Trouble Shooting And Faq's; Does Not Open; Does Not Close - Chamberlain LiftMaster BARS1 Mode D'emploi

13

Trouble shooting and FAQ's

13.1 Barrier does not work (no movement) (refer to 13.2)
13.2

Does not open

Description
- barrier shows no reaction
- NO LED lighting up in control unit
- Voltage is applied up to control unit
- LED's on control unit are off
- Voltage is applied up to control unit
- LED'S on control unit are on
Everything seems normal, but barrier motor is very
warm
13.3

Does not close

Description
Barrier does not close resp. does not close as desired
(see also: Does not open)
Remedy / Reason / Solution
- power supply interrupted
- main switch turned off
- protection switch F1 has triggered
- fuse in control unit has blown
- fuse in control unit damaged
- overload due to connection of damaged
accessory (short circuit)
- switch for OPEN damaged
- short circuit (continuous contact) to
connected command device
- stop switch activated
- barrier has been released for manual
operation
- check proper limit switch setting. If both
limit switches have been activated
simultaneously the barrier does not
operate.
Limit switch wiring might be damaged
- barrier spring is damaged. Check release
and balance function of barrier
- LED's indicate other possible faults
- Rare: motor damaged
- Rare: capacitor damaged
- in case of continuous usage, the tempera
ture protection might be triggered. After
cooling down, unit operates normally again
- if fan is installed, check function via test
switch
Remedy / Reason / Solution
- barrier has been released
- a connected accessory item fails (switch,
push button, loop, Photocell)
- wrong setting of motor type to control unit
- limit switch already triggered; loose
35/40
Notes