Fujitsu AR 18LUAD Series Service Instruction page 120

3 4
INSTALLING DRAIN
ELECTRICAL WIRING
HOSE
INSTALL THE DRAIN HOSE
WARNING
• Install the drain hose with downward gradient (1/50 to 2/50) and
Before starting work, check that power is not be-
so there are no rises or traps in the hose.
ing supplied to the indoor unit and outdoor unit.
• Use general hard polyvinyl chloride pipe and connect it with ad-
hesive (polyvinyl chloride) so that there is no leakage.
Match the terminal board numbers and connection cord
• When the hose is long, install supporters.
colors with those of the outdoor unit.
• Do not perform air bleeding.
Erroneous wiring may cause burning of the electric parts.
• Always heat insulate the indoor side of the drain hose.
Connect the connection cords firmly to the termi-
A. CEILING CONCEALED TYPE
nal board. Imperfect installation may cause a fire.
Drain Always fasten the outside covering of the con-
hose
Trap nection cord with the cord clamp. (If the insulator
Outlet air
flow is chafed, electric leakage may occur.)
OK
NO Always connect the ground wire.
Arrange the drain hose
lower than this portion
HOW TO CONNECT WIRING TO THE TERMINALS
Rise
A. For solid core wiring (or F-cable)
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
the insulation to about 25 mm (15/16") of expose the solid wire.
Supporter
(2) Using a screwdriver, remove the terminal screw(s) on the terminal board.
(3) Using pliers, bend the solid wire to form a loop suitable for
the terminal screw.
(4) Shape the loop wire properly, place it on the terminal board and
tighten securely with the terminal screw using a screwdriver.
1.5 to 2 m (5 to 6.5 ft)
B. For strand wiring
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
Air bleeding
the insulation to about 10 mm (3/8") of expose the strand wiring.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal board.
(3) Using a round terminal fastener or pliers, securely clamp a
B. FLOOR STANDING CONCEALED TYPE
round terminal to each stripped wire end.
(4) Position the round terminal wire, and replace and tighten
the terminal screw using a screwdriver.
A. Solid wire
Rise
Loop
OK NO NO
Insulation
CAUTION
Screw with
special washer
Install the drain hose so that the control box cover
can be removed for servicing. Round terminal
Terminal
In order to prevent water from leaking into the con-
Wire
board
trol box, make sure that the drain hose is well in-
Wire
sulated.
After the wiring is connected and installation of
HOW TO FIX CONNECTION CORD AND
the piping and drain hose is complete, make a seal
around the opening in the wall.
POWER CABLE AT THE CORD CLAMP
After passing the connection cord and power cable through the
The outside diameter of drain port is 26 mm, use a suitable insulation tube, fasten it with the cord clamp.
drain hose.
Insulation tube
Drain hose insulation
Drain hose insulation
Unit
0 mm Drain hose
Unit
@ @
Use VW-1, 0.5 to 1.0 mm thick, PVC tube as the insulation tube.
Drain hose
6
TEST RUN
Error code Error contents
00 Communication error
(indoor unit remote controller)
Communication error
CAUTION 01
(outdoor unit indoor unit)
Always turn on the power 12 hours prior to the start
Room temperature sensor open
02
of the operation in order to ensure compressor pro-
tection.
Room temperature sensor short-circuited
03
(1) Stop the air conditioner operation.
Indoor heat exchanger temperature sensor open
04
(2) Press the master control button and the fan control button
simultaneously for 2 seconds or more to start the test run.
05 Indoor heat exchanger temperature sensor short-
circuited
Outdoor heat exchanger temperature sensor
06
Power source connection error
08
Test run display Float switch operated
09
Outdoor temperature sensor
0A
(3) Press the start/stop button to stop the test run.
Discharge pipe temperature sensor
0c
[SELF-DIAGNOSIS]
When the error indication "E:EE" is displayed, follow the following
11 Model abnormal
items to perform the self-diagnosis. "E:EE" indicates an error has
occurred.
Indoor fan abnormal
12
1. REMOTE CONTROLLER DISPLAY Outdoor signal abnormal
13
(1) Stop the air conditioner operation.
(2) Press the set temperature buttons simultaneously for 5 Outdoor EEPROM abnormal
14
seconds or more to start the self-diagnosis.
Refer to the following tables for the description of each error
15 Compressor temperature sensor
code.
16 Pressure switch abnormal
Unit number (usually 0)
IPM error
Error code 17
SU MO TU WE TH FR SA
Compressor cannot operate
1A
EX. Self-diagnosis
Outdoor fan abnormal
1b
(3) Press the set temperature buttons simultaneously for 5
seconds or more to stop the self-diagnosis.
