Siemens LMV5 Series Technical Instructions page 241

Error Diag.
Device Display
Code Code
Fault with devices or wiring connected to the Base Unit (LMV5)
Gas Pressure
at Valve proving:
31
Valve on Gas
Side leaking
No Gas Pressure
Valve Proving:
32
Valve on Burner
Side leaking
Oil Pressure on
33 although Oil
Pump off
Devices
Any # conn. to Oil Pressure
34
LMV5 below Minimum
Oil Pressure
35
above Maximum
No Start Release
36
for Oil
No direct Heavy
37
Oil direct start
Lack of Gas
38
Program
Any #
01 Internal Fault
39
Basic Unit
02
03
LMV5
No Burner ID
3A Any #
defined
No Service
3B Any #
Password defined
3F Any # Error-free
Section 7
Meaning for the LMV5x System
PS(M)-VP (Pressure Switch Valve Proving) has detected
pressure between the gas valves during the atmospheric test.
Switch opened when should have been closed.
PS(M)-VP (Pressure Switch Valve Proving) has detected the
absence of pressure between the gas valves during the
pressure test. Switch closed when should have been open.
Low oil pressure switch is closed when oil pump is not running.
Low oil pressure switch is open when oil pump is running.
High oil pressure switch is open.
Switches wired to the start release oil terminal (typically the
atomizing media PS) are not closed when anticipated.
Switches wired to the direct start heavy oil terminal are not
closed when anticipated.
Shortage-of-gas program in progress.
Fault with Base Unit (LMV5)
Parameter of max. safety time faulty
Fault with timer1
Fault with timer2
Fault with timer3
No burner identification defined
No service password defined
The LMV5 is error-free.
Page 33
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Corrective Action
1) Bubble test gas valve to ensure that the upstream
valve is not leaking. If leaking, replace valve.
2) Ensure that the setpoint of the PS(M)-VP is 50% of
the pressure upstream of V1 (upstream valve).
1) Bubble test gas valve to ensure that the downstream
valve is not leaking. If leaking, replace valve.
2) Ensure that the setpoint of the PS(M)-VP is 50% of
the pressure upstream of V1 (upstream valve).
1) Configure oil train so that low oil pressure switch is
off when the oil pump is not running.
2) Check to ensure switch is wired Normally Open.
1) Ensure oil pressure exists at the switch when the oil
pump is running. Adjust pressure reg. if needed.
2) Check to ensure switch is wired Normally Open.
Check setpoint of switch.
1) Ensure excess oil pressure is not present at the
switch. Adjust pressure reg. if needed.
2) Check to ensure switch is wired Normally Closed.
Check setpoint of switch.
1) Check setpoint of switches.
2) Ensure switches are closing and opening at the
correct times (see sequence diagram).
1) If repetition counter is enabled (outside North
America), the LMV is waiting for gas pressure to return.
If fault occurs continuously, replace LMV5.
Enter a unique burner Identification. Typically the
burner SN.
Enter a valid service password.
None
SCC Inc.