54
Maintenance
– If the operation light is on, the system is operating
normally. To prevent the compressor motor from
overloading, the air conditioner switches on 3 minutes
after the switch-on control.
Insucient cooling or heating capacity. It can be caused:
– by dirt in the heat exchanger;
– by blockage of the unit's inlet, outlet or filter;
– by low fan speed;
– by the "fan only" operating mode;
– by inappropriate setting of the temperature.
The direction of the fan is not the same as the one set.
– The direction of air is not the same as the one on the
user’s front display.
– The direction of air does not oscillate, since the units
are controlled by the centralised controller.
The speed of the fan is not the same as the one set.
– The speed of the fan does not change even when
the fan speed adjustment button is pressed. When
the indoor temperature reaches the setpoint during
heating, the outdoor unit turns o and the indoor unit
enters fan speed silent mode, to avoid the blowing of
air directly at the user of the room. The speed of the
fan does not change even when the button is pressed
for another heating operation indoors.
Dust and dirt in the unit
– When the unit is used for the first time, because there
is dust in the unit.
Strange smell from the unit
– This unit will absorb the smells of rooms, items of
furniture, cigarettes and others, to then disperse
them. Small animals that can enter the unit may cause
smells.
The fan of the ODU does not work
– During operation. Check the speed of the fan motor to
optimise operation of the product.
Hot air can be felt when the indoor unit stops
– There are dierent types of indoor unit in use in the
same system. When another unit is in operation, part
of the refrigerant continues to flow through this unit.
Switching from cooling mode to fan mode
– To prevent the internal evaporator from freezing,
the system automatically switches to fan only mode
and then switches back to cooling mode after a few
minutes.
– If the temperature of the conditioned room reaches
the
set value, the compressor switches o and the
indoor unit switches to fan mode; if the temperature
rises again, the compressor will restart. This also
occurs with heating mode.
9.1 Maintenance after shutting the unit
down for a long period
For example, at the beginning of summer or winter.
– Check and remove all the objects that could
obstruct the air inlets and outlets of the indoor and
outdoor units.
– Contact maintenance personnel to clean the air
filter and the casing of the outdoor unit. Make sure
that the air filter is clean and installed properly.
– Connect the power supply 12 hours before the
unit is to be used to ensure that the unit operates
smoothly. At switch-on, the user interface is
displayed.
9.2 Maintenance before the unit is shut
down for a long period
For example, at the end of winter or summer.
– Operate the indoor unit in fan mode for about half
a day to dry the internal parts of the unit.
– Disconnect the power supply
– Contact maintenance personnel to clean the air
filter and the casing of the outdoor unit. Make sure
that the air filter is clean and installed properly.
To Next Page
Loading...
Need help?
General
