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The gate opener doesn’t respond at all; no LED is
on.
Possibly power failure.
1. Check conductor and zero conductor.
2. Check house fusing.
Check whether the radio module is
seated correctly.
Immediately after the gate has started moving, it
stops and reverses.
Obstacle in area of gate.
Gate rough running (consult dealer)
Check gate area for objects
Check photocells
Reprogram travel distance
Gate can only be opened
Photocell blocks
Function and connection must be
checked
“Timer to close” doesn’t work.
Only works if the 2-cable photocell 770,771
or 772 installed.
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.
Photocell, a contact strip or the emergency
stop disables the control board.
Only one photocell was connected for OPEN
At least 1 pair of photocells active in
OPEN or CLOSED must be connected
The gate opener doesn’t respond at all, although
the controller has been connected (LEDs are on).
1. Remote control not programmed.
2. LEDs indicate a fault.
3. Photocell connected incorrectly.
4. Motor terminal possibly not connected
properly.
1. Programming remote control.
2. Find and rectify fault(s) (see description of
diagnostic LEDs).
3. Check photocell connection / programming.
4. Check terminals and connections.
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.
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.
FAQs
Pressing P1, P2 and P3 does not show any reaction
Jumper “RADIO” must be removed.
Check whether the radio module is
seated correctly.
Travel distance can’t be programmed.
1. Jumper setting not correct
2. See Diagnostic LED
3. Interferences in wiring of photocells, switch
or safety edge
4. Gate moves for 1 second only and stops
without reversal during programming
5. Magnetic limit switch
1: Follow the instructions of “initial operation”
closely
3: Remove for checking, then re-program
travel distance
4: Check RPM sensor/Encoder on control
board
5: Install magnetic limit switch properly
The operator sometimes moves slowly
Power failure
Common procedure. After power failure the
operator performs a selftest. Depending on
the operator model this can take a few
seconds or a complete cycle. Do not interrupt
this test via remote control or switch,
otherwise the limits may change. If this is the
case reprogram travel distance using P1.
Control board does not work
Travel distance not programmed
Program travel distance. See initial
operation / diagnosis LED
Control board does not work with transmitter
1. Transmitter not programmed
2. Photocells block
3. Jumper “RADIO”
1.Program transmitter
2.Check photocells, check diagnostic LEDs
3. Jumper “RADIO” must be plugged.
Gate doesn’t open completely
Gate heavy / rough running
Re-program travel distance
Consult dealer/specialist
Limit switches OPEN and CLOSED not correctly
indicated
Incorrect programming
During programming the limit switch OPEN
must be reached using P1, then limit switch
CLOSED. Switching motor cables is not
required.
Gate opens instead of closing automatically
(timer to close activated)
Incorrect programming
Repeat programming as described in these
instructions
