Panasonic U-72MF2U9 Service Manual page 207

5. Auto Address Setting
Display During Auto Address Setting
On the surface of outdoor unit control P.C. board
1
2
LED
* Do not short circuit the A.ADD pin (CN30) again during auto address setting.
LEDs 1 and 2 go out and address setting is interrupted.
* When auto address setting is normally completed, both LEDs 1 and 2 go out.
Blinks alternately
In other cases, correct settings referring to the following table and perform auto address setting again.
Contents of LEDs 1 and 2 on outdoor unit control P.C. board
: Illuminating
: Blinking
: Go out
LED 1 LED 2
After turned ON power (not during auto address setting), it is entirely impossible to communicate with
the indoor unit in the system.
After turned ON power (not during auto address setting), although the indoor units more than 1 unit in
the system are recognized, there are inconsistencies between the number of indoor units and setting
number of indoor units.
Under auto address setting
Alternately
Auto address setting completed
There are inconsistencies between the number of indoor units and setting number of indoor units.
Simultaneously (at the time of auto address setting)
See the section "8. Self-Diagnosis Function Table and Contents of Alarm Display".
Alternating
Display of remote controller
CZ-RTC3 / CZ-RTC5
Auto address
Assigning
Cancel
Request concerning recording the indoor/outdoor unit combination Nos.
After auto address setting has been completed, be sure to record them for future reference.
List the outdoor main unit system address and the addresses of the indoor units in that system in an easily visible location (next
to the nameplate), using a permanent marking pen or similar means that cannot be abraded easily.
Example: (Outdoor) 1 - (Indoor) 1-1, 1-2, 1-3...
These numbers are necessary for later maintenance. Please be sure to indicate them.
1
(Outdoor) 2 - (Indoor) 2-1, 2-2, 2-3...
Contents of display
CZ-RTC4
6 - 13
3WAY VRF SYSTEM
Blinking " " indicator
Test Run
1
2
3
4
5
6
7
8
9