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7-2. Test Run Procedure
<All outdoor unit control P.C.B>
Unit number setting switch
(SW5)
<Outdoor main unit control P.C.B>
Number of outdoor units setting
switch (SW6)
<Outdoor main unit control P.C.B>
Number of indoor units setting
switch (SW3 and SW4)
(Check link wiring.)
connected to a multiple refrigerant system?
<Outdoor main unit control P.C.B>
System address setting switch
(SW1 and SW2)
If the terminating resistance pin on outdoor main
unit P.C.B is made link wiring more than 2 refrigerant
systems, set to OPEN side excepting the nearest
outdoor unit and the farthest outdoor unit from the
CASE 3.b
NO
Is it OK to start the compressor?
Turn ON power to indoor and outdoor units.
*2
While COOL side of MODE pin (CN40) on
outdoor main unit P.C.B short circuited, short
circuit the A.ADD pin (CN30) on outdoor main
unit P.C.B for over 1 second long.
*3
Cooling of indoor and outdoor units started.
LEDs 1 and 2 blink alternately.
Test run preparation is completed. (Do not allow short-circuited pin to remain short-circuited.)
See the section "7-6. Setting
Test Run Remote Controller."
00_302411_EN.indd 41
Recheck before the test run.
Have outdoor sub units been connected?
YES
*1 The unit set to 1
*1
becomes the outdoor
Set outdoor unit address.
main unit.
Set No. of outdoor units.
Set No. of indoor units.
Are indoor and outdoor control wires
YES
System address setting
central controller.
Is it possible to turn ON power only
for 1 refrigerant system where the
test run will be performed?
NO
YES
Is auto address setting
performed in heating mode?
Is it OK to start the compressor?
Turn ON power to indoor and outdoor units.
*2
Short circuit the A.ADD pin (CN30) on outdoor
main unit P.C. board for over 1 second long and
then open circuit.
*3
Heating of indoor and outdoor units started.
LEDs 1 and 2 blink alternately.
Are LEDs 1 and 2 on
outdoor unit P.C.B OFF?
YES
Set the remote controller to a test run.
NO
Does system operate?
YES
Return remote controller
to normal mode.
End test run.
Notes:
1. Use caution when making the settings.
If there are duplicated system addresses, or if
the settings for the number of indoor units are not
NO
consistent, an alarm will occur and the system will
not start.
2. These settings are not made on the indoor unit P.C.
board.
NO
CASE 1
Note:
It is not necessary to control the terminating
resistance pin excepting the outdoor main
unit.
YES
CASE 2
Make necessary
corrections.
CASE 3.a
Turn OFF power
to indoor and
outdoor units.
*4
Check alarm
contents.
Make necessary
corrections.
Turn OFF power to
indoor and outdoor units.
*4
NO
Check alarm contents.
Follow the section "7-8. Self-Diagnosis Function Table and Contents of Alarm
Display" and resolve the problem.
*2 At least 5 hours must have passed after the power ON to the outdoor unit.
*3 All indoor units operate in all refrigerant systems where the power is ON.
*4 See the section "7-8. Self-Diagnosis Function Table and Contents of Alarm
Display".
41
Turn ON power to indoor and outdoor
units only for that refrigerant system.
Short circuit the A.ADD pin (CN30)
on outdoor main unit P.C.B for over 1
second long and then open circuit.
LEDs 1 and 2 blink alternately.
(Approx. 2 - 3 minutes)
NO
Are LEDs 1 and 2 on
outdoor unit P.C.B OFF?
YES
2018/7/4 13:27:51
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