Argo AW720HL User manual

TECHNICAL DATA
& SERVICE MANUAL
INDOOR UNIT: AW720HL
AW726HL AW726CL
AW735HL AW735CL
AW726HLF AW726CLF
AW735HLF AW735CLF
SPLIT SYSTEM AIR CONDITIONER
AW726CLF 38.7004.065
AW735CLF 38.7004.066
AW726HLF 38.7004.063
AW735HLF 38.7004.064
COOLING MODELSHEAT PUMP MODELS
0.8180.523.2 January 2010
AW726HL 38.7004.056
AW735HL 38.7004.057
AW726CL 38.7004.041
AW735CL 38.7004.042
Model No. Product Code No.
AW720HL 38.7004.055

IMPORTANT!
Please read before installation
This air conditioning system meets strict safety and operating
standards.
For the installer or service person, it is important to install or
service the system so that it operates safely and efficiently.
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.
•The unit must be supplied with a dedicated electrical line.
This symbol refers to a hazard or unsafe practice which can result
in severe personal injury or death.
This symbol refers to a hazard or unsafe practice which can result
in personal injury or product or property damage.
If necessary, get help
These instructions are all you need for most installation sites and
maintenance conditions.
If you require help for a special problem, contact our sale/service
outlet or your certified dealer for additional instructions.
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.
SPECIAL PRECAUTIONS
• During installation, connect before the refrigerant system and
then the wiring one; proceed in the reverse orden when removing
the units.
When wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE
PERSONAL INJURY OR DEATH. ONLY A QUALIFIED,
EXPERIENCED ELECTRICIANS SHOULD ATTEMPT
TO WIRE THIS SYSTEM.
• Do not supply power to the unit until all wiring and tubing are
completed or reconnected and checked, to ensure the grounding.
• 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 and death.
•Ground the unit following local electrical codes.
• The Yellow/Green wire cannot be used for any connection
different from the ground connection.
• Connect all wiring tightly. Loose wiring may cause overheating
at connection points and a possible fire hazard.
• Do not allow wiring to touch the refrigerant tubing, compressor,
or any moving parts of the fan.
• Do not use multi-core cable when wiring the power supply and
control lines. Use separate cables for each type of line.
When transporting
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 aluminium fins on
the air conditioner can cut your fingers.
When installing...
... In a ceiling or wall
Make sure the ceiling/wall is strong enough to hold the unit-weight.
It may be necessary to build a strong wooden or metal frame to
provide added support.
... In a room
Properly insulate any tubing run inside a room to prevent
"sweating", which can cause dripping and water damage to walls
and floors.
... In moist or uneven locations
Use a raised concrete base to provide a solid level foundation for
the outdoor unit.
This prevents damage and abnormal vibrations.
... In area with strong 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.
When connecting refrigerant tubing
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of the flare
and union tubes before connecting them; screw by hand and
then tighten the nut with a torque wrench for a leak-free
connection.
• Check carefully for leaks before starting the test run.
NOTE:
Depending on the system type, liquid and gas lines may be either
narrow or wide. Therefore, to avoid confusion, the refrigerant
tubing for your particular model is specified as narrow tube for
liquid, wide tube for gas.
When servicing
• Turn the power OFF at the main power board 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 the work, remembering to check that no
metal scraps or bits of wiring have been left inside the unit being
serviced.
• Ventilate the room during the installation or testng the refrigeration
system; make sure that, after the installation, no gas leaks are
present, because this could produce toxic gas and dangerous
if in contact with flames or heat-sources.
WARNING
CAUTION
WARNING
2

Page
1. SPECIFICATIONS 4
1-1 Unit specifications 4
1-2 Major Component specifications 7
1-3 Other Component specifications 10
2. DIMENSIONAL DATA 11
3. PERFORMANCE DATA 13
3-1 Air Throw Distance Chart 13
4. ELECTRICAL DATA 16
4-1 Electric Wiring Diagrams 16
4-2 Wiring System Diagrams 17
5. FUNCTION 18
5-1 Cool Mode Operation 18
5-2 Heat Mode Operation 19
5-3 Auto (cool/heat) Mode Operation 20
5-4 Dry Mode Operation 21
5-5 Fan Mode Operation 21
5-6 Auto Fan Speed 21
5-7 Forced-Made 22
5-8 Protection Operations in Cool and Dry Modes 22
5-9 Protection Operation in Heat Mode 23
5-10 I Feel Function 25
5-11 Night Function 25
5-12 Diagnostic 26
5-13 Jumpers Configuration 27
5-14 Contacts for Building Automation 28
5-15 Maintenance 29
6. TROUBLESHOOTING 30
6-1 Check before and after troubleshooting 30
6-2 Circuit Breaker Trips or Fuse Blows 30
6-3 Circuit Breaker in several minutes after turning air conditioner on 30
6-4 Unit and Compressor do not run 31
6-5 Some parts of the Air Conditioner do not operate 32
6-6 Air Conditioner operates, but abnormalities aer observed 33
6-7 Poor Cooling or Heating 35
6-8 Excessive Cooling or Hating 36
6-9 If a Sensor is defective 36
7. CHECKING ELETRICAL COMPONENTS 37
7-1 Measurement of Insulation Resistance 37
7-2 Checking Continuity of Fuse on PCB Ass'y 38
Table of Contents
3

