19
PN957 (25-06-20)
TROUBLESHOOTING
Fault
Possible Causes
Solution
Over Current
Shorted output
Check for any shorts in motor cables.
Damaged wire insulation
Check motor wire insulation with a megger.
Missing Phase in 3-Phase motor
Ohm cable and motor to confirm balanced Ohms.
Entered wrong Service Factor Amps
Review motor perameters in main menu.
Over Voltage
Internal Pentair Pentek Intellidrive®
Constant Pressure Pump Controller short
With power to Intellidrive off, measure outputs with ohmmeter to detect
short.
Power cycling on and off
Check for a generator or switching on input line.
High line voltage
Measure incoming line voltage to Intellidrive; should be between 190V and
265V.
Under Voltage
Low line voltage
Temporary loss of power
Check for local power outage.
Excessive load current
Check motor is correctly sized for the application.
Loss of a motor phase
Check correct voltage is present on all motor leads.
Power was removed from Intellidrive
Check correct voltage is present on all input lines.
Cannot Start Motor
Exceeding Service Factor Amps
Check Service Factor Amps entered are correct.
Check pump and motor are correct.
No Service Factor Amps value entered
Check Service Factor Amps entered and are correct.
There is an open (connection) in motor wires
Check resistance of all motor wires is correct.
Locked rotor
Pull pump check for debris in pump.
Dry Run
Operation at open discharge
May need to reduce Dry Run Sensitivity pressure or apply back pressure
on transducer.
Intellidrive cannot read transducer signal
Check linearity of transducer, as it may be damaged.
Possible leak
Check for pipe break or large leak.
Dry running pump
Check water level in well.
Ground Fault
Ground wire shorted to motor phase
Check the ground wire for short to motor phase wire or check insulation
integrity with a megger.
Long motor cable length
Motor cable length more than 1000 ft is not recommended.
System Not Grounded
Ungrounded Intellidrive
Ground Detect parameter can be disabled, but will reactivate after 72
hours.
Unbalanced or three phase incoming voltage.
Line to line voltage must be twice line to ground voltage.
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.
Intellidrive 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
Check linearity of transducer.
Shorted Transducer
Short in transducer wires
Check for shorted transducer wire or damaged insulation.
Possible failed transducer
Check linearity of transducer.
