Troubleshooting, M danger, Fault – Karcher HDS 9-14-4 ST User Manual
Page 32: Possible cause, Remedy, Of whom, There is no voltage in the machine, Check electrical mains, Electrician, Safety time switch is on
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11
ƽ
Danger
Risk of injury! The main switch of the vacuum cleaner is to be
switched off or the Cekon plug must be unplugged while carrying
out any repairs or maintenance jobs.
*
Note
Switch the plant off and then on to undo the burner failure.
**
Troubleshooting
Fault
Possible cause
Remedy
of whom
Machine is not running; indi-
cator lamp for operations
stand-by (F) is not glowing
There is no voltage in the machine. Check electrical mains.
Electrician
Safety time switch is on.
Switch off the appliance switch briefly and
switch it on again.
Operator
Fuse in the control circuit (F3) has
burnt off. Fuse is located in the
control transformer (T2).
Install a new fuse; if it burns out again, then
remove the cause for the over-loading.
Customer Service
Pressure switch HP (High pres-
sure) or LP (Low pressure) is de-
fective.
Check pressure switch.
Customer Service
Timer module (A1) defective.
Check connections, replace if required.
Customer Service
Exhaust thermostat (B8) tripped.
Allow plant to cool down. Unlock the exhaust
thermostat (B8). Eliminate the cause for the
disturbance.
Customer Service
+ Indicator lamp for engine
over-heating (G) is glowing
Thermal sensor (WS) in the engine
or the over-current protection
switch (F1) has got activated.
Rectify cause for over-loading.
Customer Service
The water shortage safeguard in
the swimmer tank has got activat-
ed.
Remove the water shortage.
Operator
Burner does not ignite or the
flame glows off during opera-
tion
Thermostat (B) has been set at a
very low temperature.
Set the thermostat to a higher level.
Operator
Machine switch is not positioned to
burner
Switch on the burner.
Operator
The water shortage safeguard in
the safety block has got switched
off.
Ensure adequate water supply. Check ma-
chine for leaks.
Operator
The indicator lamp Burner
failure (E) glows*
Fuel tank empty.
Refill fuel.
Operator
Fuel filter choked.
Clean fuel filter - to do that remove the fuel fil-
ter by turning, clean it and again turn it in.
Operator
Photo-cell flame monitoring device
has been set wrongly or is defec-
tive.
Check the correct positioning of the photo-
cell. **
Operator
No ignition spark exists (can be de-
tected through the sight glass in
the burner lid).
Check electrodes distance between ignition
transformer and ignition cable. Rectify the
distance or replace defective parts. Clean it,
if necessary.
Customer Service
Ignition motor is locked.
Removing the blockage. Remove the stop-
per (I) on the operating plan and unlock the
over-current protection switch. Insert back
the stopper.
Customer Service
Failure of hte fuel pump or the fuel
solenoid valve.
Check parts and replace defective parts.
Operator
32
EN