20
21
OCH706
11-3-3. Self-diagnosis <PAC-YT52CRA>
Retrieve the error history of each unit using the Simple MA controller.
1
Switch to the self-diagnosis mode.
When the
A
button and the
button are pressed for 5 seconds or longer, the figure shown below is
2
Set the address or refrigerant address No. you want to self-diagnosis.
When the
B
and
C
are pressed, the address 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.
ON
OFF
.
.
.
C
Self-diagnosis address
or self-diagnosis
refrigerant address
Approximately 3 seconds
after the change operation, the
self-diagnosis refrigerant
address changes from blinking
to a steady light and self-
diagnosis begins.
3
Self-diagnosis result display <error history>
the contents of the check code, refer to the indoor unit installation
Check code 4 digits or
check code 2 digits
Error detection attribute
Address 3 digits or
unit address No. 2 digits
<When there is no error history>
<When opposite side does not exist>
(Alternate
display)
4
Error history reset
The error history is displayed in
3
self-diagnosis results display.
When the
D
button is pressed two times successively within 3 seconds, the self-diagnosis object address
When the error history was reset, the display shown below appears.
When error history reset is failed, the error contents are displayed again.
5
Self-diagnosis reset
There are the following two ways of resetting self-diagnosis.
Press the
A
button and the
C
button simultaneously for 5 seconds or longer.
→
Resets self-diagnosis and returns to the state before self-diagnosis.
Press the
A
button.
→
Self-diagnosis resets and indoor units stop.
prohibited, this operation is ineffective.)
ON
OFF
.
ON
OFF
displayed.
manual or service handbook.)
and refrigerant address blink.
(For
(When operation is
