Panasonic U-4LE2R5 Installation Instructions Manual page 43

7-2. Test Run Procedure
<Outdoor main unit control P.C. board>
Number of indoor units
setting switch
(SW3 and SW4)
(Check link wiring.)
<Outdoor main unit control P.C. board>
System address setting switch
(SW1 and SW2)
Make necessary
corrections.
Turn OFF power
to indoor and
outdoor units.
*
Check alarm
contents.
NO
If the terminating resistance pin on outdoor main unit P.C.
board 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.
(Do not allow short-circuited pin to remain short-circuited.)
See the section "7-5.
Setting Test Run Remote
Controller".
Recheck before the test run.
Set the number of indoor units.
Are indoor and outdoor control wires
connected to a multiple refrigerant system?
YES
CASE 2
System address setting
Is it possible to turn ON power only
for 1 refrigerant system where the
test run will be performed?
NO
Disconnect link wires for
multiple refrigerant system.
Short circuit the A.ADD pin on outdoor
main unit P.C. board for over 1 second
long and then open circuit.
LEDs 1 and 2 blink alternately.
(Approx. 2 - 3 minutes)
Are LEDs 1 and 2 on outdoor
unit P.C. board OFF?
YES
Connect link wires to original place.
Test run preparation is completed.
Set the remote controller to a test run.
Does system operate?
YES
Return remote controller
to normal mode.
End test run.
Note:
These settings are not made on the indoor unit P.C. board.
CASE 1
NO
YES
Make necessary
corrections.
Turn OFF power
to indoor and
outdoor units.
*
Check alarm
contents.
Follow the section "7-7. Self-Diagnosis Function Table and
Contents of Alarm Display" and resolve the problem.
NO
*
See the section "7-7. Self-Diagnosis Function Table and
Contents of Alarm Display".
43
Turn ON power to indoor and outdoor
units only for that refrigerant system.
Short circuit the A.ADD pin on outdoor
main unit P.C. board for over 1 second
long and then open circuit.
LEDs 1 and 2 blink alternately.
(Approx. 2 - 3 minutes)
NO
Are LEDs 1 and 2 on outdoor
unit P.C. board OFF?
YES