Error History Reset; Self-Diagnosis Reset - Mitsubishi Electric SUZ-M25VA Technical & Service Manual

11-3-3. Self-diagnosis <PAC-YT52CRA>
Retrieve the error history of each unit using the Simple MA controller.
Switch to the self-diagnosis mode.
1
When the A button and the
ON
OFF
displayed.
Set the address or refrigerant address No. you want to self-diagnosis.
2
When the B and C
.
Set it to the address No. or refrigerant address No. you want to self-diagnosis.
Self-diagnosis address
or self-diagnosis
refrigerant address
Self-diagnosis result display <error history>
3
(For the contents of the check code, refer to the indoor unit installation
Check code 4 digits or
check code 2 digits
<When there is no error history>

Error history reset

4
The error history is displayed in 3 self-diagnosis results display.
When the D button is pressed 2 times successively within 3 seconds, the self-diagnosis object address
and refrigerant address blink.
When the error history was reset, the display shown below appears.
When error history reset is failed, the error contents are displayed again.

Self-diagnosis reset

5
There are the following 2 ways of resetting self-diagnosis.
Press the A ON button and the C
OFF
→ Resets self-diagnosis and returns to the state before self-diagnosis.
Press the A button.
ON
OFF
(When operation is prohibited, this operation is ineffective.)
OCH684
button are pressed for 5 seconds or longer, the figure shown below is
.
C
are pressed, the address decreases and increases between 01 and 50 or 00 and 15.
.
(Alternate
display)
<When opposite side does not exist>
. button simultaneously for 5 seconds or longer.
Self-diagnosis resets and indoor units stop.
→
Approximately 3 seconds
after the change operation, the
self-diagnosis refrigerant
address changes from blinking
to a steady light and self-
diagnosis begins.
manual or service handbook.)
Error detection attribute
Address 3 digits or
unit address No. 2 digits
28