9374815012-02B2back 1
1. INDOOR UNIT SIDE 2. Floor standing concealed/ceiling
(1) Remove the control box cover from the control box. concealed select switch
(1) The DIP switches were set for use as a ceiling concealed type
at the factory.
(2) The following changes must be made to the settings if the unit
Control box
Screw
is to be used as a floor standing concealed type.
(3) Changing the settings for the electrical circuits.
DIP Switch 1 (SW1) on the printed circuit board inside the elec-
tric component box must be set as follows.
Control box cover
Remove the 4 screws and
remove the control box cover
from the control box.
Rotary switch
DIP switch
[SW1]
(2) Cord connection.
• Clamp the connection cord with the cord clamp.
• Connect the connection cord to the terminal board.
• Clamp the remote control cord with nylon clamp.
• Connect the remote control cord to the terminal board.
1 2 3 1 2(N) 3
Terminal board
Cord clamp
Nylon clamp
Remote control cord Connection cord
CAUTION
B. Strand wire
Round
Tighten the indoor unit connection cord (to the out-
terminal
door unit) and power supply indoor and outdoor
unit terminal board connections firmly with the ter-
minal board screws. Faulty connection may cause
a fire.
If the indoor unit connection cord (to the outdoor
unit) and power supply are wired incorrectly, the
Screw with
air conditioner may be damaged.
special washer
Round Wire the indoor unit connection cord (to the out-
terminal
door unit) by matching the numbers of the out-
door and indoor units terminal board numbers as
shown in terminal label.
Ground both the indoor and outdoor units by at-
taching a ground wire.
Unit shall be grounded in compliance with the ap-
plicable local and national codes.
Cord clamp
Insulation
tube
7 8
AIR FLOW SETTING
Static range is 0 to 40 Pa.
If static pressure is over 20 Pa, we recommend High static mode.
Change the High static and Normal mode. If select the High static
When setting the rotary switch and DIP switches,
mode, air flow increases.
do not touch any other parts on the circuit board
About 9000 BTU model and 22000 BTU model, High static mode
directly with your bare hands.
and normal mode are same air flow.
The air flow is set according to the DIP switch settings in the follow-
Be sure to turn off the main power.
ing tables.
[12000 - 18000 BTU/h models]
1. GROUP CONTROL SYSTEM
A number of indoor units can be operated at the same time using a
DIP-SW4
single remote controller.
Fan mode
1 2 3
(1) Wiring method (indoor unit to remote controller)
Normal mode (0 Pa 20) — OFF OFF
High static pressure mode (20 < Pa 40) — ON OFF Indoor unit
No. 0
Indoor unit PC board
1 2 3
SW 1 SW 4
DIP switch
(SW4)
1 2 3
Indoor unit
PC board
Remote controller wire
(2) Rotary switch setting (indoor unit)
Set the unit number of each indoor unit using the rotary switch
on the indoor unit circuit board.
The rotary switch is normally set to 0.
CAUTION
(3) DIP switch setting (remote controller)
Change DIP switch No. 3 on the remote controller from OFF to ON.
Do not set any switches other than those specified
in this sheet. The air conditioner may not operate
correctly if any switches other than those specified
are changed.
5 REMOTE CONTROLLER
SETTING
CAUTION
In order to detect the room tempera-
Temperature
ture correctly when using the
sensor
temperature sensor of the remote
controller, do not install the remote
controller in a place where it will be
exposed to direct sunlight or
directly below the air outlet of the
indoor unit.
Indoor unit PC board
When installing the remote controller and cord
near a source of electromagnetic waves, sepa-
rate the remote controller from the source of the
electromagnetic waves and use shielded cord.
Do not touch the remote controller PC board and
PC board parts directly with your hands.
1. INSTALLING THE REMOTE CONTROLLER
SW1 SW1
(1) Open the operation panel on the front of the remote control-
ler, remove the two screws indicated in the following figure,
and then remove the front case of the remote controller.
Front case
(back side) Rear case
Ceiling concealed type Floor standing
concealed type
DAY
CLOCK ADJUST DAY OFF ENERGY THERMO
SET BACK SAVE SENSOR
DELETE SET
Screws
Connector
When installing the remote controller, remove the connector
from the front case. The wires may break if the connector is
not removed and the front case hangs down.
When installing the front case, connect the connector to the
front case.
(2) Install the rear case to the wall, etc. with the two tapping
screws.
Refer to the following information to install the remote con-
troller wires.
Remote controller
wires
Front case
Connector
Rear case
Install the remote controller wires so as not to be direct touched
with your hand.
