Argo AD28AL Manual

TECHNICAL DATA
& SERVICE MANUAL
INDOOR UNIT: AD28A
L
AD38AL
SPLIT SYSTEM AIR CONDITIONER
AD38AL
0.8180.353.0 07/2005
387006115
Model No. Product Code No.
AD28AL 387006114

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 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...
• 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 testing 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
… In a ceiling
Make sure the ceiling 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 then
drifting snow. Provide snow vents.
When connecting refrigerant tubing
2

Page
1. SPECIFICATIONS 4
1-1 Unit specifications 4
1-2 Major Component specifications 6
1-3 Other Component specifications 8
1-4 Indoor Fan performance 9
2. DIMENSIONAL DATA 10
3. ELECTRICAL DATA 11
3-1 Electric Wiring Diagrams 11
4. FUNCTION 12
4-1 Cool Mode Operation 12
4-2 Heat Mode Operation 13
4-3 Auto Mode Operation 14
4-4 Dry Mode Operation 15
4-5 Fan Mode Operation 16
4-6 Protections in Cool/Dry Mode 16
4-7 Protections in Heat Mode 18
4-8 Sleep Function 21
4-9 Daily Timer 21
4-10 I FEEL Function 21
4-11 Drain Pump Operation 22
5. TROUBLESHOOTING 23
5-1 Check before and after troubleshooting 23
5-2 Air conditioner does not operate 23
5-3 Some part of air conditioner does not operate 27
5-4 Air conditioner operates, but abnormalities are observed 29
5-5 If a sensor is defective 31
6. CHECKING ELECTRICAL COMPONENTS 32
6-1 Measurement of Insulation Resistance 32
6-2 Checkin
g
Continuit
y
of Fuse on PCB Ass'
y
33
6-3 Checking Motor Capacitor 33
Table of Contents
3

1. SPECIFICATIONS
1-1 Unit Specifications
AD28AL
Power source
V
olta
g
e ratin
g
Performance
Capacity
Air circulation (High/Med./Low) m³/h
External static pressure (High) Pa (mm W.G.)
Features
Controls/Temperature controls
Control unit
Timer
Fan speed
Air Filter
Operation sound (*) High/Med./Low dB-A
Refrigerant tubing connections
Refrigerant Narrow tube mm(in.)
tube diameter Wide tube mm(in.)
Refrigerant
Dimensions & Wei
g
ht
Dimensions Unit Height mm
Width mm
Depth mm
Package dimensions Unit Height mm
Width mm
Depth mm
Volume m3
Weight Unit Net kg
Shipping kg
DATA SUBJECT TO CHANGE WITHOUT NOTICE
(*) Power level measured at operating conditions (HIGH speed / 5mmH20 external static pressure) and inside
discharge air duct
34
6,35 (1/4)
571
Microprocessor/ I.C. thermostat
Wireless remote control unit
3 and Auto /1(Hi)
ON/OFF 24 hours
9,52 (3/8)
745
220 - 240V ~ 50Hz
230V
Washable
54/52/49
Cooling
49(5) at shipment - 69 (7) with booster cable
Heating
See catalogue with the requested matching
600/510/440
30
R410A
Flare type
1086
852
0,3
365
266
4

AD38AL
Power source
V
olta
g
e ratin
g
Performance
Capacity
Air circulation (High/Med./Low) m³/h
External static pressure (High) Pa (mm W.G.)
Features
Controls/Temperature controls
Control unit
Timer
Fan speed
Air Filter
Operation sound (*) High/Med./Low dB-A
Refrigerant tubing connections
Refrigerant Narrow tube mm(in.)
tube diameter Wide tube mm(in.)
Refrigerant
Dimensions & Wei
g
ht
Dimensions Unit Height mm
Width mm
Depth mm
Package dimensions Unit Height mm
Width mm
Depth mm
Volume m3
Weight Unit Net kg
Shipping kg
DATA SUBJECT TO CHANGE WITHOUT NOTICE
(*) Power level measured at operating conditions (HIGH speed / 5mmH20 external static pressure) and inside
discharge air duct
Microprocessor/ I.C. thermostat
9,52 (3/8)
54/52/49
R410A
Wireless remote control unit
ON/OFF 24 hours
3 and Auto /1(Hi)
Washable
571
266
220 - 240V ~ 50Hz
230V
Cooling Heating
See catalogue with the requested matching
600/510/440
Flare type
6,35 (1/4)
49(5) at shipment - 69 (7) with booster cable
852
365
745
1086
0,3
30
34
5

