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5
FUNCTION SETTING
Setting Other Functions
The following settings are also possible, depending on the operating
conditions. (The unit is factory-set to 00 .)
Follow the instructions in the Local Setup Procedure, which is supplied
Auto Restart
with the remote control, in accordance with the installed condition. After
the power is turned on, perform the Function Setting on the remote
Setting Description
Function Number
control.
The settings may be selected between the following two: Function
Yes
Number or Setting Value.
40
No
Settings will not be changed if invalid numbers or setting values are
selected.
Indoor Room Temperature Sensor Switching Function (Wired remote con-
Setting the Ceiling Height
troller only)
Select the setting values in the table below according to the height of
Setting Description
Function Number
the ceiling. (The unit is factory-set to 00 .)
No
42
Setting Value
Yes
Setting Description
Function Number
Standard
If setting value is 00 , room temperature is controlled by the indoor unit
00
(2.3 m to 3.0 m)
temperature sensor.
20
High ceiling
If setting value is 01 , room temperature is controlled by either indoor
01
(3.0 m or more)
unit temperature sensor or remote control unit sensor.
[When using the wireless remote controller]
Setting the Filter Sign
SWITCHING REMOTE CONTROL UNIT SIGNAL
The indoor unit has a sign to inform the user that it is time to clean the
CODES
filter.
Select the time setting for the filter sign display interval in the table
Confirm the setting of the remote control unit signal code and the printed
below according to the amount of dust or debris in the room. (The unit
circuit board setting.
is factory-set to 00 .)
If these are not confirmed, the remote control unit cannot be used to
If you do not wish the filter sign to be displayed, select the setting value
operate for the air conditioner.
for No indication .
Setting Description
Function Number
Setting Value
Jumper wire
Remote control unit
Standard
JM1
JM2
00
(2,500 hours)
Connect
Connect
A (Primary setting)
Long interval
01
Disconnect
Connect
(4,400 hours)
11
Connect
Disconnect
Short interval
02
(1,250 hours)
Disconnect
Disconnect
No indication
03
Setting the Cooler Room Temperature Correction
Depending on the installed environment, the room temperature sensor
may require a correction. The settings may be selected as shown in the
table below. (The unit is factory-set to 00 .)
Setting Description
Function Number
Setting Value
Standard
00
30
Lower control
01
Setting the Heater Room Temperature Correction
Depending on the installed environment, the room temperature sensor
may require a correction. The settings may be changed as shown in the
table below. (The unit is factory-set to 00 .)
Setting Description
Function Number
Setting Value
Standard
00
01
Lower control
31
Indoor unit
Slightly warmer control
02
Printed circuit board
Warmer control
03
Setting record
Troubleshooting
Record any changes to the settings in the following table.
(Troubleshooting with the indoor display)
Troubleshooting at the display is possible either on the wired or wireless
Setting
Setting Value
remote control.
Ceiling height
Setting Value
Filter sign
00
Cooler room temperature
01
correction
Heater room temperature
correction
Auto restart
Indoor room temperature
Setting Value
sensor switching function
00
After completing the FUNCTION SETTING, be sure to turn off the power
The OPERATION, TIMER and FILTER lamp operate as follows table ac-
01
and turn it on again.
cording to the error contents.
6
Indoor signal error
TEST RUN
Wired remote controller abnormal
Indoor room temperature sensor error
Indoor heat exchanger temperature
CHECK ITEMS
sensor (middle) error
Indoor heat exchanger temperature
(1) Is operation of each button on the remote control unit normal
sensor (inlet) error
(2) Does each lamp light normally
(3) Do not air flow direction louvers operate normally
Float switch operated
(4) Is the drain normal
Outdoor discharge pipe temperature
(5) Is there any abnormal noise and vibration during operation
sensor error
Do not operate the air conditioner in the running state for a long time.
Outdoor heat exchanger temperature
signal code
sensor (outlet) error
Test running
Outdoor temperature sensor error
When the air conditioner is run by pressing the remote control unit test
Heatsink thermistor error
b
run button, the OPERATION and TIMER lamps flash slowly at the same
Compressor temperature sensor error
time.
c
2-way valve temperature sensor error
d
[Using the wireless remote control]
3-way valve temperature sensor error
Outdoor heat exchanger temperature
For the operation method, refer to the operating manual.
sensor (middle) error
The outdoor unit may not operate depending on the room temperature.
Indoor manual auto switch abnormal
In this case, press the test run button on the remote control unit while
the air conditioner is running. (Point the transmitter section of the re-
Power supply frequency detection
mote control unit toward the air conditioner and press the test run but-
error
ton with the tip of a ball-point pen, etc.)
IPM protection
Transmitter section
CT error
Compressor location error
Outdoor fan error
Connected indoor unit abnormal
Outdoor unit computer communication
error
Indoor fan abnormal
Discharge temperature error
Test run button
Excessive high pressure protection on
To end test operation, press the remote control unit START/STOP button.
cooling
(When the air conditioner is run by pressing the test run button, the
4-way valve abnormal
OPERATION indicator lamp and TIMER indicator lamp will simultane-
Pressure switch abnormal
ously flash slowly.)
Compressor temperature error
[Using the wired remote control]
Active filter abnormal
For the operation method, refer to the operating manual.
PFC circuit error
(1) Stop the air conditioner operation.
: 0.5s ON/0.5s OFF (Flash)
(2) Press the master control button and the fan control button simultane-
ously for 2 seconds or more to start the test run.
