SYR STS 5, User Manual, Page: 10 / 16

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1.6 Troubleshooting
Proceed as follows:
1. Disconnect the device from the power supply (unplug).
2. Eliminate the defect, cf. possible malfunctions under ”What to do, if” .
3. Re-insert the plug into the appropriate socket.
- The plug must be readily accessible and not be covered!
4. Set the desired operating state.
What to do, if....
water leaks from the DN 50 drain pipe?
The floating unit of the float valve rubs against the tank wall.
Place the float valve in the center: correctly insert the float valve in the bracket. Additional settings
are not required. Make sure that the reinforced hose is mounted without stresses!
The float valve has become dirty during the pipe installation.
Set the control element of the device to ”Manual“.
Open a point of use and let the pump run about one minute to flush the valve and remove dirt.
Then, reset the control element to the desired operating state.
The float valve is prematurely covered with limescale due to the hardness degree of the potable
water.
Check the float valve’s function as described in chapter 1.5 “Maintenance”.
In case of premature wear, replace the float valve.
the pressure gauge displays 0 bar and the LED ”Error” on the flow guard lights up?
The pump has run dry.
Verify the float valve and its feed-in capacity. Check any shut-off valves possibly mounted in the
supply pipe. Then, restart the installation, cf. instructions for installation, chapter 2.1.