Technical Data Manual

Test Run
5 - 3
1
8
7
6
5
4
3
2
2. Test Run Procedure
YES
Make necessary
corrections.
Check the alarm
contents.
Check the alarm contents.
Turn OFF the indoor and
outdoor unit power.
NO
*2
*3 *3
*2
CASE 1
CASE 2
CASE 3B CASE 3A
YES
YES
NO
YES
NO
NO
NO
YES
YES
NO
Recheck the items to check before the test run.
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
outdoor unit power.
Short-circuit the mode change pin
(CN50) on the outdoor unit PCB.
At the same time, short-circuit the
automatic address pin (CN51) for 1
second or longer, then pull it out.
Short-circuit the automatic
address pin (CN51) on the
outdoor unit PCB for 1
second or longer, then
release it.
Short-circuit the automatic address
pin (CN51) on the outdoor 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
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 No. of indoor units.
Set the system address.
When multiple outdoor units exist, disconnect the
terminals extended from the shorted plugs
(CN33) at all outdoor unit PCBs except for 1.ޓ
Alternatively, move the sockets to the OPEN side.
<Outdoor unit control PCB>
Unit No. setting switch
(S004)
<Outdoor unit control PCB>
Unit No. setting switch
(S002 and S003)
Refer to Fig. 5-4
(Check the link wiring.)
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
outdoor 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 Functions.”
End test run.
Make necessary
corrections
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 crankcase heater.
2. Turn the outdoor service valves
(2 locations) to the full-open positions.
●
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.
●
These settings are not made on the indoor unit PCB.
Fig. 5-3
TD831156-00_MINI_VRF_SYS.indb 3TD831156-00_MINI_VRF_SYS.indb 3 2012/01/31 14:38:212012/01/31 14:38:21