Siemens LME21 series - Diagnostics of Fault Causes and Remedies; Error Code Table and Fault Interpretation

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Building Technologies CC1N7101en
HVAC Products 29.06.2006
Operation, indication, diagnostics (cont´d)
After lockout, the red fault signal lamp will remain steady on. In that condition, 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, interface diagnostics will be activated (for more detailed
information, refer to Data Sheet N7614).
The following sequence activates the diagnostics of the cause of fault:
EK
> 3 s
Flashing
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Error code table
EK
> 3 s
Interface diagnostics
PC / analyzer
OCI400
EK
< 3 s
7101z04e/0305
Reset
On
Visual diagnostics
Lockout position
Lockout position Lockout position
Error code table
Red blink code of
signal lamp (LED)
«AL» at
term. 10
Possible cause
2 blinks
hh
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
3 x blinks
hhh
On «LP» faulty
- Loss of
air pressure signal after «t10»
- «LP» is welded in normal position
4 blinks
hhhh
On Extraneous light when burner startup
5 blinks
hhhhh
On Time out «LP»
- «LP» is welded in working position
6 blinks
hhhhhh
On Free
7 blinks
hhhhhhh
On Too many losses of flame during operation
(limitation of repetitions)
- Faulty or soiled fuel valves
- Faulty or soiled flame detector
- Poor adjustment of burner
8 x blinks
hhhhhhhh
On Free
9 blinks
hhhhhhhhh
On Free
10 blinks
hhhhhhhhhh
Off Wiring error or internal error, output contacts,
other faults
14 blinks
hhhhhhhhhh
hhhh
On CPI contact not closed
During the time the cause of fault is diagnosed, the control outputs are deactivated
- Burner remains shut down
- External fault indication remains deactivated
- 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).
Diagnostics of the cau-
se of fault