Service manual

97
[Operating Procedure]
 Check the function selection settings.
 Set the indoor unit number.

Press the
ON/OFF
button so that "- -" blinks in the unit number
display area.
* To set modes 01 to 06 or 15 to 22, select unit number "00".
* To set modes 07 to 14 or 23 to 28, carry out as follows:
• To set each indoor unit individually, select " 01" to "04".
• To set all the indoor units collectively, select " AL".
 Confirm the refrigerant address and unit number.
Press the
MODE
button to confirm the refrigerant address
and unit number.
After a while, "- - " will start to blink in the mode number display area.

When the refrigerant address and unit number are confirmed by pressing the
MODE
button, the corresponding indoor unit will start fan operation.
function selection. However, if "00" or "AL" is selected as the unit number,
all the indoor units corresponding to the specified refrigerant address will start
fan operation.
* "88" will blink in the room temperature display area if the selected refrigerant
address does not exist in the system.
Furthermore, if
"F"
appears and blinks in the unit number display area and the
refrigerant address display area also blinks, there are no units that corre-
spond to the selected unit number. In this case, the refrigerant address and unit
number may be incorrect, so repeat steps  and  to set the correct ones.
*
When grouping different refrigerant systems, if an indoor unit other than the
one to which the refrigerant address has been set to perform fan operation,
there may be another refrigerant address that is the same as the specified one.
In this case, check the DIP switch of the outdoor unit to see whether such a
refrigerant address exists.
 Select the mode number.
Press the
[ TEMP] buttons ( and ) to set the desired
mode number.
(Only the selectable mode numbers can be selected.)
 Select the setting content for the selected mode.
Press the
MENU
button. The currently selected setting number
will blink, so check the currently set content.
Press the
[ TEMP] buttons ( and ) to select the desired
setting number.
 Register the settings you have made in steps  to  .
Press the
MODE
button. The mode number and setting number
will start to blink and registration starts.
The mode number and setting number will stop blinking and remain lit,
indicating the end of registration.
* If " - - - " is displayed for both the mode number and setting number and "
" blinks in the room temperature display area, a transmission error may have occurred.
Check to see if there are any sources of noise or interference near the transmission path.
 If you wish to continue to select other functions, repeat steps  to  .
 Complete function selection.

Hold down the ( mode is 15 to 28) and buttons
simultaneously for at least 2 seconds.
FILTER
After a while, the function selection screen will disappear and the air condi-
tioner OFF screen will reappear.
* Do not operate the remote controller for at least 30 seconds after completing
function selection. (No operations will be accepted even if they are made.)
Note
If a function of an indoor unit is changed by function selection after installation is complete, make sure that a " " mark, etc. of the table 1 is shown to indicate the change.
Refrigerant address
display section
Unit number
display section
Mode number
display section
Mode number
display section
Mode number 02 = Indoor temperature detection
Setting number display section
Setting number 3 = Remote controller built-in sensor
Setting number 1 = Indoor unit operating average
TEST
Changing the function selection settings for each mode will change its relevant mode function. Perform steps  through  to check all the function selection settings,
and then change the settings as necessary.
For the initial settings, refer to the <Table 1> in the chapter 12-1. The following is the procedure to operate the remote controller internal sensor.
This helps you find the location of the indoor unit for which you want to perform
Press the buttons ( and ) ) to indicate the
indoor unit
No. in turn such as 00 → 02 → 03 → 04 → AL.
Select the unit No. to which the function selection applies.
Turn off the remote controller. Set the outdoor address.
*If the and temperature displays flash “” for 2 seconds and stop flashing, this seems to be an error. Check for noise source or interference around the
transmission path.
Note: If the operation is made incorrectly before completion, finish operation by going to the step  and restart from the step .
Hold down 2 buttons simultaneously for 2 seconds: the 
and  buttons to set the modes 01 through 14, and the 
and  buttons to set the modes 15 through 28.
The “ ” will flash for a while and show “--” as below.
FUNCTION
SELECTION
.
Press the buttons ( and ) to select the
desired refrigerant address. The refrigerant address changes from "00" to "15".
(This operation is not possible for single refrigerant systems.)
[ CLOCK]
FUNCTION
SELECTION
00 refrigerant address
Indoor unit
Fan mode
Unit number 01
Unit number 02
Outdoor unit
Example) When the refrigerant address is set to 00 and the unit number is 02.
Remote controller
Confirm
OCH425F