Test Run; Test Run Procedure; Items To Check Before The Test Run - Panasonic U-8ME1E81 Service Manual

1. Test Run

Test Run Procedure

<Outdoor unit control PCB>
Unit No. setting switch (SW5)
<Outdoor unit control PCB>
Unit No. setting switch (SW6)
<Outdoor unit control PCB>
Unit No. setting switch
(SW3 and SW4)
(Check the link wiring.)
<Outdoor unit control PCB>
Unit No. setting switch
1
(SW1 and SW2)
When multiple outdoor main units exist, disconnect the
Refer to Fig. 4-1
terminals extended from the shorted plugs (CN67) at
all outdoor main unit PCBs except for 1. Alternatively,
move the sockets to the OPEN side.
2
NO
3
CASE 3B
Is it OK to start
the compressors?
Turn ON the indoor and
outdoor unit power.
*2
4
Short-circuit the cooling side of the
mode change pin (CN40) on the
outdoor main unit PCB.
At the same time, short-circuit the
automatic address pin (CN30) for 1
second or longer, then release it.
*3
Start indoor and outdoor unit
5
cooling operation.
LED 1 and 2 blink alternately.
Are LEDs 1 and 2 on the
outdoor unit PCB OFF?
6
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.
7
Refer to the
remote controller
test-run settings.
Return remote control to normal mode.
End test run.
8
Recheck the items to check before the 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
power only for the 1 refrigerant system where
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 (CN30) 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
Does system Check and make corrections according
operate? to "Table of Self-Diagnostic Functions."
YES

Items to Check Before the Test Run

1.
2.
NO
*1
*1
The unit with the
unit No. set to 1
is the main unit.
3.
All other units
are sub units.
4.
5.
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
Turn OFF the
indoor and outdoor
Check the alarm
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.
1-2
Turn the remote power switch on at least 5
hours before the test, in order to energize the
crankcase heater.
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.
When replacing the control PCB, be sure that
the settings on the new PCB match those on the
old PCB.
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.
Turn ON the indoor and outdoor
unit power for that refrigerant
system only.
corrections.
Short-circuit the automatic
address pin (CN30) on the
outdoor main unit PCB for 1
second or longer, then release it.
unit power.
LED 1 and 2 blink alternately
(about 2 or 3 minutes).
contents.
NO Are LEDs 1 and 2 on the
outdoor unit PCB OFF?
Refer to "Table of
Self-Diagnostic Functions and
Description of Alarm Displays."
2WAY SYSTEM
Address Settings
YES