Karcher HD 7/250 DE TR1 manual Malfunction Water in fuel

Display/meaning	Cause	Remedy	By whom
	Cable plug of high pressure sensor loose or	Check for correct fit	Operator
	short in connection
	Cable breakage	Replace the cable	Customer Service
>Malfunction<	High pressure sensor defective	Check / replace the sensor	Customer Service
High pressure sen-
sor
	The permitted max. pressure is exceeded due	Check the nozzle size, install correct noz-	Operator
	to small or plugged nozzle	zle
	Load speed too high	Reduce load speed	Customer Service
>Malfunction<
High pressureHoch-
druck > max.
	The pressure decrease is too slow after the le-	Check the switch valve	Customer Service
	ver of the hand spray gun is released
	Cable breakage	Replace the cable	Customer Service
>Malfunction<	High pressure valve defective	Check the high pressure valve	Customer Service
	High pressure sensor defective	Check / replace the sensor	Customer Service
High pressure de-
crease too slow
	Water tank empty. Inlet valve to water tank	Check the inlet valve to the water tank	Operator
	closed (by customer)
	Cross section of water supply hose too small	Use a water supply hose with a larger	Operator
>Malfunction<		cross section
	Level switch defective	Replace the level switch	Customer Service
Water level
	Cable breakage	Replace the cable	Customer Service
	Water reservoir empty	Filling the Water Reservoir	Operator
	Water filter contaminated	Clean water filter	Operator
	Backflow valve on the advance pump contami-	Check backflow valve	Customer Service
>Malfunction<	nated
	Pressure switch is defective	Check/replace the pressure switch	Customer Service
Water inlet pressure
	Cable breakage	Replace the cable	Customer Service
below 0.15 MPa (1.5
bar)	Advance pump defective	Check / replace the prepressure pump	Customer Service
	Advance pump drive defective	Check/replace the main switch	Customer Service
	Remote control not connected	Create connection	Operator
	Plug wet	Dry the plug	Operator
	Plug defective	Replace the plug	Customer Service
>Malfunction<	Switch in the hand spray gun defective	Check the switch, replace	Customer Service
	Cable breakage or short in the control line	Check the cable, replace	Customer Service
Remote control
	See motor operating instructions
	Evaluation unit defective	Replace evaluation unit	Customer Service
	Cable breakage	Replace the cable	Customer Service
>Malfunction<
EMR fault
	Oil temperature too high	Check the oil temperature	Operator
	Temperature sensor defective	Replace the temperature sensor	Customer Service
	Cable breakage	Replace the cable	Customer Service

>Malfunction< Compressor temper- ature

See motor operating instructions
Water in fuel	Replace the fuel	Operator
Cable breakage	Replace the cable	Customer Service
>Malfunction<
Water in fuel

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