Karcher HD 6000 C, HD 4000 C operating instructions English Problem Possible cause Remedy By whom

HD 4000 C / HD 6000 C

F. Trouble Shooting

English

Problem	Possible cause	Remedy	by whom
	Insufficient water in	Check site water supply	Operator
	float tank
General fault and
“Water supply fault”
LED light up on
printed circuit board	Temperature of the water	Reduce inlet temperature	Operator
	inlet too high
	Cooling water quantity too
	low:
General fault and	Strainer in pressure reduction	Clean strainer	Operator
“HD pump
	valve contaminated
temperature fault”
LED light up on	Mains water pressure too low	Raise pressure	Operator
printed circuit board	Cooling coil calcified,	Decalcify,	Operator
	solenoid valve defective	replace solenoid valve
	Oil level too low	Check oil level	Customer
			Service
	Oil change not made, owing	Check pump parts,	Customer
	to which there is oil carbon	replace as necessary.	Service
	under the piston guide shoes,	Make an oil change
	piston seizing.
	Rotation direction of	Change rotation direction	Electrician
	precompression pump wrong
General fault and
“Admission pressure
of hot-water pump
too low” LED light
up. (Only with ABS	Pressure switch	Replace pressure switch	Customer
hot water)	precompression hot-water		Service
	pump in the ABS hot water
	defective
	Too many utilisers	Close down some utilisers	Operator
	simultaneously opened
General fault and
“Drop in system
pressure” LED light
up on the printed	Pipe burst in the	Turn off installation and	Customer
circuit board (flow
	high-pressure network	repair pipeline	Service
without pressure
longer than	Pressure switch defective	Replace pressure switch	Customer
15 seconds)			Service

5.956-648 A10369 (06/98) F2