MALTEC MASTERCOLD Bedienungsanleitung Seite 18

Analysis and exclusion of special phenomena
Phenomenon
The indicator light does
not go on and the fan
does not turn
The fan is working, but
the indicator light is not
on
The indicator light is on
and the fan is not
working
The color of the
indicator does not
correspond to the
position of the function
switch
Indicator light indicates
correct, fan working, no
cooling (heating)
Indicator light indicates
correct, fan works,
refrigeration (heating)
effect is poor
Possible reasons
The power plug is not
properly plugged in;
Power failure; The
switch is not unplugged
into the working
position
Indicator light is
broken;
Fan is broken; Fan line
falls off; Foreign body
stuck fan blade
Incorrect polarity of
direct current supply
The cooling plate is
broken; The lead of the
cooling plate has come
off
Ventilation grille is
blocked; Too many
items in the box; The
door (cover) is not
closed properly
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Handling method
Plug into a power outlet;
Check for power failure;
Check whether the
position of the switch is
correct; Check whether
fuses in cigarette butts
are damaged;
Professionals are needed
to replace the light;
Professional personnel are
required to check whether
the fan lead is off or
replace the fan; Check
whether there is any
foreign matter stuck on
the fan blade;
Check whether the
polarity of DC power
supply is consistent with
the product power supply
demand;
Professional personnel are
required to check whether
the lead wire of the
cooling plate falls off or
replace the cooling plate;
Remove objects near the
ventilation grille and dust
accumulation; Too many
items require longer
cooling times; Check
whether the door (cover)
is closed;