1. SPECIFICATIONS
1-1 Unit Specifications
AW720HL
Power source
V
olta
g
e ratin
g
Performance
Capacity
Air circulation (High) m³/h
Features
Controls/Temperature controls
Control unit
Timer
Fan speed
Airflow direction Horizontal
Vertical
Air Filter
Power noise level High/Med./Low dB-A
Refrigerant tubing connections
Refrigerant Narrow tube mm(in.)
tube diameter Wide tube mm(in.)
Refrigerant
Air clean filter
Dimensions & Wei
g
ht
Unit dimensions Height mm
Width mm
Depth mm
Package dimensions Height mm
Width mm
Depth mm
Weight Net kg
Shipping kg
Shipping volume m3
DATA SUBJECT TO CHANGE WITHOUT NOTICE
0.075
220 - 240 V ~ 50 Hz
230 V - 50 Hz
855
322
8.0
10.0
6.35 (1/4)
805
218
273
Microprocessor/ I.C. thermostat
Wireless remote control unit
3 and Auto
ON/OFF 24 hours
270
Manual
Auto
9.52 (3/8)
Optional
Cooling Heating
See catalogue with the requested matching
430
R410A
Flare type
Washable, Anti-Mold
48/46/43
4

AW726HL AW726CL AW726HLF AW726CLF
Power source
V
olta
g
e ratin
g
Performance
Capacity
Air circulation (High) m³/h
Features
Controls/Temperature controls
Control unit
Timer
Fan speed
Airflow direction Horizontal
Vertical
Air Filter
Power noise level High/Med./Low dB-A
Refrigerant tubing connections
Refrigerant Narrow tube mm(in.)
tube diameter Wide tube mm(in.)
Refrigerant
Air clean filter
Dimensions & Wei
g
ht
Unit dimensions Height mm
Width mm
Depth mm
Package dimensions Height mm
Width mm
Depth mm
Weight Net kg
Shipping kg
Shipping volume m3
DATA SUBJECT TO CHANGE WITHOUT NOTICE
ON/OFF 24 hours
3 and Auto
Manual
Auto
Washable, Anti-Mold
50/45/41
Flare type
6.35 (1/4)
9.52 (3/8)
R410A
Optional
270
805
218
273
855
322
8.0
10.0
0.075
220 - 240 V ~ 50 Hz
230 V - 50 Hz
Cooling Heating
Wireless remote control unit
See catalogue with the requested matching
Microprocessor/ I.C. thermostat
450
5

AW735HL AW735CL AW735HLF AW735CLF
Power source
V
olta
g
e ratin
g
Performance
Capacity
Air circulation (High) m³/h
Features
Controls/Temperature controls
Control unit
Timer
Fan speed
Airflow direction Horizontal
Vertical
Air Filter
Power noise level High/Med./Low dB-A
Refrigerant tubing connections
Refrigerant Narrow tube mm(in.)
tube diameter Wide tube mm(in.)
Refrigerant
Air clean filter
Dimensions & Wei
g
ht
Unit dimensions Height mm
Width mm
Depth mm
Package dimensions Height mm
Width mm
Depth mm
Weight Net kg
Shipping kg
Shipping volume m3
DATA SUBJECT TO CHANGE WITHOUT NOTICE
6.35 (1/4)
12.7 (1/2)
R410A
Optional
See catalogue with the requested matching
Microprocessor/ I.C. thermostat
470
220 - 240 V ~ 50 Hz
230 V - 50 Hz
Cooling Heating
Wireless remote control unit
ON/OFF 24 hours
3 and Auto
Manual
Auto
Washable, Anti-Mold
50/45/41
Flare type
270
805
218
273
0.075
855
322
8.0
10.0
6

