Kaysun KSDF-28 DN4.0, Руководство по установке, Страница: 18 / 24

16
15.2 Unit Troubleshooting
Symptom Possible causes Troubleshooting steps
The unit does not start
A power cut has occurred (the power to the
premises has been cut-off).
Wait for the power to come back on.
The unit is powered off.
Power on the unit. This indoor unit forms part of
an air conditioning system that has multiple indoor
units that are all connected. The indoor units cann’t
be powered on individually - they are all connected
to one, single power switch. Ask a professional
technician for advice regarding how to safely power
on the units.
The power switch fuse may haveburned out. Replace the fuse.
The remote controller’s batteries are dead Replace the batteries.
Air flows normally but
doesn’t cool
The temperature setting is not correct Set the desired temperature on the remote controller.
The unit starts or stops
frequently
Arrange for a professional technician to check the following:
Too much or too little refrigerant.
•
No gas in the refrigerant circuit.
• The outdoor unit compressors have malfunctioned.
• The power supply voltage is too high or too low.
• There is a blockage in the piping system.
Low cooing effect
Doors or windows are open. Close the doors and windows.
Sunlight is shining directly onto the unit.
Close shutters/blinds to shield the unit from direct
sunlight.
The room contains many heat sources such as
computers or refrigerators.
Turn off some of the computers during the hottest part
of the day.
The unit’s air filter is dirty. Clean the filter.
The outside temperature is unusually high.
The cooling capacity of the system reduces as the
outdoor temperature rises and the system may
not provide sufficient cooling if the local climate
conditions are not considered when the system’s
outdoor units were selected.
Engage a professional air conditioning engineer to check the following:
•
The unit’s heat exchanger is dirty.
• The unit’s air inlet or outlet is blocked.
• A refrigerant leak has occurred.
Low heating effect
Doors or windows are not completely closed. Close doors and windows.
Arrange for a professional technician to check the following:
A refrigerant leak has occurred.