1-2 Major Component Specifications
AD28AL
Controller PCB
Part No.
Controls
Control circuit fuse
Remote Control Unit
Fan & Fan Motor
Type
Q'ty ……. Dia. and lenght mm
Fan motor model…Q'ty
No. Of poles…rpm (230 V) (*)
Running Amps (HIGH speed) A
Power input (HIGH speed) W
Coil resistance (Ambient temp. 20 °C )
Ω
BLU-BRN: 95
BRN-BLK: 37
BLK-GRY: 15
GRY-VLT: 15
WLT-RED: 30
RED-YEL: 101
Safety devices Type
Operating temp. Open °C
Run capacitor µF
VAC
Heat Exch. Coil
Coil
Rows
Fin pitch mm
face area m2
DATA SUBJECT TO CHANGE WITHOUT NOTICE
(*) Fan speeds: H / M / L measured at operating conditions( HIGH speed / 5mmH20 external static pressure)
2
0,45
110
1,8
Internal thermal protector - 7AM 037 A 5
150 ± 5K
450
Microprocessor
250 V - 5 A
0,126
KSA
RC-7(RC)
Centrifugal fan
3RGB-CO-45-30 5V/1….1
4 … 1060/1000/910
Aluminium plate fin / Copper tube
1,6
2…. Ø 160 / L 240
6

AD38AL
Controller PCB
Part No.
Controls
Control circuit fuse
Remote Control Unit
Fan & Fan Motor
Type
Q'ty ……. Dia. and lenght mm
Fan motor model…Q'ty
No. Of poles…rpm (230 V) (*)
Running Amps (HIGH speed) A
Power input (HIGH speed) W
Coil resistance (Ambient temp. 20 °C )
Ω
BLU-BRN: 95
BRN-BLK: 37
BLK-GRY: 15
GRY-VLT: 15
WLT-RED: 30
RED-YEL: 101
Safety devices Type
Operating temp. Open °C
Run capacitor µF
VAC
Heat Exch. Coil
Coil
Rows
Fin pitch mm
face area m2
DATA SUBJECT TO CHANGE WITHOUT NOTICE
(*) Fan speeds: H / M / L measured at operating conditions( HIGH speed / 5mmH20 external static pressure)
1,6
0,126
4 … 1060/1000/910
Aluminium plate fin / Copper tube
2
150 ± 5K
1,8
450
2…. Ø 160 / L 240
3RGB-CO-45-30 5V/1….1
Internal thermal protector - 7AM 037 A 5
0,45
110
KSA
Microprocessor
250 V - 5 A
RC-7(RC)
Centrifugal fan
7

1-3 Other Component Specifications AD28AL
AD38AL
Thermistor
(
Coil sensor TH1
)
Resistance
Κ
Ω
Thermistor
(
Room sensor TH2
)
Resistance
Κ
Ω
Drain pump
Model
Rating Voltage
Input
Total head capacity
Safet
y
float switch
Model
Contact rating 230V AC/DC - 0,5A
0,4 l/min
BI 1300 2725
PC 309564003
220/240V - 50Hz
14W
10 ± 5%
10 ± 3%
8

9

2. DIMENSIONAL DATA
Units: mm
571
10

3. ELECTRICAL DATA
3-1 Electric Wiring Diagrams
11

4-1 Cool Mode Operation
4. FUNCTION
12

4-2 Heat Mode Operation
13

4-3 Auto (Cool/Heat) Mode Operation
14

4-4 Dry Mode Operation
15

4-5 Fan Mode Operation
4-6 Protection operations in Cool and Dry Mode
1. Indoor Coil Defrost Protection
5 Protection Operations in Cool and Dry Modes
16

2. Outdoor Coil High Pressure Protection
17

4-7 Protection Operations in Heat Mode
1. Outdoor Coil Deice Protection
18

19

2. Indoor Coil High Pressure Protection in Heat Mode
20