Xylem 19 001 251 R3 Floboy VFD Pumping System - Manual (Page 35)

31
Fault code 2 – DC overvolt (intermediate circuit
DC voltage is excessive). To be performed by a qualified person only.
Check the input voltage (AC) to the drive. If high, contact
the power company.
Fault code 6 – DC undervolt (intermediate circuit
DC voltage is insufficient). To be performed by a qualified person only.
Check the input voltage (AC) to the drive. If low, contact
the power company.
Fault code 7 – AI1 loss (analog 1 input value is
less than minimum value). This can be a nuisance fault. Set parameter 3001 = 0 not
sel.
Fault code 9 – motor overtemp (motor too hot,
estimated value). This can be a nuisance fault. Set parameter 3006 =
1050, and 3007 = 115.
Fault code 22 – supply phase (ripple voltage in
the DC link is too high). To be performed by a qualified person only.
Check the input fuses to the VFD. Review the phase
failure section above.
MOTOR WON’T START
Cause Cure
Pump Fault is indicated on Controller display To be performed by a qualified person only.
The overload for that motor is tripped. Reset, adjust, or
replace as required.
Does the station have a high pump temperature option?
Check if the water temperature is greater than 120°F. If it
is, the pump is cavitating. If less than 120°F, the probe or
relay is bad.
To be performed by a qualified person only.
Does the station have the individual pump phase fault
option? See if the phase or voltage to motor is good.
Check the motor fuses. Replace that pump's phase
monitor as required.