FAQ
An "Alarm" LED is flashing on my measuring and control device, and/or the display "Sample water alarm" or "Sample water error", the dosing is interrupted.
- The sample water monitoring in the flow valve has responded.

An "Alarm" LED lights on my measuring and control device.
- The set (or factory preset) threshold value is exceeded or fallen below

Display and LEDs do not work in my control device.
- The device has no operating voltage
- The fuse has blown
- The power supply unit is defective.

The LEDs do not work, but the display is okay.
- Internal error, microprocessor probably turned off.

The display does not work in my controller, but the LEDs light or flash.
- Loose or insufficient connection in the device
- Incorrect contrast setting
- Electronics error


