2WAY VRF SYSTEM
Test Run
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5. Auto Address Setting
Case 3.b
(Auto address setting in cooling mode)
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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 automatic address from outdoor unit
1. Make all settings following the same procedure described under steps 1 to 4 of Case 2 .
5. Turn ON power to all indoor and outdoor units in all refrigerant systems.
6. If you wish to make auto address setting in cooling mode , while short circuiting COOL side of the MODE pin (CN40) on
outdoor 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.
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.
* Automatic address setting in cooling mode cannot be done from the remote controller.
Auto Address Setting* by Remote Controller
<Procedure of CZ-RTC2>
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Selecting each refrigerant system individually for automatic address setting
---Automatic address setting for each system: Item code “A1”
1. Press the remote controller timer time
button and
button simultaneously.
(Press and hold for 4 seconds or longer.)
2. Next, press either the temperature setting
or
button.
(Check that the item code is “A1”.)
3. Use the
button to set the system No. to perform automatic address setting.
4. Then press the
button.
(Automatic address setting for one refrigerant system begins.)
(When automatic address setting for one system is completed, the system returns to
normal stopped status.) <Approximately 4 – 5 minutes is required.>
(During automatic address setting, “
” is displayed on the remote controller.
This message disappears when automatic address setting is completed.)
5. Repeat the same steps to perform automatic address setting for each successive system.
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