Karcher HD 7/250 DE TR1 - Manual (Page 17)

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