Kärcher HDS 9/16-4 ST Gas Mode D'emploi page 13

Fault
Indicator lamp for exhaust
gas thermostat (K) is glowing
Indicator lamp for protection
against calcification (H) glows
Inadequate or no flow of de-
tergent
Full pressure does not build
up in the appliance
High pressure pump is knock-
ing; manometer is swaying
wildly
Device continuously turns on
and off while hand spray gun
is open
Appliance does not switch off
when the hand-spray gun is
closed
34
Possible cause
The exhaust temperature limiter
has been triggered.
The softener is over.
Dosing valve to position "0".
Detergent filter blocked or tank is
empty.
Detergent suction hoses, detergent
metering valve or detergent sole-
noid valve are leaky or blocked.
Electronics or solenoid valve is de-
fective.
Flushed the nozzle.
Detergent tank is empty.
Not enough water
Sieve at the water inlet is blocked. Check, dismantle sieve and clean it.
Leaky detergent dosing valve.
Leaky detergent hoses.
Swimmer valve is jammed.
Safety valve is leaky.
Flow valve is leaky or has been set
at a low value.
Solenoid valve for pressure release
is defective.
Vibration dampener is defective.
Water pump does not suck in ade-
quate air.
Nozzle in spray pipe is blocked.
Appliance is decalcified.
Switching point of the over-current
monitor has got shifted.
Sieve blocked in the water shortage
safe guard.
The pump has not been fully vent-
ed.
Safety valve or safety valve washer
is defective.
Pressure switch of the overflow
controller.
Remedy
Open the hand-spray gun until the plant has
cooled down. Switch the plant off and then on
on the operating panel to unlock the tempera-
ture limiter. If the event recurs, call Customer
Service.
Refill the softener.
Adjusting the detergent metering valve.
Clean and/or refill.
Check, clean.
Replace
Replace the nozzle.
Refill detergent.
Ensure adequate water supply.
Check and seal it.
Replace
Check and ensure that it moves freely.
Check the setting; install new washers, if re-
quired.
Check valve parts; replace damaged parts;
clean the dirt.
Replace solenoid valve.
Replace vibration dampener.
Check suction system and remove leaks.
Check, clean.
See section "Descaling".
Get somebody to reset the over-current mon-
itor.
Check, dismantle sieve and clean it.
Set the machine switch to "0" and pull the
hand-spray gun until no fluid comes out of the
nozzle. Turn on the appliance again. Repeat
this procedure until the full operating pressure
is reached.
Replace the safety valve and/or the washer. Customer Service
Check pressure switch and overflow control-
ler.
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EN
of whom
Operator
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Customer Service
Operator
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Customer Service
Customer Service
Customer Service
Customer Service
Operator
Operator
Operator
Customer Service
Operator
Operator
Customer Service