Vexve AM20-W Betriebsanleitung Seite 25

Trouble codes and required actions
Faulty supply water sensor
· Go to the user menu and check temperature T1.
· If the temperature is higher than +99.9 ºC, there is no connection between the sensor and the motor
unit.
- broken wire or disconnected connector -> check
- if no mechanical fault is found, supply water sensor T1 must be replaced
· If the supply water temperature is below zero (–01.4 ºC),
there is a short-circuit in the sensor circuit.
- short-circuit in the wire -> check the wire
- if no mechanical fault is found, supply water sensor T1 must be replaced
Antenna Unit faulty
· Take the room unit to the motor unit.
· Check that the antenna unit is connected and that the wire is intact.
· Switch off the supply current to the motor unit for a moment and then remove one of the room unit
batteries for a while.
· Then power up the devices again – if they function normally, press the commissioning button D on
the room unit with the tip of a pen, select RF, and take the room unit back to its location.
· Give the device a moment to calculate the mean value for the success of radio communications; if
the figure is less than 30%, move the room unit to see if you can find better reception nearby.
· The location of the motor unit antenna essentially affects the radio communications range – always
place the antenna as high as possible.
Internal fault in device electronics
Contact a Vexve Controls distributor, who will take the device for factory maintenance and provide a
replacement if necessary.
Battery charge is low (1/3 remaining).
· Replace the AA alkaline batteries in the room unit. The room unit has a memory that saves the
device settings even when the batteries are replaced.
- Use only good-quality alkaline batteries.
· When the battery charge is low, the backlight does not come on and the display is blank when the
device is not being used.
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