Siemens LMO14 Series Manual page 10

Diagnostics of the
cause of fault
10/12
Siemens Building Technologies
HVAC Products
After lockout, the red fault signal lamp LED remains steady on.
In that condition, the visual diagnostics of the cause of fault according to the error code
table can be activated by pressing the lockout reset button for more than 3 seconds.
Pressing the reset button again for at least 3 seconds, the interface diagnostics will be
activated (for more detailed information, refer to Data Sheet 7614).
The following sequence activates the diagnostics of the cause of fault:
Lockout position
On
EK
> 3 s
Red blink code of
signal lamp (LED)
2 blinks
hh
3 blinks
hhh
4 blinks
hhhh
5 blinks
hhhhh
6 blinks
hhhhhh
7 blinks
hhhhhhh
8 blinks
hhhhhhhh
9 blinks
hhhhhhhhh
10 blinks
hhhhhhhhhh
During the time the cause of fault is diagnosed, the control outputs are deactivated.
Burner remains shut down
-
Fault status signal «AL» at terminal 10, according to the error code table
-
The diagnostics of the cause of fault is quit and the burner switched on again by reset-
ting the burner control. Press the lockout reset button for about 1 second (< 3 seconds).
Lockout position
Visual diagnostics
Flashing
EK
Error code table
> 3 s
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
Error code table
«AL» at Possible cause
term. 10
On No establishment of flame at the end of «TSA»
Faulty or soiled fuel valves
-
Faulty or soiled flame detector
-
Poor adjustment of burner, no fuel
-
Faulty ignition equipment
-
Free
On
On Extraneous light on burner startup
Free
On
On Free
Too many losses of flame during operation (limi-
On
tation of the number of repetitions)
Faulty or soiled fuel valves
-
Faulty or soiled flame detector
-
Poor adjustment of burner
-
On Time supervision oil preheater
Free
On
Off Wiring fault or internal fault, output contacts
Lockout position
Interface diagnostics
PC / analyzer
EK
< 3 s
CC1N7130en
15.10.2002
Reset