
14
PROBLEM LIGHTS SOLUTION
NightWatch
®
won’t
engage – thumb-
turn can’t be pulled
out
None If thumb-turn cannot be pulled out it can be
due to insufficient drill depth of the strike
hole. Try to engage NightWatch
®
with the
door open – if it works with the door open
the strike hole will have to be deepened.
User key or thumb
turn will not throw
or retract bolt
None Installation problem, cylinder tailpiece is
vertical instead of horizontal or vice versa.
PROGRAMMING:
Cannot add a new
user code
Red 1. User code entered differently 1
st
and 2
nd
time.
Red
Flashing
2. User code has already been assigned –
select a different user code that you have
not already programmed into the lock.
Note: Due to shared numbers on the buttons, the
code may be entered under different numbers. It
will still work for both numbers – test to confirm.
Red 3. You’ve already entered the maximum
allowable(20 user codes) number of user
codes.
Cannot delete a user
code
Red User code entered differently 1
st
and 2
nd
time.
Red
Flashing
User code not found on the list.
Cannot change the
Administrator code
Red Administrator code entered differently 1
st
and
2
nd
time.
Cannot delete all
user codes
Red Administrator code entered differently 1
st
and
2
nd
time.
Cannot deactivate/
reactivate
Red Administrator code entered incorrectly.
Lock exits
programming mode
Red /
None
An incorrect entry was made during
programming (typically adding or omitting
the “Enter” button).
I forgot my
Administrator code
None Check programming guide for code.
I changed but did
not document my
administer code
None Reset to Factory-set Administrative Code
(see programming guide or log onto www.
masterdoorlock.com for online user guide).
Lock will not leave
programming mode
or any issue not
covered above
None /
Various
Remove top battery, wait 10 seconds and
reinstall battery. This is similar to rebooting
a computer.
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