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MIDEA DIGITAL SCROLL CENTRAL AIR-CONDITIONER AUXILIARY HEATING EQUIPMENT
In winter, due to the difference of the area and building construction, please purchase the indoor
unit with auxiliary heating to enlarge the heating capacity. When turning to the heat mode the
air-conditioner with auxiliary heating will run at the set temp. It's no need to install auxiliary
heating equipments on site for 4-way cassette type and duct/ceiling type (with auxiliary heating).
7 - ABNORMAL PHENOMENON
Please read the following illustration before applying for the service:
TROUBLES
From outdoor unit
• white cold fog and condensing dew.
• hiss and poop are heard.
From indoor
• Hiss for once.
unit
• Abnormal smell blown out.
• Operation lamp flashes.
• Noise, hydrometeor and cold
air appear when the running
stops.
Stop operation automatically
• No operation.
• Insufficient cooling
• Insufficient heating
Do not
work
If the air- conditioner is found any failures as mentioned below, please turn off the power immediately.
Then contact the local dealer.
• ON/OFF operation is not valid.
• Fuse or leakage protector frequently blown.
• Some matter or water falls into the unit.
• Fan function stop automatically to defrost. It
is the start and stop sound of the electromagnetic
valve.
• At the beginning and ending of the running
process, sounds like water flow in valve appears,
and be enhanced at the first 2~3 minutes, this
is refrigerant flow sound.
• Slight hiss and poop are caused by mild flexing
of the heat exchanger as temperature changes.
• Pieces of the wall, carpet, furniture, cloth,
cigarette and cosmetics adhere to the unit.
• Connect to the power after the power cut.
• Other equipments heating process stops the
cooling operation.
• The operator sets an opposite mode against
the fixed cooling and heating mode.
• The refrigerant will suddenly move to avoid
resorting in the indoor unit, then caused kak
sounds. Hydrometeor or cold air appears when
other indoor unit is heating or cooling.
• The sound of the expansion valve when
supplied power.
• If the timer reached the set time.
• If no power.
• If the fuse is blown.
• If starting the protection device (the operation
lamp lights).
• If the timer is on the set time.
• If choosing the cooling and heating
simultaneously.
• If the outdoor unit air inlet or outlet is blocked.
• If the doors and windows are open.
• If the dust filter is choked by collective dust.
• If the air louver is in the right place.
• If the fan speed is shifted in low or if the shift
is under FAN mode.
• If the setting temperature is appropriate.
• Still no operation after checking the protector(P4).
• Quite different from other indoor unit or ordinary
state.
19
CAUSES
.
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