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7 Select the setting contents of the selected mode.
When the D [
(Fan Speed Adjustment)] button is pressed, the
current setting No. flashes. Use this to check the currently set con-
tents.
Setting No. display
Setting No. 1 = Simultaneous operation
indoor units balance
8 The contents set at steps 3 to 7 are registered.
When the A [ON/OFF] button is pressed, the mode No. and setting No. flash and registration begins. The flashing mode No. and
setting No. change to a steady light and setting ends.
* When "– –" appears at the mode No. and setting No. displays and "
Make sure there are no noise sources near the transmission line.
9 To select more functions, press the D [
? End function selection.
Press and hold down the C [TEMP. (
After a while, the function selection display disappears and the remote controller returns to the air conditioner off display.
* Do not operate the air conditioner from the remote controller for 30 seconds after the end of function selection.
NOTE: When the functions of an indoor unit were changed by function selection after the end of installation, always indicate the set contents
by entering a
or other mark in the appropriate check field of Table 1.
8
Self diagnosis
Retrieve the error history of each unit using the simple MA controller.
1 Switch to the self-diagnosis mode.
When the A [ON/OFF] button and the C [TEMP. (
are pressed for 5 seconds or longer, the figure shown below is
displayed.
Self-diagnosis address or self-
diagnosis refrigerant address
3 Self-diagnosis result display <Error history> (For the contents of the error code, refer to the indoor unit installation manual or service handbook.)
Error code 4 digits or error code 2 digits
4 Error history reset
The error history is displayed in 3 self-diagnosis results display.
When the D [
(Fan Speed Adjustment)] button is pressed two
times successively within three seconds, the self-diagnosis object ad-
dress and refrigerant address flash.
5 Self-diagnosis reset
There are the following two ways of resetting self-diagnosis.
Press the A [ON/OFF] button and the C [TEMP. (
Press the A [ON/OFF] button.→ Self-diagnosis resets and indoor units stop.
9 Remote Controller Check
1 First check the power mark.
When normal voltage (DC12V) is not applied to the remote controller,
the power mark goes off.
When the power mark is off, check the remote controller wiring and
the indoor unit.
" flashes at the room temperature display, communication is probably abnormal.
(Fan Speed Adjustment)] and repeat steps 3 to 8.
)] and D [
(Fan Speed Adjustment)] buttons at the same time for two seconds or longer.
)] button
(Alternate
display)
<When there is no error history>
)] button simultaneously for 5 seconds or longer. → Resets self-diagnosis and returns to the state before self-diagnosis.
(When operation is prohibited, this operation is ineffective.)
Select the setting No. using the B [TEMP. (
buttons.
Setting No. 3 = Remote controller built-in sensor
2 Set the address or refrigerant address No. you want to self-diagnosis.
When the B [TEMP. (
)] and C [TEMP. (
decreases and increases between 01 and 50 or 00 and 15. Set it to the
address No. or refrigerant address No. you want to self-diagnosis.
Approximately three seconds after the change op-
eration, the self-diagnosis refrigerant address
changes from flashing to a steady light and self-di-
agnosis begins.
Error detection attribute
Address 4 digits or unit address No. 2 digits
<When opposite side does not exist>
When the error history was reset, the display shown below appears.
When error history reset failed, the error contents are displayed again.
When the air conditioner cannot be controlled from the simple MA controller,
use this function to check the remote controller.
)] and C [TEMP. (
)] are pressed, the address
Power mark
)]
7
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