Maintenance - Midea MTA1-76HR Technical Manual

MCAC-RTSM-201301-01

5. Maintenance


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 filter or 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.

If the stain is heavy and difficult to clean, replace the filter.

Do not replace the power cable without permission. If the power cable is damaged, specialized
power cable must be used as substitute.

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.

Operation required before leaving the unit idle for a long period.

Let the air conditioner run in the fan mode for about half a day, and let its interior be fully dry.

Switch off the power by the button in remote controller, and then cut off the power supply.

When the main power switch is turned on, a certain extent of electric power is consumed
even if the air conditioner does not run. Turning off the main power switch can save energy.

Remove the batteries out of the remote controller.

After the air conditioner has been in service for several seasons, foreign substance
accumulates inside the unit to an extent dependent on the working conditions. Therefore,
shut down the air conditioner through the ON/OFF button of the controller, 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.

Remove and replace the fan motor assembly
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