LiftMaster code 3-3
The battery light keeps flashing green
Call a proThe circuit that charges the backup battery has a fault. It sits on the logic board.
What to do: The logic board needs replacing. Call a pro.
From the maker’s manuals:
- LiftMaster manual, PDF page 43 for the 8160W and 5 more models
- LiftMaster manual, PDF page 38 for 8360W
- LiftMaster manual, PDF page 32 for 8500WMC and 8500WMC-267
- LiftMaster manual, PDF page 44 for the 87504-267 and 4 more models
Which models each manual covers
- LiftMaster manual for models 8160W, 8160WB, 8164W, 8165W, 8365W-267, 8155W
- LiftMaster manual for model 8360W
- LiftMaster manual for models 8500WMC, 8500WMC-267
- LiftMaster manual for models 87504-267, 84504R, 84505R, 87802, 84602
Not this one? Look up another LiftMaster code
Garage Door Science isn’t affiliated with the opener makers LiftMaster, Chamberlain or Genie. Each meaning is our summary of the maker’s own manual, which we link.
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