The LED´s at the actuator located in the front of the FSK101 communicates working status and errors.

A constant LED light indicates working positions of the valve:

• Green LED: the valve has an opening of 0%
• Green & Blue LED: the valve has an opening of 1 up to 40%
• Blue LED: the valve has an opening of 40 up to 60%
• Blue & Red LED: the valve has an opening of 60 up to 99%
• Red LED: the valve has an opening of 100%

Flashing in a frequency of 0,25s means ERROR. The error could mean that the valve does not react to the control signal and is stuck in one position. Following steps can be taken:

• Reset: Disconnect / connect the power supply of the Fresh Hydro Unit. The valve moves during startup of the FSK101.
• Cleaning: Dismount the valve from the FSK101. Clean the cone if necessary. During re-mounting of valve, use silicon grease.
• Contact customer service.

• Green LED: FSK is ready for use
• Red LED: ERROR - please press the Service button for 2 seconds to get further information’s
• Green LED is flashing: The FSK101 is used in manual mode. The primary pump is running with 50% speed, and the valve is in 50% position.
• LED is flashing Green and Red: Legionella flushing is active

The Fresh Hydro Unit has an active lime protection. It works in two ways:

• Hardware design: The construction of the plate heat exchanger allows a big energy transfer with low temperature level.
• Software: The controller secures that whenever it is possible, the flow temperature in the primary side is limited below 60°C. (This depends of the drinking water flow and desired temperature).

You get enlarged fallout of lime at temperatures above 60°C. To minimize the risk, set a tap temperature at a lower level (in every case lower than 55°C).