On my last post the 211 3 stop, telescopic hydro had operated for 2 months trouble free with fan on control..
Early June that stopped. Failures occurred every 3rd to 10th trip.
Elevator would stop at any point in hoistway on FLRP or just stop and correct up or down. Replaced travel conductors to selector, replaced all magnets again, replaced selector guides again.
UNITEC (Otis) sold me a replacement: replacement would not operate on inspection from board, or access from car. determined IO/CPU board was bad.
Sent Original board to Access Electronics for repair: they found (after hours of normal operation) that board had an intermittent failure near U-78 (??) .Board could be repaired but program and parameters would be lost.
Just installed a loaner IO/CPU board and reset parameters and restored to operation.
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Question: Would any one have a file saved from about 10 years ago <<AP130985AAAZIP>> ??
If so contact... me with conditions for sending copy..
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Another IO/CPU board on way from UNITEC Parts. Maybe this one will work. ??