Error Codes And Rectification Of Faults; Types Of Faults And Troubleshooting - Siemens RVW26.000B27 Basic Documentation

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Error codes and rectification of faults

14.1 Types of faults and troubleshooting

A distinction is made between «external» and «internal» faults.
External faults are:
· Invalid combinations of input signals
·
Inadmissible values of input signals
· Defective peripheral components, such as actuators or potentiometers
Internal faults are:
·
Faults detected by the RVW26... when testing the hardware
·
Faults detected by the RVW26... when testing its program and data memories
· Inadmissible programming
Since each and every fault can have consequences from a safety point of view, the
RVW26... rates both types of faults equal:
If a fault occurs, the control unit will always initiate lockout!
Note:
For diagnostic purposes, it may be helpful to note the error code displayed by the
RVW26... and the time the fault occurred before making the reset (e.g. in the burner's
Operating Manual).
The following table gives a detailed description of the individual faults and contains
hints on troubleshooting.
Electronic Air / Fuel Ratio Control System
14 Error codes and rectification of faults
CC1P7873.1en
15.10.2002