Midea MTB1T-96CWN1 Technical & Service Manual page 84

Midea R410A T3 50Hz Top-discharge Series
indoor unit and the outdoor unit. The sizzles may be heard shortly after the unit stops
running or when the unit runs in the defrost mode. That is the sound raised because the
refrigerant stops flowing or changes to the volume of flow.

Squeak may occur when the air conditioner starts or stops running. That is the sound
raised because the plastic assemblies inflate or deflate when the temperature changes.

Dust is blown out of the indoor unit.
When the air conditioner resumes service after a long period out of service, the dust in the
indoor unit will be blown out.

The indoor unit gives out smell.
The indoor unit absorbs the smell of the room, furniture or smoking, and gives it out when
running.

Shift from cooling mode to air supply mode.

In order to prevent frosting of the indoor heat exchanger, the air conditioner shifts to air
supply mode automatically, and resumes to cooling mode in a short time.

When the room temperature decreases to the set temperature, the air conditioner will
shut down the compressor automatically, and shifts to the air supply status. After the
room temperature rises, the compressor will restart. The action of the compressor in
the heating mode is the contrary.
11.2 Faults of air conditioner and cause

If any of the following exceptions occur, stop operation of the air conditioner immediately.
Turn off the power switch, and contact the local aftersales service center of manufacturer:

The Run indicator blinks quickly (2 blinks per second). After turning off the power
switch and then turning it on again, that indicator still blinks quickly.

The receiving function of the remote controller fails, or the start and shutdown
operation is abnormal.

The fuse blows out frequently, or the circuit breaker protection occurs frequently.
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MCAC-UTSM-201707