Stihl RE 521 Gebrauchsanleitung Seite 51

If the LEDs on the control panel light up or blink, this may be caused by the following:
LED Indicator Status/reason
Flash Detergent tank empty
simultane -
ously
Filter plugged in the water feed
Leak in high-pressure hose or connections or in the
spray attachment
High-pressure pump is leaky, draws air
Impermissible operating state from repeated short-
term operation (shorter than 1.5 s)
Flash Motor is overheated
alternately
Machine is overheated
Flashes Flame sensor is clogged with soot
slowly
Flashes Malfunction in fuel or ignition system or burner
quickly
2)
STIHL recommends STIHL servicing dealers
RE 521, RE 551 PLUS, RE 581, RE 581 PLUS
Remedy
Fill the detergent tank
Clean filter – see "Maintenance"
Contact a servicing dealer
Contact a servicing dealer
possible
Contact a servicing dealer
Switch off the machine and let it cool down
do not use an extension cord, use an extension cord
with the correct cross-section – see "Connecting the
machine to the power supply"
Contact a servicing dealer
Clean flame sensor – see "Maintenance"
Contact a servicing dealer
possible
English
2)
2)
; cold water mode is
2)
2)
2)
; cold water mode is
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