
120
6. ELECTRICAL DATA
6-1. Electrical Characteristics
Indoor Unit
Outdoor Unit
AWI 25 AHL
AEI 25 AH
Cooling
Indoor Unit
Fan Motor
Performance at
Rating conditions
Rating conditions:
Running amp.
Power input
Indoor air temperature:
Outdoor air temperature:
A
kW
0.17
0.033
Outdoor Unit
Fan Motor
Compressor
230V Single-phase 50Hz
0.21
3.48
0.048
0.674
Complete Unit
Outdoor Unit
Fan Motor
Compressor
230V Single-phase 50Hz
0.21
4.43
0.048
0.912
Complete Unit
Outdoor Unit
Fan Motor
Compressor
230V Single-phase 50Hz
0.14
4.90
0.030
1.025
Complete Unit
Outdoor Unit
Fan Motor
Compressor
230V Single-phase 50Hz
0.14
5.17
0.030
1.100
Complete Unit
3.86
0.755
27°C D.B. / 19°C W.B.
35°C D.B.
Heating
Indoor Unit
Fan Motor
Performance at
Rating conditions
Rating conditions:
Indoor Unit
Outdoor Unit
Running amp.
Power input
Indoor air temperature
Outdoor air temperature
A
kW
0.17
0.035
4.81
0.995
20°C D.B.
7°C D.B. / 6°C W.B.
AWI 35 AHL
AEI 35 AH
Cooling
Indoor Unit
Fan Motor
Performance at
Rating conditions
Rating conditions:
Running amp.
Power input
Indoor air temperature:
Outdoor air temperature:
A
kW
0.17
0.035
5.21
1.090
27°C D.B. / 19°C W.B.
35°C D.B.
Heating
Indoor Unit
Fan Motor
Performance at
Rating conditions
Rating conditions:
Running amp.
Power input
Indoor air temperature:
Outdoor air temperature:
A
kW
0.17
0.035
20°C D.B.
7°C D.B. / 6°C W.B.
23
5.48
1.165
FLAP MOTOR
E
C FM FM H
W
W
BLU
1 1 FAN
3 3 5P(WHT)
5 5
BLU
FMC1
PNK
FMC2
HA
JEM-A
4P(WHT)
MV
(BLK)
W W
BLU
V W
WHT
U W
RED
W
BLK
BLK
BLK(ORG)
BLK(ORG)
THERMISTOR
(COIL)
1
2
3
4
(WHT)
OUTDOOR
(WHT)
COIL/COMP
1 2
1 2
1 2 3 4
1 2 3 4
W
2 1
2 1
FM
RV
FAN MOTOR
4-WAY VALVE
8FA-2-5257-143XX-1
1 2 3
1 2 3
R
/
S/U V
GRN/YEL
C/W
CM
COMPRESSOR
MOTOR
8FA-2-5257-145XX-0
Meaning of Abbreviations
ABBREV.
MEANING
1
BLK
BLACK
2
BLU
BLUE
3
BRN
BROWN
4
GRN/YEL
GREEN/YELLOW
5
GRY
GREY
6
ORG
ORANGE
7
PNK
PINK
8
RED
RED
9
VLT
VIOLET
10
WHT
WHITE
11
YEL
YELLOW
To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.
GRN/YEL
FAN MOTOR
CAPACITOR
1 1
2 2
ROOM/COIL 3 3
4P(WHT) 4 4
1 1
2 2 HALL IC
3 3 3P(WHT)
W
1 2 3
1 2 3
THERMISTOR
(ROOM)
RV2 RV1
(PNK)
RED
BRN
WHT
24
FM
(RED)
PNK
BRN
WHT
RED
BLK
YEL
W
RED
CONTROLLER
FAN MOTOR
L2
VL3P
CONNECTOR
1
2
3
4
5
6
7
8
9
L1
FERRITE CORE
1
2
3 FLAP
4 5P(WHT)
5
1
2
3
4
5
6
7
8
9
1 2 3 4 5 6
1 2 3 4 5 6
BLK
BLK
BLK
BLK
1
2
3
4
5
RED
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
W
OUTDOOR
THERMISTOR
RED
PNK
BLU
BRN
YEL
1
2
3
4
5
1
2
3
4
5
6
7
8
9
W
WARNING
1
2
FLAP 3
4
5
1
2
3
4
LAMP 5
9P(WHT) 6
7
8
9
W
CONTROLLER
CAPACITOR
RY01
POWER
RELAY
W
OUT+ OUT– IN– IN+
T-RUN/TEST
GRN/YEL
3
SI
IND LAMP ASSY
4
AC IN SI1
W
(PNK)
RED
WHT
BLU
S1 IN2 IN1
1
2
3
W
ORG
RED
GRY
WHT
YEL
BLK
W
WHT
W
WHT
W
YL2P
CONNECTOR
EARTH
BLU
BLU
GRN/YEL
TERMINAL
BASE
BLU
BLU
POWER
SUPPLY
L
BLK
N
1 2 3 4 5 6
1 2 3 4 5 6
RED
YL3P
CONNECTOR
BRN
BLU
4
ORG
4
BRN
WHT
RED
MAGNETIC COIL
MV
GRN/YEL
FERRITE
CORE
GRN/YEL
GRN/YEL
REACTANCE
COMPRESSOR
THERMISTOR
WHT
YEL
YEL
BLK
BLK
BLK
2
COIL
THERMISTOR
1
2
6-2. Electric Wiring Diagrams
1
AWI 25 AHL
GRY
GRY
Indoor Unit
BRN
EVAPORATOR
AEI 25 AH
Outdoor Unit : AEI 25 AH
TERMINAL BASE
Outdoor Unit
Indoor Unit : AWI 25 AHL
1
2
3 FLAP
4 5P(WHT)
5
FLAP MOTOR
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
(WHT)
DCFM
E
25
1 1 FAN
3 3 5P(WHT)
5 5
1
2
ROOM/COIL 3
4P(WHT) 4
1 1
2 2 HALL IC
3 3 3P(WHT)
GRN/YEL
FAN MOTOR
CAPACITOR
BLU
FMC1
PNK
FMC2
1
2
3
4
1 2 3 4 5 6 7
1 2 3 4 5 6 7
W
W
4P(WHT)
MV
(BLK)
W W
BLU
V W
WHT
U W
RED
FM
GRN/YEL
BLK
BLK
BLK(ORG)
BLK(ORG)
FAN MOTOR
(WHT)
OUTDOOR
(WHT)
COIL/COMP
1 2
1 2
1 2 3 4
1 2 3 4
W
2 1
2 1
THERMISTOR
(COIL)
HA
JEM-A
L2
RV
1
2
3
4
4-WAY VALVE
8FA-2-5257-143XX-1
1 2 3
1 2 3
R
/
S/U V
GRN/YEL
C/W
CM
COMPRESSOR
MOTOR
8FA-2-5257-146XX-0
Meaning of Abbreviations
ABBREV.
MEANING
BLK
BLACK
2
BLU
BLUE
3
BRN
BROWN
1
4
GRN/YEL
GREEN/YELLOW
5
GRY
GREY
6
ORG
ORANGE
7
PNK
PINK
8
RED
RED
9
VLT
VIOLET
10
WHT
W HITE
11
YEL
YELLOW
To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.
FM
(RED)
PNK
BRN
WHT
RED
BLK
YEL
L1
BLU
BLU
FAN MOTOR
1 2 3 4 5 6
1 2 3 4 5 6
RV2 RV1
CONTROLLER
THERMISTOR
(ROOM)
W
VL3P
CONNECTOR
1
2
3
4
5
RED
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
BLK
RED
BLU
YEL
RED
PNK
BLU
BRN
YEL
1
2
3
4
5
1
2
3
4
5
6
7
8
9
W
WARNING
1
2
FLAP 3
4
5
1
2
3
4
LAMP 5
9P(WHT) 6
7
8
9
W
CONTROLLER
WHT
RY01
POWER
RELAY
W
OUT+ OUT– IN– IN+
T-RUN/TEST
GRN/YEL
3
SI
IND LAMP ASSY
4
AC IN SI1
W
FERRITE CORE
S1 IN2 IN1
1
2
3
W
ORG
RED
GRY
WHT
YEL
BLK
W
WHT
W
BLK
BLK
BLK
BLK
W
WHT
EARTH
OUTDOOR
THERMISTOR
GRN/YEL
TERMINAL
BASE
BLU
BLU
POWER
SUPPLY
L
YL2P
CONNECTOR
N
1 2 3 4 5 6
1 2 3 4 5 6
RED
BLK
BRN
BLU
4
ORG
4
FERRITE
CORE
GRN/YEL
MV
GRN/YEL
RED
MAGNETIC COIL
(PNK)
RED
WHT
BLU
WHT
GRN/YEL
REACTANCE
COMPRESSOR
THERMISTOR
BLK
2
YEL
YEL
BLK
BLK
1
2
COIL
THERMISTOR
1
AWI 35 AHL
GRY
GRY
Indoor Unit
BRN
EVAPORATOR
AEI 35 AH
Outdoor Unit : AEI 35 AH
TERMINAL BASE
Outdoor Unit
Indoor Unit : AWI 35 AHL
7. INSTALLATION INSTRUCTIONS
7-1. Installation Site Selection
7-1-1. Indoor Unit
WARNING
To prevent abnormal heat
generation and the possibility
of fire, do not place obstacles,
enclosures and grilles in front
of or surrounding the air conditioner in a way that may
block air flow.
15 cm min.
5 cm
min.
AVOID:
●
●
5 cm
min.
Front View
direct sunlight.
Fig. 1
nearby heat sources that may affect performance of
the unit.
●
areas where leakage of flammable gas may be
expected.
●
places where large amounts of oil mist exist.
Tubing length (L)
INDOOR
UNIT
Elevation
difference (H)
OUTDOOR
UNIT
DO:
●
●
●
select an appropriate position from which every corner of the room can be uniformly cooled. (High on a
wall is best.)
CAUTION
select a location that will hold the weight of the unit.
Indoor unit
select a location where tubing and drain hose have
the shortest run to the outside. (Fig. 1)
●
allow room for operation and maintenance as well as
unrestricted air flow around the unit. (Fig. 2)
●
install the unit within the maximum elevation difference (H) above or below the outdoor unit and within
a total tubing length (L) from the outdoor unit as
detailed in Table 1 and Fig. 3.
●
Fig. 2
For stable operation of
the air conditioner, do not
install wall-mounted type
indoor units less than
1.5 m from floor level.
Wall
Minimum height
from floor level
1.5 m
Floor level
Fig. 3
Install the indoor unit more than 1 meter away from any
antenna or power lines or connecting wires used for
television, radio, telephone, security system, or intercom. Electrical noise from any of these sources may
affect operation.
Table 1
Model
Max. Allowable Tubing
Length at Shipment
(m)
Limit of Tubing
Length (L)
(m)
Limit of Elevation
Difference (H)
(m)
Required Amount of
Additional Refrigerant
(g/m)*
AWI 25 - 35
7.5
15
7
15
* If total tubing length becomes 7.5 to 15 m (max.), charge additional refrigerant (R410A) by 15 g/m.
No additional compressor oil is necessary.
26
7-1-2. Outdoor Unit
NO
AVOID:
●
heat sources, exhaust fans, etc. (Fig. 4)
●
damp, humid or uneven locations.
Exhaust fan
Hot air
Heat source
Outdoor unit
DO:
●
choose a place that is well ventilated.
●
allow enough room around the unit for air intake/
exhaust and possible maintenance. (Fig. 5a)
●
provide a solid base (level concrete pad, concrete
block, 10 × 40 cm beams or equal), a minimum of
10 cm above ground level to reduce humidity and
protect the unit against possible water damage
and decreased service life. (Fig. 5a)
●
Install cushion rubber under unit’s feet to reduce
vibration and noise. (Fig. 5b)
●
use lug bolts or equal to bolt down unit, reducing
vibration and noise.
