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Building Technologies    CC1N7101en 
HVAC Products    27.11.2008 
Operation, indication, diagnostics 
EK
7101z01/0804
 
Lockout reset button «EK» is the key operating element for resetting 
the burner control and for activating / deactivating the diagnostics func-
tions. 
 
LED
7101z02e/0305
Red
Yellow
Green
 
The multicolor signal lamp (LED) in the lockout reset button is the key 
indicating element for visual diagnostics and interface diagnostics. 
 
Both «EK» and LED are located under the transparent cover of the lockout reset but-
ton. 
 
There are 2 diagnostics choices: 
1.  Visual diagnostics: Operational status indication or diagnostics of the cause of fault 
2.  Interface diagnostics: With the help of the OCI400 interface adapter and the 
ACS410 PC software or flue gas analyzers of different makes 
 
Visual diagnostics: 
In normal operation, the different operating states are indicated in the form of color 
codes according to the color code table given below. 
 
During startup, status indication takes place according to the following table: 
 
Color code table for multicolor signal lamp (LED) 
Status Color code Color 
Waiting time «tw», other waiting states 
......................................... 
Off 
Ignition phase, ignition controlled 
z  z  z  z  z  z 
Flashing yellow 
Operation, flame o.k. 
.......................................... 
Green 
Operation, flame not o.k. 
          
Flashing green 
Extraneous light on burner startup 
 S  S  S  S  S 
Green-red 
Undervoltage 
z S z S z S z S z S 
Yellow-red 
Fault, alarm 
S......................................... 
Red 
Error code output (refer to «Error code 
table») 
S S S S 
Flashing red 
Interface diagnostics 
S S S S S S S S 
Red flicker light 
 
...... 
Steady on 
S 
Red 
 
Off 
z 
Yellow 
 
 
Green 
Operation 
Operational status  
indication 
Legend