# Trouble and abnormality shooting

## Trouble shooting <a href="#trouble-shooting" id="trouble-shooting"></a>

| Message or Symptom                                                                                                                                                                                                                            | Possible Cause                                                                                                                                                                | Solution                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Error of paddle wheel                                                                                                                                                                                                                         | <p></p><ol><li><br>Paddle damaged by foreign objects or external force</li><li>CommentShare feedback on the editorMagnet demagnetization caused by the environment.</li></ol> | <p></p><ol><li><strong>Stop the system operation.</strong></li><li><strong>Drain any residual liquid from the pipeline.</strong></li><li><strong>Remove the main unit</strong> from the installation.</li><li><strong>Detach the paddlewheel assembly</strong> and inspect the condition of the paddlewheel.</li><li>If the <strong>paddlewheel is missing or damaged</strong>, please contact your sales representative to <strong>purchase a replacement paddlewheel assembly</strong>.</li><li><p>If the <strong>paddlewheel appears intact</strong>, the issue may be due to <strong>demagnetisation caused by environmental factors</strong>. In this case, use the <strong>H05 function</strong> to <strong>recalibrate the paddlewheel</strong>.</p><ul><li>If the H05 function returns <strong>“Initialisation Error”</strong>, the paddlewheel is no longer functional and <strong>must be replaced</strong>.</li></ul></li><li><strong>Identify and eliminate the root cause</strong> of the paddlewheel failure (e.g. foreign matter, magnetic interference, or excessive wear).</li><li>After installing a new paddlewheel assembly, use the <strong>H05 function</strong> in the settings menu to <strong>initialise the new paddlewheel</strong>.</li></ol> |
| Magnetic field interruption                                                                                                                                                                                                                   | There is magnetic field interruption around the flowmeter.                                                                                                                    | <p>Please <strong>remove any equipment near the paddlewheel</strong> that may generate magnetic fields until the <strong>paddlewheel operation returns to normal</strong>.</p><p>If the source of interference <strong>cannot be eliminated</strong>, and <strong>flow data is confirmed to be accurate</strong>, you may proceed to <strong>disable the related alarm notification</strong>.</p>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| Analogue Current Signal Not Outputting                                                                                                                                                                                                        | Abnormal wiring                                                                                                                                                               | Please make sure that the 4-20mA loop provides power supply as well as the polarity of cable connection is correct or not.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|                                                                                                                                                                                                                                               | The function is not turned on                                                                                                                                                 | Please go to [parameter E06](https://docs.lorric.com/qr/fp-as310-paddle-wheel-flowmeter-manual-en-v1/parameters/e-category-options-and-descriptions) to turn on the function.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| Abnormal Analogue Current Output                                                                                                                                                                                                              | Outputted value needs to be fine tuned.                                                                                                                                       | Please adjust output current value by set-up parameter [E11 and E12](https://docs.lorric.com/qr/fp-as310-paddle-wheel-flowmeter-manual-en-v1/parameters/e-category-options-and-descriptions#e11-4ma-adj.-ua-4ma-output-adjustment-in-microamp-4ma-wei-diao-ua).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|                                                                                                                                                                                                                                               | Excessive Line and measuring impedance                                                                                                                                        | <ol><li>Please verify whether the impedance of the wiring or the input resistance of the controller's receiving end exceeds the allowable limit for proper operation.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| <br>If necessary, consider replacing the component with one that meets specification. </li><li>You may also increase the external supply voltage, as a higher supply voltage can raise the maximum allowable total line resistance.</li></ol> |                                                                                                                                                                               |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|                                                                                                                                                                                                                                               | Wrong set-up outputted parameter                                                                                                                                              | Please confirm the correction of set-up parameter [E06 E07 E08 E09 E11 E12 E13](https://docs.lorric.com/qr/fp-as310-paddle-wheel-flowmeter-manual-en-v1/parameters/e-category-options-and-descriptions)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| RS485 Unable to receive response.                                                                                                                                                                                                             | Communication Parameter Configuration Error                                                                                                                                   | Please confirm the correction of set-up parameter [E04 E05](https://docs.lorric.com/qr/fp-as310-paddle-wheel-flowmeter-manual-en-v1/parameters/e-category-options-and-descriptions)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|                                                                                                                                                                                                                                               | Address conflict                                                                                                                                                              | Please confirm that there is only one piece of equipment at a specified address                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| RS485 signal is unstable                                                                                                                                                                                                                      | Poor wiring                                                                                                                                                                   | Please refer to the [wiring instrucions](https://docs.lorric.com/qr/fp-as310-paddle-wheel-flowmeter-manual-en-v1/installation-and-setup/electronic-installation) to confirm the wiring is correct                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| Other abnormalities                                                                                                                                                                                                                           |                                                                                                                                                                               | <ol><li>Please use <strong>Parameter H06</strong> to <strong>restore factory default settings.</strong></li><li>Then, use <strong>Parameter H05</strong> to <strong>reinitialise the paddlewheel</strong>.</li></ol>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |

## **Abnormality shooting** <a href="#abnormality-shooting" id="abnormality-shooting"></a>

| Phenomenas                      | Possible Cause                                                     | Solution                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| ------------------------------- | ------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Flow volume is repeated as zero | Unable to keep rotating paddle wheel caused by too slow flow speed | <p></p><p>Please use the <strong>main screen</strong> to verify the <strong>current flow velocity</strong>.<br>If the velocity is <strong>below 0.3 m/s</strong> and the reading frequently returns to <strong>zero</strong>, there are two recommended solutions:</p><ol><li>If possible, <strong>slightly increase the flow velocity</strong> to bring it above the minimum measurable threshold.</li><li><p>If increasing flow is not feasible, <strong>enable Parameter A08</strong>.</p><ul><li>This function will <strong>reduce measurement responsiveness</strong>, but it will also <strong>minimise occurrences of zero readings</strong> at low flow rates.</li></ul></li></ol> |
|                                 | Foreign objects will cause Intermittent deceleration               | <p></p><ol><li><strong>Stop system operation.</strong></li><li><strong>Drain any remaining liquid</strong> from the pipeline.</li><li><strong>Remove the main unit</strong> from the system.</li><li><strong>Detach the paddlewheel assembly</strong> to inspect its condition, and <strong>remove any foreign objects</strong> if present.</li><li>If the <strong>paddlewheel is missing or damaged</strong>, please <strong>contact your sales representative</strong> to purchase a <strong>replacement paddlewheel assembly</strong>.</li><li><strong>Identify and eliminate the root cause</strong> of the paddlewheel malfunction to prevent recurrence.</li></ol>                   |
| Intermittent shutdown problem   | Unstable power supply                                              | Please confirm supply voltage and current is within the range.  [wiring instrucions](https://docs.lorric.com/qr/fp-as310-paddle-wheel-flowmeter-manual-en-v1/installation-and-setup/electronic-installation)                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |