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6.4.3 Shorter maintenance and
replacement cycle
In the following situations, the "maintenance cycle" and
"replacement cycle" may be shortened.
If the unit is used in the following situations:
Temperature and humidity fluctuations are outside
the normal ranges.
Large
power
fluctuations
waveform distortion etc.) (must not use the unit if the
power fluctuations exceed the allowed range).
Frequent collisions and vibrations.
The air may contain dust, salt, harmful gas, or oil
such as sulphite and hydrogen sulphide.
The unit is frequently turned on and off of unit or the
operating time is too long (in places where the air
conditioning is on for 24 hours a day).
The system maintenance must be carried out by qualified maintenance personnel:
Table 7.1
Symptom
The safety device, such as a fuse, circuit breaker or a leakage
circuit breaker is triggered frequently or the ON/OFF switch is
not working properly.
The operating switch is not functioning normally.
The unit number is displayed on the user interface, and the
operating indicator is flickering, and an error code is shown on
the screen as well.
Other than the above-mentioned situations, and where the fault is not obvious, if the system continues to malfunction, carry out
the following steps to investigate.
Table 7.2
Symptom
The system does not run at all.
The system works fine in the fan-only operating mode but
stops running once it enters the heating or cooling mode.
The system is running but there is poor cooling or heating
effect.
(voltage,
frequency,
Turn off the main power switch.
Turn off the power supply.
Notify the installation personnel and report the error code.
Check if there is a power failure. Wait for the power supply to
be restored. If a power failure occurs when the unit is still
running, the system will restart automatically once the power
is restored.
Check if the fuse is broken or if the circuit breaker is working.
If necessary, replace the fuse or reset the circuit breaker.
Check if the air inlets or outlets of the outdoor or indoor units
are blocked by any obstacles. Remove the obstacles, and
maintain good ventilation in the room.
Check if the air inlets or outlets of the outdoor or indoor units
are blocked by any obstacles.
Remove the obstacles, and maintain good ventilation in the
room.
Check if the filter is blocked (please refer to the
"Maintenance" section in the manual of the indoor unit).
Check the temperature settings.
Check the fan speed settings on the user interface.
Check if the doors and windows are open. Close the doors
and windows to shut out the wind from the external
environment.
Check if there are too many people in the room when the
cooling mode is in operation. Check if the heat source of the
room is too high.
Check if there is direct sunlight shining into the room. Use
curtains or blinds.
Check that the angle of air flow is appropriate.
05
7 TROUBLESHOOTING
The warranty does not cover the damage caused by
dismantling or cleaning of the internal components by
unauthorized agents.
WARNING
When any unusual situations arise (burning
smell, etc.), stop the unit immediately and
turn off the power.
As a result of a certain situation, the unit has
caused damage, an electric shock, or a fire.
Please contact the agent.
Measures
Measures
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