Karcher HD 6000 C - Manual (Page 26)

HD 4000 C / HD 6000 C English
5.956-648 A10369 (06/98)
F. Trouble Shooting
F3
Motor fault lights up
Motor protection switch
Q1 or Q2 has triggered
owing to overcurrent or
drop-out of one phase
of power supply
system Check voltage of the three
phases Customer
Service/
Electrician
Motor protection switch
falsely set Set in accordance with
circuit diagram Customer
Service/
Electrician
Pressure at pump
outlet too high Check pressure, adjust as
necessary Customer
Service
Available time is less than
6 hours Site high-pressure
network is leaky Seal it off Operator
Pressure switch
defective Replace Kundendienst
System does not start up
when unlock button is
pressed, no indicator light
illuminates Site power supply
interrupted switch on Operator
Emergency-STOP
master switch off switch on Operator
Motor protection switch
for control system and
precompression pump
has been triggered check Customer
Service /
Electrician
Control-circuit fuse on
transformer defective replace, check cause Customer
Service /
Electrician
Printed circuit board
defective, green LED
does not blink replace, check Customer
Service
EPROM loose install again, check cause Customer
Service /
Electrician