Siemens LME39.400C2 - Error code list

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Building Technologies Division Basic Documentation LME39… CC1P7106en
21 Error code list 08.12.2017
21 Error code list
Error code Clear-text Potential cause
Loc: 2 No flame at the end of safety time 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
Loc: 3 Air pressure failure (air pressure switch has
welded in the no-load position, drop-out after
specified time) (air pressure switch flame-on
response time)
Error air pressure switch
- Air pressure failure on completion of specified
time
- Air pressure switch has welded in the no-load
position
Loc: 4 Extraneous light Extraneous light on burner startup
Loc: 5 Air pressure failure, air pressure switch has
welded in the operating position
Air pressure switch time supervision
- Air pressure switch has welded in the operating
position
Loc: 7 Loss of flame Loss of flame during operation too frequent
(limitation of repetitions)
- Defective or soiled fuel valves
- Defective or soiled flame detector
- Poor adjustment of burner
Loc: 10 Errors that cannot be assigned (application)
Internal error
Wiring error or internal error, output contacts,
other errors, manual locking
Loc: 14 CPI error CPI contact not closed
Table 11: Error code list

Note!
When using coiled igniters, flame detection may be improved by increasing
parameter 228 (tfz). To prevent an extended safety time (TSA, parameter 227) in that
case, the postignition time (t3n, parameter 257) must be reduced to the same extent.
Warning!
If the set safety time (TSA) is too long, the safety functions will become
ineffective. Compliance with the relevant standards must be ensured!