Hitachi PC-ART Installation Manual page 13

INSTALLATION MANUAL
22
c. Address Change Mode
Change the address (unit number) of the indoor unit.
Normal Mode (when unit is not operating)
1. Change to the optional setting mode
Press the "OK" switch and the "RESET" switch
simultaneously for more than 3 seconds.
2. Selection of Optional Setting Mode
"SERVICE" is
Press the temperature control
indicated and the
switch, select "04" for the address change
mode number is
mode, and then press the "CHECK"
À ashed.
switch.
4. Change the address of the indoor unit
"CHECK" switch
The result of changing the address is displayed several seconds after the "OK" switch has been pressed. "AH" is temporarily displayed if address change
processing has been completely succeeded, while "EE" is temporarily displayed if the address was unable to be changed. If this happens, repeat the
procedure for changing the address.
5. Changing the address of another indoor unit
6. Ending Address Change
"A/C" À ashes while connections are being
checked.

NOTES:
In the case of having changed the address of the indoor unit with the remote control switch, make
sure to record the new refrigerant cycle number and unit number of the indoor unit that has been
changed in the entry column on the printed board.
3. Selection of Indoor Unit
"OK"
Switch
or
Select the new address to be used after
changing the address.
The refrigerant cycle number display can be changed
from 00 to 63 by pressing the "TIME"
the unit number display can be changed from 00 to 63 by
pressing the "TEMP." control or
The address display changes from À ashing to remaining
lit when the "OK" switch is pressed after selecting an
address.
Select the address of the indoor unit to be changed.
Pressing the "TEMP." control › or š switch after the result of an address change is displayed in step 4 for changing
the address of an indoor unit, returns to the selection of an indoor unit of step 3.
Repeat steps 3 and 4 until all indoor unit address changes have been completed.
Press the "RESET" switch during
selection of an indoor unit of
step 3return to the normal mode.
Once the address of the indoor
unit has been successfully
changed, processing for checking
connections begins.
"04" indicated.

NOTES:
In case of selecting the address not to change, "NO FUNCTION" is displayed.

NOTES:
or switch, and
A refrigerant cycle number of "99" is used in case
of temporarily avoiding setting an address when all
switch.
indoor unit refrigerant cycle numbers or unit numbers
are in use. If an address has been set to "99", make
sure to subsequently change the address to an
address within the normal address range.
7. Turning ON Power of Indoor Unit
Once turn OFF the power of the indoor unit 3 to 5 minutes after
completing step 6. After the display on the remote control switch is no
longer displayed, turn ON the power of the indoor unit.

NOTES:
After ending address change in step 6, make sure to turn off the
power of the indoor unit. If this procedure is not performed, the
automatic address function may not be performed properly.
Select the address of the indoor unit to
be changed.
Press the "TEMP." or
select the address of the indoor unit
and then press the "CHECK" switch.
The address and refrigerant cycle number
of the indoor unit to be set change from
À ashing to remaining lit.
Entry column
switch to