Xylem IM244R04 SPD Plus Variable Speed Pump Control User Manual

Page 23

SECTION 9: TROUBLESHOOTING

(CONTINUED)

The fault code on the control panel display is tempo-
rary. Pressing any of the following buttons removes
the fault message: MENU, ENTER, UP button, or
DOWN button. The message reappears after a few
seconds if the control panel is not touched and the
fault is still active.

FLASHING GREEN – ALARMS:
For less severe errors, called alarms, the diagnostic
display is advisory. For these situations, the drive
is simply reporting that it had detected something
“unusual.” In these situations, the drive:

• Flashes the green LED on the drive (does not

apply to alarms that arise from control panel
operation errors).

• Overrides the control panel display with the

display of an alarm code and/or name.

The alarm messages disappear from the control panel
display if/when any of the following are pressed on
the control panel: MENU, ENTER, UP button or DOWN
button. The message returns periodically as long as
the alarm condition exists.

CORRECTING FAULTS
The recommended corrective action for faults is:

• Use the "Fault Listing" table below to find and

address the root cause of the problem.

• Reset the drive by pressing RESET on keypad.
• NOTE: It may be necessary to remove and

reapply the Start Signal on DI1 to start the

drive after a fault is reset by pressing RESET

on the keypad.

• Turn the power off for 5 minutes then turn on.

Fault

Code

Fault Name In Panel

Description and Recommended Corrective Action

OVERCURRENT

Output current is excessive. Check for and correct:

• Excessive motor load, pump overload
• Insufficient acceleration time
• Faulty motor, motor cables or connections
• Bound pump or locked rotor

DC OVERVOLT

Intermediate circuit DC voltage is excessive. Check for and correct:

• Static or transient overvoltages in the power supply.
• Deceleration time is too fast
• Power wires routed too close to each other. Ensure at least 8" between

power wires and all other wiring.

DEV OVERTEMP

Controller heatsink is overheated. Temperature is at or above 115ºC (239ºF).
Check for and correct:

• Fan failure
• Obstructions in the air flow
• Dirt or dust coating on the heatsink
• Excessive ambient temperature
• Excessive motor load
• Ambient temperature
• Altitude

SHORT CIRC

Fault current. Check for and correct:

• A short-circuit in the motor cable(s) or motor.
• Supply disturbances

DC UNDERVOLT

Intermediate circuit DC voltage is not sufficient. Check for and correct:

• Missing phase in the input power supply.
• Blown fuse
• Undervoltage on mains

AI1 LOSS

Fault not enabled

FAULT LISTING