DFM-6300 Series
Instruction Manual
29
TROUBLESHOOTING
Symptom
Check/Action
No display at all
Check power at power connector
Not able to change setup or
programming,
Locd
is displayed
Meter is password-protected, enter correct
six-digit password to unlock
Meter displays error message
during calibration (
Error
)
Check:
1.
Signal connections
2.
Minimum input span requirements
Meter displays
999999
-99999
Check:
1.
Input selected in
Setup
menu
2.
Corresponding signal at Signal
connector
Display is unstable
Check:
1.
Input signal stability and value
2.
Display scaling vs. input signal
Display reading is not accurate
Check:
Scaling or calibration
Display does not respond to input
changes, reading a fixed number
Check:
Display assignment, it might be displaying
max, min, or set point.
Display alternates between
1.
Hi
and a number
2.
Lo
and a number
Press Menu to exit max/min display
readings.
Relay operation is reversed
Check:
1.
Fail-safe in
Setup
menu
2.
Wiring of relay contacts
Relay and status LED do not
respond to signal
Check:
1.
Relay action in Setup menu
2.
Set and reset points
If the display locks up or the
meter does not respond at all
Cycle the power to reboot the
microprocessor.
Other symptoms not described
above
Call Technical Support for
assistance. Contact information is located
on the last page of this manual.