Troubleshooting; Error Codes - Chamberlain LiftMaster LA412 Installation Manual

To protect against fire and electrocution:
• DISCONNECT power (AC or solar and battery) BEFORE installing or
servicing operator.

ERROR CODES

NOTE: When cycling or disconnecting power (ac/dc) to the control board, it is recommended that you unplug the J15 plug.
TO VIEW THE ERROR CODES
The error codes are shown on the error code display.
...then press
and hold the
CLOSE button...
Press and
hold the
STOP
button...
The operator will show the error sequence number followed by the error
code number:
ERROR SEQUENCE NUMBER
The first number shown is the most
recent error (example: "01" shown
below). The display will show the
sequence of errors that occurred
starting with "01" and going up to error
"20".
TO SCROLL THROUGH THE SAVED ERROR CODES
Press the OPEN button
to cycle to the most
recent errors ("01").
The operator will only keep track of up to 20 errors, then will start saving
over the oldest errors as new errors occur.

TROUBLESHOOTING

...then press
and hold the
OPEN button
until "Er"
shows
ERROR CODE NUMBER
The second number shown after the
A SECOND
error sequence number is the error
LATER....
code itself (31-99, example" "31" shown
below). Refer to the chart on the
following page for an explanation of
each error code.
Press the CLOSE button
to cycle to the oldest
error (up to "20").
For continued protection against fire:
• Replace ONLY with fuse of same type and rating.
ERROR CODE DISPLAY
TO EXIT ERROR CODE DISPLAY
Press and release the STOP button to exit. The error code display will
also time out after two minutes of inactivity.
TO RESET THE ERROR CODE HISTORY
1. Press and hold the STOP button for six seconds. The display will
show "Er" then "CL" alternately for six seconds.
2. Release the STOP button. The error history has now been reset and
the display will show "- -" until a new error occurs.
3. Press and release the STOP button to exit.
37
OPEN, CLOSE, & STOP BUTTONS