SPECIAL INSTALLATION
2. DUAL REMOTE CONTROLLERS (OPTIONAL)
METHODS Two separate remote controllers can be used to operate the indoor
units.
(1) Wiring method (indoor unit to remote controller)
CAUTION
Indoor unit
1 2 3
Remote
controller
wire
1 2 3 Remote 1 2 3
controller
Master Slave
unit unit
(2) DIP switch setting (remote controller)
Set the remote controller DIP switch Nos. 1 and 2 according to
Indoor unit Indoor unit Indoor unit
the following table.
No. 1 No. 2 No. 3
1 2 3 1 2 3 1 2 3
Number of Master unit
remote
DIP-SW No. 1 DIP-SW No. 2 controller
controllers
Remote
controller 1 (Normal) ON OFF
OFF
2 (Dual) OFF OFF
Number of
Slave unit
remote
DIP-SW No. 1 DIP-SW No. 2
controllers
1 (Normal) – –
DIP Switch
2 (Dual) ON ON
Indoor unit Remote controller
OFF ON
1
2
3
4
5
6
ON
Rotary Switch DIP Switch
6/7/05, 3:49 PM
2. ROUTING THE REMOTE CONTROLLER WIRES 4. SETTING THE ROOM TEMPERATURE DE-
(1) Install the remote controller wires to the terminals on the top of TECTION LOCATION
the rear case as shown in the following figure.
The detection location of the room temperature can be selected
(2) Fasten the wires with the binder.
from the following three examples. Choose the detection location
(Example) that is best for the installation location.
A. Indoor unit setting (factory setting)
The room temperature is detected by the indoor unit temperature
1. Red
sensor.
2. White
3. Black
Binder
(1) When the THERMO SENSOR button is pressed, the lock display
flashes because the function is locked at the factory.
3. SETTING THE DIP SWITCHES
When using a battery (memory backup)
B. Remote controller setting
The room temperature is detected by the remote controller tem-
perature sensor.
OFF ON
1
2
3
4
5
6
ON
DIP Switch
Change the DIP switch setting to use batteries. (The DIP switch is
not set to use batteries at the factory.)
Change DIP switch No. 6 from OFF to ON.
(1) Press the THERMO SENSOR button for 5 seconds or more to
If batteries are not used, all of the settings stored in memory will be
unlock the function. The thermo sensor display flashes and then
deleted if there is a power failure.
disappears when the function is unlocked.
(2) Press the THERMO SENSOR button.
The thermo sensor display appears.
(3) Press the THERMO SENSOR button again for 5 seconds or
more to lock the function. The thermo sensor display flashes
and then remains on when the function is locked.
(4) Make sure that the function is locked.
3. AUTO RESTART
• When the air conditioner power was temporarily turned off by a
power failure etc., it restarts automatically after the power recov-
ers.
(Operated by setting before the power failure)
The auto restart function can be canceled.
(1) DIP switch setting (indoor unit)
Change the DIP switch (SW1-1) on the indoor unit circuit board
from ON to OFF. The auto restart function will be canceled.
Indoor unit
OFF
SW1 SW4
DIP Switch
[DIP-SWITCH SETTING]
Remote
G Indoor unit
SW state
NO. Detail
ON
OFF ON
1
Validity ✽ Auto restart setting
1 Invalidity
2
3
DIP-Switch 1 ✽ Temperature correction
2 — —
4
5 setting for heating
3 — — ✽
6
1 — ✽ — Remote controller setting
✽
DIP-Switch 4 2 — —
Air flow setting
✽
3 — —
G Remote controller
SW state
NO. Detail
OFF ON
✽
1 Dual remote controller
setting
✽
2
One unit ✽ Multiple unit Group control setting
3
DIP-Switch
4 Heat & Cool model Cooling only model Model setting
Validity ✽
5 Invalidity Auto changeover setting
6 Invalidity✽ Validity Memory backup setting
✽ : Factory setting
PART NO. 9374815012-02
C.Indoor unit/remote controller setting
(room temperature sensor selection)
The temperature sensor of the indoor unit or the remote controller
can be used to detect the room temperature.
C
Indoor unit
A
Indoor unit
(1) Press the THERMO SENSOR button for 5 seconds or more to
unlock the function. The thermo sensor display flashes and then
disappears when the function is unlocked.
(2) Press the THERMO SENSOR button to select the temperature
sensor of the indoor unit or the remote controller.
NOTES
If the function to change the temperature sensor is used as shown
in examples A and B (other than example C), be sure to lock the
detection location. If the function is locked, the lock display
will flash when the THERMO SENSOR button is pressed.
B
Indoor unit