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Error

Code

Diag.

Code

Device Display Meaning for the LMV5x System Corrective Action

F0 Any #

Internal Fault

Basic Unit

Plausibility fault during calculation of interpolation values

1) If fault occurs sporadically: Reduce electrical noise.

2) If fault occurs constantly: Replace LMV5.

Any # Internal fault during calculation of precontrol

01 -

02 -

03 -

04 -

05 -

Internal fault calculation of precontrol. Undefined value in the

curves used for the calculation

Internal fault calculation of precontrol. Undefined value for a

type of fuel parameter

Any #

Code for faulty temperature values from

O2 module when calculating the air rate change

See diagnostic code.

07 O2 module has delivered invalid value If fault occurs constantly: Replace LMV5

Flue Gas Temp

too high

Flue gas temperature outside the permissible value range

Increase parameter MaxTempFlGasGas(Oil) or

decrease flue gas temperature.

QGO in Heating-

up Phase

QGO probe not yet sufficiently heated up

Check the temperature of the O2 Sensor via parameter

QGO SensorTemp . The sensor needs to be a

minumum of 1202 °F to operate properly. Wait up to 20

minutes for sensor to reach operating termpeature.

Fault with Base Unit (LMV5) or Connected Components

Internal Fault

Basic Unit

1) Check to make sure that all curves (Ratio control, O2

guard, and O2 control) are defined at every point in the

firing range. If the ratio control curve has 12 points, the

O2 guard must have 12 points, and the O2 trim must

have 11 points.

LMV5

Internal Fault

Basic Unit

Section 7 Page 58 SCC Inc.

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Brand	Siemens
Model	LMV5 Series
Category	Control Systems
Language	English

Siemens LMV5 Series Technical Instructions

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