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Case 3.b
Auto Address Setting in Cooling Mode
● In case of impossibility of turning ON power to indoor/outdoor units in each refrigerant system:
The indoor unit auto address setting cannot be made unless the compressor is started.
How to Control Auto Address from Outdoor Unit
1. Make all settings following the same procedure described under steps 1 to 4 of
5. Turn ON power to all indoor and outdoor units in all refrigerant systems.
6. If you wish to make auto address setting in
main unit control P.C. board for the desired auto address setting, short circuit the A.ADD pin (CN30) for over 1 second long and then
open circuit.
Be sure to install address settings in each refrigerant system. It is impossible to perform auto address setting in a multiple
refrigerant system simultaneously.
Communication for auto address setting begins and the compressor starts and auto address setting in cooling mode begins.
All indoor units can also be operated.
* To cancel, again short circuit the A.ADD pin (CN30) for over 1 second long and then open circuit.
LEDs 1 and 2 that indicate auto address setting is in progress go out and that process is stopped.
Be sure to perform auto address setting again.
Auto address setting is completed when the compressor stops and LEDs 1 and 2 on outdoor main unit control P.C. board go out.
7. Short circuit the A.ADD pin (CN30) on outdoor main unit in another refrigerant system for over 1 second long and then open circuit.
Repeat the same procedure and complete auto address setting.
8. Remote control operation is now available.
* It is impossible to perform auto address setting in cooling mode by the remote controller.
cooling mode
, while short circuiting COOL side of the MODE pin (CN40) on outdoor
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Case 2
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