Xylem HV 1.1 - 1.2 - Manual (Page 55)

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15 Possible Error messages
15.1 Low Water
XXX
Error Water
Remedy:
Check incoming pressure
If incoming pressure is normal the unit restarts itself. If there is no external low water
protection (e.g. circulating systems), you have to bridge terminals X2/6 and X2/7.
15.2 Overheating – Motor
XXX
Error-Mot-Temp
Possible causes: insufficient cooling,
ambient temperature is too high or motor
overloaded. After the cause has been remedied, the malfunction has to be reset by
cutting off the power supply for >30 seconds.
15.3 Overvoltage
XXX
Error-Overvolt
Possible cause: Check mains supply, supply
voltage too high, peak voltage owing to
switch heavy loads on the network, or RAMP 2 is to fast! Find the cause and take
countermeasures (e.g. network filter, RC-elements). Disconnect the power supply for
> 30 seconds (acknowledgement).
15.4 Undervoltage
XXX
Error-Undervolt
Possible cause: Check mains supply, faulty
fuse or phase Unsymmetry.
Disconnect the power supply for > 30 seconds (acknowledgement).
15.5 Overload
XXX
Error Overload
Possible causes: false data settings or the
pump is working at a capacity significantly in
excess of its performance data.
Ramp 1 to fast: (see chapter 13.6.3)
Max. frequency to high: (see chapter 13.5.1)
Boost to low: (see chapter 13.5.3)
Disconnect the power supply for > 30 seconds (acknowledgement).