Siemens LMV5 Quick Start Manual page 149

Error Diag.
Device Display
code code
Flue Gas
Recirculation
2B
Pressure Switch
Any #
Flue Gas
Recirculation
2C
Pressure Switch
Any #
00
2D Valve not open
01
Devices
conn. To
Any #
LMV5
00
Valve or Closed
2E Position Indicator
(CPI) open
01
Gas Pressure has
2F dropped below
minimum Limit
Any #
Gas Pressure has
30
exceeded
maximum Limit
LMV5 QSG Rev 4
Meaning for the LMV5x system
Fault with devices or wiring connected to the Base Unit (LMV5)
FGR-PS = on, but should have been off
on
FGR-PS = off, but should have been on
off
Closed Position Indicator (CPI) = on, but should have been off
(Only LMV52) CPI via terminal StartRelease_Gas Closed
Position Indicator (CPI) = on, but should have been off
Closed Position Indicator (CPI) = off, but should have been on
(Only LMV52) CPI via terminal StartRelease_Gas Closed
Position Indicator (CPI) = off, but should have been on
Low Gas Pressure switch is open
High Gas Pressure switch is open
Sec 5 Pg 23
Corrective action
1) Check setpoint on FGR pressure switch. Adjust if
necessary.
2) If a FGR-PS fault occurs in Phase 70, call a siemens
representitve.
1) Check wiring to the fuel valves. With manual shutoff
valves closed, ensure that the fuel valves are opening in
the proper phase (see sequence diagrams)
2) Ensure CPI (POC) switches are opening when the
valve opens. If this does not happen check wiring, adjust
switch, or replace fuel valve actuator.
1) Check wiring to the fuel valves. Ensure fuel valves
are wired to the correct terminal (see wiring diagram)
With manual shutoff valves closed, ensure that the fuel
valves are opening in the proper phase (see sequence
diagrams).
2) Check wiring of the CPI (POC) switches. See wiring
diagram.
1) Check gas supply and / or manual shutoff valves.
2) Check setpoint and or wiring of Low Gas Presure
Switch.
1) Check pressure regulators for ruptured diaphrams.
2) Check setpoint and / or wiring of High Gas Presure
Switch.
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