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Building Technologies Division  Basic Documentation LME39…  CC1P7106en 
 3 Basic unit  08.12.2017 
3.2  Indication and diagnostics 
 
Multicolor indication of operational status and fault status messages via multicolor 
signal lamp in the lockout reset button 
 
Forwarding of operational status messages, fault status messages and full service 
information via  
- BCI communication via integrated jack RJ11 to display and operating unit AZL2... 
  or via additional BC interface OCI410 to PC software ACS410 
- UDS communication at interface diagnostic mode (UDS), with additional optical  
  interface OCI400..., via integrated signal lamp at lockout reset button, between 
  PC software ACS410 or to flue gas analysis unit of some manufacturers 
 
3.2.1 Communication/parameterization 
 
The display and operating unit AZL2... with LCD and menu-driven operation, facilitates 
enable a simple operation, parameterization and targeted diagnostics via menu-driven 
operation. 
When making diagnostics, the display shows operating states, the type of error and the 
startup counter (IBZ). Passwords protect the different parameter levels of the 
burner/boiler manufacturer and heating engineer against unauthorized access. Simple 
settings that the plant operator can make on site require no password. 
 
PC software ACS410 enabled a simple operation, comfortable readout of settings and 
operating states, the parameterization, trend recording and targeted diagnostic of 
LME39… 
Therefore, the separate available BC interface OCI410 (for BCI communication with 
LME39… to the PC) has to be connected to the integrated jack RJ11. 
 
 
ZL2… 
PC software ACS410