●
Install in a location where no antenna of a television or radio exists within 3 meters.
Fig. 4
Obstacle above
Air intake
Min.
5 cm
Min. 10 cm
Air discharge
Valve
side
Min.
25 cm
Min.
2m
Min.
2m
Obstacle
choose a place as cool as possible.
Air discharge
●
Min.
40 cm
Ground
Anchor bolts
(4 pcs.)
Min. 10 cm
Air intake
Concrete
or equal
Ab
ou
t4
Abou
0c
t 10
cm
m
Fig. 5a
Cushion rubber
Fig. 5b
27
7-2. Recommended Wire Length and Diameter
Regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to your
local electrical codes. Carefully observe these regulations when carrying out the installation.
Table 2 lists recommended wire lengths and diameters for power supply systems.
NOTE
Refer to the wiring system diagram (Fig. 6) for the meaning of “A”, “B” and “C” in Table 2.
Table 2
Cross-Sectional
Area (mm2)
Model
(A) Power Supply Wiring Length (m)
(B) Power Line Length (m)
2
AEI 25 AH
AEI 35 AH
WARNING
(A)+(B)
●
●
●
(C) Control
Line Length (m)
3.5
2
40
70
20
40
70
20
Be sure to comply with local
codes on running the wire
from the indoor unit to the
outdoor unit (size of wire
and wiring method, etc.).
Each wire must be firmly
connected.
No wire should be allowed
to touch refrigerant tubing,
the compressor, or any
moving part.
Fuse or Circuit
Breaker Capacity
10A
WIRING SYSTEM DIAGRAM
OUTDOOR UNIT
INDOOR UNIT
TERMINAL
TERMINAL
(B)
1
1
2
2
GROUNDING LINE
4
4
(C)
L
N
(A)
WARNING
Power supply:
Single-phase 220 – 240VAC 50Hz
●
●
●
●
To avoid the risk of electrical shock, each air
conditioner unit must be grounded.
For the installation of a grounding device,
please observe local electrical codes.
Grounding is necessary, especially for units
using inverter circuits, in order to release
charged electricity and electrical noise caused
by high tension. Otherwise, electrical shock
may occur.
Place a dedicated ground more than 2 meters
away from other grounds and do not have it
shared with other electric appliances.
CAUTION
Fig. 6
Be sure to connect the power
supply line to the indoor unit
as shown in the wiring diagram. The outdoor unit draws
its power from the indoor unit.
28
7-3. Remote Control Unit Installation Position
The remote control unit can be operated from either a non-fixed position or a wall-mounted position.
To ensure that the air conditioner operates correctly, do not install the remote control unit in the following places:
● In direct sunlight
● Behind a curtain or other place where it is covered
● More than 8 m away from the air conditioner
● In the path of the air conditioner’s airstream
● Where it may become extremely hot or cold
● Where it may be subject to electrical or magnetic interference
● Where there is an obstacle between the remote control unit and the air conditioner (since a check signal is
sent from the remote control unit every 5 minutes)
7-3-1. Mounting on a Wall
Before mounting the
remote control unit, press
the ON/OFF operation
button at the mounting
location to make sure that
the air conditioner operates from that location.
The indoor unit should
make a beeping sound to
indicate that it has
received the signal.
Rear side
Remote control unit mount
Press
Mounting screws
4 × 16 (included)
Hole
Set in
place
To prevent loss of the remote control
unit, you can connect the remote
control unit to the mount by passing
a string through the remote control
unit and attachment hole.
To take out the remote control unit, pull it forward.
Fig. 7
29
7-4. How to Test Run the Air Conditioner
After turning on power to the air conditioner, use the remote
controller and follow the steps below to conduct the test run.
(1) Set the remote controller in Test Run mode.
(Fig. 8a)
a) Press and hold the QUIET button.
b) Then press and hold the 1HR TIMER button.
c) At the same time, press the ACL (reset) button once.
Use a pointed object such as the tip of a pen to press
the ACL button.
ON/OFF
operation
button
QUIET
button
• After a few seconds, “ ” appears and “oP-1” blinks in
the remote controller display area. (Fig. 8b)
1HR.
TIMER
button
d) Release the 1HR TIMER button.
e) Release the QUIET button.
(2) Start Cooling mode test run by pressing the ON/OFF
operation button of the remote controller. (Fig. 8a)
• This starts the fan producing uncooled forced air with
the 3 indicator lamps (OPERATION lamp, TIMER lamp
and QUIET lamp) on the main unit blinking. (Fig. 8c)
• After 3 minutes, the system shifts into cooling operation, and cool air will start to be felt. Cool mode test
run is unaffected by the room temperature.
(3) Press the ON/OFF operation button of the remote controller again to stop the test run. (Fig. 8a)
(4) Finally press the ACL (reset) button of the remote controller to release it from Test Run mode to return to normal mode. (Fig. 8a)
ACL
(Reset)
button
Fig. 8a
• “ ” and “oP-1” will disappear from the remote controller display area.
IMPORTANT
After the test run is completed, be sure to press the ACL
(reset) button to return to normal mode. The air conditioner
will not operate correctly if this is not done.
Fig. 8b
OPERATION lamp
TIMER lamp
QUIET lamp
Fig. 8c
30
7-5. Remove the Grille to Install the
Indoor Unit
Grille
Air intake grille
Basically, these models can be installed and wired
without removing the grille. If access to any internal
part is needed, follow the steps as given below.
CAUTION
Fig. 9a
Be sure to wear work gloves during
installation to avoid being cut by the
sharp aluminum fins of the heat
exchanger.
How to remove the grille
Screw cover
(1) Grasp both ends of the air intake grille, and remove
it by opening towards the front and pulling towards
you. (Fig. 9a)
Fig. 9b
Cover
Thermistor
Thermistor
(2) Remove the 2 screws. (Fig. 9b)
(3) Remove the screw on the right side cover plate
and open the cover. (Fig. 10a)
(4) Take out the thermistor from the grille. (Fig. 10b)
Fig. 10b
Fig. 10a
(5) Pull the lower part of the grille toward you to
remove. (Fig. 11a)
Tab
*
(6) Use a standard screwdriver to push on the tabs to
remove the grille.
*
Frame
How to replace the grille
Tab
(1) Reinstall the grille into the lower part while aligning
its tabs on the upper part. (Fig. 11b) Insert the tabs
in the slots and push the lower part of the grille
back into position.
Fig. 11a
*
(2) Make sure that the grille and frame are firmly fitted
together by engaging the tabs.
*
(3) Attach the thermistor on the grille. (Fig. 10a)
(4) Close the cover and replace the screw. (Fig. 10a)
(5) Affix the grille with the 2 previously removed
screws. (Fig. 9b)
Fig. 11b
(6) Install the air intake grille.
Groove
(a) Allow the edge of the air intake grille to slide into
the top of the indoor unit, and then insert it all the
way inside. (Fig. 12a)
Pin
(b) Press the bottom right and left corners of the air
intake grille to attach it to the indoor unit. (Fig. 12b)
Fig. 12a
Fig. 12b
31
Grille
8. MAINTENANCE
Tab
8-1. Address Setting of the Remote
Control Unit
The address can be set in order to prevent interference between remote controllers when two Sanyo
indoor units are installed near each other. The address
is normally set to “A.” To set a different address, it is
necessary to change the address on the second
remote controller.
Fig. 13
NOTE
Once changed, you cannot restore the original
address setting of the air conditioner.
(1) Switch on the power source.
(2) Break the address-setting tab marked “A” on the
second remote controller to change the address
(Fig. 13). When the tab is removed, the address is
automatically set to B (Fig. 14).
ACL button
Fig. 14
(3) Press and hold the remote controller QUIET button and 1 HR TIMER button. At the same time,
press the ACL (reset) button. Use a thin object
such as the tip of a pen to press the ACL button.
When this has been done, “oP-1” (test run)
appears, blinking, in the remote controller clock
display area.
AIR CONDITIONER
(4) Each time the 1 HR TIMER button is pressed, the
display changes as shown below. Press this button 2 times to change the display to “oP-7”
(address setting). (Fig. 15)
ON•/OFF•
UIET
Test run mode
QUIET
button
Self-diagnostic mode
ON/OFF
operation
button
1HR.
1HR.
TIMER
button
Address setting mode
TEMP.
(5) “oP-7” has now been selected for address setting.
(6) Press the ON/OFF operation button on the remote
controller. (Fig. 15) Check that the “beep” signalreceived sound is heard from the second indoor
unit (approximately 5 times). The sound you hear
is the signal that the remote controller address
has been changed.
MODE
FAN SPEED
NIGHT SETBACK
FLAP
HIGH POWER
TIMER
(7) Finally press the remote controller ACL (reset)
button to cancel the blinking “oP-7” display.
(Fig. 15)
CANCEL
SENSOR
Changing of the second remote controller address is
now completed.
CLOCK
F
ADR
12H
ACL
Fig. 15
32
24H
ACL
(Reset)
button
8-2. Disconnecting and Connecting Positive Connector for Outdoor Unit
One of the two types of connectors illustrated at left is used. Their
basic structure is the same for each.
How to Disconnect
Hold the resin connector cover, and pull the connector off.
You cannot disconnect the connector by pulling the wire since
it is locked inside. Always hold the cover to disconnect. (See
illustration at left.) For the connector without the resin cover,
push the lock in the direction of “2” while pulling it off.
Pull the cover upward
How to Connect
In order to connect, hold the resin cover of the connector and
push it in. Confirm the click sound for the inside lock.
When the cover is pulled upward, the lock is
released with the sequence of 1 and 2.
33
9. FUNCTIONS
9-1. Operation Functions
■ Emergency operation
■ SENSOR DRY
Emergency operation is available when the remote
controller malfunctions, has been lost, or otherwise
cannot be used.
During DRY operation, the system adjusts the room
temperature and fan speed according to the conditions in the
room, in order to maintain a comfortable room environment.
SENSOR DRY operation
• DRY operation is as shown in the figure below.
To operate the system, press the OPERATION button,
which is also used as the receiver, below the unit display.
Each time this button is pressed, the OPERATION lamp
changes color to indicate the type of operation. Select the
desired type of operation.
Load
COOL zone
COOL
HEAT
STOP
(GREEN)
(RED)
(Lamp Off)
A zone
B zone
• The set temperature is 2°C below the detected room
temperature in the case of cooling operation, and 2°C
above the room temperature in the case of heating
operation. The flap and fan speed settings are AUTO.
Conditions are monitored at all
times when the room temperature
is below 15°C.
DRY A
The compressor operation frequency varies.
The indoor fan operates with 1/f fluctuation.
■ AUTO cooling/heating operation
● Selecting the operation mode
DRY B
• When AUTO mode is selected, the microprocessor calculates
the difference between the set temperature and the room
temperature, and automatically switches to Cooling or
Heating mode.
Room temp. ≥ Set temp.
COOL
Room temp. ≤ Set temp.
HEAT
The compressor operates at a low operating frequency.
The indoor fan operates with 1/f fluctuation.
Monitor
• Monitoring operation takes place when the room temperature
is below 15°C, or more than 3°C below the set temperature.
• When the monitoring range is entered, the compressor stops,
and the indoor fan operates with 1/f fluctuation.
• As shown by the example in the figure below, with AUTO
cooling/heating operation, the mode changes between
Heating and Cooling mode according to changes in the
relationship between the current room temperature and the
set temperature.
Example
Example of operation in AUTO mode with the set room temperature
at 23°C.
■ PAM-α control
• In order to further improve inverter performance, control is
switched between PWM control at low operation speeds, and
PAM control at high operation speeds, making the most
effective use of power.
Room temp.
