Siemens LMV5 Quick Start Manual page 141

Error Diag.
Device Display
code code
Any #
01
LMV5 /
Fault Flame
05 Flame
02
Detector Test
Dect.
03
Any #
01
Internal Fault
06 LMV5
02
Basic Unit
03
04
Any #
01
02
03
04
05
06
Devices
07
Internal Fault
10 conn. To
Basic Unit
08
LMV5
09
0A
0B
0C
0D
0E
0F
10
11
12
LMV5 QSG Rev 4
Meaning for the LMV5x system
Fault with Flame scanner (QRI) or Base Unit ( LMV5)
Fault during test of the flame signal amplifier
Fault during test of the flame signal amplifier
Crosstalk fault between test pin and flame signal amplifier
channel (with LMV52 FSVchannel QRI... / QRB...)
Crosstalk fault between test pin and FSV channel ION (Only
LMV52)
Fault with Base Unit (LMV5)
Fault internal hardware tests
Fault during test of the ignition relay
Fault during test of the safety relay
Fault during voltage supervision test
Relay voltage not switched off after reset
Fault with devices or wiring connected to the Base Unit (LMV5)
Basic unit has detected an improper circuit at one of the
outputs, a faulty diode, or a short-circuit in the power supply of
the contact feedback network. The diagnostic codes indicates
the input affected
Load controller on / off
Fan contact
Selection of oil-firing
Selection of gas-firing
Reset
Pressure switch oil maximum
Pressure switch oil minimum
Pressure switch valve proving
Safety valve oil feedback
Fuel valve 1 oil feedback
Fuel valve 2 oil feedback
Fuel valve 3 oil feedback
Safety valve gas feedback
Fuel valve 1 gas feedback
Fuel valve 2 gas feedback
Fuel valve 3 gas feedback
Safety chain burner flange
Safety relay feedback
Sec 5 Pg 15
Corrective action
If fault occurs sporadically: Improve shielding / isolation
of flame detector wires. High LMV5 temperatures can
also cause this fault. If fault occurs constantly: Lower
LMV5 temperature, replace flame detector or replace
LMV5
If fault occurs sporadically improve EMC. If fault occurs
continously, replace LMV5
1) Check connections of the neutrals to all of the
connected switches, valves, etc...
2) Check for capacitive loads that cause voltage to be
present on the terminal after the LMV deenergizes the
terminal. If voltage exists on an output terminal, such as
a fuel valve, after the LMV denergizes the terminal, this
will cause a fault. Voltage must drop to zero on the
terminal within about 10 ms after the terminal is de-
energized.
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