Test run display
(3) Press the start/stop button to stop the test run.
[Troubleshooting at the remote control LCD]
This is possible only on the wired remote control.
[SELF-DIAGNOSIS]
If an error occurs, the following display will be shown.
FILTER lamp (Orange)
( EE will appear in the set room temperature display.)
Unit number
TIMER lamp (Green)
Error code
OPERATION lamp (Red)
SU MO TU W E TH FR SA
Ex. Self-diagnosis
Error code
Error contents
OPERATION
TIMER lamp
FILTER lamp
01
Error contents
lamp (RED)
(GREEN)
(ORANGE)
13
Indoor signal error
26
(8 times)
27
(2 times)
(2 times)
00
Wired remote controller abnormal
(2 times)
(3 times)
02
Indoor room temperature sensor error
Indoor heat exchanger temperature sensor (middle)
04
(2 times)
(4 times)
error
Indoor heat exchanger temperature sensor (inlet)
(2 times)
(6 times)
28
error
(3 times)
(2 times)
09
Float switch operated
0C
Outdoor discharge pipe temperature sensor error
(3 times)
(3 times)
Outdoor heat exchanger temperature sensor (outlet)
06
error
(3 times)
(4 times)
0A
Outdoor temperature sensor error
(3 times)
(7 times)
0E
Heatsink thermistor error
(3 times)
(8 times)
15
Compressor temperature sensor error
(3 times)
(2 times)
1d
2-way valve temperature sensor error
(3 times)
(3 times)
1E
3-way valve temperature sensor error
(3 times)
(4 times)
Outdoor heat exchanger temperature sensor (middle)
29
error
(4 times)
(2 times)
20
Indoor manual auto switch abnormal
(4 times)
(4 times)
2A
Power supply frequency detection error
(5 times)
(2 times)
17
IPM protection
(5 times)
(3 times)
18
CT error
1A
(5 times)
(5 times)
Compressor location error
1b
(5 times)
(6 times)
Outdoor fan error
1F
(5 times)
(7 times)
Connected indoor unit abnormal
1c
Outdoor unit computer communication error
(5 times)
(8 times)
12
Indoor fan abnormal
(6 times)
(2 or 3 times)
0F
Discharge temperature error
(7 times)
(2 times)
24
Excessive high pressure protection on cooling
2c
4-way valve abnormal
(7 times)
(3 times)
16
Pressure switch abnormal
(7 times)
(4 times)
2b
Compressor temperature error
(7 times)
(5 times)
19
Active filter abnormal
(7 times)
(6 times)
25
PFC circuit error
(8 times)
(2 or 3 times)
If CO appears in the unit number display, there is a remote controller
(8 times)
(4 times)
error. Refer to the installation instruction sheet included with the remote
controller.
: OFF
7
8
FRESH-AIR INTAKE
SPECIAL INSTALLATION
METHODS
(1) Open up the knockout hole for the fresh-air intake, as shown in the
CAUTION
figure. (If using half-concealed installation, open up the top knockout
hole instead.)
When setting DIP switches, do not touch any other parts
on the circuit board directly with your bare hands.
For half concealed
installation
Indoor unit
Be sure to turn off the main power.
1. GROUP CONTROL SYSTEM
A number of indoor units can be operated at the same time using a
single remote controller.
(1) Wiring method (indoor unit to remote controller)
Indoor unit
Indoor unit
Indoor unit
No. 0
No. 1
No. 2
CAUTION
1 2 3
1 2 3
When removing the cabinet (iron plate), be careful not
to damage the indoor unit internal parts and surroun-
1 2 3
Remote
ding area (outer case).
controller
When processing the cabinet (iron plate), be careful
Remote controller wire
not to injure yourself with burrs, etc.
(2) DIP switch setting (indoor unit)
(2) Fasten the round flange (optional) to the fresh-air intake, as shown in
Set the unit number of each indoor unit using DIP switch on the indoor
the figure. (If using half-concealed installation, attach to the top.)
unit circuit board. (See following table and figure.)
DIP switch is normally set to make unit number No. 0.
Indoor unit
Unit number
DIP SWITCH No.
1
2
0
OFF
OFF
1
ON
OFF
2
OFF
ON
Round duct (option parts)
3
ON
ON
4
OFF
OFF
[After completing
INDOOR UNIT INSTALLATION ...]
5
ON
OFF
(3) Connect the duct to the round flange.
6
OFF
ON
(4) Seal with a band and vinyl tape, etc. so that air does not leak from the
7
ON
ON
connection.
8
OFF
OFF
9
ON
OFF
10
OFF
ON
11
ON
ON
12
OFF
OFF
13
ON
OFF
14
OFF
ON
15
ON
ON
Duct
Example : No. 3
ON
1
2
3
9
CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating
manual:
(1) Starting and stopping method, operation switching, temperature ad-
justment, timer, air flow switching, and other remote control unit op-
erations.
(2) Air filter removal and cleaning, and how to use the air louvers.
(3) Give the operating and installation manuals to the customer.
(4) If the signal code is changed, explain to the customer how it changed
(the system returns to signal code A when the batteries in the remote
control unit are replaced).
*(4)is applicable to using wireless remote control.
Indoor unit
No. 3
1 2 3
1 2 3
3
4
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
4
PART NO. 9378042018
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Table of Contents
Troubleshooting
