Siemens LMV5 Series Technical Instructions

Error
Code
Diag.
Code
Device Display Meaning for the LMV5x System Corrective Action
07 Sync fault or CRC fault
08 Error code for main loop counter
09 Fault during stack test
0A Feedback values invalid
10
Unplaus Value
Nernst Voltage
O2 Module
Nernst voltage outside the valid range
12
Unplaus Value
Thermocouple O2
Module
Thermocouple voltage outside the valid range
13
Unplaus Value
Compensation
Element
Compensation element voltage outside the valid range
15
Unplaus Value
Flue Gas Temp
O2 Module
Temperature of combustion air sensor outside the valid range
(-20...+800 °C)
16
Unplaus Value
Flue Gas Temp
O2 Module
Temperature of flue gas sensor outside the valid range (-
20...+800 °C)
17 Fault during combustion air temperature sensor test
18 Fault during thermocouple test
19 Fault during compensation element test
1A Fault during channel comparison of O2 signal
1B Fault ADC test voltages
20
O2 Sensor Temp
too low
Temperature of QGO measuring cell too low
21
O2 Sensor Temp
too high
Temperature of QGO measuring cell too high
22
Internal Fault O2
Module
Fault during calculation test
If fault occurs constantly, replace O2 Sensor and / or
O2 Module
1) If fault occurs sporadically, reduce electrical noise.
2) If fault occurs continuously, replace PLL5..
Internal Fault O2
Module
1) Check the wiring between the O2 Module and the O2
sensor. Ensure high and low voltage are in seperate
conduits.
2) Check the power supply to the O2 Module
3) Check fuse in the O2 Module
4) Check the heating control on the O2 Sensor
5) Check the temperature inside the O2 Sensor terminal
box. Should be between -13 and 248
o
F
5) If fault occurs constantly, Replace O2 Sensor and /
or Module.
Fault with 02 Module (PLL5..) or Oxygen Sensor (QGO2..)
1) Check the wiring between the O2 Module and the O2
sensor.
2) Check the ambient / flue gas temperature. Compare
to valid range.
1) Check the wiring between the O2 Module and the O2
sensor.
2) If fault occurs constantly, replace O2 Sensor and / or
O2 Module
Internal Fault O2
Module
1) Check the temperature of heated sensor via
parameter QGO SensorTemp. Minimum operating
termperature is 1202 °F, maximum 1382 °F. O2 sensor
could take up to 20 minutes to reach temperature.
2) Ensure O2 sensor is installed properly (see mounting
section) and that stack gas velocity is correct. Min = 3.2
ft / sec, max = 32 ft / sec.
3) Check the power supply to the O2 Module
4) Check fuse in the O2 Module
PLL5..AB
Section 7 Page 53 SCC Inc.
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Siemens LMV5 Series Specifications

General

Brand	Siemens
Model	LMV5 Series
Category	Control Systems
Language	English