en-9
Gate opener does not function / does not
respond when button is pressed.
1. Connection to button is loose.
2. STOP switch connection is loose; STOP
LED is off.
3. Obstacle is blocking photocell in direction
of movement.
4. Safety edge is damaged or has
encountered an obstacle.
5. Gate opener is still released.
1. Check button and COM connections.
2. Check STOP switch connections
(STOP and COM).
3. Remove obstacle.
4. Remove obstacle and check
connections and wiring.
5. Lock gate opener.
“Timer to close” doesn’t work.
1. Only works if the 2-cable photocell 770E(ML) or 771E(ML) has been installed.
2. Then turn “timer to close” potentiometer in a clockwise direction.
Immediately after the gate has started moving, it
stops and reverses.
Obstacle in area of gate.
Check area of gate for objects
The gate opener hums slightly but has no force
1. Capacitor is not correctly connected to the
brown and black cable.
2. Force has not been set.
3. The gate opener has been released.
1. Check wiring of capacitor.
2. Turn force potentiometer in a clockwise
direction.
3. Lock gate opener.
The gate opener doesn’t respond at all, although
the controller has been connected (LEDs are on).
1. Remote control has not been programmed.
2. LEDs indicate a fault.
3. Photocell connected incorrectly.
4. Jumper between STOP and COM missing.
5. Motor terminal possibly not connected
properly.
1. Programming remote control.
2. Find and rectify fault(s) (see description
of LEDs).
3. Check photocell connection /
programming.
4. Connect simple jumper.
5. Check terminals and connections.
What happens in case of power failure?
All Chamberlain gate openers are equipped with a release system by means of which the gate
can be operated manually in case of power failure.
How long does it take to install a gate opener?
Depending on your specific technical skills, the installation of the mechanical components can
take approx. 3 to 8 hours. Firstly, the gate needs to be properly prepared such that installation
work can commence. The electrical connection work takes approx. 1 to 2 hours. Each user
should be instructed for at least 30 minutes with regard to the operation of the gate opener,
whereby its functionality should be demonstrated and safety aspects, protective facilities and
procedure in case of power failure should all be explained.
Is it possible to open wing for pedestrian mode?
Yes, it is possible. This process can be operated via remote control (a 2-channel remote
control is the minimum requirement here) or via switch operation.
Frequently asked questions
Gate can only be opened
1.Photocell blocks
2.Dip switch setting not as desired
1.Function and connection must be
checked
2.Check dip switch
The unit does not close automatically, it
OPENS automatically
Check setting of limitswitch
Limitswitch connected falsly
Control board does not work with transmitter
1. Transmitter not programmed
2. A photocell blocks
1.Program transmitter
2.Check photocells
The control board is not running
No covered distance learned
Learn covered distance.
See Initial operation
Universal receiver does not work
Observe polarity
Swap “+” and “-” cables
The wing does not open completely.
1.Is the gate travel programmed
correctly?
2.Is the force adjusted correctly?
1. Program gate travel again
2. Increase force (under wind load the
operator may run a bit slower)
The force setting has been altered, but no
difference is apparent.
Disconnect the controller from the power supply for a few seconds in order to activate the
control board’s self-diagnosis functionality.
The remote control’s range is too short.
The installation of an external aerial is recommended as the controller with the short cable
aerial is located either behind the post or near ground level in most cases. The optimum
location of the aerial is as high as possible in all cases. An appropriate aerial with installation
kit can be obtained from Chamberlain as an accessory with the product ref. no. ANT4X-
1EML.
The gate must follow a slope.
Not recommended! Change gate! The gate can move in an uncontrolled (dangerous) manner if
the gate opener has been released. A stronger force is needed in the upwards direction of the
slope and then, in the opposite direction, the gate opener’s force is too strong.
© Chamberlain GmbH 2009, all rights reserved
Summary of Contents for LiftMaster Professional CB224
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