0 0 My Sub zero refrigerator is not cooling properly. Model Number 550 Request Resource Materials Job aids, Videos Refrigerator Sub-Zero Share Facebook Twitter Google+ Tumblr LinkedIn Mail Fred Abernethy asked 7 years ago Answers (1) Filter Sort by: Newest First Oldest FirstMost VotesRecently Active Post Answer Keyword Match all Match any 0 0 Thanks for asking a question. I looked up that model number and we have a video on a similar issue. I put a link below the answer. Video Link Video Link - Heat Exchanger AV Repair Help answered 7 years ago You must login to reply Showing 1 result Your Answer Please login first to submit.