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apnapan

garage Door won't close completely

apnapan
14 years ago

I have Challenger series 3000 garage door closer in my garage. For last couple of daye it won't close completely but stays just 4-5" above ground. It is working perfectly in every other aspect. It operates well with remote or without remote,and apparently everything looks o.k.

I request friends in this forum to please help me and tell me where I should look and what could be the possible causes of this problem?