Seed or fertilizer sensor clogged, light-struck or broken
What to do when an optical seed or fertilizer sensor reports a blocked channel, too much light, a fault of its own, or outdated firmware.
The seed and dry fertilizer sensors count the product optically: an emitter shines across the channel, a receiver sees each grain. These alarms report the state of the sensor itself, not the rate. How the window works: How alarms work.
“Clogged”
What it means. The seed or dry fertilizer sensor has detected that its optical channel is blocked.
What to do, in this order:
- Remove the blockage.
- Check for a build-up of dust in the channel.
- Check the power supply of the sensor. It must meet the values in the device passport.
“Light struck”
What it means. The seed or fertilizer sensor has detected an extremely high level of light in its optical channel.
What to do: keep direct sunlight out of the optical channel of the sensor.
“Broken”
What it means. The seed or dry fertilizer sensor has detected a fault of its own. It may have to be replaced. Its status screen shows “Faulty”.
What to do: check the power supply of the sensor. It must meet the values in the device passport. If the power supply is in order, the sensor may have to be replaced — call the service support.
“Old firmware! Wrong S&D calc!”
What it means. A dry fertilizer sensor with outdated firmware is in use while the fertilizers are in the “Precise” mode. It counts, but its skips and doubles cannot be trusted.
What to do: call the service support to have the firmware of the sensor updated — or set “Mode of fertilizers” to “Flow” or “Hybrid” (Seeding machine parameters).
Something your machine does that this page does not answer? Write to support@agriwelt.com — an engineer answers.