Bosch Climate 5000 MS 42 OU Owner's Manual page 6

Unit Parts and Major Functions
Auto-Restart (some models)
In case of power failure, the system will immediately stop. When power
returns, the operation light on the indoor unit will flash. To restart the
unit, press the ON/OFF button on the remote control. If the system has
an auto restart function, the unit will restart using the same settings.
White mist emerging from the indoor unit
• In COOL mode, a white mist may be generated due to a large
temperature difference between air inlet and air outlet in places with
high relative humidity.
• In HEAT mode, a white mist may be generated due to moisture
created in the defrosting process when the air conditioner restarts
after defrosting.
Noise coming from the air conditioner
• You may hear a low hissing sound when the compressor is running
or has just stopped running. This sound is the sound of the refriger-
ant flowing or coming to a stop.
• You may also hear a low "squeaking" sound when the compressor
is running or has just stopped running. This is caused by temporary
heat expansion and cold contraction of the plastic parts in the unit
when the temperature is changing.
• A noise may be heard due to the louvre restoring itself to its original
position when power is first turned on.
Dust blowing out from the indoor unit
This is happens when the air conditioner has not been used for a long
time or during its first use.
Smell emitted by the indoor unit
This caused by the indoor unit giving off smells from building materials,
furniture or smoke.
The air conditioner turns to FAN ONLY mode from COOL or HEAT
mode (for cooling and heating models only).
When the indoor temperature reaches the set temperature setting, the
compressor will stop automatically, and the air conditioner turns to FAN
only mode. The compressor will start again when the indoor temperature
rises in COOL mode or falls in HEAT mode to the set point.
Droplets of water may form on the surface of the indoor unit when
cooling occurs in relatively high humidity (defined as higher than 80%).
Adjust the horizontal louvre to the maximum air outlet position and
select HIGH fan speed.
Heating mode (for cooling and heating models only)
The air conditioner draws in heat from the outdoor unit and releases it via
the indoor unit during heating. When the outdoor temperature falls, heat
drawn in by the air conditioner decreases accordingly. At the same time,
the heat load of the air conditioner increases due to a larger difference
between indoor and outdoor temperature. If a comfortable temperature
cannot be achieved with the air conditioner alone, it is recommended
that you use a supplementary heating device.
Lightning or a wireless car telephone operating nearby may cause the
unit to malfunction. Disconnect the unit from its power source and then
re-connect the unit with the power source again. Push the ON/OFF
button on the remote controller to restart operation.
Energy Saving Tips
• DO NOT set the unit to excessive temperature levels.
• While cooling, close the curtains to avoid direct sunlight.
• Doors and windows should be kept closed to keep cool or warm air
in the room.
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• DO NOT place objects near the air inlet and outlet of the unit. This
will reduce the efficiency of the unit.
• Set a timer and use the built-in SLEEP/ECONOMY mode if applica-
ble.
• If you don't plan to use the unit for a long time, remove the batteries
from the remote control.
• Clean the air filter every two weeks. A dirty filter can reduce cooling
or heating efficiency.
• Adjust louvres properly and avoid direct airflow.
Closing curtains during heating also helps keep the heat in
Fig. 5.
Doors and windows should be kept closed
Fig. 6.
Climate 5000 MS – 6720887258 (2018/04)