Error Code List - Siemens LMO39 Series Basic Documentation

Error code Clear-text
Loc: 2 No flame at the end of safety time
Loc: 3 Free
Loc: 4 Extraneous light
Loc: 5 Free
Loc: 7 Loss of flame
Loc: 8 Oil preheater
Loc: 9 Free
Loc: 10 Errors that cannot be assigned (application)
Internal error
Building Technologies

20 Error code list

Table 10: Error code list
Basic Documentation LMO39...
20 Error code list
Potential cause
No establishment of flame at the end of safety time
- Defective or soiled fuel valves
- Defective or soiled flame detector
- Poor adjustment of burner, no fuel
- Defective ignition equipment
Free
Extraneous light on burner startup
Free
Loss of flame during operation too frequent
(limitation of repetitions)
- Defective or soiled fuel valves
- Defective or soiled flame detector
- Poor adjustment of burner
Time supervision oil preheater
Oil preheater failed 5 times during prepurging
Free
Wiring error or internal error, output contacts, other
errors, manual locking
55/61
CC1P7154en
15.03.2018