41
Recheck before the test run.
Set outdoor unit address.
System address setting
Is it OK to start the compressor?
Turn ON power to indoor and outdoor units.
Set the remote controller to a test run.
Return remote controller
to normal mode.
Follow the section “7-8. Self-Diagnosis Function Table and Contents of Alarm
Display” and resolve the problem.
Test run preparation is completed. (Do not allow short-circuited pin to remain short-circuited.)
Cooling of indoor and outdoor units started.
LEDs 1 and 2 blink alternately.
Heating of indoor and outdoor units started.
LEDs 1 and 2 blink alternately.
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.
Short circuit the A.ADD pin (CN30) on outdoor
main unit P.C. board for over 1 second long and
then open circuit.
Is it OK to start the compressor?
Make necessary
corrections.
Check alarm
contents.
Make necessary
corrections.
Turn OFF power to
indoor and outdoor units.
Check alarm contents.
Turn OFF power
to indoor and
outdoor units.
Short circuit the A.ADD pin (CN30)
on outdoor main unit P.C.B for over 1
second long and then open circuit.
Turn ON power to indoor and outdoor
units only for that refrigerant system.
LEDs 1 and 2 blink alternately.
(Approx. 2 - 3 minutes)
Turn ON power to indoor and outdoor units.
Set No. of outdoor units.
Set No. of indoor units.
CASE 1
CASE 2
CASE 3.a
CASE 3.b
Have outdoor sub units been connected?
Are LEDs 1 and 2 on
outdoor unit P.C.B OFF?
Are LEDs 1 and 2 on
outdoor unit P.C.B OFF?
Does system operate?
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
central controller.
Are indoor and outdoor control wires
connected to a multiple refrigerant system?
Is it possible to turn ON power only
for 1 refrigerant system where the
test run will be performed?
Is auto address setting
performed in heating mode?
NO
NO
YES
YES
YES
YES
End test run.
NO
NO
YES
NO
*2
*3
*4
*4
*2
*3
*1 The unit set to 1
becomes the outdoor
main unit.
Note:
It is not necessary to control the terminating
resistance pin excepting the outdoor main
unit.
<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)
<Outdoor main unit control P.C.B>
System address setting switch
(SW1 and SW2)
See the section “7-6. Setting
Test Run Remote Controller.”
*1
YES
YES
NO
NO
(Check link wiring.)
*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”.
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
consistent, an alarm will occur and the system will
not start.
2. These settings are not made on the indoor unit P.C.
board.
7-2. Test Run Procedure
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