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YES
Make necessary corrections.
Check the alarm
contents.
Check the alarm contents.
Turn OFF the indoor and
outdoor unit power.
NO
YES
NO
*1
*2
*3 *3
*2
CASE 1
CASE 2
CASE 3BCASE 3A
YES
YES
NO
YES
NO
NO
NO
YES
YES
NO
Recheck the items to check before the test run.
Have the outdoor sub units been connected?
Are the inter-unit control wires
connected to more than 1 refrigerant
system?
Is it possible to turn ON the power only
for the 1 refrigerant system where the
test run will be performed?
Will automatic address setting be
performed in Heating mode?
Is it OK to start the compressors?
Turn ON the indoor and
ou
tdoor unit power.
Short-circuit the mode change pin
(CN101) on the outdoor main unit PCB.
At the same time, short-circuit the
automatic address pin (CN100) for 1
second or longer, then release it.
Short-circuit the automatic address
pin (CN100) on the outdoor main
unit PCB for 1 second or longer,
then release it.
Short-circuit the automatic address pin (CN100)
on the outdoor main unit PCB for 1 second or
longer, then
release it.
Start indoor and outdoor unit
cooling operation.
LED 1 and 2 blink alternately.
Start indoor and outdoor unit
heating operation.
LED 1 and 2 blink alternately.
LED 1 and 2 blink alternately
(about 2 or 3 minutes).
Is it OK to start the compressors?
Turn ON the indoor and
outdoor unit power.
Turn OFF the indoor and
outdoor unit power.
Turn ON the indoor and
outdoor unit power for that
refrigerant system only.
Are LEDs 1 and 2 on the
outdoor unit PCB OFF?
Are LEDs 1 and 2 on the
outdoor unit PCB OFF?
Set the unit address.
Set the No. of outdoor units.
Set the No. of indoor units.
Set the system address.
When multiple outdoor main units exist, disconnect the terminals
extended from the shorted plugs (CN003) at all outdoor main unit
PCBs except for 1.
Alternatively, move the sockets to the OPEN side.
<Outdoor unit control PCB>
Unit No. setting switch
(S007)
<Outdoor unit control PCB>
Unit No. setting switch
(S006)
<Outdoor unit control PCB>
Unit No. setting switch
(S004 and S005)
<Outdoor unit control PCB>
Unit No. setti
ng switch
(S002 and S003)
(Check the link wiring.)
*1
The unit with the unit
No. set to 1 is the
main unit. All other
units are sub units.
Note: It is not necessary to remove the socket
that is used to short-circuit the terminal
plugs from the outdoor sub unit PCBs.
Refer to “Table of
Self-Diagnostic Functions and
Description of Alarm Displays.”
*2 A minimum of 5 hours must have passed after the
power was turned ON to the ou
tdoor unit.
*3 All indoor units operate in all refrigerant systems
where the power is ON.
Check that test run preparation is OK.
(Do not allow the short-circuited pins to remain short-circuited.)
Refer to the remote
controller test-run
settings.
Set the wired remote controller for test run.
Does system operate?
Return remote control to normal mode
Check and make corrections according to
“Table of Self-Diagnostic F
unctions.”
End test run.
Make necessary
corrections
Refer to Fig. 8-4
Items to Check Before the Test Run
1. Turn the remote power switch on at least 5 hours
before the test, in order to energize the crank
case heater.
2. After performing the leak inspection, applying
vacuum, and performing refrigerant charge for
the tubing which is connected on-site, fully open
the outdoor unit service valve. However if only
one outdoor unit is installed, a balance tube is
not used. Therefore, leave the valve fully closed.
3. When replacing the control PCB, be sure that
the settings on the new PCB match those on the
old PCB.
4. Use caution when making the settings. If there
are duplicated system addresses, or if the
settings for the Nos. of the indoor units are not
consistent, an alarm will occur and the system
will not start.
5. These settings are not made on the indoor unit
PCB.
8-2. Test Run Procedure
Fig. 8-3
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07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 71