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Gas burner control LME 21
Operation, display, diagnoses
Burner control has initiated lockout
Red signal lamp illuminated
Burner control in operation
Green flame signal lamp illuminated
FS
Diagnosis of cause of fault
FS
Blinkccode
2 x blinks
••
3 x blinks
•••
4 x blinks
••••
5 x blinks •••••
7 x blinks
•••••••
8...9 x blinks
•••••••••••••••••
10 x blinks
••••••••••••••••••
During the time the cause of fault is diagnosed, the control outputs are deactivated.
- The burner remains shut down
- Expection: Error message «AL» at terminal 10
The burner is switched on only after a reset is made
- Press lockout reset button 0,5...3 s
AL
After lockout, the red signal lamp is steady on.
Steady on
For reading the cause of fault, refer to the blink code given in the following table:
AL
Illuminated phase
(waiting time
Possibleccause
• No establishment of flame at the end of «TSA»
• Air pressure switch does not close
• Air pressure
• Time monitoring air pressure switch
• Loss of flame during operation
• free
• Internal error
Reset
Press lockout reset button for 0,5...3 s
Diagnosis of cause of faul
– Wait > 10 s
– Press lockout reset button for > 3 s
– Read blink code of red signal lamp
«Error code table»
Restart
Press lockout reset button for 0,5...3 s
Press lockout reset button
> 3 s
≥
10 s)
d
Störung
Error code table
- Fault or soiled ionization elektrode
- Faulty or soiled fuel valves
- Poor adjustment burner
- Faulty ignition device
- «LP» faulty
- «LP» incorrectly adjusted
- Fan motor does not run
- «LP» faulty
- «LP» incorrectly adjusted
- «LP» faulty
- Poor adjustment burner
- Faulty or soiled fuel valves
- Short-circuit between ionization probe
and ground
- Wiring error
- Faulty output contact
- Other errors
Blink code
Off
Blink code
ca. 3 s
23
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