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Maintenance, Troubleshooting
Type 8710, 8711, 8713, 8715
9.3. Troubleshooting
Problem Possible cause Recommended action
The Power LED is off No power supply. Check the electrical connections.
The Power LED flashes
Power / Autotune
Communication
Error
The Autotune function is in progress. See chap. 8.3.
The Power LED goes out
periodically
The Power supply cuts out periodically; the device
implements a reset.
Use a power supply with adequate power.
The voltage drop in the connection cable is too high. Increase the cable cross section.
Reduce the cable length.
The Limit (y) LED comes
on
Power / Autotune
Limit (y)
Error
MFC: the solenoid valve adjustment has almost reached
100%. The set-point value has not been obtained.
Increase the operating pressure (observe the maximum
permitted supply pressure).
Check the cable resistance and reduce if required.
Check the system dimensions.
Check the filters installed in the line and clean if
required.
MFM: the measured flow-rate has almost reached or
exceeded the nominal flow-rate.
Reduce the flow-rate.
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