RE 661, RE 661 PLUS, RE 961 PLUS
English
49
Diagnostic codes appear in the temperature display in case of a malfunction. This can be for the following reasons.
Indicator Status /reason Remedy
FLF Flow sensor fault Contact a dealer
1)
; cold water mode is possible
FLO Water supply turned off, water flow too low Ensure a sufficient flow of water
Pressure and flow control on machine or spray gun is
set for a water flow that is too low
Increase water flow on machine or spray gun
Detergent tank empty Fill the detergent tank or set the metering valve to "0"
Scale has formed in the machine Contact a servicing dealer
1)
FUE Low fuel level Refuel
HOP Motor is overheated Set the main switch to "0" position, let the machine cool
down
Do not use an extension cord unless the extension has
a sufficient cross-section – see "Connect machine to
power supply"
Have the electrical connection checked; check plug,
cord and switches
HOS Machine is overheated Contact a servicing dealer
1)
LEA Detergent tank empty Fill the detergent tank
Filter plugged in the water feed Clean filter – see "Maintenance"
Leak in high-pressure hose or connections or in the
spray attachment
Contact a servicing dealer
1)
High-pressure pump is leaky, draws air Contact a servicing dealer
1)
Impermissible operating state from repeated short-term
operation (shorter than 1.5 s)
Switch machine off and on again, actuate spray attach-
ment for more than 1.5 seconds
LHE Flame sensor is clogged with soot Clean flame sensor – see "Maintenance"
Fault in ignition or fuel system Contact a dealer
1)
; cold water mode is possible
LHL Burner fault Contact a servicing dealer
1)
POL Pump oil level too low Fill the pump oil – see "Oil change"
SEC Temperature sensor effective Contact a dealer
1)
; cold water mode is possible
SEO Temperature sensor effective Contact a dealer
1)
; cold water mode is possible
UPC Microprocessor error Contact a servicing dealer
1)
1)
STIHL recommends STIHL servicing dealers
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