Vaisala FD12P - Manual (Page 137)

Chapter 7 ____________________________________________________________ Troubleshooting
VAISALA _______________________________________________________________________ 137
3. If everything else seems to be functioning correctly, change the
parameter settings as follows:
- If possible, check the accumulated water sum against a
reference rain gauge This will indicate how close Rain
intensity scale is to the optimal value. Decrease the scaling
factor if the FD12P rain amount is too high.
- Otherwise, increase DRD scale.
Have Jumper Settings Been
Changed?
If you have reason to believe that the original jumper settings have
been changed, see Appendix B on page 147.
Values for Internal Monitoring
The typical values are according to factory testing and are allowed to
be changed within the given minimum/maximum limits. For example,
the LEDI value is dependent on ambient temperature of more than
+25 °C and aging of the IR-LED.
The fault limits give hints for troubleshooting.
The values for internal monitoring are listed in Table 29 on page 138.