Troubleshooting - Hyundai HYWE 20-90PRO Handbuch

REPLACING THE SPRAY ROD NOZZLE
Replace the nozzle when the pressure drops
below the normal values.
ELECTRIC MOTOR
If the motor malfunctions, it cuts out. Wait
5-10 minutes before restarting. If the problem
persists, refer to the "TROUBLESHOOTING"
section. If you are still unable to eliminate the
problem, stop using the machine and contact
an Authorized Service Centre.
ELECTRICAL CORD
• WARNING: Take care not damage the electric
cable. Have a damaged power cord replaced
immediately by an authorized service point or
an electrical specialist.
> ELECTRIC DIAGRAM
See illustrations, page 78.
> WATER DIAGRAM
See illustrations, page 78.
>

TROUBLESHOOTING

Before doing any work on the machine, discon-
nect the electricity and water supplies and dis-
charge the pressure. Proceed systematically to
identify faults following the chart below; if you
are still unable to eliminate the problem, call in
the Authorized After-Sales Service.
Fault When switch "ON" the machine will not
start working
Cause • Plug not properly inserted in socket.
• Electric socket is faulty.
• The main voltage is insufficient.
• The pump is stuck.
• Gauge of extension lead not sufficient.
Repair • Fit plug in power socket correctly.
• Have electrical socket checked.
• Have a check made on the suitability of
the mains system.
• Turn switch to ON while keeping noz-
zle trigger pressed; if problem persists,
contact an authorised service centre.
• Refer to maintenance section.
Fault The motor stops suddenly
Cause • Thermic safety switch has tripped due
to the overheating.
• Cable extension seems to be inad-
equate.
Repair • Leave motor to cool for a few minutes.
If the problem persists, contact an au-
thorised service centre.
• Refer to maintenance section.
Fault The pump doesn't reach the necessary
pressure
Cause • Insufficient flow.
• Water inlet filter is clogged.
• Suction/delivery valves are clogged or
worn out.
• Pressure regulator valve set on mini-
mum.
• The nozzle is worn out.
Repair • Check that the delivery rate is 30%
higher than the value stated on the ap-
pliance's technical data plate.
• Remove and clean the filter.
• Contact an authorised service centre.
• Increase the pressure by screwing in the
pressure regulator knob.
• Replace the nozzle.
Fault Fluctuating pressure
Cause • The nozzle is either clogged or de-
formed.
• Suction/delivery valves are clogged or
worn out.
• Worn gaskets.
• Pressure regulator valve gaskets worn.
• The filter is dirty.
Repair • Dismantle the lance and clean the noz-
zle with the pin provided.
• Contact an authorised service centre.
• Contact an authorised service centre.
• Contact an authorised service centre.
• Remove and clean the filter.
Fault Water leak from appliance
Cause • Water leaking from the pump.
• Leaks from hose reel (if present).
• Leaks from pressure regulator valve.
• Leaks from water unions.
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EN