Midea MTA-76C(H)RN1 Technical Manual page 116

Midea R410A T3 Top-discharge Split Type Series 50Hz
and then cut off the power supply.

Startup after a long period out of service.
Check the following issues:
Check whether the air inlet or outlet of the indoor unit and outdoor unit is blocked.
Remove foreign substance if any.
Check whether the ground wire is connected properly.
Check whether the condensate water is discharged normally.
Check whether the insulation work of refrigerant circuit and ventilating duct is on sound
status.
Check whether the installing seat is corroded or rusted.

Startup

Connect the indoor unit 12 hours after connect the outdoor unit to power supply.

Switch on the power control of remote controller or wired controller, and then startup
the air conditioning.

Maintenance and upkeep of outdoor unit

The edge of some sheet metal assemblies and the fin of the condenser are very sharp.
Incorrect operation may cause harm. Be cautious when cleaning them up.

Check the air inlet and outlet of the outdoor unit periodically to see whether they are
blocked by stain or lampblack.
12.1 Maintenance of duct type indoor unit

Only the professionals can perform repair. Before maintain the unit, turn off the main power
switch.

Do not use water or air with a temperature higher than 50° C to clean the panel.

Check and maintain the ventilating slot once every half years, wash and maintain with
corresponding disinfection shall process once.

Every two years are recommended. The filter can expel dust and other particles in the air. If
it is blocked, the effect of the air conditioner will be degraded. Therefore, clean it every
another two weeks if the air conditioner already has been used for a long period. If the
indoor unit is installed in a place with heavy dust, clean the filter more often.
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MCAC-UTSM-201501