Sierra Instruction Manual
InnovaSonic
®
203 Economical
41
7.
Error Diagnosis
The ultrasonic flow meter has advanced self-diagnostics functions and displays any errors in the upper right corner
of the LCD via definite codes in a date/time order. Hardware error diagnostics are usually performed upon each
power on. Some errors can be detected during normal operation. Undetectable errors caused by incorrect settings
and unsuitable measurement conditions can be displayed accordingly. This function helps to detect the errors and
determine causes quickly; thus, problems can be solved in a timely manner according to the solutions listed in the
following tables.
Errors displayed in the flow meter are divided into two categories:
Table 1 is for errors displayed during self-diagnostics upon power on. “* F” may be displayed on the upper left
corner of the screen after entering the measuring mode. When this occurs, it is necessary to power on for
self-diagnostics once again to detect and solve possible errors using the table below. If a problem still exists, please
contact the factory or the factory’s local representative for assistance.
Table 2 applies when errors caused by incorrect settings and signals are detected and are announced by error codes
displayed in Menu M08.
7.1
Table 1. Self-diagnosis and Error Solutions (upon power on)
LCD Display
Cause
Solution
Rom Parity Error
System ROM illegal or error
Contact the factory
Stored Data Error
System stored data block error
Power on again or contact the factory
SCPU Fatal Error
SCPU circuit fatal error
Power on again or contact the factory
Timer Slow Error
Timer Fast Error
System clock error
Contact the factory
CPU or IRQ Error
CPU or IRQ problem
Power on again
System RAM Error
System RAM questionable
Power on again or contact the factory
Time or Bat Error
System date time chip error
Power on again or contact the factory
No Display, Erratic or Abnormal
Operation
Bad wiring connection
Check wiring connections
Stroke Key - No Response
Keypad locked or bad plug
connection
Enter the unlock password if the keypad is
locked
