Siemens LMV51 Series Basic Documentation page 249

Error Diagnostic Device
code code
E3 --- O2
F0 --- BU
F1 # BU
01
F1 BU
02
F1 BU
03
F1 BU
04
F1 BU
05
F1 BU
06
F1 BU
07
F1 BU
F2 # BU
F2 07 BU
F2 08 BU
F2 0A BU
Siemens Building Technologies Basic Documentation LMV5...
HVAC Products 16 Addendum 1: List of fault status messages of LMV5... system
Display
Fault Feedback O2 Module Basic unit has detected a ROM-CRC fault
in the O2 module when checking its feed-
back signal
Internal Fault Basic Unit Plausibility fault during calculation of inter-
polation values
Internal Fault Basic Unit Internal fault during calculation of precon-
trol
Internal Fault Basic Unit
Internal Fault Basic Unit
Internal Fault Basic Unit
Internal Fault Basic Unit
Internal Fault Basic Unit
Internal Fault Basic Unit Internal fault calculation of precontrol.
Undefined value in the curves used for the
calculation
Internal Fault Basic Unit Internal fault calculation of precontrol.
Undefined value for a type of fuel parame-
ter
Code for faulty temperature values from
O2 module when calculating the air rate
change
Internal Fault Basic Unit O2 module has delivered invalid value
Flue Gas Temp too high Flue gas temperature outside the permis-
sible value range
QGO in Heating-up Phase QGO probe not yet sufficiently heated up
Meaning for the LMV5x system Troubleshooting
Check CAN cabling and terminators as specified
If fault occurs sporadically: Improve EMC.
If fault occurs constantly: Replace defective module
*1)
Check curve setting, check fuel parameters depending on
the selected type of fuel
Set permissible flue gas temperature to a higher level
Wait until probe has reached its operating temperature
249/301
CC1P7550en
13.08.2004