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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 ‘Troubleshooting’ (pg.22)
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?
YES… 2 times - check for obstructions or IR beam misalignment
3 times - check for persistent IR beam obstruction, misalignment or bump edge wiring problem
Check for correct wiring connection and DIP switch settings on MCB
NO… continue onto next question
Does the green status light come ON when down button is being pressed?
YES… Check for loose motor terminal connection. If green light begins to flash refer ‘Troubleshooting’ (pg.22)
NO… Check for control circuit isolating switch or connection between MCB and controller
Check for damage to control cable
4. Can’t set limits:
Does the orange light start flashing after third press of the ‘set’ button?
YES... But green status light starts to flash ‘x’ times while attempting to set upper limit. Refer
Troubleshooting’ (pg.22)
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. Refer page 12. 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
Check for damage to control cable
Power MUST be turned off before servicing or adjusting the opener. Disconnect
the supply when cleaning!
TROUBLESHOOTING (cont)
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