Argoclima Euro-Line AS28AL Manual

TECHNICAL DATA
& SERVICE MANUAL
INDOOR UNIT: AS28A
L
AS38AL
SPLIT SYSTEM AIR CONDITIONER
0.8180.352.0 07/2005
Model No. Product Code No.
AS28AL 387006112
387006113AS38AL
®

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 7
2. DIMENSIONAL DATA 8
3. ELECTRICAL DATA 9
3-1 Electric Wiring Diagrams 9
4. FUNCTION 10
4-1 Cool Mode Operation 10
4-2 Heat Mode Operation 11
4-3 Auto Mode Operation 12
4-4 Dry Mode Operation 13
4-5 Fan Mode Operation 14
4-6 Protections in Cool/Dry Mode 14
4-7 Protections in Heat Mode 16
4-8 Sleep Function 19
4-9 Daily Timer 19
4-10 I FEEL Function 19
4-11 Drain Pump Operation 20
5. TROUBLESHOOTING 21
5-1 Check before and after troubleshooting 21
5-2 Air conditioner does not operate 21
5-3 Some part of air conditioner does not operate 25
5-4 Air conditioner operates, but abnormalities are observed 27
5-5 If a sensor is defective 29
6. CHECKING ELECTRICAL COMPONENTS 30
6-1 Measurement of Insulation Resistance 30
6-2 Checkin
g
Continuit
y
of Fuse on PCB Ass'
y
31
6-3 Checking Motor Capacitor 31
Table of Contents
3

1. SPECIFICATIONS
1-1 Unit Specifications
AS28AL
Power source
V
olta
g
e ratin
g
Performance
Capacity
Air circulation (High/Med./Low) m³/h
Features
Controls/Temperature controls
Control unit
Timer
Fan speed
Airflow direction Vertical
Air Filter
Operation sound High/Med./Low dB-A
Refrigerant tubing connections
Refrigerant Narrow tube mm(in.)
tube diameter Wide tube mm(in.)
Refrigerant
Refrigerant tube kit / Air clean filter
Dimensions & Wei
g
ht
Dimensions Unit Height mm
Width mm
Depth mm
Ceiling panel Height mm
Width mm
Depth mm
Package dimensions Unit Height mm
Width mm
Depth mm
Volume m3
Ceiling panel Height mm
Width mm
Depth mm
Volume m3
Weight Unit Net kg
Shipping kg
Ceiling panel Net kg
Shipping kg
DATA SUBJECT TO CHANGE WITHOUT NOTICE
Cooling Heating
See catalogue with the requested matching
700/600/500
273
Auto
9,52 (3/8)
Optional / -------
R410A
Flare type
Washable, Anti-Mold
52/48/45
Microprocessor/ I.C. thermostat
Wireless remote control unit
3 and Auto /1(Hi)
ON/OFF 24 hours
4,70
220 - 240V ~ 50Hz
230V
744
0,07
16,5
21
6,35 (1/4)
575
730
730
575
64
0,18
380
2,50
110
800
650
800
4

AS38AL
Power source
V
olta
g
e ratin
g
Performance
Capacity
Air circulation (High/Med./Low) m³/h
Features
Controls/Temperature controls
Control unit
Timer
Fan speed
Airflow direction Vertical
Air Filter
Operation sound High/Med./Low dB-A
Refrigerant tubing connections
Refrigerant Narrow tube mm(in.)
tube diameter Wide tube mm(in.)
Refrigerant
Refrigerant tube kit / Air clean filter
Dimensions & Wei
g
ht
Dimensions Unit Height mm
Width mm
Depth mm
Ceiling panel Height mm
Width mm
Depth mm
Package dimensions Unit Height mm
Width mm
Depth mm
Volume m3
Ceiling panel Height mm
Width mm
Depth mm
Volume m3
Weight Unit Net kg
Shipping kg
Ceiling panel Net kg
Shipping kg
DATA SUBJECT TO CHANGE WITHOUT NOTICE
Wireless remote control unit
See catalogue with the requested matching
Microprocessor/ I.C. thermostat
700/600/500
220 - 240V ~ 50Hz
230V
Cooling Heating
R410A
Optional / -------
575
273
52/48/45
Flare type
6,35 (1/4)
9,52 (3/8)
ON/OFF 24 hours
3 and Auto /1(Hi)
Auto
Washable, Anti-Mold
0,18
110
800
575
64
730
730
380
744
650
2,50
4,70
800
0,07
16,5
21
5

AS28AL
AS38AL
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 A
Power input W
Coil resistance (Ambient temp. 20 °C )
Ω
BLU-BLK: 231,0
BLK-GRY: 50,2
GRY-RED: 27,8
RED-WHT: 119,5
WHT-BLU: 49,5
Safety devices Type
Operating temp. Open °C
Close °C
Run capacitor µF
VAC
Flap Motor
Type
Model
Rating
No of poles …rpm
Nominal output W
Coil resistance (Ambient temp. 20 °C ) k
Ω
Heat Exch. Coil
Coil
Rows
Fin pitch mm
face area m2
DATA SUBJECT TO CHANGE WITHOUT NOTICE
KSA
Microprocessor
250 V - 5 A
RC-7 (RC)
Centrifugal fan
1…. Ø 280 / L 175
R4E280-AK45-12…1
4 … 870/720/600/270
0,33
75
Internal thermal protector
160 ± 10K
130 ± 15K
2
450
Synchro motor
M2LJ24ZE31
AC 208/230V 50/60Hz
8 …. 2,5/3,0
1,3
0,258
3/2,5
16,45 ± 15%
Aluminium plate fin / Copper tube
1
6

1-3 Other Component Specifications AS28AL
AS38AL
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%
7

2. DIMENSIONAL DATA
Units: mm
8

3. ELECTRICAL DATA
3-1 Electric Wiring Diagrams
9

4-1 Cool Mode Operation
4. FUNCTION
10

4-2 Heat Mode Operation
11

4-3 Auto (Cool/Heat) Mode Operation
12

4-4 Dry Mode Operation
13

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
14

2. Outdoor Coil High Pressure Protection
15

4-7 Protection Operations in Heat Mode
1. Outdoor Coil Deice Protection
16

17

2. Indoor Coil High Pressure Protection in Heat Mode
18

4-8 Sleep Function
4-9 Daily Timer Function
4-10 IFEEL Function
19

4-11 Pump Operation
Drain pump operates only in Cool and Dry Mode.
The float switch used for water level detection is closed under normal condition, and is open when wat
e
overflow.
For the NEC version of MCU, the "Overflow" and “Normal” conditions are indicated by a logic “0” and
“1” at the float switch pins connector respectively.
For the Fujitsu version of MCU, the "Overflow" and “Normal” condition are indicated by a logic “1” and
“0” at the float switch pins connector respectively. The overflow condition can activate the water pump i
n
Standy and operating modes
ON
OFF
ON
COMP
(WVL)
PUMP
OFF
ON
OPER
LED
OFF
Overflow
Water Level
Normal
BLINK
COMP/WVL is
forced OFF
8 min 8 min
Overflow when
unit is ON
Overflow when
unit is OFF
1 min
20