--- title: The flow meter provides error codes description: What do I have to do when I experience this problem? --- [Skip to content](https://support.sensorfact.eu/knowledge/the-bfu-provides-error-codes-or-the-quality-is-not-sufficient#main-content) - [English](https://support.sensorfact.eu/knowledge/the-bfu-provides-error-codes-or-the-quality-is-not-sufficient) - [Deutsch](https://support.sensorfact.eu/de/knowledge/der-durchflussmesser-gibt-fehlercodes-aus) - [Español](https://support.sensorfact.eu/es/knowledge/el-caudalímetro-proporciona-códigos-de-error) - [Français](https://support.sensorfact.eu/fr/knowledge/le-débitmètre-fournit-des-codes-derreur) - [Italiano](https://support.sensorfact.eu/it/knowledge/il-flussometro-fornisce-codici-di-errore) - [Nederlands](https://support.sensorfact.eu/nl/knowledge/de-debietmeter-geeft-foutcodes) - [Polski](https://support.sensorfact.eu/pl/knowledge/przepływomierz-podaje-kody-błędów) English Show submenu for translations ![sensorfact\_new\_logo](https://support.sensorfact.eu/hubfs/00.%20Archive/sensorfact_new_logo.svg) Open main navigation Close main navigation - - [English](https://support.sensorfact.eu/knowledge/the-bfu-provides-error-codes-or-the-quality-is-not-sufficient) - [Deutsch](https://support.sensorfact.eu/de/knowledge/der-durchflussmesser-gibt-fehlercodes-aus) - [Español](https://support.sensorfact.eu/es/knowledge/el-caudalímetro-proporciona-códigos-de-error) - [Français](https://support.sensorfact.eu/fr/knowledge/le-débitmètre-fournit-des-codes-derreur) - [Italiano](https://support.sensorfact.eu/it/knowledge/il-flussometro-fornisce-codici-di-errore) - [Nederlands](https://support.sensorfact.eu/nl/knowledge/de-debietmeter-geeft-foutcodes) - [Polski](https://support.sensorfact.eu/pl/knowledge/przepływomierz-podaje-kody-błędów) English Show submenu for translations - [Go to Best Practices Hub](https://support.sensorfact.eu/resource-hub) [Go to Best Practices Hub](https://support.sensorfact.eu/resource-hub?hsLang=en) What are you looking for? - There are no suggestions because the search field is empty. 1. 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When M01 is open, you should see an \*R: ![](https://lh7-us.googleusercontent.com/WjL6v8-Ap7EWTxpjrf_nSFuiBqEmIGwifb2lKrijbBDm7jEIdb75HdzQ6RdV57NN2y4OfqLfFDoTcygo8REduAZT_zji5lzLkCqOmjDXzKLY9uPcwCSIL5eA-ZKig9XLo4SxTPMhOrwBwfRqXJsFBs8) If a different letter is displayed, an error may be happening.  | **Error code** | **Corresponding message in M08** | **Causes** | **Solutions** | | --- | --- | --- | --- | | R | System normal | No error | | | I | Detect No Signal | (1)No Signals detected (2)Transducers installed improperly (3)Too much fouling (4)Pipe liners are too thick.  (5)Transducer cords are not properly connected. | (1)Relocate measuring location (2)Clean the spot (3)Check the cords | | J | Hardware Error | Hardware problem | Contact Sensorfact | | H | PoorSig Detected | (1)Poor signal detected (2)Transducers installed improperly (3)Too much fouling (4)The pipe liners are too thick.  (5)Problem with transducers cords | (1)Relocate measuring place (2)Clean the spot (3)Check the cords (4)Check the coupler | | Q | Frequ Output Over | The actual frequency for the Frequency Output is out of the range set by the user | Check the value entered at M66, M67,M68 and M69, and try to enter a larger value on M69 | | F | System RAM Error  Date Time Error  CPU or IRQ Error  ROM Parity Error | (1) Temporary problems with RAM, RTC (2) Permanent problems with hardware | (1) power on again (2) contact Sensorfact | | G | Adjusting Gain | Not an error. The instrument is in the progress of adjusting the gain for the signal, and the number indicates the progressive steps. | | | K | Empty pipe | No liquid inside pipe Setup error on M29 | Relocate where the pipe is full of liquid. Enter 0 on M29. | When you experience this problem, please follow the steps below: 1. Ensure sufficient couplant is applied to the pipe; 2. Ensure the surface of the pipe was extensively cleansed and greased before applying the transducers; 3. Ensure the transducers are connected relatively tight to the pipe and are spaced correctly: e.g. according to M25 on the flow meter; 4. Check the connection of the flow meter cables to the device; 5. Check whether the device is installed in one of the following ways: 1. vertically in a pipe with a water stream upwards and the transducers are placed facing each other; 2. In a horizontal pipe, on the side, not top or bottom of the pipe. If signal quality is bad, you can move the transducers on the pipe, 45 degrees **down** from the horizontal; 6. If possible, check whether the actual water flow is happening. 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