Chamberlain LiftMaster PROFESSIONAL ECO400K Manuel D'installation page 74

The control board does not work any more using
the transmitter, only with the switch and even then
only as long as a button is pressed and kept
pressed.
Open with push-button (1) or CLOSE with push-
button (2)
The unit does not close automatically, it
OPENS automatically
Control board does not work with transmitter
Gate can only be opened
The control board is not running
The wings do not open completely.
(Remote controlled) universal receiver does not work Observe polarity (terminals 15/16)
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1.Dip switch setting not as desired
2.A safety photocell, a contact strip or the
stop disables the control board
3.Only one photocell was connected for
OPEN
The motor cables are not connected correctly
1.transmitter not programmed
2.An photocell blocks
1.photocell blocks
2.Dip switch setting not as desired
No covered distance learned
1.Insufficient force in the event of high
wind loads
(entire gates)
2.Gate sluggish/heavy
1.Correction of the dip switch,
elimination of fault required. If the fault
cannot be repaired, it will be necessary
to "reset" and reprogram (see photocell)
2.At least one photocell must be
connected and activated for CLOSED
or OPEN & CLOSED.
The motor cables (brown,black) must be
swapped
1.Program transmitter
2.Check photocells
1.Function and connection must be
checked
2.Check dip switch
Learn covered distance.
See Initial operation
1.Reset force ( increase )
2.Improve ease of movement
3.Program control board again
Swap "+" and "-" cables