DC Inverter U-match Series Cassette Type Unit
58
How to clean the air intake grill
(3) Take out the air intake grill.
(Open the air intake grill at an
angle of 45 degrees, and then lift it
up).
(4) Cleaning
Use soft brush, water, neutral
detergent to clean. After cleaning,
shake off the water or let it dry.
NOTICE:
do not use hot water
(above 45°C) to clean, otherwise
the filter may be discolored or out
of shape.
(5) Install the air intake grill.
Refer to step 3.
(6) Install the air filter.
Same with step 4 in “Clean Air Filter”.
(7) Close the air intake grill.
Refer to step 1.
5.3.3 Heat Exchanger of Outdoor Unit
Conduct cleaning for the heat exchanger of outdoor unit periodically, clean it
once at least in every two months. Clean the dust and sundries on the surface of the
heat exchanger with dust collector and nylon brush, if there’s compressed air
source; Use the compressed air to blow the dust on the surface of the heat
exchanger. Don’t use tap water for cleaning.
5.3.4 Drainage Pipe
Periodically check if the drainage pipe is blocked to smooth the condensate
water.
5.3.5 Notices at the Beginning of the Using Season
(1) Check if the air inlet/outlet of indoor/outdoor unit is blocked.
(2) Check if the ground connection is reliable.
(3) Check if the battery of remote controller is replaced.
(4) Check if the air filter screen is properly installed.
(5) If starting up again after long-term shut down, preset the power switch of
air conditioner to “ON” status before 8h of operation, to preheat the
