7-2. Test Run Procedure - Panasonic U-8ME1E8 Installation Instructions Manual

7-2. Test Run Procedure

Recheck the items to check before the test run.
<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)
(Check the link wiring.)
<Outdoor unit control PCB>
Unit No. setting switch
(S002 and S003)
When multiple outdoor main units exist, disconnect the
Refer to Fig. 7-4
terminals extended from the shorted plugs (CN072) at
all outdoor main unit PCBs except for 1. Alternatively,
move the sockets to the OPEN side.
power only for the 1 refrigerant system where
NO
CASE 3B
Is it OK to start
the compressors?
Turn ON the indoor and
outdoor unit power.
*2
Short-circuit the cooling side of the
mode change pin (CN085) on the
outdoor main unit PCB.
At the same time, short-circuit the
automatic address pin (CN054) for 1
second or longer, then release it.
*3
Start indoor and outdoor unit
cooling operation.
LED 1 and 2 blink alternately.
Are LEDs 1 and 2 on the
outdoor unit PCB OFF?
Check that test run preparation is OK.
(Do not allow the short-circuited pins to remain short-circuited.)
Set the wired remote controller for test run.
Refer to the Does system
remote controller
test-run settings.
Return remote control to normal mode
End test run.
Have the outdoor sub
units been connected?
YES
Set the unit address.
Set the No. of outdoor units.
Set the No. of indoor units.
Are the inter-unit control
wires connected to more than 1
refrigerant system?
YES
Set the system address.
Is it possible to turn ON the
the test run will be performed?
Will automatic address setting be
performed in Heating mode?
CASE 3A
YES
Is it OK to start the
compressors?
Turn ON the indoor and
outdoor unit power.
*2
Short-circuit the automatic
address pin (CN054) on the
outdoor main unit PCB for 1
second or longer, then release it.
*3
Start indoor and outdoor unit
heating operation.
LED 1 and 2 blink alternately.
NO
YES
NO
Check and make corrections according
operate? to "Table of Self-Diagnostic Functions."
YES
NO
*1
*1
The unit with the
unit No. set to 1
is the main unit.
All other units
are sub units.
CASE 1
NO
Note: It is not necessary to remove
the socket that is used to short-
circuit the terminal plugs from
the outdoor sub unit PCBs.
CASE 2
YES
NO
Make necessary
corrections
Turn OFF the indoor
and outdoor unit
Check the alarm
contents.
*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.
Fig. 7-3
40
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. 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.
Turn ON the indoor and outdoor
unit power for that refrigerant
system only.
Make necessary
corrections.
Short-circuit the automatic
address pin (CN054) on the
Turn OFF the
outdoor main unit PCB for 1
indoor and outdoor second or longer, then release it.
unit power.
LED 1 and 2 blink alternately
(about 2 or 3 minutes).
Check the alarm
contents.
NO
Refer to "Table of
Self-Diagnostic Functions and
Description of Alarm Displays."
Are LEDs 1 and 2 on the
outdoor unit PCB OFF?
YES