3
Operation manual
Special remarks
Troubleshooting
1.If Trouble Still Remains ...
If the trouble still remains even after checking the following, contact your contractor and inform them of
the
following items.
(1)Unit Model Name
(2)Content of Trouble
2. No Operation
Check whether the SET TEMP is set at the correct temperature.
CAUTION
3.
Not Cooling or Heating properly
Check for obstruction of air flow of outside or inside units.
Check if too many heating sources are located in the room.
Check if the air filter is clogged with dust.
Check if the doors or windows are open.
Check if the temperature condition is not within the operation range.
4. This is Not Abnormal
Smells from indoor unit
Sound from Deforming Parts
Steam from Outdoor Heat Exchanger
During defrosting operation, ice on the outdoor heat exchanger is melted, resulting in making steam.
Dew on Air Panel
When the cooling operation continues for a long period of time under high humidity conditions, dew may
form on the air panel.
Refrigerant Flow Sound
While the system is being started or stopped, sound from the refrigerant flow may be heard.
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Heating capacity depends on external factors as outdoor unit temperature. Heating capacity might decrease if
outdoor ambient temperature is too low.
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In several minutes after the heating mode is started, the fan of the indoor unit will not run until the heat
exchanger of the indoor unit reaches a certain temperature. in order to prevent cold draft.
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When the outdoor temperature is too low, frost or ice may form in the outdoor heat exchanger, reducing
heating performance. When this happens, a defrosting system of the air conditioner will operate. At the same
time the fan in the indoor unit stops (or runs at a very low speed in some cases), to prevent cold draft. After
defrosting is over, the heating operation and fan speed restart.
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3 minutes protection after compressor stop
To protect compressor, it will be continue off for at lest 3 minutes once it has stopped.
5 minutes protection
Compressor must run 5 minutes at least once start running. In the 5 minutes, compressor will not stop even
the room temperature reaches the setting temperature point unless you use remote remote controller turn off
the unit (all indoor unit can be turned off by user).
Cooling operation
The fan of the indoor unit will never stop running in cooling operation. It remains running even if the
compressor stops working.
nti-freezing function during cooling
When the temperature of the air from the indoor outlet is too low, the unit will run for some time under the fan
mode, to avoid frost or ice forming in the indoor heat exchanger.
Cold air prevention
Defrosting
Blowing out the residual heating air
When stopping the air conditioner in normal operation, the fan motor will run with low speed for a while to blow
out the residual heating air.
Auto re-start from of Power Break
When the power supply is recovered after power break, all preset are still effective and the air-conditioner will run
according to the previous setting.
Heating operation
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During system starting or stoping, a sound might be heard. However, this is due to thermal
deformation of plastic parts. It is not abnormal.
Smell adheres on indoor unit after a long period of time. Clean the air filter and panels or allow a good
ventilation.
