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Won't Start

Kärcher Pressure Washer

Severity: Critical

Source: OnlyErrorCodes.com — Every error code. One place.

Karcher Pressure Washer Won't Start — Fix Guide

What Does This Error Mean?

A Karcher that won't start is usually a tripped thermal cutout, a faulty extension lead, or a GFCI socket that has tripped. Reset the thermal cutout and check the power supply first.

How to Fix It

  1. Check the power outlet

  2. Check the extension lead

  3. Reset the thermal cutout

  4. Check the on/off switch

  5. Check the trigger safety

  6. Check the water supply

Frequently Asked Questions

Why does my Karcher pressure washer trip the circuit breaker?

Karcher motors draw a high starting current. A circuit shared with other appliances, a long extension lead, or a weak GFCI socket can trip under this initial load. Use a dedicated outdoor socket if possible.

My Karcher makes a click but won't run — what does that mean?

A click without the motor running usually means the thermal cutout has tripped or there is insufficient voltage at the motor. Let it cool and check the extension lead.

How long should a Karcher run between breaks?

Karcher recommends avoiding continuous running with the trigger held for more than 5 minutes without a pause. The machine is designed for intermittent use.