Zone A
Zone B
Set temp. 23
Zone C
Zone C
Zone B
More than
1 hour
Zone A
Compressor
Operation mode
ON
OFF
Cooling
Within
1 hour
ON
OFF
Heating
ON
Cooling
34
■ HIGH POWER
■ Lamp colors
This function acts to raise the power but keeps the AC system in
the same operating mode.
This function is set with the HIGH POWER button on the remote
controller.
(It can be set regardless of the temperature and fan speed
settings.)
OPERATION lamp
HEAT operation
DRY operation
COOL operation
Red
Orange
Green
TIMER lamp
Green
QUIET lamp
Green
● HIGH POWER operation from remote controller
The unit operates at maximum output for 30 minutes,
regardless of the desired temperature.
The fan speed is 1 step above “High.”
Frequency
■ Timer backup
MAX
• Operation stops if there are no operator controls for 25 hours or
longer after unit operation switched from OFF to ON by use of
ON timer operation.
Time
0
30 min.
Start
5 min.
End
NOTE
• When HIGH POWER operation ends, the unit operates at low
Hz for 5 minutes, regardless of the thermostat OFF conditions.
• When in DRY mode, operation is in the cooling zone.
■ NIGHT SETBACK
• When NIGHT SETBACK operation is set, the temperature and
fan speed settings will be adjusted automatically to allow
comfortable sleep.
• When NIGHT SETBACK operation is set, “ mark” appears on
the remote controller. The main unit display lamp also becomes
dimmer.
● COOL and DRY modes
• The indoor unit fan speed is automatically lowered for quiet
operation.
• The temperature setting is raised by 1°C 30 minutes after
NIGHT SETBACK operation is set. This repeats again after
another 30 minutes have passed to gradually raise the
temperature.
● HEAT mode
• The indoor unit and outdoor unit fan speeds are
automatically lowered for quiet operation.
• The temperature setting is lowered by 2°C 30 minutes after
NIGHT SETBACK operation is set.
This repeats again after another 30 minutes have passed to
gradually lower the temperature.
35
9-2. Protective Functions
■ Cold-air prevention during heating
During HEAT operation, the temperature of the indoor heat
exchanger is used to control the frequency and lessen the load
on the compressor before the protective device is activated.
During heating, the fan speed is set to “LL” (very low) or stopped.
As the temperature of the indoor heat exchanger rises, the fan
speed is changed to the set speed.
Indoor heat exchanger
temperature (°C)
■ Overload prevention during heating
Indoor heat exchanger
A. Control start
B. Control end
A
Approx.
53
Approx.
47
Set fan speed
High
Normal operation
B
a
b
c
At start of operation
d
a Area: Automatic capacity control
b When Point A has been exceeded, the operation frequency is
LL
reduced by a certain proportion.
Stopped
c Area: Frequency increase is prohibited.
d At Point B and below, overload prevention is ended and
control is the same as in the a area.
Indoor heat exchanger
temperature (°C)
■ Compressor discharge temperature control
This function controls the operation frequency to prevent the
compressor discharge temperature from rising more than a
specified temperature.
C
B
A
Compressor discharge temperature (°C)
*
b
c
Approx.
94
d
a Area: Automatic capacity control
b When the temperature drops below Point A, the operation
B
a
frequency is reduced by a certain proportion.
b
c
d
a Area: Automatic capacity control.
b When the temperature rises above Point A, the operation
c Area: Frequency increase is prohibited.
d When the temperature reaches Point C or above, freezing
prevention is ended and control is the same as in the a area.
*
A
Approx.
101
2
a
Approx. 40
NOTE
• The fan speed is forcibly changed to “LL” beginning 30 seconds
after the thermostat turns OFF.
• Normal operation refers to operation when the room
temperature has approached the set temperature.
• When HEAT operation starts, the indoor fan is stopped until the
temperature of the indoor heat exchanger reaches 20°C or
higher, or until the room temperature reaches 15°C or higher.
During COOL or DRY operation, freezing is detected and
operation is stopped when the temperature of the indoor heat
exchanger matches the conditions below.
1 Freeze-prevention operation is engaged when the
temperature of the indoor heat exchanger is below 6°C.
2 Restart after freeze-prevention operation occurs when the
temperature of the indoor heat exchanger reaches 8°C or
above.
6
30
Indoor heat exchanger
temperature (°C)
■ Freeze prevention
8
25
frequency is reduced at a specified rate.
c Area: Further frequency increase is prohibited.
d When the temperature falls below Point B, prevention of a rise
When the temperature drops to below 2°C (continuously for 2
minutes or longer), the compressor stops.
Once the freeze condition is detected, the air conditioner will
work less than the maximum frequency until it is turned off.
in frequency is released and the air conditioner operates as in
a area.
*
36
The compressor will stop if the temperature of the compressor
discharge exceeds 120°C due to shortage of gas or other
reason.
■ Defrost detection and release
●
■ CT (Peak current cut-off control)
• This function prevents the circuit breaker or fuse from operating
to open the circuit. This function works when electrical current
has increased due to an increase in the cooling / heating load,
or to a decrease in the power supply voltage. In these cases,
operation frequency is reduced or operation is interrupted automatically to control the electrical current for operation.
• When the cause of the increase in electrical current is rectified,
the system will resume operation in the original mode.
Reverse-Cycle Defrosting
Defrosting Sequence
Heating operation
SAP-KRV93, KRV123
● Outdoor fan ON
● 4-way valve ON
(A)
Cooling • Dry
Peak current cut-off trips
Hz down
Frost sensing
NOTE
Defrost detection occurs in either of the following cases:
• The temperature of the heat exchanger remains at
or below the L1 line for 3 minutes after the start of
HEAT operation.
• The temperature of the heat exchanger remains at
or below the L2 line for 120 minutes after the start
of HEAT operation.
Outdoor heat
exchanger temp.
0
Ambient temp.
L2
L1
Frosting area
Reverse-cycle defrosting operation
● Compressor ➞ 1 minute after it is stopped,
●
●
●
●
compressor is ON.
Outdoor fan ➞ OFF
Indoor fan ➞ OFF
4-way valve ➞ OFF
Operation lamp ➞ Repeatedly switches between red
and orange illumination.
Releasing of defrosting
● Outdoor heating exchanger temp. is over 14°C.
● Defrosting operation lasts 12 minutes (maximum).
2 minutes after it is stopped, compressor is ON.
4-way valve is ON. Outdoor fan is ON.
NOTE
If the air conditioner is turned off during the defrosting
cycle, it will continue defrosting and turn itself off after
defrosting is completed.
37
Heating
12.0
8.5
8.5
Electrical current setting for COOL operation is
used during DEFROST operation.
10. TROUBLESHOOTING
■ Precautions before performing inspection or repair
● After checking the self-diagnostics monitor, turn the power OFF before starting inspection or repair.
● High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an electrical charge
(charging voltage DC 310 V) even after the power is turned OFF, and some time is required for the charge to dissipate. Be
careful not to touch any electrified parts before the controller LED (red) turns OFF.
If the outdoor controller is normal, approximately 30 seconds will be required for the charge to dissipate. However, allow at
least 5 minutes for the charge to dissipate if there is thought to be any trouble with the outdoor controller.
< Clock display >
Test run mode
AIR CONDITIONER
Self-diagnostics mode
■ Method of self-diagnostics
Follow the procedure below to perform detailed trouble diagnostics.
ON/OFF
operation
button
ON EI/OFF E
NOTE
QUIET
button
1: If the operation lamp blinks every 0.5 seconds immediately when the power
is turned ON, there is an external ROM (OTP data) failure on the indoor
circuit board, or a ROM socket insertion problem, or the ROM has not been
installed.
UIET
1HR.
1HR.
TIMER
button
TEMP.
2: The failure mode is stored in memory even when the power is not ON.
Follow the procedure below to perform diagnostics.
MODE
FAN SPEED
NIGHT SETBACK
FLAP
HIGH POWER
Executing self-diagnostics
TIMER
After turning on power to the air conditioner, use the remote controller and
follow the steps below to execute self-diagnostics.
Step 1: Press and hold the remote controller QUIET button and 1 HR TIMER
button. At the same time, press the ACL (reset) button. Use a pointed
object such as the tip of a pen to press the ACL button.
When this has been done, “oP-1” (test run) appears, blinking, in the
remote controller clock display area.
Step 2: Next, press the 1 HR TIMER button once to change the display from
“oP-1” to “oP-3” (self-diagnostics). (The display continues to blink.)
Step 3: Finally press the ON/OFF button to engage self-diagnostics mode.
• The self-diagnostics function utilizes the 3 indicator lamps on the main unit, in
combinations of ON lamps, blinking lamps, and OFF lamps, to report the
existence of sensor trouble or a protective operation. (The lamps blink or
remain ON for 5 seconds, then turn OFF for 2 seconds.) Self-diagnostics is
completed when the buzzer sounds 3 short beeps.
• A maximum of 3 self-diagnostics reports are displayed, for 5 seconds each,
beginning with the most recent report. Following this display the lamps turn
OFF. In order to view the self-diagnostics results again, press the ON/OFF
button again.
• The 3 lamps remain OFF if no trouble has occurred.
<IMPORTANT> After self-diagnostics is completed, be sure to press the ACL
(reset) button to return to normal mode. The air conditioner will
not operate if this is not done.
38
CANCEL
SENSOR
CLOCK
F
ADR
12H
ACL
24H
ACL
(Reset)
button
Self-diagnostics Lamps
Self-diagnostics lamps
OPERATION
TIMER
QUIET
(1) OPERATION lamp
(2) TIMER lamp
(3) QUIET lamp
OPERATION
<NOTE>
Since the indications cover various units, corresponding parts listed below may not be
present in some models.
.... OFF
Indication on indoor unit
Quiet
(3)
Timer
(2)
Operation
(1)
.... Blinking
.... ON (Illuminated)
Code
Diagnostics item
Diagnostics contents
S01
Room temperature sensor failure
S02
Indoor heat exchanger sensor failure
S03
Humidity sensor failure
S04
Compressor temperature sensor failure
S05
Outdoor heat exchanger sensor failure
S06
Outdoor air temperature sensor failure
S07
Outdoor electrical current detection
failure
Outdoor circuit board failure
E01
Indoor/outdoor communications failure
(serial communications)
1 Mis-wiring 2 AC power failure 3 Blown fuse 4 Power relay failure
5 Indoor or outdoor circuit board failure
E02
• HIC circuit failure
• Power Tr (transistor) circuit failure
1 HIC or power Tr failure 2 Outdoor fan does not turn. 3 Instantaneous power outage
4 Service valve not opened. 5 Outdoor fan blocked. 6 Continuous overload operation
7 Compressor failure 8 Outdoor circuit board failure
E03
Outdoor unit external ROM (OTP data)
failure
1 External ROM data failure 2 Outdoor circuit board failure
E04
Peak current cut-off
1 Instantaneous power outage 2 HIC or power transistor failure
3 Outdoor circuit board failure
E05
• PAM circuit failure
• Active circuit failure
1 Outdoor circuit board failure 2 Outdoor power supply voltage failure
E06
Compressor discharge overheat
prevention activated.
1 Electric expansion valve failure 2 Capillaries choked 3 Shortage of refrigerant
4 Continuous overload operation 5 Outdoor fan does not rotate 6 Outdoor circuit board failure
E07
Indoor fan operating failure
1 Fan motor failure 2 Contact failure at connector 3 Indoor circuit board failure
E08
• 4-way valve switching failure
• Indoor zero-cross failure
1 4-way valve failure (heat pump model only)
2 Outdoor circuit board failure
E09
No-refrigerant protection
1 Service valve not opened. 2 Shortage of refrigerant
E10
DC compressor drive circuit failure
1 Open phase 2 Outdoor circuit board failure
E11
Outdoor fan operating failure
1 Fan motor failure 2 Contact failure at connector 3 Outdoor circuit board failure
E12
• Outdoor system communications failure
• Outdoor high-pressure SW
• OLR operation
• Outdoor power supply open phase
• Outdoor coil freezing
1 Mis-wiring 2 Blown fuse 3 Power relay failure 4 Open phase
5 Outdoor circuit board failure 6 Compressor failure
E13
Freeze-prevention operation activated.
