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Troubleshooting
Problem
Check
Motor will not start but fuses do not blow.
Troubleshooting
switch.
Cable or splices bad.
Control box incorrectly wired.
Fuses blow or overload protector trips when motor starts.
Wrong size fuse or
Check fuse size against Fuse Size
wrong size time delay
tables.
fuse.
Check wire size against Cable Sizing
Wire size too small.
tables.
Starting capacitor
Check control box to see if starting
defective or blown.
capacitor has blown out.
Check that line voltage is within
Low or high voltage.
while motor is running.
Check control box wiring diagram
Cable leads not
against incoming power hookup.
correctly connected to
control box.
Check drop cable color coding.
Broken wire in control
Examine all connections and wiring in
box.
control box.
Pump or motor stuck or
Check for locked rotor in pump.
binding.
Fuses blow or overload protector trips when motor is running.
Check that line voltage is within
Low or high voltage.
while motor is running.
High ambient
(atmospheric
Check temperature of control box.
temperature).
Compare voltage and horsepower on
Control box with wrong
motor nameplate with those given on
voltage or horsepower
control box nameplate or on circuit
rating.
diagram inside control box cover.
Check wire size against Cable Sizing
Wire size too small.
tables.
Cable splices or motor
Consult licensed electrician or
leads grounded,
shorted, or open.
Corrective Action
Consult power supplier, check generator.
Check connections, rewire from fuse box
to control box.
Check connections, replace control box,
rewire from control box to pressure switch.
Check connections, replace pressure
switch.
Consult serviceman or licensed electrician.
Reconnect control box correctly (see
Diagrams).
Replace starting capacitor.
call power company to adjust voltage.
Reconnect leads to match wiring diagram
in control box cover.
Reconnect drop cable so cable color code
matches motor lead color code.
Disconnect power and repair or replace
faulty wire.
locked, replace it. Clean well of all sand or
lime before reinstalling pump.
power company to adjust voltage.
Do not mount control box in direct
sunlight.
Replace control box if numbers do not
match.
Do not attempt to disassemble pump or
motor.
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