TROUBLESHOOTING

PROBLEM

CAUSE

SOLUTION

Compressor will not run

Loss of power or overheating

Check for proper use of extension

 

 

cord

 

No electrical power

Check to be sure unit is plugged in

 

 

Check fuse/breaker

 

Blown shop/house fuse

Replace shop/house blown fuse

 

Shop/house breaker open

Reset shop/house breaker, determining

 

 

why problem happened

 

Thermal overload open

Motor will restart when cool

 

Pressure switch bad

Replace pressure switch

 

Tank is full of air

Compressor will turn on when tank

 

 

pressure drops to cut-in pressure

 

 

 

Motor hums but cannot run or runs

Low voltage

Check with voltmeter

slowly

Wrong gauge wire or length of exten-

Check for proper gauge wire and cord

 

 

sion cord

length

 

Shorted or open motor winding

Take compressor to service center

 

Defective check valve or unloader

Take compressor to service center

 

 

 

Fuses blow/circuit breaker trips

Incorrect size fuse, circuit overload

Check for proper fuse, use time-delay

repeatedly

 

fuse, disconnect other electrical appli-

 

 

ances from circuit or operate compres-

 

 

sor on its own branch circuit

 

Wrong gauge wire or length of exten-

Check for proper gauge wire and cord

 

sion cord

length

 

Defective check valve or under loader

Take compressor to service center

 

 

 

Thermal overload protector cuts out

Low voltage

Check with voltmeter

repeatedly

Lack of proper ventilation/room tem-

Move compressor to well-ventilated

 

 

perature too high

area

 

Wrong gauge wire or length of exten-

Check for proper gauge wire and cord

 

sion cord

length

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RIDGID OL50135W manual Troubleshooting, Problem Cause Solution