1 Indoor fan system failure 2 Shortage of refrigerant 3 Low-temperature operation
39
1 Sensor open circuit or short circuit
2 Contact failure at connector or open circuit at terminal crimping location (short-circuit
detection only for the humidity sensor)
3 Indoor/outdoor circuit board failure
1 Sensor open circuit or short circuit
2 Contact failure at connector or open circuit at terminal crimping location
3 Outdoor circuit board failure
■ If self-diagnostics function fails to operate
• No indicators illuminate and the
indoor fan does not rotate.
• Check the power voltage.
Check the indoor unit.
Blown
Is the fuse blown?
Normal
Replace the circuit
board or the fuse.
Replace the controller.
<Checking the indoor and outdoor units>
■ Checking the indoor unit
No.
Control
Check items (unit operation)
1
Use the remote controller to operate the
unit in “TEST run” mode. To determine
whether the mode is currently in “TEST run”
mode, check the 3 indicator lamps on the
unit. If all 3 are blinking, the current mode is
“TEST run.”
• The rated voltage must be present between inter-unit cables 1 and 2.
• Connect a 5 kΩ resistor between inter-unit cables 2 and 4. When the
voltage at both ends is measured, approximately 12–15 V DC must
be output and the multimeter pointer must bounce once every 8
seconds.
Or instead of measuring the voltage, you can insert an LED jig and
check that the LED flickers once every 8 seconds.
● For the “Test run” procedure, refer to 7.4 “How to Test Run the Air Conditioner.”
● If there are no problems with the above, then check the outdoor unit.
■ Checking the outdoor unit
No.
Control
Check items (unit operation)
1
Apply the rated voltage between outdoor
unit terminals 1 and 2.
• The control panel LED (red) must illuminate.
2
Short-circuit the outdoor unit COM terminal
to the T-RUN terminal.
• The compressor, fan motor, and 4-way valve must all turn ON.
● If there are no problems with the above, then check the indoor unit.
TEST/T-RUN terminals
● Using the TEST/T-RUN terminals
T-RUN
: Test run (compressor and fan motor turn ON).
TEST/MV : Compresses time to 1/60th (accelerates
operation by 60 times faster than normal).
(TEST)/MV T-RUN
■ Checking serial communications
→ Control 1
Initial selfdiagnostics
Short-circuit terminals 2 and 4 on
the indoor unit terminal base.
→ Control 2
Short-circuit terminals 2 and 4 on
the indoor unit terminal base.
No change
(1) illuminates
Change: (1) and (3) illuminate,
and (2) blinks.
Change: (1) and (3) illuminate,
and (3) blinks.
COM
Probable location of malfunction
Indoor unit circuit board failure
Change: (1) and (3) illuminate,
and (2) blinks.
Outdoor unit circuit board failure
Change: (1) illuminates
Failure (open circuit, contact failure, etc.)
in the inter-unit wiring
(1) and (3) illuminate,
and blinks.
Outdoor unit circuit board failure
● Turn the power OFF before performing short circuiting procedures.
● Refer to the previous pages when performing system self-diagnostics.
● So that the check can be made quickly, indicators blink at first communication after power ON.
● Before performing the above checks, perform “TEST run” operation, and check that the rated voltage is output to terminals 1 and 2 on
the outdoor unit. If it is not output, there is a failure related to the indoor unit power.
40
<Trouble Diagnosis of Outdoor Fan Motor>.....Applied for only AEI 35 AH outdoor unit
●
●
This outdoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil
resistance, and the following procedure should be used to check the motor.
To perform diagnosis, follow the instructions in “Checking the Outdoor Unit” on the previous page and set the
outdoor unit to Test Run mode (compressor ON, outdoor fan motor ON).
Important: (A) Turn OFF the power before connecting or disconnecting the motor connectors.
(B) When performing voltage measurement at the outdoor controller connector for (3) in the table
below, the DC motor will trip and voltage output will stop approximately 10 seconds after
operation is started. For this reason, to measure the voltage again, first turn OFF the outdoor
unit power, then follow the instructions in “Checking the Outdoor Unit” and again set the unit
to Test Run mode.
[Trouble symptom 1] The fan does not stop when the outdoor unit stops. → Outdoor unit controller trouble
[Trouble symptom 2] The fan motor does not rotate when the outdoor unit is operating.
(Diagnostic procedure)
* Disconnect the motor connectors and measure the voltage at the DC motor connectors on the outdoor
unit controller (3 locations).
Measurement location
(1) Vs-Gnd: Between pin 1 and pin 4
(2) Vcc-Gnd: Between pin 5 and pin 4
(3) Vsp-Gnd: Between pin 7 and pin 4
Normal value
DC 230 V or more
DC 14 V or more
After fluctuating 4 times between DC 1.0 – 4.3 V
(1 sec. ON) and DC 0 V (1 sec. OFF), the DC
motor trips.
(Diagnostic results)
All of the above measured values are normal. → Fan motor trouble (Replace the motor.)
Any one of the above measured values is not normal. → Outdoor unit controller trouble
(Replace the controller .)
(Reference)
DC motor connector pin arrangement
Pin 1: Vs (white)
Pin 2: Not used
Pin 3: Not used
Pin 4: Gnd (black)
Pin 5: Vcc (red)
Pin 6: FG (blue)
Pin 7: Vsp (yellow)
[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the outdoor
unit operates.
(There is trouble in the system that provides feedback of motor rotation speed from the
motor to the outdoor unit controller.)
[Trouble symptom 4] Fan motor rotation speed does not change during outdoor unit operation.
[Trouble symptom 5] Fan motor rotation speed varies excessively during outdoor unit operation.
(Remedy for symptom 3 to 5)
It is not possible to identify whether the trouble is outdoor unit controller trouble or motor trouble.
Therefore, first replace the outdoor unit controller, then (if necessary) replace the DC motor.
41
<Noise malfunction and electromagnetic interference>
An inverter A/C operates using pulse signal control and high frequencies. Therefore, it is susceptible to the effects of external
noise, and is likely to cause electromagnetic interference with nearby wireless devices.
A noise filter is installed for ordinary use, preventing these problems. However, depending on the installation conditions, these
effects may still occur. Please pay attention to the points listed below.
■ Noise malfunction
This refers to the application of high-frequency noise to the signal wires, resulting in abnormal signal pulses and malfunction.
Locations most susceptible to noise
1. Locations near broadcast stations where
there are strong electromagnetic waves
2. Locations near amateur radio (short wave)
stations
3. Locations near electronic sewing machines
and arc-welding machines
Trouble
Either of the following trouble may occur.
1. The unit may stop suddenly during
operation.
2. Indicator lamps may flicker.
Correction
(The fundamental concept is to make the
system less susceptible to noise.)
— Insulate for noise or
distance from the noise source. —
1. Use shielded wires.
2. Move unit away from the noise source.
■ Electromagnetic interference
This refers to noise generated by high-speed switching of the microcomputer and compressor. This noise radiates through
space and returns to the electric wiring, affecting any wireless devices (televisions, radios, etc.) located nearby.
Locations most susceptible to noise
1. A television or radio is located near the
A/C and A/C wiring.
2. The antenna cable for a television or
radio is located close to the A/C and A/C
wiring.
3. Locations where television and radio
signals are weak.
Trouble
Correction
1. Noise appears in the television picture, 1. Select a separate power source.
or the picture is distorted.
2. Keep the A/C and A/C wiring at least 1 meter
2. Static occurs in the radio sound.
away from wireless devices and antenna cables.
3. Change the wireless device’s antenna to a highsensitivity antenna.
4. Change the antenna cable to a BS coaxial cable.
5. Use a noise filter (for the wireless device).
6. Use a signal booster.
42
11. CHECKING ELECTRICAL COMPONENTS
11-1. Measurement of Insulation
Resistance
●
Ground wire
Clip
The insulation is in good condition if the resistance
exceeds 1MΩ.
11-1-1. Power supply cord
Probe
Clamp the grounding wire of power cord with the lead
clip of the insulation resistance tester and measure
the resistance by placing a probe on either of the two
power wires. (Fig. 1)
Insulation
tester
Fig. 1
Terminal plate
Then also measure the resistance between the
grounding and other power terminals. (Fig. 1)
11-1-2. Indoor unit
Probe
Clamp an aluminum plate fin or copper tube with the
lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw where power supply lines are connected on
the terminal plate. (Fig. 2)
Clip
11-1-3. Outdoor unit
Copper
tube or
metallic part
Clamp an aluminum plate fin or copper tube with the
lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw on the terminal plate. (Fig. 2)
Insulation
tester
Fig. 2
Note that the ground line terminal should be skipped
for the check.
Probe
11-1-4. Measurement of insulation
resistance for electrical parts
Disconnect the lead wires of the desired electric part
from terminal plate, capacitor, etc. Similarly disconnect the connector. Then measure the insulation
resistance. (Figs. 3 and 4)
Clip
Copper
tube or
metallic part
NOTE
Insulation
tester
Refer to Electric Wiring Diagram.
Fig. 3
If the probe cannot enter the poles because the hole
is too narrow then use a probe with a thinner pin.
From fan motor,
compressor and
other parts
Metallic
part
Probe
Clip
Insulation
tester
Fig. 4
43
11-2. Checking Continuity of Fuse
on PCB Ass’y
●
Remove the PCB Ass’y from the electrical component box. Then pull out the fuse from the PCB
Ass’y. (Fig. 5)
●
Check for continuity using a multimeter as shown
in Fig. 6.
Fuse
PCB Ass’y
Fig. 5
Fuse
Fig. 6
44
12. REFRIGERANT R410A:
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
12-1. Characteristics of New Refrigerant R410A
12-1-1. What is New Refrigerant R410A?
R410A is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture. Its
refrigeration capacity and energy efficiency are about the same level as the conventional refrigerant, R22.
12-1-2. Components (mixing proportions)
HFC32 (50%) / HFC125 (50%)
12-1-3. Characteristics
●
Less toxic, more chemically stable refrigerant
●
The composition of refrigerant R410A changes whether it is in a gaseous phase or liquid phase. Thus, when
there is a refrigerant leak the basic performance of the air conditioner may be degraded because of a change
in composition of the remaining refrigerant. Therefore, do not add new refrigerant. Instead, recover the
remaining refrigerant with the refrigerant recovery unit. Then, after evacuation, totally recharge the specified
amount of refrigerant with the new refrigerant at its normal mixed composition state (in liquid phase).
●
When refrigerant R410A is used, the composition will differ depending on whether it is in gaseous or liquid
phase, and the basic performance of the air conditioner will be degraded if it is charged while the refrigerant is
in gaseous state. Thus, always charge the refrigerant while it is in liquid phase.
CAUTION
Ether-type oil is used for compressor oil for R410A-type units, which is different
from the mineral oil used for R22. Thus more attention to moisture prevention and
faster replacement work compared with conventional models are required.
12-2. Checklist Before Servicing
Use a clutch-type flare tool for R410A or the conventional flare tool. Note that sizes of the resultant flares differ
between these two tools. Where a conventional flare tool is used, make sure to observe A Specification (amount
of extrusion) by using the flare spacer.
Diameter of tube (ø) D
Flare tool for R410A
Conventional flare tool (for R22)
ø6.35 (1/4")
0 – 0.5 mm
1.0 – 1.5 mm
ø9.52 (3/8")
0 – 0.5 mm
1.0 – 1.5 mm
Size of flare
øD
øD
Spacer
1.2
●
A Specification
A
Flare tool for R410A
A
Conventional flare tool (R22)
45
●
Tubing precautions
Refrigerant R410A is more easily affected by dust or moisture compared with R22, thus be sure to temporarily
cover the ends of the tubing with caps or tape prior to installation.
