21
Errors and Alarms
If an alarm is triggered the drive's LCD screen will display the fault code text and the VS2 Variable Speed Pump will stop
running. Disconnect power to the pump and wait until the keypad LEDs have all turned off. 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.
Fault Code
21
– 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.
1A
– 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
mechanical seal. See page 14 "Pump Disassembly" for instructions for disassembling the pump.
OF
– Absolute AC Under Voltage Detected: This indicates that the supply voltage has dropped below the operating range
of 99v. 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.
17, 1b, 02, 08, 04, 06, 09, 0A
60730 required self-diagnostic safety software. If they do not clear after multiple restart attempts the drive should undergo
a hard power cycle. Disconnect main power by turning off the breaker long enough for the keypad LEDs to turn off. After
power is reconnected if one of these errors continues to reappear, the drive may need service.
Pump Specifications
Overall Ratings
Input Voltage
Input Current
Input Frequency
Control Terminals
Maximum Continuous Load
Speed Range
Environmental Rating
Ambient Conditions
Storage
Operating
Humidity
Communication link between HMI and motor control has been lost
Power Module over current detected
Phase Current Offset out of range
Phase Current Imbalance detected
Absolute AC under voltage detected
Absolute Phase current limit exceeded
Absolute Diode Bridge temperature limit exceeded
Absolute Power Module temperature limit exceeded
Absolute Power Factor Correction (PFC) temperature limit exceeded
DC bus over voltage detected
DC bus under voltage detected
– Internal Errors: These errors can occur based on operating conditions and the UL
115-230 Vrms nominal
13.2/12.0-11.5 A
Single phase, 50 or 60 Hz
18-30V AC (24V AC+/- 20%) or
9-30V DC (12/24V DC +/- 20%)
2.0 THP (Total Horse Power)
300 - 3450 RPM
NEMA Type 3
-40ºC to +85ºC (-40ºF to +185°)
0ºC to +50ºC (+32°F to +122°F)
Relative 0 to 95 % non-condensing
Description