Diagnostic LED
(SilentDrive MR850EVO)
"-" NEGATIVE LABEL
"+" POSITIVE LABEL
15AMP FUSE
"+" POSITIVE TERMINAL
"-" NEGATIVE TERMINAL
BATTERY TO BE PLACED INTO
THE HOUSING WITH THE
TERMINALS AS SHOWN
RETAINING BRACKET
BATTERY BACKUP UNIT (OPTIONAL ACCESSORY LM950EV/ LM850EV ONLY)
CONTINUED
Battery Backup Unit (BBU) Diagnostics
GREEN LED:
All systems are normal.
• A solid LED light indicates the battery is fully charged.
• A solid LED light indicates the battery is fully charged.
NOTE: Battery does not have to be fully charged to
operate the motor unit.
ORANGE LED:
The motor unit has lost power and is operating off the
BBU.
• A solid LED indicates the opener is activating the
door and is operating off the BBU.
• A flashing LED indicates the battery is low.
• Once the power is restored the BBU will recharge.
is indicated by a flashing green LED.
RED LED:
An error has been detected and the BBU will
automatically shut off. The BBU will attempt to restart
by reconnecting to the battery. If the error is still
present it will shut itself off again. This process will
repeat every 5 minutes or until the error has been
resolved. This is used to prevent further draining of
the battery.
• If a red LED remains on when the power is restored
please call for service.
Replace Battery
• Unplug the BBU from the opener and remove the
screws holding the BBU to the wall.
• Remove the battery retaining bracket.
• Withdraw the battery from the housing and
disconnect the terminals.
• Reinstall the new battery in the reverse process,
taking care to connect the positive and negative
terminals correctly.
• Reconnect the BBU to the opener as in step 2 of
the previous page.
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