10
6. Electrical work
Function table
Select unit number 00
Select unit numbers 01 to 03 or all units (AL [wired remote controller]/07 [wireless remote controller])
*1 When the power supply returns, the air conditioner will start 3 minutes later.
*2 Power failure automatic recovery initial setting depends on the connecting outdoor unit.
Mode
Settings
Mode no.
Setting no. Initial setting
setting
Power failure automatic recovery
Not available
01
1
*
2
Available *1
2
*
2
Indoor temperature detecting
Indoor unit operating average
02
1
Set by indoor unit’s remote controller
2
Remote controller’s internal sensor
3
LOSSNAY connectivity
Not Supported
03
1
Supported (indoor unit is not equipped with outdoor-air intake)
2
Supported (indoor unit is equipped with outdoor-air intake)
3
Power voltage
240 V
04
1
220 V, 230 V
2
Mode
Settings
Mode no.
Setting no. Initial setting
setting
Filter sign
100Hr
07
1
2500Hr
2
No
fi
lter sign indicator
3
7. Test run
7.1. Before test run
►
After completing installation and the wiring and piping of the indoor and
outdoor units, check for refrigerant leakage, looseness in the power supply
or control wiring, wrong polarity, and no disconnection of one phase in the
supply.
►
Use a 500-volt megohmmeter to check that the resistance between the power
supply terminals and ground is at least 1.0 M
Ω
.
►
Do not carry out this test on the control wiring (low voltage circuit) termi-
nals.
Warning:
Do not use the air conditioner if the insulation resistance is less than 1.0 M
Ω
.
Insulation resistance
7.2. Test run
7.2.1. Using wired remote controller.
■
Make sure to read operation manual before test run. (Especially items to secure safety)
Step 1
Turn on the power.
●
Remote controller: The system will go into startup mode, and the remote controller power lamp (green) and “PLEASE WAIT” will blink. While the lamp and message
are blinking, the remote controller cannot be operated. Wait until “PLEASE WAIT” is not displayed before operating the remote controller. After the power is turned on,
“PLEASE WAIT” will be displayed for approximately 2 minutes.
●
Indoor controller board: LED 1 will be lit up, LED 2 will be lit up (if the address is 0) or off (if the address is not 0), and LED 3 will blink.
●
Outdoor controller board: LED 1 (green) and LED 2 (red) will be lit up. (After the startup mode of the system
fi
nishes, LED 2 will be turned off.) If the outdoor controller
board uses a digital display, [- ] and [ -] will be displayed alternately every second.
If the operations do not function correctly after the procedures in step 2 and thereafter are performed, the following causes should be considered and eliminated if they
are found.
(The symptoms below occur during the test run mode. “Startup” in the table means the LED display written above.)
Symptoms in test run mode
Cause
Remote Controller Display
OUTDOOR BOARD LED Display
< > indicates digital display.
Remote controller displays “PLEASE WAIT”,
and cannot be operated.
After “startup” is displayed, only green lights up.
<00>
• After power is turned on, “PLEASE WAIT” is displayed for 2
minutes during system startup. (Normal)
After power is turned on, “PLEASE WAIT” is
displayed for 3 minutes, then error code is
displayed.
After “startup” is displayed, green(once) and
red(once) blink alternately. <F1>
• Incorrect connection of outdoor terminal block (R, S, T and S
1
,
S
2
, S
3
.)
After “startup” is displayed, green(once) and
red(twice) blink alternately. <F3, F5, F9>
• Outdoor unit’s protection devise connector is open.
No display appears even when remote controller
operation switch is turned on. (Operation lamp
does not light up.)
After “startup” is displayed, green(twice) and
red(once) blink alternately. <EA. Eb>
• Incorrect wiring between the indoor and outdoor unit (Polarity
is wrong for S
1
, S
2
, S
3
.)
• Remote controller transmission wire short.
After “startup” is displayed, only green lights up.
<00>
• There is no outdoor unit of address 0. (Address is other than 0.)
• Remote controller transmission wire open.
Display appears but soon disappears even
when remote controller is operated.
After “startup” is displayed, only green lights up.
<00>
• After canceling function selection, operation is not possible for
about 30 seconds. (Normal)