TROUBLESHOOTING

Disconnect￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿the machine from the power source before making any repair.

 

Cause

Solution

 

 

 

 

On/Off switch is in the “OFF”

Turn switch to the “ON”

 

position.

position.

 

 

 

 

Power cord is not plugged in.

Plug in power cord.

 

 

 

 

Extension cord is too long.

Replace extension cord with

 

Extension cord is not proper gauge.

either a 25 ft. 12/2 gauge cord

 

Extension cord is damaged.

or a 50 ft. 10/2 gauge cord.

 

 

 

 

Electrical outlet does not supply

Try a different outlet.

 

adequate power.

 

 

 

 

￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿

Diameter of garden hose is too

Replace with a 1/2 inch or 5/8

small.

inch garden hose.

￿￿￿￿￿￿￿￿￿￿￿

 

 

Water supply is restricted.

Check garden hose for kinks,

 

leaks and blockage.

 

 

Not enough inlet water supply.

Open water source full force.

 

 

Water inlet filter is clogged.

Remove filter and rinse out in

 

warm water.

 

 

Triple nozzle is in low pressure

Turn triple nozzle to high pressure

position.

position.

 

 

￿￿￿￿￿￿￿￿￿￿￿￿

Not enough inlet water supply.

Turn water on full force. Check

 

garden hose for kinks, leaks or

 

 

blockage.

 

 

 

 

Pump is sucking air.

Check that hoses and fittings are

 

 

air tight. Turn off machine and

 

 

purge pump by squeezing trigger

 

 

gun until a steady flow of water

 

 

emerges through the nozzle.

 

 

 

 

Water inlet filter is clogged.

Remove filter and rinse out in

 

 

warm water.

 

 

 

 

Discharge nozzle is obstructed.

Blow out or remove debris with a

 

 

fine needle.

 

 

 

 

Calcified gun, hose or power

Run distilled vinegar through

 

nozzle.

detergent tank.

 

 

 

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Karcher HD 425 specifications Troubleshooting