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Ceiling Concealed Unit
General Maintenance
Regular checks, maintenance and care should be performed by professional personnel, which
will prolong the unit life span.
Filter Change
Regular filter changes are essential for efficient operation and extending the unit life. Change
the unit filter every 30-90 days as needed. Refer to the suggestions on the type of filter
selected.
Drain Pipe
Regularly check to see if the drain pipe is clogged in order to ensure drain condensate doesn't
overflow and cause water damage.
Check Before Seasonal Use
1. If the inlet/outlet of the indoor/outdoor unit is clogged or obstructed
2. If the ground wire is secured properly.
3. If the batteries of the wireless remote controller have been replaced.
4. If the filter screen has been cleaned and replaced securely.
5. After long periods of shutdown open the main power switch 8 hours before operating the
unit so as to preheat the compressor crankcase.
6. If the outdoor unit is installed firmly.
7. If there is something abnormal, please contact your installing dealer.
Maintenance After Seasonal Use
1.
Cut off main power supply of the unit.
2.
Clean the filter screen and indoor and outdoor units
3.
Clean any dust and debris on the indoor and outdoor units.
4.
In the event of rusting, use anti-rust paint to stop spreading of rust.
Parts Replacement
Purchase parts from the installing or servicing center or dealer if necessary.
NOTE: During leakage testing, never mix oxygen, ethyne and other dangerous gas into
refrigeration circuit. In case of hazard, it's better to use nitrogen or refrigerant to accomplish
such test.
After-sales Service
In the event you have problems with the unit or require service, please contact your local
installing/servicing dealer.
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