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The failure mode described here where the flaps won't go down to neutral
from the full reflexed position (all the way up) has happened to my 235
several times. In each case, I have found the same thing mentioned by Bob
Belshe - the actuator jams the flap linkage by pulling the actuator shaft
too far in. In my case, I found that the magnetized rod that's supposed to
trip the magnetic limit switch got past the set-point without breaking the
circuit. Once that happens, the motor keeps right on happily running until
things jam and the breaker pops.

I intend to install a positive action limit switch (a micro-switch) in place
of the magnetic switch, that will be physically actuated by the flap drive
lever at the full reflex position. That will eliminate this irritating
failure mode, once and for all.

Dan Schaefer

LML website:   http://www.olsusa.com/Users/Mkaye/maillist.html
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Please send your photos and drawings to marvkaye@olsusa.com.