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Building Technologies Division User Manual LMS14… CC1U7471en
6 The settings in detail 28.01.2015
6.41 Lockout/local reset
6.41.1 Lockout
Certain errors cause the LMS14... to go to lockout, which means that the burner control
is locked, thus preventing it from resuming operation. Lockout is stored in EEPROM
and is maintained – even beyond power OFF – until a reset is made, independent of
whether or not the error is still pending.
Certain errors causing lockout can be reset from a remote location via the operating
terminals; all errors causing lockout can be reset by pressing the reset button on the
unit
6.41.2 Local reset via the reset button
The reset button can be connected in 2 different ways:
Via a separately connected pushbutton (refer to Connection diagram)
Via an operator terminal/room unit with optional hardware reset button
To make a valid reset, the button must be pressed for more than about 400 ms but for
no more than 10 seconds. If pressed for less than about 200...400 ms, there will be no
response. If pressed for more than 10 seconds, the LMS14... will be locked and
released again only after another reset.
If lockout did not occur, there will be no response to a valid reset.
In case the LMS14… has gone to lockout, a valid reset will be followed by a restart. If
there is a lockout error at the time the unit is reset, resetting causes the LMS14… to
instantly trigger lockout again.
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