Stihl RE 661 Notice D'emploi page 51

Diagnostic codes appear in the temperature display in case of a malfunction. This can be for the following reasons.
Indicator Status /reason
FLF Flow sensor fault
FLO Water supply turned off, water flow too low
Pressure and flow control on machine or spray gun is
set for a water flow that is too low
Detergent tank empty
Scale has formed in the machine
FUE Low fuel level
HOP Motor is overheated
HOS Machine is overheated
LEA Detergent tank empty
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)
LHE Flame sensor is clogged with soot
Fault in ignition or fuel system
LHL Burner fault
POL Pump oil level too low
SEC Temperature sensor effective
SEO Temperature sensor effective
UPC Microprocessor error
1)
STIHL recommends STIHL servicing dealers
RE 661, RE 661 PLUS, RE 961 PLUS
Remedy
1)
Contact a dealer ; cold water mode is possible
Ensure a sufficient flow of water
Increase water flow on machine or spray gun
Fill the detergent tank or set the metering valve to "0"
Contact a servicing dealer
Refuel
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
Contact a servicing dealer
Fill the detergent tank
Clean filter – see "Maintenance"
Contact a servicing dealer
Contact a servicing dealer
Switch machine off and on again, actuate spray attach-
ment for more than 1.5 seconds
Clean flame sensor – see "Maintenance"
1)
Contact a dealer ; cold water mode is possible
Contact a servicing dealer
Fill the pump oil – see "Oil change"
1)
Contact a dealer ; cold water mode is possible
1)
Contact a dealer ; cold water mode is possible
Contact a servicing dealer
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