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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 again during auto address setting.
* When auto address setting is normally completed, both LEDs 1 and 2 go out.
Blinks alternately
● 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 power is turned ON (and auto address setting is not in progress), one or more indoor units are
confirmed in that system; however, the number of indoor units does not match the number that was set.
This status remains even if the indoor unit address (indoor EEPROM item code : 13) is set more than 13
indoor units. In this case, be sure to set the indoor unit address less than 12.
Under auto address setting
Alternately
Auto address setting completed
There are inconsistencies between the number of indoor units and setting number of indoor units.
(at the time of auto address setting)
Simultaneously
See the section "7-7. Self-Diagnosis Function Table and Contents of Alarm Display".
Alternating
● Display of remote controller
CZ-RTC5A
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.
LEDs 1 and 2 go out and address setting is interrupted.
In other cases, correct settings by referring to the following table and perform auto address setting again.
1
Contents of display
CZ-RTC4
(Outdoor) 2 - (Indoor) 2-1, 2-2, 2-3...
51
Blinking "
" indicator
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