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Case 2
Automatic Address Setting in Heating Mode
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Indoor and outdoor unit power cannot be turned ON for each system separately.
In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating.
Therefore perform this process only after completing all refrigerant tubing work.
Automatic Address Setting from Outdoor Unit
1. Perform steps 1 – 4 in the same way as for
Case 1
.
2. Turn the indoor and outdoor unit power ON at all systems.
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3. To perform automatic address setting in
Heating mode
, on the outdoor main unit control PCB in the refriger-
ant system where you wish to set the addresses, short-circuit the automatic address pin (CN100) for 1 second
or longer, then release it.
(Be sure to perform this process for one system at a time. Automatic address settings cannot be performed for
more than one system at the same time.)
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(Communication for automatic address setting begins, the compressors turn ON, and automatic address
setting in Heating mode begins.)
(All indoor units operate.)
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(Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the main unit control
PCB turn OFF.)
4. At the outdoor main unit in the next (different) system, short-circuit the automatic address pin (CN100) for 1
second or longer, then release it.
↓
(Repeat the same steps to complete automatic address setting for all units.)
↓
5. Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 – 5, then use the remote controller and
complete automatic address setting.
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Refer to “Automatic Address Setting from Remote Controller.”
* To cancel, again short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped.
Be sure to perform automatic address setting again.