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Troubleshooting Guide
Troubleshooting Guide
SECTION B: GENERAL OPERATING MODE TROUBLESHOOTING
Problem Likely Cause(s) Possible solution(s)
Cannot enter limit programming
• Door not closed fully
• Ensure the door has been
closed fully, if not the cause,
power cycle the system and
then try again.
Door moves short distances when
opened and repeated triggers
result in further normal operation
sometimes after several attempts
• Cold Start issue (pre Jan
2009)
• Units manufactured prior to
January 2009 had a software
issue, this has been resolved
(see website for further details)
Door closes by itself
• Auto-close inadvertently
engaged
• Disengage auto-close mode as
per page 42
Door moves consistently short
distances, will not open further
than 10 cm.
• Encoder problem
• Bad installation
• Door very light
• Check encoder
• If installation not carried out as
per this manual, that is the
likely reason why.
• Add weight to the door.
Door doesn’t close properly, there
is always a gap at the bottom
• Bad insallation
• Door not straight
• Door very light
• Rectify any installation
problems first.
• If the door is not straight it is
most likely impossible to rectify
as it involves removal of the
entire door. Add self-adhesive
foam rubber to the bottom
edge of the door to resolve.
• Add weight to the door.
Each new remote learnt into the
system, erases the previous one I
just learnt in.
• Procedure Incorrect
• Carefully follow the procedure
as shown on page 38. Note
that this product learns slightly
differently compared to other
SENTRY products
No auxillary power/ beams and/or
external receiver connected does
not work.
• Blown AUX FUSE (F1) in
wall console.
• Check (and replace) this fuse.
Frequently, the door opens slowly
when opened and then runs as
normal
• Play on the door
• There is likely free play on the
door somewhere. The DCC02
is sensing movement on the
encoder wheel when the door
is stationary.
The door opens by itself at
random times
• Another transmitter,
elsewhere was
inadvertently learned into
the system.
• Perform complete erasure of
all stored remotes and learn
them in again.
