DC Inverter U-match Series Duct Type Unit
58
5.3.2 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.
5.3.3 Drainage Pipe
Periodically check if the drainage pipe is blocked to smooth the condensate
water.
5.3.4 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 crankcase of
outdoor compressor;
(6) Check if the installation of outdoor unit is firm, if not, please contact with C&H
appointed maintenance center.
5.3.5 Maintenance at the End of the Using Season
(1) Cut off the main power of air conditioner;
(2) Clean the filter screen, indoor and outdoor unit;
(3) Clean the dust and sundries in indoor and outdoor unit;
(4) If the outdoor unit is rusty, coat the rusty location with paint to prevent it from
expanding.
