28
Troubleshooting
PROBLEM CAUSES REMEDY
The unit does not
work
• the power is off
•
the plug is not inserted into the electrical outlet
• the function selector is in the “•” position
• the timer pointer is on STOP
• the timer pin is in the position and it is not
programmed to operate at that moment
• wait
• plug in
• move the selector to the desired
position
• set the timer pointer to the
manual position
• adjust the timer following the
instructions given on page 23.
The unit works for
only a short time
• the thermostat has cut in
• the external unit intake is obstructed
• the fan is blocked
• turn the thermostat counter
clockwise
• remove the obstructions
• contact the Service Centre
The unit works but
does not cool the
room
• windows open
• a heat source is operating in the room (bur-
ner, light, etc.) or there are a lot of people
• thermostat adjusted too high
• air filters clogged
• the output of the unit is insufficient for the
conditions or size of the room
• close the open window
• remove the heat source
• reinsert the tube into its place
• clean the filter or replace
The tank full light is
on
• condensate is not being drained externally • remove the water through the
drain tube
The air conditioner
does not heat suffi-
ciently (mod. F300)
• the air filter is dirty
• the temperature setting is incorrect
• the grill openings are blocked
• the room is too big
• clean the filter or replace it
• reset the temperature
• remove the blockage
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