Never use 0.7mm-thick copper tubing or tubing which is less than 0.8mm in thickness, since air conditioners
with R410A are subject to higher pressure than those using R22 and R407C.
●
No addition of compressor oil for R410A
No additional charge of compressor oil is permitted.
●
No use of refrigerant other than R410A
Never use a refrigerant other than R410A.
●
If refrigerant R410A is exposed to fire
Through welding, etc., toxic gas may be released when R410A refrigerant is exposed to fire. Therefore, be
sure to provide ample ventilation during installation work.
●
Caution in case of R410A leak
Check for possible leak points with the special leak detector for R410A. If a leak occurs inside the room, immediately provide thorough ventilation.
46
12-3. Tools Specifically for R410A
●
For servicing, use the following tools for R410A
Tool Distinction
Tool Name
Tools specifically for R410A
●
Gauge manifold
●
Charging hose
●
Gas leak detector
●
Refrigerant cylinder
●
Charging cylinder
●
Refrigerant recovery unit
●
Vacuum pump with anti-reverse flow (*1)
(Solenoid valve-installed type, which prevents oil from flowing back into the
unit when the power is off, is recommended.)
●
Vacuum pump (*2) … can be used if the following adapter is attached.
●
Vacuum pump adapter (reverse-flow prevention adapter) (*3).
(Solenoid valve-installed adapter attached to a conventional vacuum pump.)
Tools which can be commonly used for R22,
R407C, and R410A
CAUTION
●
●
Electronic scale for charging refrigerant
●
Flare tool
●
Bender
●
Torque wrench
●
Cutter, reamer
●
Welding machine, nitrogen gas cylinder
●
The above tools specifically for R410A must not be used for R22 and R407C.
Doing so will cause malfunction of the unit.
●
For the above vacuum pump (*1, *2) and vacuum pump adapter (*3), those for
R22-type units can be used for R407C-type. However, they must be used exclusively for R410A and never alternately with R22 and R407C.
To prevent other refrigerants (R22, R407C) from being mistakenly charged to this unit, sizes of the service
ports and flare nuts of the narrow tube service valve and wide tube service valve have been altered.
12-4. Tubing Installation Procedures
When the tubes are connected, always apply HAB oil on the flare portions to improve the sealing of tubing.
The following is the HAB oil generally used:
Esso: ZERICE S32
NOTE
For details on tubing installation procedures, refer to the installation manuals attached to the
indoor unit and outdoor unit.
47
12-5. In Case of Compressor Malfunction
CAUTION
●
Should the compressor malfunction, be sure to make the switch to a replacement
compressor as quickly as possible.
●
Use only the tools indicated exclusively for R410A. ➞ See “12-3. Tools
Specifically for R410A.”
12-5-1. Procedure for replacing compressor
(1) Recovering refrigerant
● Any remaining refrigerant inside the unit should not be
released to the atmosphere, but recovered using the
refrigerant recovery unit for R410A.
(1) Recover refrigerant
OK
● Do not reuse the recovered refrigerant, since it will
contain impurities.
(2) Replacing Compressor
● Soon after removing seals of both discharge and suction tubes of the new compressor, replace it quickly.
(2) Replace compressor
OK
(3) Checking for sealing
● Use nitrogen gas for the pressurized gas, and never
use a refrigerant other than R410A. Also do not use
oxygen or any flammable gas.
(3) Check for sealing
OK
(4) Evacuation
● Use a solenoid valve-installed vacuum pump so
that even if power is cut off in the middle of evacuation
of air due to a power interruption, the valve will prevent the pump oil from flowing back.
(4) Evacuation
OK
● The equipment may be damaged if moisture remains
in the tubing, thus carry out the evacuation thoroughly.
● When using a vacuum pump with exhaust air volume
more than 25L/min. and ultimate vacuum pressure
rate of 0.05Torr:
Standard time for evacuation
Length of tubing
Less than 10 meters
More than 10 meters
Time
More than 10 minutes
More than 15 minutes
48
(5) Recharge
(5) Recharging
Configuration and characteristics of cylinders
Valve
● Be sure to charge the specified amount of
refrigerant in liquid state using the service port
of the wide tube service valve. The proper
amount is listed on the unit's nameplate.
When the entire amount cannot be charged all at
once, charge gradually while operating the unit
in Cooling Operation.
Liquid
CAUTION
Never charge a large amount
of liquid refrigerant at once to
the unit. This may cause damage to the compressor.
Single valve
Charge liquid refrigerant with
cylinder in up-side-down position.
● When charging with a refrigerant cylinder, use
an electronic scale for charging refrigerant. In
this case, if the volume of refrigerant in the cylinder becomes less than 20% of the fully-charged
amount, the composition of the refrigerant starts
to change. Thus, do not use the refrigerant if
the amount in the charging cylinder is less
than 20%.
Fig. 1
Valve
Also, charge the minimum necessary amount to
the charging cylinder before using it to charge
the air conditioning unit.
Liquid
Example:
In case of charging refrigerant to a unit requiring
0.76Kg using a capacity of a 10Kg cylinder, the
minimum necessary amount for the cylinder is:
Single valve (with siphon tube)
Charge with cylinder in normal position.
0.76 + 10 × 0.20 = 2.76Kg
Fig. 2
For the remaining refrigerant, refer to the
instructions of the refrigerant manufacturer.
● If using a charging cylinder, transfer the specified amount of liquid refrigerant from the refrigerant cylinder to the charging cylinder.
Charging
cylinder
Prepare an evacuated charging cylinder beforehand.
CAUTION
●
NO!
To prevent the composition
of R410A from changing,
never bleed the refrigerant
gas into the atmosphere
while transferring the refrigerant. (Fig. 3)
Do not use the refrigerant if the amount in
the charging cylinder is less than 20%.
Liquid
Open
Refrigerant
cylinder
Fig. 3
49
12-6. In Case Refrigerant is Leaking
CAUTION
Never attempt to charge additional refrigerant when refrigerant has been leaking
from the unit. Follow the procedure described below to locate points of leaks and
carry out repairs, then recharge the refrigerant.
(1) Detecting Leaks
● Use the detector for R410A to locate refrigerant leak
points.
(1) Detect leaks
OK
(2) Recovering refrigerant
● Never release the gas to the atmosphere; recover
residual refrigerant using the refrigerant recovery unit
for R410A, instead.
(2) Recover refrigerant
● Do not reuse the recovered refrigerant because its
composition will have been altered.
OK
(3) Welding leaking points
● Confirm again that no residual refrigerant exists in the
unit before starting welding.
(3) Weld leaking points
OK
● Weld securely using flux and wax for R410A.
● Prevent oxide film from forming inside the tubes utilizing substitution with nitrogen (N2) in the refrigerant
circuit of the unit. Leave ends of tubes open during
welding.
(4) Check for sealing
OK
(4) Checking for sealing
● Use nitrogen gas for the pressurized gas, and never
use a refrigerant other than R410A. Also do not use
oxygen or any flammable gas.
(5) Evacuation
OK
(5) Evacuation
● Use a solenoid valve-installed vacuum pump so
that even if power is cut off in the middle of evacuation
of air due to a power interruption, the valve will prevent
the pump oil from flowing back.
● The equipment may be damaged if moisture remains
in the tubing, thus carry out the evacuation thoroughly.
● When using a vacuum pump with exhaust air volume
more than 25L/min. and ultimate vacuum pressure rate
of 0.05Torr:
Standard time for evacuation
Length of tubing
Less than 10 m
More than 10 m
Time
More than 10 minutes
More than 15 minutes
(6) Recharging
● Recharge unit in the same manner explained on the
previous page “(5) Recharging.”
50
(6) Recharge
12-7. Charging Additional Refrigerant
12-7-1. When Tubes are Extended
●
Observe the proper amount of refrigerant as stated in this service manual or the installation manual that came
with the indoor unit. Charge additional refrigerant in liquid state only.
CAUTION
Never charge additional refrigerant if refrigerant is leaking from the unit. Follow
instructions given in “12-6. In Case Refrigerant is Leaking” and completely carry
out repairs. Only then should you recharge the refrigerant.
12-8. Retro-Fitting Existing Systems
12-8-1. Use of Existing Units
●
Never use new refrigerant R410A for existing units which use R22. This will cause the air conditioner to
operate improperly and may result in a hazardous condition.
12-8-2. Use of Existing Tubing
●
If replacing an older unit that used refrigerant R22 with a R410A unit, do not use its existing tubing. Instead,
completely new tubing must be used.
51
APPENDIX INSTRUCTION MANUAL
AWI 25 AHL + AEI 25 AH
AWI 35 AHL + AEI 35 AH
52
01_SAP-KRV93EH_EN.fm Page 2 Thursday, February 12, 2004 12:10 PM
Features
This air conditioner is an inverter type unit that automatically adjusts capacity as appropriate. Details on these
functions are provided below; refer to these descriptions when using the air conditioner.
•
Microprocessor Controlled Operation
The interior compartment of the remote control
unit contains several features to facilitate
automatic operation, easy logically displayed for
easy use.
•
Simple One-touch Wireless Remote Control
The remote control unit has several features to
facilitate automatic operation.
•
Automatic Switching between Cooling and
Heating
This unit automatically switches between cooling
operation and heating operation according to the
difference between the room temperature and the
temperature setting.
•
Hot Start Heating System
Right from the start, the air is warm and
comfortable. This system prevents any cold blasts
at the beginning while the heat pump is warming
up, or even defrosting.
•
Automatic Restart Function for Power Failure
Even when power failure occurs, preset
programmed operation can be reactivated once
power resumes.
•
24-Hour ON or OFF Timer
This timer can be set to automatically turn the
unit on or off at any time within a 24 hour period.
•
1-Hour OFF Timer
This timer can be set to automatically turn off the
unit at any time after one hour.
•
Night Setback
Pressing this button changes the setting of the
room temperature thermostat, allowing you to set
the temperature at whatever level that you find
comfortable.
•
High Power Operation
If not in Auto Operation, the unit operates at
maximum output for 30 minutes, regardless of the
desired temperature.
The fan speed is 1 step above “High”.
•
Automatic and 3-step Fan Speed
Auto/High/Medium/Low
•
Quiet Operation
The fan rotates slower than the fan speed setting
to provide a quieter operating sound.
•
Air Sweep Control
This function moves a flap up and down in the air
outlet, directing air in a sweeping motion around
the room and providing comfort in every corner.
•
Anti-Mold Filter
This unit is equipped with an anti-mold filter that
inhibits the growth of mold and bacteria.
•
Air Clean Filter
An air filter that eliminates unpleasant odors and
cleans the air is available.
•
Auto. Flap Control
This automatically sets the flap to the optimum
position during heating, cooling, and drying
operation.
2
OI-671-2-EG
01_SAP-KRV93EH_EN.fm Page 3 Thursday, February 12, 2004 12:10 PM
Contents
Page
Features ............................................................................................................ 2
Product Information........................................................................................... 3
Alert Symbols.................................................................................................... 3
Installation Location .......................................................................................... 4
Electrical Requirements .................................................................................... 4
Safety Instructions............................................................................................. 4
Names of Parts ................................................................................................. 5
Using the Remote Control Unit ....................................................................... 10
Operation with the Remote Control Unit ......................................................... 12
1. Automatic Operation .............................................................................. 12
2. Manual Operation .................................................................................. 13
3. Adjusting the Fan Speed........................................................................ 14
4. Fan Only................................................................................................. 14
5. Night Setback Mode............................................................................... 15
6. QUIET Mode .......................................................................................... 16
7. HIGH POWER Mode ............................................................................. 16
Special Remarks............................................................................................. 17
Setting the Timer............................................................................................. 18
Using the 1-Hour OFF Timer .......................................................................... 20
Tips for Energy Saving .................................................................................... 20
Adjusting the Airflow Direction ........................................................................ 21
Operation without the Remote Control Unit .................................................... 22
Care and Cleaning .......................................................................................... 22
Troubleshooting............................................................................................... 25
Operating Range............................................................................................. 25
Product Information
If you have problems or questions concerning your Air Conditioner, you will
need the following information. Model and serial numbers are on the nameplate
on the bottom of the cabinet.
