23
TROUBLESHOOTING
WARNING
ELECTRICAL
Power MUST be turned off before servicing or adjusting the opener. Disconnect the supply when cleaning!
1. No indicator lights on controller
Are there any indicator lights ON the MCB (Main Control Board)?
YES: Check connection between MCB and wall control
Check for damage to control cable.
NO: Check power supply.
2. Power light illuminated on controller but door will not go up
Does the green status light come ON when button is being pressed?
YES: Check for loose motor terminal connection. If green light
begins to flash, Refer to Status Indicator (Green) Flash /
Problem Table.
NO: Check for control circuit isolating switch or connection between
MCB and controller.
Check for damage to control cable.
3. Power light illuminated on controller but door will not go down
Is the green status light flashing 2 or 3 times?
2 times: check for obstructions or IR
beam misalignment.
3 times: check for persistent IR beam
obstruction, misalignment or bump edge
wiring problem.
NO: continue onto next question.
Check for correct wiring connection and DIP switch settings on MCB.
4. Can’t set limits:
Does the orange light start flashing after the third press of the ‘set’ button?
YES: But green status light starts to flash ‘x’ times while
attempting to set upper limit. Refer to Status Indicator (Green)
Flash / Problem Table.
NO: Ensure all external devices and external push buttons are
disconnected from wall control.
Check for damage to control cable.
5.Opener activates from controller but not remotes
Are limits set?
YES: Change remote battery. If using Expansion board check
key switch position is in auto and check MCB and Expansion
board DIP switches are set correctly. Check that remote is
learned and receiver card is picking up signal.
NO: Set limits.
6. Opener will only travel around 200mm either way
Are limits set? i.e. orange limit light ON = limits not set.
YES: Check damaged to control cable. NO: Set limits. If unable to set limits refer to above no. 4
7. Works from controller but automatic functions do not: (only applicable when using an Expansion Board)
Is there a solid orange (COMS) light on the Expansion Board?
YES: MCB (Main Control Board) must be reset. Call
Chamberlain (1800 GRIFCO) for resetting procedure.
NO: Make sure key is in correct position.
8. Power light intermittently goes OFF and ON
Is the power light going off on the MCB also?
YES: Check supply wiring. NO: Check connection between MCB and controller.
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