Hyundai HYWE 15-54 PRO, Manual

Page: 19 / 96

> 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 ma-
chine will not start work-
ing
Cause • Plug not properly inserted
in socket.
• Electric socket is faulty.
• The main voltage is insuf-
ficient.
• 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 nozzle trigger
pressed; if problem per-
sists, contact an author-
ised service centre.
• Refer to maintenance sec-
tion.
Fault The motor stops suddenly
Cause • Thermic safety switch has
tripped due to the over-
heating.
• Cable extension seems to
be inadequate.
Repair • Leave motor to cool for a
few minutes. If the prob-
lem persists, contact an
authorised service centre.
• Refer to maintenance sec-
tion.
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 minimum.
• The nozzle is worn out.
Repair • Check that the delivery
rate is 30% higher than the
value stated on the appli-
ance’s technical data plate.
• Remove and clean the fil-
ter.
• 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 deformed.
• 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 nozzle with
the pin provided.
Contact an authorised serv-
ice centre.
Contact an authorised serv-
ice centre.
Contact an authorised serv-
ice 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 regu-
lator valve.
• Leaks from water unions.
EN
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