Unlock Button On Boiler Management Units - Siemens Albatros2 Technical Manual

11.3
Unlock
Lock and unlock
Siemens
Building Technologies

Unlock button on Boiler Management Units

The unlock button (see Section USB connection, unlock button [➙ 35]) functions
only on Boiler Management Units (BMU).
Unlocking function
Certain errors result in a locking of LMS14/15. These errors cannot be reset via
menus.
Locking error features:
Remain saved also after mains off.
l
Unlocking is required even after the fault no longer is present.
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If error still persists, remove first the error.
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w Use a sharp object (e.g. ballpoint pen) or a screwdriver, up to size 2.
To unlock an LMS14/15, hold the unlock button down for 0.4...10 seconds.
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The LMS14/15 is now unlocked.
1. To lock an LMS14/15, hold the unlock button down for more than 10 seconds.
The LMS14/15 is now locked.
2. You unlock the LMS14/15 again using the unlock button, by holding it down
between 0.4...10 seconds.
The unlocking button executes the same function as switching of LMS input
"Reset" (X4/X4a).
Graphical User Interface UI400
Unlock button on Boiler Management Units
Appendix 11
99
CE1U2348en
2014-06-03