48/56
Service
© Gyr
D000027979 en t – E350 Series 2, 3-Phase ZxF100Ax/Cx – User Manual
6 Service
6.1 Operating
Faults
If the LCD is not readable or the data readout does not work, the
following
points should be checked first:
1. Is the mains voltage present (main fuses intact)?
2. Is the maximum permissible ambient temperature not exceeded?
3. Is the optical interface and/or the liquid crystal display clean (not
scratched, painted over, misted over or soiled in any way)?
Danger of short-circuits
Never clean soiled meters under running water or with high pressure
devices. Water penetration can cause short-circuits. To remove normal dirt
like dust a damp cloth is sufficient. If the meter is heavily soiled, it should be
dismantled if necessary and sent to an authorised service centre, so that a
new plastic viewing window can be fitted.
If none of the points listed is the cause of the fault, the meter should be
disconnected, removed and sent to the responsible Gyr service
centre (according to section 6.3 "Repairing Meters").
6.2 Error
Codes
There are two kinds of errors: persistent and transient errors. Transient
error codes are automatically reset at the next readout. The errors can also
be cleared either using the formatted write command C150 or by power
cycling the meter.
Persistent error codes cannot be reset in the field. If the reason for the error
persists, for example in the case of a component failure, power cycling will
not clear the error. A meter showing a persistent error code must be
considered unsafe for further use. Contact a Gyr Service Centre for
support.
6.2.1 Structure of an Error Code
An error code is an eight digit value. Each digit of the error code represents
four errors (i.e. four bits of the error register). The status of the four bits is
shown in hexadecimal code, i.e. the single digits may show values between
0 (no error code set) and F (all four error codes set).
Error codes are added
As all errors are shown in hexadecimal code, a single error can appear in
various ways depending on the presence of other errors
.
