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Landis & Staefa Division CC1N7421E December 04, 1998 13/16

• Burner control has initiated lockout

⇒ Red fault LED on

• Reset

Press lockout reset button for 0.5...3 s

• Diagnosis of cause of fault

–

Wait > 10 s

–

Press lockout reset button for > 3 s

–

Read blink code of red fault LED

⇒ «Error code table»

• Burner control in operation

⇒ Green flame signal LED on

• Restart

Press lockout reset button for 0.5...3 s

• Read flame establishment time

–

Press lockout reset button for > 3 s

–

Read blink code of green flame signal

LED

⇒ «Error code table»

After lockout, the red fault LED is steady on.

For reading the cause of fault, refer to the blink code given in the following table:

Error code table

Blink code Possible cause

2 x

••

•

No establishment of flame at the end of «TSA»

–

Faulty or soiled detector electrode

–

Faulty or soiled fuel valves

–

Poor adjustment of burner

3 x

•••

• Air pressure monitor does not close

–

«LP» faulty

–

«LP» incorrectly adjusted

–

Fan motor does not run

4 x

••••

• Air pressure monitor does not open or extraneous light on burner startup

–

«LP» faulty

–

«LP» incorrectly adjusted

5 x

•••••

• Extraneous light during pre-purging

–

Or internal device fault

7 x

•••••••

• Loss of flame during operation

–

Poor adjustment of burner

–

Faulty or soiled fuel valves

–

Short-circuit between detector electrode and ground

8...17 x

••••••••

...................

••••••••••

•••••••

• Free

18 x

••••••••••

••••••••

• Air pressure monitor opens during pre-purging or operation

–

«LP» incorrectly adjusted

–

Four times loss of flame during operation (LMG25)

19 x

••••••••••

•••••••••

• Faulty output contact

–

Wiring error

–

External power supply on output terminal

20 x

••••••••••

• Internal device fault

During the time the cause of the fault is diagnosed, the control outputs are deactivated.

–

The burner remains shut down

–

Exception: fault status signal «AL» at terminal 10

The burner is switched on only after a reset is made.

–

Press lockout reset button for 0.5...3 seconds

Operating concept

Diagnosis of cause of

fault

Red LED on

LED on (waiting time > 10 s)

Press lockout reset

button

for > 3 s

Blink code

Off

Approx.

3 s

Blink code

Fault

Brand	Siemens
Model	LMG2 Series
Category	Controller
Language	English

Siemens LMG2 Series User Manual

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Siemens LMG2 Series Specifications

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