1-2 Major Component Specifications
AW720HL
Controller PCB
Part No.
Controls
Control circuit fuse
Jumper setting JP1..JP5
Remote Control Unit
Fan & Fan Motor
Type
Q'ty ……. Dia. and lenght mm
Fan motor model…Q'ty
No. Of poles…rpm (230 V, Hi)
Nominal output W
Coil resistance (Ambient temp. 20 °C )
Ω
Safety devices Type
Operating temp. Open °C
Close
Run capacitor µF
VAC
Flap Motor
Type
Model
Rating
Coil resistance (Ambient temp. 25 °C )
Ω
Heat Exch. Coil
Coil
Rows
Fin pitch mm
Face area
DATA SUBJECT TO CHANGE WITHOUT NOTICE
0,6
-
BRN-WHT: 561,8
VLT-ORG: 63,4
YEL-PNK: 115,9
internal fuse
145 ± 5
VLT-WHT: 197,4
10
YEL-ORG: 155,7
Microprocessor
250 V - 3,15 A
1…. Ø 95 / L 617
2,54mm-5pcs
1,4
440
MP24GA1
Stepping motor
0,130
SAC ON-OFF IDU
SAC W-REM
Cross - flow
KFV4Q-11H5P-S…1
4…1160
Aluminium plate fin / Copper tube
DC 12 V
380 ± 7%
2
7

AW726HL AW726CL AW726HLF AW726CLF
Controller PCB
Part No.
Controls
Control circuit fuse
Jumper setting JP1..JP5
Remote Control Unit
Fan & Fan Motor
Type
Q'ty ……. Dia. and lenght mm
Fan motor model…Q'ty
No. Of poles…rpm (230 V, Hi)
Nominal output W
Coil resistance (Ambient temp. 20 °C )
Ω
Safety devices Type
Operating temp. Open °C
Close
Run capacitor µF
VAC
Flap Motor
Type
Model
Rating
Coil resistance (Ambient temp. 25 °C )
Ω
Heat Exch. Coil
Coil
Rows
Fin pitch mm
Face area
DATA SUBJECT TO CHANGE WITHOUT NOTICE
BRN-WHT: 561,8
VLT-ORG: 63,4
VLT-WHT: 197,4
KFV4Q-11H5P-S…1
4…1160
10
SAC ON-OFF IDU
Microprocessor
250 V - 3,15 A
SAC W-REM
1…. Ø 95 / L 617
Cross - flow
2,54mm-5pcs
0,130
Stepping motor
MP24GA1
DC 12 V
380 ± 7%
Aluminium plate fin / Copper tube
2
1,4
YEL-ORG: 155,7
-
1
440
YEL-PNK: 115,9
internal fuse
145 ± 5
8

AW735HL AW735CL AW735HLF AW735CLF
Controller PCB
Part No.
Controls
Control circuit fuse
Jumper setting JP1..JP5
Remote Control Unit
Fan & Fan Motor
Type
Q'ty ……. Dia. and lenght mm
Fan motor model…Q'ty
No. Of poles…rpm (230 V, Hi)
Nominal output W
Coil resistance (Ambient temp. 20 °C )
Ω
Safety devices Type
Operating temp. Open °C
Close
Run capacitor µF
VAC
Flap Motor
Type
Model
Rating
Coil resistance (Ambient temp. 25 °C )
Ω
Heat Exch. Coil
Coil
Rows
Fin pitch mm
Face area
DATA SUBJECT TO CHANGE WITHOUT NOTICE
BRN-WHT: 561,8
VLT-WHT: 197,4
VLT-ORG: 63,4
KFV4Q-11H5P-S…1
4…1250
10
SAC ON-OFF IDU
Microprocessor
250 V - 3,15 A
SAC W-REM
1…. Ø 95 / L 617
Cross - flow
2,54mm-5pcs
0,13
Stepping motor
MP24GA1
DC 12 V
380 ± 7%
Aluminium plate fin / Copper tube
2
1,4
YEL-ORG: 155,7
-
1
440
YEL-PNK: 115,9
internal fuse
145 ± 5
9

1-3 Other Component Specifications
Trasformer
(
TR
)
Rating Primary
Secondary
Capacity
Coil resistance Ω
(
at 25°C
)
Thermal cut-off temp.
Thermistor
(
Coil sensor
)
Resistance k
Ω
Thermistor
(
Room sensor
)
Resistance k
Ω
NTC-THERMISTOR
10 at 25 °C
NTC-THERMISTOR
Primary: -
Secondary: -
120°C
10 at 25 °C
A040C5026AA
AC 230 V, 50 Hz
13 V - 5VA
10