Model No. ______________________
Serial No. ____________________
Date of purchase ________________________________________________
Dealer’s address ________________________________________________
Phone number ________________
DECLARATION OF CONFORMITY
This product is marked «
» as it satisfies EEC Directive No. 89/336/ EEC, 73/
23/EEC, 93/68/EEC and 92/31/EEC.
This declaration will become void in case of mis-usage and/or from non
observance though partial of Manufacturer’s installation and/or operating
instructions.
Alert Symbols
The following symbols used in this manual, alert you to potentially
dangerous conditions to users, service personnel or the appliance:
This symbol refers to a hazard or unsafe
practice which can result in severe
personal injury or death.
CAUTION
OI-671-3EG
This symbol refers to a hazard or unsafe
practice which can result in personal
injury or product or property damage.
3
01_SAP-KRV93EH_EN.fm Page 4 Thursday, February 12, 2004 12:10 PM
Installation Location
•
We recommend that this air conditioner be installed properly by
qualified installation technicians in accordance with the Installation
Instructions provided with the unit.
Before installation, check that the voltage of the electric supply in your home
or office is the same as the voltage shown on the nameplate.
•
•
•
Avoid:
Do not install this air conditioner where there are fumes or
flammable gases, or in an extremely humid space such as a
greenhouse.
Do not install the air conditioner where excessively high heatgenerating objects are placed.
To protect the air conditioner from heavy corrosion, avoid installing the
outdoor unit where salty sea water can splash directly onto it or in
sulphurous air near a spa.
Electrical Requirements
1. All wiring must conform to the local electrical codes. Consult your dealer or a
qualified electrician for details.
2. Each unit must be properly grounded with a ground (or earth) wire or
through the supply wiring.
3. Wiring must be done by a qualified electrician.
Safety Instructions
•
Read this Instruction Manual carefully before using this air
conditioner. If you still have any difficulties or problems, consult your
dealer for help.
This air conditioner is designed to give you comfortable room
conditions. Use this only for its intended purpose as described in this
Instruction Manual.
•
•
•
CAUTION
•
•
•
•
4
Never use or store gasoline or other flammable vapor or liquid near
the air conditioner — it is very dangerous.
This air conditioner has no ventilator for intaking fresh air from
outdoors. You must open doors or windows frequently when you
use gas or oil heating appliances in the same room, which consume
a lot of oxygen from the air. Otherwise there is a risk of suffocation
in an extreme case.
Do not turn the air conditioner on and off from the power mains
switch. Use the ON/OFF operation button.
Do not stick anything into the air outlet of the outdoor unit. This is
dangerous because the fan is rotating at high speed.
Do not let children play with the air conditioner.
Do not cool or heat the room too much if babies or invalids are
present.
OI-671-4-EG
01_SAP-KRV93EH_EN.fm Page 5 Thursday, February 12, 2004 12:10 PM
Names of Parts
Air intakes
INDOOR UNIT
Air outlet
Remote control unit
Drain hose
Refrigerant tubes
OUTDOOR UNIT
Air outlet
NOTE
This illustration is based on the external view of a standard model.
Consequently, the shape may differ from that of the air conditioner which you
have selected.
This air conditioner consists of an indoor unit and an outdoor unit. You can
control the air conditioner with the remote control unit.
Air Intake
Air from the room is drawn into this section and passes through air filters
which remove dust.
Air Outlet
Conditioned air is blown out of the air conditioner through the air outlet.
Remote Control Unit
Refrigerant Tubes
Drain Hose
Outdoor (Condensing) Unit
OI-671-5EG
The wireless remote control unit controls power ON/OFF, operation mode
selection, temperature, fan speed, timer setting, and air sweeping.
The indoor and outdoor units are connected by copper tubes through which
refrigerant gas flows.
Moisture in the room condenses and drains off through this hose.
The outdoor unit contains the compressor, fan motor, heat exchanger coil,
and other electrical components.
5
01_SAP-KRV93EH_EN.fm Page 6 Thursday, February 12, 2004 12:10 PM
Unit Display and Operation Button
INDOOR UNIT
IMPORTANT
OPERATION lamp
TIMER lamp
QUIET lamp
Avoid using radio equipment
such as mobile phone near
(within 1 m) the remote
control receiver. Some radio
equipment may cause
malfunction of the unit.
OPERATION button
If the trouble happens,
disconnect power and restart
the air conditioner after a few
minutes.
REMOTE CONTROL receiver
OPERATION button
REMOTE CONTROL receiver
This section picks up infrared signals from the remote control unit
(transmitter).
When the remote control cannot be used, pressing this button enables
heating and cooling operation.
Each time this button is pressed, the type of operation conducted is indicated
by the changing color of the OPERATION lamp. Press the button and select
the lamp color that suits your preference for operation.
Cooling operation
(green)
OPERATION lamp
Stop
(lamp off)
This lamp lights when the system is in the continuous AUTO (red or green),
HEAT (red), DRY (orange), COOL (green) and FAN (green) mode.
The OPERATION lamp lights up red and orange alternately when the system
is defrosting.
TIMER lamp
This lamp lights when the system is being controlled by the timer.
QUIET lamp
This lamp lights during operation in the QUIET mode.
NOTE
6
Heating operation
(red)
The unit’s display lamps are dimmed during operation in the NIGHT
SETBACK mode.
OI-671-6-EG
01_SAP-KRV93EH_EN.fm Page 7 Thursday, February 12, 2004 12:10 PM
Remote Control Unit (Display)
Displayed when transmitting data
Displayed when indoor unit sensor
is in use
Displayed when setting
temperature
Displayed when temperature is
shown
Displayed when setting timer
Displayed when the
time display is set to
12-hour time.
Symbols
(1) Operation mode
AUTO .....................................
HEAT ......................................
MILD DRY ..............................
COOL .....................................
FAN ........................................
(4) Timer
24-hour clock with ON/OFF
program Timer........................
ON Timer................................
OFF Timer. .............................
1-hour OFF Timer...................
(5) NIGHT SETBACK ..................
(2) Fan speed
(6) Confirmation of transmission..
Automatic operation ...............
(7) Auto. flap indication ................
HIGH .....................................
Flap angle indication ..............
MEDIUM.................................
Sweep indication ....................
LOW .......................................
(8) High power operation .............
(3) Temperature setting
16 – 30 °C
When set to 28 °C
temperature indication............
OI-671-7EG
(9) Quiet operation.......................
7
01_SAP-KRV93EH_EN.fm Page 8 Thursday, February 12, 2004 12:10 PM
Remote Control Unit
Sensor
Transmitter
(Cover closed)
Display
ON/OFF operation button
QUIET button
1 HR. TIMER button
Temperature setting buttons (TEMP.)
MODE selector button
FAN SPEED selector button
NIGHT SETBACK button
FLAP button
ON TIME
setting
buttons
HIGH POWER button
Advance button
Advance button
Return button
Return button
OFF TIME
setting
buttons
CANCEL button
CLOCK button
SENSOR button
Time display selector button
ACL button
ADDRESS switch
Temperature display
selector button
NOTE
Transmitter
When you press the buttons on the remote control unit, the
mark appears
in the display to transmit the setting changes to the receiver in the air
conditioner.
Sensor
A temperature sensor inside the remote control unit senses the room
temperature.
Display
Information on the operating conditions is displayed while the remote control
unit is switched on. If the unit is turned off, FLAP setting and FAN SPEED
setting are not displayed.
QUIET button
ON/OFF operation button
1 HR. TIMER button
(1-HOUR OFF TIMER)
8
The illustration above pictures the remote control unit after the cover has
been opened.
: When you press this button, the fan rotates slower than the fan
speed setting to provide a quieter operating sound.
This button is for turning the air conditioner on and off.
: When you press this button, regardless of whether the unit is
operating or stopping, the unit operates for one hour and then shuts
down.
OI-671-8-EG
01_SAP-KRV93EH_EN.fm Page 9 Thursday, February 12, 2004 12:10 PM
Remote Control Unit (continued)
Temperature setting buttons
(TEMP.)
MODE selector button
Press the
button to increase the set temperature.
Press the
button to reduce the set temperature.
For details, see Automatic operation and Manual operation.
Use this button to select AUTO, HEAT, DRY, COOL or FAN mode.
(AUTO)
: When this setting is selected, the air conditioner calculates the
difference between the thermostat setting and the room temperature
and automatically switches to the ‘‘COOL’’ or ‘‘HEAT’’ mode as
appropriate.
(HEAT)
: The air conditioner makes the room warmer.
(DRY)
(COOL)
(FAN)
FAN SPEED selector button
: The air conditioner reduces the humidity in the room.
: The air conditioner makes the room cooler.
: The air conditioner works only as a circulation fan.
: The air conditioner automatically decides the fan speeds.
: High fan speed
: Medium fan speed
: Low fan speed
NIGHT SETBACK button
For details, see “5. Night Setback Mode”. When you press this button in the
HEAT, DRY or COOL mode, the
mark appears in the display, and the
remote control unit will automatically adjust the set temperature to save
energy.
FLAP button
Press this button either to select the setting of the airflow direction to the
auto. flap in each mode or one of the six possible positions manually or to
select the sweep function which moves the flap up and down automatically.
: Auto flap setting: If selected in a heating operation, the flap is set to
position (3) in the following chart. If selected in a cooling or dry
operation, the flap is set at position (7) in the following chart.
: The airflow direction can be set manually. (six positions)
: The flap moves up and down automatically.
NOTE
When you press the FLAP button, the air flow direction will be changed one
by one as follows.
SWING
HIGH POWER button
: If this button is pressed during HEAT, DRY, COOL or FAN operation,
the unit operates at maximum output for 30 minutes, regardless of the
desired temperature.
The fan speed is 1 step above “High”.
ON TIME/OFF TIME setting
buttons
No display: The timer does not operate.
: The air conditioner starts at the set time.
: The air conditioner stops at the set time.
: The air conditioner stops and starts, or starts and stops, at
the set times every day. For details, see “Setting the Timer”.
OI-671-9EG
9
01_SAP-KRV93EH_EN.fm Page 10 Thursday, February 12, 2004 12:10 PM
Remote Control Unit (continued)
SENSOR button
NOTE
When you press this button (use a small-tipped object such as a ballpoint
pen), the
mark will appear at the display. And the room temperature is
detected by the sensor which is built into the indoor unit and the air
conditioner is controlled accordingly.
If the remote control is located near a heat source, such as a space heater or
in direct sunlight, press the SENSOR button to switch to the sensor on the
indoor unit.
Temperature Display Selector
button
This switches the temperature display between °C and °F.
Time Display Selector button
This switches the time display between 24-hour time and 12-hour time.
ACL button (ALL CLEAR)
Puts the remote control unit into pre-operation status. Always press this
button after replacing the batteries.
ADDRESS switch
•
•
NOTE
The address switch changes to prevent mixing of signals from remote
control units when two air conditioners are installed next to each other.
Normally, the address switch is set to A. For more information, please
contact the dealer where you made the purchase.
Normally, the tabs on the remote control unit should not be bent.
The remote control unit sends the temperature signal to the air conditioner regularly at five minute
intervals. If the signal from the remote control unit stops for more than 15 minutes due to the loss of
the remote control unit or other trouble, the air conditioner will switch to the temperature sensor which
is built into the indoor unit and control the room temperature. In these cases, the temperature around
the remote control unit may differ from the temperature detected at the air conditioner’s position.
