Siemens LMV51 Series Basic Documentation page 216

Error Diagnostic Device
code code
24 01/02/03 BU
25 --- BU
25 00 BU
25 01/02/03 BU
26 --- BU
26 00 BU
26 01/02/03 BU
27 --- BU
28 --- BU
29 --- BU
2A --- BU
2B --- BU
2C --- BU
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Siemens Building Technologies Basic Documentation LMV5...
HVAC Products 16 Addendum 1: List of fault status messages of LMV5... system
Display
Extraneous Light on Shutdown
No Flame at End of Safety Time
No Flame at End of Safety Time
No Flame at End of Safety Time
Loss of Flame
Loss of Flame
Loss of Flame
Air Pressure on
Air Pressure off
Fan Contactor Contact is on
Fan Contactor Contact is off
Flue Gas Recirculation Pressure Switch
on
Flue Gas Recirculation Pressure Switch
off
Meaning for the LMV5x system
(LMV52...) Basic unit has detected extra-
neous light during startup phase.
Bit-by-bit coding:
Bit 0 = flame QRI.../QRB... present
Bit 1 = flame ION present
No flame detected at the end of safety time
TSA1
No flame detected at the end of safety time
TSA1
(LMV52...) No flame detected at the end of
the safety time.
Bit-by-bit coding:
Bit 0 = flame QRI.../QRB... present
Bit 1 = flame ION present
Detection of loss of flame during operation
Loss of flame during operation detected
(LMV52...) Loss of flame during operation
detected.
Bit-by-bit coding:
Bit 0 = flame ION present
Air pressure = on, but should have been off
Air pressure = off, but should have been on
FCC signal = on, but should have been off
FCC signal = off, but should have been on
FGR-PS = on, but should have been on
FGR-PS = off, but should have been on
Troubleshooting
CC1P7550en
13.08.2004