WHISPERFLOXF
®
VS and MAX-E-PROXF
®
VS Commercial Variable Speed Pump Installation and User’s Guide
22
Faults and Alarms
If an alarm is triggered the drive’s LCD screen will display the fault code text and the pump will stop. Disconnect
power to the pump and wait until the keypad LEDs have all turned o. At this point, reconnect power to the pump. If
the error has not cleared then proper troubleshooting will be required. Use the error description table below to begin
troubleshooting.
0021 – Communication Link between the HMI and Motor control has been lost: Check the jacketed wire on the
back side of the keypad inside the drive top cover. Ensure that the 5 pin connector is properly plugged into the socket
and that there is no damage to the cable.
0017 – Power Module over current detected: If this error displays multiple times, then there may be a problem
with the pump’s rotating assembly. Please disassemble the pump and investigate to see if there is a problem with the
impeller or shaft seal. See Pump Disassembly on page 17 for instructions for disassembling the pump.
000E – Absolute AC Under Voltage Detected: Indicates that the supply voltage has dropped below the operating
range of 187v. This could be caused by normal voltage variation and will clear itself. Otherwise there could be
excess voltage sag caused by improper installation or improper supply voltage.
FAULT CODE DESCRIPTION
000A Absolute L4 inductor temperature limit exceeded
000B DC bus over voltage detected
000C DC bus under voltage detected
000D Absolute AC line over voltage detected
000E Absolute AC line under voltage detected
000F Internal voltage ref out of range
001A Input bypass relay fault detected
0002 Absolute phase current limit exceeded
0004 Absolute Power Module temperature limit exceeded
0006 Absolute Power Factor Correction (PFC) temperature limit exceeded
0008 Absolute Diode Bridge temperature limit exceeded
0010 External voltage ref out of range
0011 Module therm out of range
0012 PFC therm out of range
0013 Bridge therm out of range
0014 L4 Inductor therm out of range
0015 Current oset out of range
0016 Motor start fault detected
0017 Power module over current detected
0018 3 phase current imbalance detected
0019 Module fault test failure
0021 Communication link between HMI and motor control has been lost
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