Using the Remote Control Unit
How to Install Batteries
1. Slide the cover in the direction
indicated by the arrow and remove it.
2. Install two AAA alkaline batteries.
Make sure the batteries point in the
direction marked in the battery
compartment.
3. Use a thin object such as the tip of a
pen to press the ACL button.
ACL button
NOTE
•
•
•
•
10
The batteries last about six months, depending on how much you
use the remote control unit. Replace the batteries when the remote
control unit’s display fails to light, or when the remote control cannot
be used to change the air conditioner’s settings.
Use two fresh leak-proof type-AAA alkaline batteries.
In replacing batteries, follow the instructions as mentioned in the
sub-section “How to Install Batteries”.
If you do not use the remote control unit more than 1 month, take out
the batteries.
OI-671-10-EG
01_SAP-KRV93EH_EN.fm Page 11 Thursday, February 12, 2004 12:10 PM
Using the Remote Control Unit (continued)
How to Use the Remote
Control Unit
When using the remote control unit, always point the unit’s transmitter head
directly at the air conditioner’s receiver.
Air conditioner
(Indoor unit)
Receiver
(Transmitter head)
Remote control
unit
Remote Control Unit
Installation Position
DO NOT
Mounting the Remote Control
Unit
The remote control unit may be operated either from a non-fixed position or
from a wall-mounted position. To ensure that the air conditioner operates
correctly, DO NOT install the remote control unit in the following places:
•
•
•
•
•
•
•
In direct sunlight
Behind a curtain or other places where it is covered
More than 8 m away from the air conditioner
In the path of the air conditioner’s airstream
Where it may become extremely hot or cold
Where it may be subject to electrical or magnetic noise
Where there is an obstacle between the remote control unit and air
conditioner (since a check signal is sent from the remote control unit every
5 minutes)
Before mounting the remote control unit, press the ON/OFF operation button
at the mounting location to make sure that the air conditioner operates from
that location. The indoor unit should make a beeping sound to indicate that it
has received the signal.
Rear side
Remote control
unit mount
Press
Mounting screws
4 x 16 (included)
Set in
place
•
Hole
To prevent loss of the remote control
unit, you can connect the remote
control unit to the mount by passing
a string through the remote control
unit and attachment hole.
To take out the remote control unit, pull it forward.
When Holding the Remote
Control Unit
•
•
OI-671-11EG
When using the remote control unit and during air conditioner operation,
the transmitter on the remote control unit should be pointed toward the
receiver on the indoor unit.
Make sure that there are no objects between the remote control unit and
receiver which could block the signal.
11
01_SAP-KRV93EH_EN.fm Page 12 Thursday, February 12, 2004 12:10 PM
Operation with the Remote Control
Unit
1. Automatic Operation
This unit automatically switches between cooling operation and heating
operation according to the difference between the room temperature and the
temperature setting.
STEP 2
STEP 1
NOTE
Check that the circuit breaker on the power panel is turned on.
Once
mode is selected and the unit is preset by following the steps below,
you can have the air conditioner automatically bring the room to the desired
temperature simply by pressing the ON/OFF operation button.
STEP 1
Press the MODE selector button to
STEP 2
Press the ON/OFF operation button.
.
To stop the air conditioner, press the ON/OFF operation button again.
NOTE
12
•
To change the temperature setting; press the temperature setting buttons
and change the setting to the desired temperature.
OI-671-12-EG
01_SAP-KRV93EH_EN.fm Page 13 Thursday, February 12, 2004 12:10 PM
Operation with the Remote Control Unit (continued)
2. Manual Operation
STEP 2
STEP 3
STEP 1
STEP 4
STEP 5
NOTE
Check that the circuit breaker on the power panel is turned on and that the
operation selector of the indoor unit is in the ON position.
If the automatic operation settings of the unit do not meet your needs, press
the setting buttons as described below and change the settings as desired.
STEP 1
Press the MODE selector button and select the desired
mode.
For heating operation
→
For dehumidifying operation
→
For cooling operation
→
For fan only operation
→
STEP 2
To start the air conditioner, press the ON/OFF operation
button.
STEP 3
Press the TEMP. setting buttons to change the temperature
setting to the desired temperature.
Adjustable temperature range:
30 °C max.
16 °C min.
or
86 °F max.
60 °F min.
STEP 4
Set the FAN SPEED selector button to the setting you want.
STEP 5
Press the FLAP button and set the airflow direction as
desired.
(Refer to “Adjusting the Airflow Direction” on page 21.)
To stop the air conditioner, press the ON/OFF operation button again.
OI-671-13EG
13
01_SAP-KRV93EH_EN.fm Page 14 Thursday, February 12, 2004 12:10 PM
Operation with the Remote Control Unit (continued)
NOTE
•
Choose the best position in the room for the remote control unit, which
also acts as the sensor for room comfort and transmits the operating
instructions. Once you’ve found this best position, always keep the remote
control unit there.
•
This appliance has a built-in 5-minute time delay circuit to ensure reliable
operation. When the operation button is pressed, the compressor will start
running within three minutes. In the event of power failure, the unit will
stop.
3. Adjusting the Fan Speed
A. Automatic fan speed
Simply set the FAN SPEED selector button to the
position.
This automatically sets the best fan speed for the room temperature.
B. Manual fan speed
If you want to adjust fan speed manually during operation, just set the FAN
SPEED selector button as desired. [
,
, or
]
4. Fan Only
STEP 2
STEP 1
STEP 3
If you want to circulate air without any temperature control, follow these steps:
14
STEP 1
Press the MODE selector button to switch to the fan mode
.
STEP 2
Press the ON/OFF operation button.
STEP 3
Press the FAN SPEED selector button to select the fan
speed of your choice (
,
or
).
OI-671-14-EG
01_SAP-KRV93EH_EN.fm Page 15 Thursday, February 12, 2004 12:10 PM
Operation with the Remote Control Unit (continued)
5. Night Setback Mode
Night Setback Mode is used for saving energy.
Press the NIGHT SETBACK button while operation.
The
mark appears in the display.
To release the night setback function, press the NIGHT SETBACK button
again.
A. In Cooling and DRY
Mode: ( and )
When the night setback mode is selected, the air conditioner automatically
raises the temperature setting 1 °C when 30 minutes have passed after the
selection was made, and then another 1 °C after another 30 minutes have
passed, regardless of the indoor temperature when night setback was
selected. This enables you to save energy without sacrificing comfort. This
function is convenient when gentle cooling is needed.
1 °C (2 °F)
Setting
temperature
1 °C (2 °F)
Press the NIGHT
SETBACK button
B. In Heating Mode: (
)
30 min.
30 min. Time
When the night setback mode is selected, the air conditioner automatically
lowers the temperature setting 2 °C when 30 minutes have passed after the
selection was made, and then another 2 °C after another 30 minutes have
passed, regardless of the indoor temperature when night setback was
selected. This enables you to save energy without sacrificing comfort. This
function is convenient when gentle heating is needed.
Setting
temperature
2 °C (4 °F)
2 °C (4 °F)
Press the NIGHT
SETBACK button
OI-671-15EG
30 min.
30 min.
Time
15
01_SAP-KRV93EH_EN.fm Page 16 Thursday, February 12, 2004 12:10 PM
Operation with the Remote Control Unit (continued)
6. QUIET Mode
QUIET Mode is used to reduce the fan sound of the indoor unit.
Press the QUIET button.
The
mark appears in the display.
To cancel, press QUIET button again.
•
•
In QUIET Mode, the fan rotates at a slower speed than the fan speed
setting.
If the unit is already operating with a very low (LL) airflow, the fan sound
may not change even if the QUIET button is pressed.
7. HIGH POWER Mode
HIGH POWER mode can be used to increase the output of the indoor unit for
all operation modes except automatic operation.
Press the HIGH POWER button.
The
mark appears in the display.
To cancel, press HIGH POWER button again.
•
•
•
When the HIGH POWER button is pressed, the unit operates at maximum
output for 30 minutes, regardless of the desired temperature. The fan
speed is 1 step above “High”.
HIGH POWER Mode cannot be used when the operation mode is
Automatic Operation.
QUIET Mode and HIGH POWER Mode cannot be used at the same time.
NOTE
•
•
16
When set to High fan speed during heating operation, the
fan runs at High fan speed even though the
mark is
displayed.
Depending on the operating conditions, the fan speed may
be increased by a small amount only.
OI-671-16-EG
01_SAP-KRV93EH_EN.fm Page 17 Thursday, February 12, 2004 12:10 PM
Special Remarks
‘‘DRY’’ (
) Operation
How it works?
•
•
•
Heating (
Once the room temperature reaches the level that was set, the unit’s
operation frequency is changed automatically.
During DRY operation, the fan speed is automatically runs at lower speed
for providing a comfortable breeze.
‘‘DRY’’ operation is not possible if the indoor temperature is 15 °C or less.
) Operation
Heating performance
•
Because this air conditioner heats a room by drawing in the heat of the
outside air (heat pump system), the heating efficiency will fall off when the
outdoor temperature is very low. If sufficient heat cannot be obtained with
this air conditioner, use another heating appliance together with it.
Defrosting
•
When the outdoor temperature is low, frost or ice may form on the heat
exchanger coil, reducing heating performance. When this happens, a
microcomputer defrosting system operates. At the same time, the fan on
the indoor unit stops and the OPERATION lamp lights up red and orange
alternately until defrosting is completed. Heating operation restarts after
several minutes. (This interval will vary slightly depending upon the
outdoor temperature and the way in which frost forms.)
Cold draft prevention
•
For several minutes after the start of heating operation, the indoor fan runs
at lower speed until the indoor heat exchanger coil has warmed up
sufficiently. However, the fan may remain stopped when the room
temperature is low. This is because the COLD DRAFT PREVENTION
SYSTEM is operating.
•
In the event of power failure, the unit will stop. When the power is
resumed, the unit will restart automatically within five minutes by the
remote control unit.
•
In heating or cooling operation, any plastic parts may expand or shrink due
to a sudden temperature change. In this event, a clicking sound may occur.
This is normal, and the sound will soon disappear.
•
The remote control unit sends the setting condition to the air conditioner
regularly at five minute intervals.
Power failure during
operation
Clicking Sound
Clicking sound is heard from
the air conditioner
Remote Control Unit
OI-671-17EG
17
01_SAP-KRV93EH_EN.fm Page 18 Thursday, February 12, 2004 12:10 PM
Setting the Timer
NOTE
1. How to set the present
time
In the descriptions below, the following settings are used for the temperature
and time indicator selector button on the bottom front section of the remote
control.
• Temperature: °C
• Time: AM, PM
(Example) To set to 10:30 pm.
Operation
2. How to set the OFF time
18
Indication
1. Press the CLOCK button once if
the time indicator is not flashing.
The time indication alone flashes.
2. Press the Advance, Return ( ,
) button until PM 10:30 is
displayed.
The time can be set in 1-minute
increments. Holding down the
button advances the time rapidly in
10-minute increments.
3. Press the CLOCK button again.
This completes the setting of the
current time.
(Example) To stop the air conditioner at 11:00 am.
1. Press the OFF TIME setting
button once.
The timer
indication is
displayed, and the present OFF
time is shown.
2. Press the Advance, Return ( ,
) button until AM 11:00 is
displayed.
The timer
indication blinks.
The time can be set in 10-minute
increments. Holding down the
button advances the time rapidly in
10-minute increments.
3. Wait a few seconds, and then
the setting is complete.
The timer
indication stops
blinking and the present time is
displayed.
OI-671-18-EG
01_SAP-KRV93EH_EN.fm Page 19 Thursday, February 12, 2004 12:10 PM
Setting the Timer (continued)
3. How to set the ON time
(Example) To start operation at 7:10 am.
Operation
4. How to set DAILY ON/OFF
REPEAT timer
Indication
1. Press the ON TIME setting
button once.
