measurements when temperature or humidity comes back to an acceptable range. In
these circumstance, the code simply tells you something about measurements from
the time period.
Status codes are additive: if multiple codes are active, the displayed value is the sum
of the codes. For example, a display code of 17 indicates that cell temperature is out
of range (16), and flow out of range(1). If a measurement has an associated status
code, consider whether the measurement is valid or if the instrument should be ser-
viced.
Many other diagnostics can be addressed by servicing the LI-710. The following
examples show how you can interpret the code and respond to the issues.
l
A code of 32769 decodes to 32768 (high pump voltage) and 1 (flow out of
range), indicating a flow obstruction. Check the intake and exhaust for block-
ages. If there are no blockages, the pump might have failed and need to be
replaced.
l
A code of 17665 decodes to 16384 (low pump voltage), 1024 (cold temperature
shutdown, 256 (rain detected), and 1 (flow out of range). The code can be
triggered by an obstruction in the sonic path such as rain or soiling of a trans-
ducer (start by cleaning the transducers).
l
A code of 128 (poor sonic signal) or code 64 (no sonic) might indicate that the
sonic transducers are obstructed. This might be resolved by cleaning the trans-
ducers, or it might require additional investigation (start by cleaning the trans-
ducers).
If your are unable to resolve a code, contact LI-COR or your sales representative.
Section 8. Troubleshooting
8-3Addressing diagnostic codes
To Next Page
Loading...