Troubleshooting

Troubleshooting

Note: Any repairs suggested below should be completed by an authorized service technician.

Trouble

 

Probable Cause

 

Correction

 

 

 

 

 

Motor does not run

1.

Blown fuse.

1.

Replace fuse.

when power switch

2.

Switch is burned out.

2.

Replace the Switch.

is pressed on.

3.

Connection wire is

3.

Tighten or replace

 

 

loose or damaged.

 

the wire.

 

 

 

 

 

Motor does not run

1.

Power voltage is too low.

1.

Test voltage.

at full speed.

2.

Motor is damaged.

2.

Check and repair motor.

 

 

 

 

 

Motor will not reach

1.

Incorrect power wiring.

1.

Have the unit rewired

full power.

2.

Overload.

 

professionally.

 

2.

Reduce load by clean-

 

 

 

 

ing filters as necessary.

 

 

 

 

 

Motor overheats.

1.

Using wrong voltage.

1.

Verify that the outlet is

 

 

 

 

115 VAC.

 

2.

Motor is damaged.

2.

Check and repair the

 

 

 

 

motor.

 

 

 

 

 

Insufficient suction

1.

Inlet port blocked.

1.

Clean inlet port.

power.

2.

3-Pocket Type Filter is

2.

Empty 3-Pocket Type

 

 

full.

 

Filter.

 

3.

Outlet port blocked.

3.

Clean the outlet port or

 

 

 

 

adjust the direction of

 

 

 

 

the outlet.

 

 

 

 

 

Unit is shaking.

1.

The unit isn’t properly

1.

Mount the unit firmly.

 

 

anchored.

 

 

 

2.

The unit isn’t level.

2.

Level the unit.

 

3.

Worn or damaged

3.

Repair or replace

 

 

power cord.

 

power cord.

 

 

 

 

 

SKU 91393

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Harbor Freight Tools 91393 manual Troubleshooting