Troubleshooting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Problem

 

 

Possible Causes

 

Likely Solutions

Motor will not

1.

Cord not connected.

1.

Check that cord is plugged in.

 

start.

2.

 

No power at outlet.

2.

Check power at outlet. If outlet is unpowered, turn off

 

 

 

 

 

tool and check circuit breaker. If breaker is tripped,

 

 

 

 

 

make sure circuit is right capacity for tool and circuit

 

 

 

 

 

has no other loads.

 

3.

 

Fuse is blown or breaker tripped.

3.

Have fuse replaced by a qualified service technician.

 

4.

 

Internal damage or wear. (Carbon

4.

Have serviced by a qualified service technician.

 

 

 

brushes or switch, for example.)

 

 

 

Motor runs

1.

 

Improper priming.

1.

Re-prime according to directions.

 

but water isn’t

2.

 

Clogged filter at end of intake

2.

Clean filter.

pumping.

 

 

connections.

 

 

 

 

3.

 

Discharge valve closed.

3.

Open discharge valve.

 

4.

 

Pipe size too small.

4.

Re-pipe using pipe of the same size as the Pump

 

 

 

 

 

inlet and outlet ports.

 

5.

 

Impeller plugged.

5.

Have Impeller cleaned by qualified service technician.

 

6.

 

Pipes frozen.

6.

Thaw pipes. Check for damage before using pump.

Pump does not

1.

Corroded pipes.

1.

Replace pipes.

 

deliver water at

2.

Piping size too small.

2.

Re-pipe using pipe of the same size as the Pump

full capacity.

 

 

 

 

inlet and outlet ports.

 

3.

 

Not enough water supplied to Pump.

3.

Enlarge inlet pipe. Check well pump system.

 

4.

 

Low Voltage.

4.

Check that outlet is 120V.

Excessive noise

Internal damage or wear. (Carbon

Have technician service tool.

 

or rattling.

brushes or bearings, for example.)

 

 

 

Follow all safety precautions whenever diagnosing or servicing the tool. Disconnect power supply before service.

Wiring Diagram

1

POWER CABLE

2

PRRESSURE SWITCH

3

TERMINAL

4

CAPACITOR

5

MOTOR

Page 6

For technical questions, please call 1-800-444-3353.

SKU 68421

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Harbor Freight Tools 6842 manual Troubleshooting, Problem Possible Causes Likely Solutions, Wiring Diagram
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6842 specifications

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