The timer
indication is
displayed, and the present ON time
is shown.
2. Press the Advance, Return ( ,
) button until AM 7:10 is
displayed.
The timer
indication blinks.
The time can be set in 10-minute
increments. Holding down the
button advances the time rapidly in
10-minute increments.
3. Wait a few seconds, and then
the setting is complete.
The timer
indication stops
blinking and the present time is
displayed.
(Example) To start operation at 7:10 am. and stop the air conditioner at 11:00
am.
10:30 pm.
Present time
7:10 am.
ON
1. Set the timer ON/OFF times as
shown in 2-1, 2, 3 and 3-1, 2, 3.
NOTE
•
•
•
To cancel a timer program
NOTE
The present time 10:30 pm. and
are displayed.
The ON/OFF combination timer uses the current time as
the reference, and it is activated starting from whichever
set time comes first.
With the ON/OFF combination timer, the settings are
repeated every day.
You can check the timer ON/OFF times after you have set
them by pressing the ON TIME and OFF TIME setting
buttons.
•
•
Press the CANCEL button.
When either an ON or OFF timer is to be canceled, press the button
corresponding to the timer whose program is to be canceled, and then
press the CANCEL button.
•
The airflow direction, fan speed and temperature setting can be changed
after a timer program has been set even when the unit is stopped. Even
when operation is stopped during an ON timer program, the unit will start
operating when the set time is reached provided that the program is not
canceled.
When the ON timer and OFF timer are set to the same time, the timer
operates as if it is turned off.
•
OI-671-19EG
11:00 am.
OFF
19
01_SAP-KRV93EH_EN.fm Page 20 Thursday, February 12, 2004 12:10 PM
Using the 1-Hour OFF Timer
1. 1-Hour OFF Timer
This function causes the unit to operate for one hour and then stop,
regardless of whether the unit is on or off when this button is pressed.
The
indicator in the display indicates that this function is operating.
Setting procedure:
Regardless of whether the unit is operating or stopped, press the 1 HR.
TIMER button.
appears in the display.
Cancellation procedure:
Press the ON/OFF operation button to turn the unit off, wait for the unit to stop
operating, and then press the ON/OFF operation button again.
The 1-Hour Timer function is now cancelled and the unit operates normally.
NOTE
•
•
2. Operation together with the
DAILY ON/OFF REPEAT Timer
If, while the 1-Hour Timer function is operating, the 1HR. TIMER button is
pressed once to cancel the function and then again, the unit continues to
operate for one hour from that point in time and then stops.
It is not possible to use the OFF Timer and 1-Hour OFF Timer together.
Whichever function is set last takes precedence. If the 1 HR. TIMER
button is pressed while the TIMER OFF function operates, the OFF Timer
is cancelled and the unit will stop operating one hour later.
The 1-Hour OFF Timer setting is given priority over the DAILY ON/OFF
REPEAT setting.
Tips for Energy Saving
Do not
•
•
Do
•
•
20
Block the air intake and outlet of the unit. If they are obstructed, the
unit will not work well, and may be damaged.
Let direct sunlight into the room. Use sunshades, blinds or curtains. If the
walls and ceiling of the room are warmed by the sun, it will take longer to
cool the room.
Always try to keep the air filter clean. (Refer to “Care and Cleaning”.) A
clogged filter will impair the performance of the unit.
To prevent conditioned air from escaping, keep windows, doors and any
other openings closed.
OI-671-20-EG
01_SAP-KRV93EH_EN.fm Page 21 Thursday, February 12, 2004 12:10 PM
Adjusting the Airflow Direction
1. Horizontal
CAUTION
2. Vertical
The horizontal airflow can be adjusted by moving the vertical vanes with your
hands to the left or right.
When the humidity is high, the vertical vanes should be in the front
position during the cooling or dehumidifying operation. If the vertical
vanes are positioned all of the way to the right or left, condensation
may begin to form around the air vent and drip down.
The vertical airflow can be adjusted by moving the flap with the remote
control unit. Do not move the flap with your hands. Confirm that the remote
control unit has been turned on. Use the FLAP button to set either the sweep
function or one of the six airflow direction settings.
COOL
DRY
FAN
SWEEP
SWEEP
HEAT
A. Sweep function
The flap starts moving up and down to
deliver air over the sweep range.
C. Auto flap function
The flap is set to the recommended
position.
NOTE
CAUTION
•
•
The flap automatically closes when the unit is off.
During the heating operation, the fan speed will be very low and the flap
will be in the horizontal position (position ) until the air being blown out
of the unit begins to warm. Once the air warms up, the flap position and
fan speed change to the settings specified with the remote control.
•
Use the FLAP button on the remote control to adjust the position of
the flap. If you move the flap by hand, the flap position according to
the remote control and the actual flap position may no longer match.
If this should happen, shut off the unit, wait for the flap to close, and
then turn on the unit again; the flap position will now be normal
again.
Do not have the flap pointed down during cooling operation.
Condensation may begin to form around the air vent and drip down.
•
OI-671-21EG
B. Setting the airflow manually
Referring to the above illustration, use the
FLAP button to set the airflow direction
within the range used during the heating,
cooling, or dehumidifying operation.
21
01_SAP-KRV93EH_EN.fm Page 22 Thursday, February 12, 2004 12:10 PM
Operation without the Remote
Control Unit
INDOOR UNIT
If you have lost the remote control unit or it has trouble, follow the steps
below.
When the air conditioner is not running
Each time the OPERATION button is pressed, the type of operation
conducted is indicated by the changing color of the OPERATION lamp. Press
the button and select the lamp color that suits your preference for operation.
Cooling operation
(green)
Heating operation
(red)
Stop
(lamp off)
OPERATION button
NOTE
The temperature is set to the room temperature minus 2°C during the cooling
operation and to the room temperature plus 2°C during the heating operation,
and the fan speed and flap are set to Auto.
Care and Cleaning
1. For safety, be sure to turn the air conditioner off and also to
disconnect the power before cleaning.
2. Do not pour water on the indoor unit to clean it. This will damage the
internal components and cause an electric shock hazard.
Casing and Grille (Indoor Unit)
Clean the casing and grille of the indoor unit with a vacuum cleaner brush, or
wipe them with a clean, soft cloth.
If these parts are stained, use a clean cloth moistened with a mild liquid
detergent. When cleaning the grille, be careful not to force the vanes out of
place.
CAUTION
22
1. Never use solvents, or harsh chemicals when cleaning the indoor
unit. Do not wipe the plastic casing using very hot water.
2. Some metal edges and the fins are sharp and may cause injury if
handled improperly; be especially careful when you clean these
parts.
3. The internal coil and other components of the outdoor unit must be
cleaned every year. Consult your dealer or service center.
OI-671-22-EG
01_SAP-KRV93EH_EN.fm Page 23 Thursday, February 12, 2004 12:10 PM
Care and Cleaning (continued)
Anti-Mold Filter
How to remove the anti-mold
filter
The anti-mold filter behind the air intake grille should be checked and cleaned
at least once every two weeks.
1. Grasp both ends of the air
intake grille, and remove it
by opening towards the
front and pulling towards
you.
Air intake grille
2. Remove the anti-mold filter
attached to the rear of the
air intake grille.
Cleaning
How to replace the anti-mold
filter
Anti-mold filter
Use a vacuum cleaner to remove light dust. If there is sticky dust on the filter,
wash the filter in lukewarm, soapy water, rinse it in clean water, and dry it.
1. With the FRONT mark of
the anti-mold filter at the
front, align the two
indentions near the mark
with the hooks at the rear
of the air intake grille, and
then mount the anti-mold
filter.
Anti-mold filter
FRONT mark
Hook
2. Allow the edge of the air
intake grille to slide into the
top of the indoor unit, and
then insert it all the way
inside.
3. Press in the bottom right
and left corners of the air
intake grille to attach the
indoor unit.
NOTE
OI-671-23EG
Groove
Pin
Air intake grille
Air intake grille
Attach so that the round pins at the top right and left corners of the air intake
grille are inserted into the grooves at the top right and left of the indoor unit.
23
01_SAP-KRV93EH_EN.fm Page 24 Thursday, February 12, 2004 12:10 PM
Care and Cleaning (continued)
Air Clean Filter
The air clean filter removes dust and dirt from the air, and reduces odors and
smoke from tobacco.
This air clean filter cannot remove harmful gases or vapors nor ventilate
air in the room. You must open doors or windows frequently when you
use gas or oil heating appliances. Otherwise there is a risk of
suffocation in extreme cases.
How to install the air clean
filter
The air clean filter needs to be installed behind the air intake grille.
1. Remove the air intake grille.
2. Install the air clean filter in
the position shown in the
figure.
3. Remount the air intake
grille.
Air clean
filter
NOTE
Cleaning the main unit and
remote control unit
•
•
In general, the filter should be replaced once every three months.
Dirty air clean filters cannot be washed and reused. Purchase a
replacement filter at your local dealer.
•
•
Wipe clean using a soft, dry cloth.
To remove stubborn dirt, moisten a cloth in warm water no hotter than
40 °C, wring thoroughly, and then wipe.
The air intake grille can be removed in order to wash it with water.
•
Removing and remounting the
air intake grille
CAUTION
Washing the grille with water
Refer to “How to remove the anti-mold filter” and “How to replace the antimold filter” on page 23.
When using a footstool or the like, be careful not to let it tip over.
•
•
24
Clean the grille gently using a soft sponge, or the like. Then wipe away any
remaining moisture.
Neutral detergent may be used to remove stubborn dirt. Then rinse
thoroughly with water and wipe away any remaining moisture.
OI-671-24-EG
01_SAP-KRV93EH_EN.fm Page 25 Thursday, February 12, 2004 12:10 PM
Troubleshooting
If your air conditioner does not work properly, first check the following points before requesting service. If it still does
not work properly, contact your dealer or service center.
Trouble
Air conditioner does not run at all.
Possible Cause
Remedy
1. Power failure.
1. Restore power.
2. Leakage circuit breaker tripped.
2. Contact service center.
3. Line voltage is too low.
3. Consult your electrician or dealer.
4. Batteries in remote control unit
have run down.
4. Replace batteries.
OPERATION lamp blinks and air
conditioner does not operate.
Trouble in system.
Contact service center.
Compressor runs but soon stops.
Obstruction in front of condenser coil.
Remove obstruction.
Poor cooling (or heating)
performance.
1. Dirty or clogged air filter.
1. Clean air filter to improve airflow.
2. Heat source or many people in
room.
2. Eliminate heat source if possible.
3. Doors and/or windows are open.
3. Shut them to keep the heat (or
cold) out.
4. Obstacle near air intake or air
discharge port.
4. Remove it to ensure good airflow.
5. Thermostat is set too high for
cooling (or too low for heating).
5. Set the temperature lower (or
higher).
6. (Outdoor temperature is too low for
heating.)
6. (Consult your dealer or try to use
another heat appliance.)
Clicking sound is heard from the air
conditioner.
In heating or cooling operation, any
plastic parts may expand or shrink
due to a sudden temperature change.
In this event, a clicking sound may
occur.
This is normal, and the sound will
soon disappear.
OPERATION lamp lights but outdoor
unit will not run.
1. The use of cellular phones near
the air conditioner may cause
disturbance to its normal
operation.
1. Turn off the power then restart the
air conditioner after a while.
2. Consult your dealer.
Operating Range
The air conditioner is operable within the temperature ranges as listed below:
COOLING
HEATING
OI-671-25EG
Temperature
Indoor air temperature
Outdoor air temperature
Max.
32 °C DB / 23 °C WB
43 °C DB
Min.
19 °C DB / 14 °C WB
19 °C DB
Max.
27 °C DB
24 °C DB / 18 °C WB
Min.
16 °C DB
–8 °C DB/ –9 °C WB
25
ARGOCLIMA SPA
GALLARATE-ITALY