Mitsubishi PUHZ-SP100VHA - Page 31

31
10-3-3. 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 three seconds
after the change operation, the
self-diagnosis refrigerant
address changes from flashing
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 successi
vely 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 flash.
(For
(When operation is
OCH566A