2. DIMENSIONAL DATA
AW720HL AW726HL AW735HL AW726CL AW735CL
A
W720-726
12,7 (1/2") AW735
11

AW726HLF AW735HLF AW726CLF AW735CLF

3. PERFORMANCE DATA
3-1 Air Throw Distance Chart
AW720HL
Horizontal distance (m)
Axis air verocity (m/s)
Vertical distance (m)
Room air temp. : 20°C
Fan speed : High
Heating
Horizontal distance (m)
Axis air verocity (m/s)
Vertical distance (m)
Room air temp. : 27°C
Fan speed : High
Cooling
0
1
2
3
4
0123456789
: Flap angle 0° , : Axis air velocity 0°
: Flap angle 30°, : Axis air velocity 30°
0
1
2
3
4
0123456789
: Flap angle 45° , : Axis air velocity 45°
: Flap angle 60° , : Axis air velocity 60°
13

AW726HL AW726CL AW726HLF AW726CLF
Horizontal distance (m)
Axis air verocity (m/s)
Vertical distance (m)
Room air temp. : 20°C
Fan speed : High
Heating
Horizontal distance (m)
Axis air verocity (m/s)
Vertical distance (m)
Room air temp. : 27°C
Fan speed : High
Cooling
0
1
2
3
4
0123456789
: Flap angle 0° , : Axis air velocity 0°
: Flap angle 30°, : Axis air velocity 30°
0
1
2
3
4
0123456789
: Flap angle 45° , : Axis air velocity 45°
: Flap angle 60° , : Axis air velocity 60°
14

AW735HL AW735CL AW735HLF AW735CLF
Horizontal distance (m)
Axis air verocity (m/s)
Vertical distance (m)
Room air temp. : 20°C
Fan speed : High
Heating
Horizontal distance (m)
Axis air verocity (m/s)
Vertical distance (m)
Room air temp. : 27°C
Fan speed : High
Cooling
0
1
2
3
4
0123456789
: Flap angle 0° , : Axis air velocity 0°
: Flap angle 30°, : Axis air velocity 30°
0
1
2
3
4
0123456789
: Flap angle 45° , : Axis air velocity 45°
: Flap angle 60° , : Axis air velocity 60°
15

4. ELECTRICAL DATA
4-1 Electric Wiring Diagrams
HEAT PUMP MODELS
COOLING MODELS
16

4-2 Wiring System Diagram
HEAT PUMP MODELS
COOLING MODELS
17

5.FUNCTION
5-1 Cool Mode Operation
In Cooling Mode, the operation of the compressor (CM), Outdoor Fan (FMO) and Indoor Fan (FMI) are
determined by the difference between the room air temperature (RAT) and the set point temperature (SPT)
as shown in the graph.
NOTES
1. In this graph, the FMI is operating with the “Auto Fan Speed” setting. If the user has selected the Low,
Medium or High fan speed, the FMI will run constantly at that speed only.
2. In addition to the temperature difference of above, the operations of the main components (CM, FMO,
FMI) is also controlled by protection delays. That is: - the minimum off time of compressor is 3 minutes. -
- the minimum off time of compressor is 3 minutes. -
- the indoor fan can change speed only after it has operated at the same speed for 30 sec if in AUTO
and 1 sec for the other settings (High, Med, Low).
18

5-2 Heat Mode Operation
The Heating mode operation is similar to the Cooling mode operation. The CM, FMO and FMI are mainly
controlled by the value of (RAT – SPT). In the graph above, the FMI is operating in AUTO speed mode.
Therefore, the FMI speed changes automatically according to the (RT - SPT).
NOTES
1. After the CM has stopped, the FMI runs for 30s in order to purge heat from the indoor coil.
2. The FMI will not be turned on until the indoor coil temperature is warm enough to prevent the supply of
cool air (see COLD DRAFT PREVENTION feature for details).
The indoor fan can change speed only after it has operated at the same speed for 30 sec if in AUTO and
1 sec for the other settings (High, Med, Low).
HEAT PUMP MODELS
19

5-3 Auto (cool/heat) Mode Operation
In Auto Mode, the unit switches automatically between the Auto Cooling and Auto Heating in order to
maintain the room temperature (RAT) at the prescribed set point (SPT).
The switching between the two modes is according to the above graph.
Refer to the sections 5.1 COOLING MODE and 5.2 HEATING MODE for system operation details.
HEAT PUMP MODELS
20