*For additional Troubleshooting information, please visit www.sta-rite.com/resources/images/16455.pdf for
a downloadable guide.
Troubleshooting 20
Fault Possible Causes Solution
Open Transducer
Intermittent connection
Check all transducer wires are securely
connected or for damaged cable insulation.
Open Connection
Check for proper wiring of all transducer
wires and verify cable connector securely
attached to transducer.
Drive cannot read transducer
signal
Check electrical system for ground loops or
no ground connection.
Transducer wires crossed
Check red is in AI+ and black is in AI-.
Possible failed transducer
Checklinearityoftransducer;see
Troubleshooting Guide for more information.
Shorted Transducer
Short in transducer wires
Check for shorted transducer wire or
damaged insulation.
Possible failed transducer
Checklinearityoftransducer;see
Troubleshooting Guide for more information.
Over Temperature Excessive heating in drive
Check ambient temperature is not above
50°C (122°F).
Check for inoperable or unobstructed fan.
Check vents are not obstructed.
Excessive Runtime
Leak detected Check for leaks in pipe system.
Application calls for long run
times
Extend Excessive Runtime Hours limitation.
Disable Excessive Runtime Fault.
Internal Fault
Internal voltages are out of
range
Drive will auto reset and attempt to clear
fault. Fault Reset can be pressed to clear
fault as well. Then try to operate pump. If
fault continues Drive may need replacement.
Hardware Fault Internal hardware failure
Fault Reset can be pressed to clear fault.
Then try to operate pump. If fault continues
Drive may need replacement.
External Fault
The external device detected
fault condition and closed the
I1 or I2 input
Check external device.
Low Amps
Under-sized pump
Increase Minimum Speed to 35 Hz.
Low current draw from pump
Thermal protector open in
1-phase motor
Wait 20 minutes then restart pump.
Missingmotorphase Check all motor connections at the Drive.
Troubleshooting, continued
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