Troubleshooting; Common Problems; Troubleshooting Tips - Bosch Climate 5000 MS 42 OU Owner's Manual
Inverter one-twin/one-three/one-four/one-five split-type air conditioner
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Also See for Climate 5000 MS 42 OU:
- Installation instructions manual (144 pages) ,
- Operating instructions for users (48 pages) ,
- Installation manual (24 pages)
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Troubleshooting
4
Troubleshooting
CAUTION
If one of the following conditions occurs, isolate the power supply
immediately and contact qualified personnel for further assistance.
• The operation light continues to flash rapidly after the unit has been
restarted.
• The remote control buttons do not work.
• The unit continually trips fuses or circuit breakers.
• A foreign object or water enters the air conditioner.
• Other abnormal situations.
4.1
Common Problems
The following symptoms are not a malfunction and in most situations will
not require repairs.
Problem
Possible Causes
Unit does not turn
The unit has a 3-minute protection feature
on when pressing
that prevents the unit from overloading.
ON/ OFF button
The unit cannot be restarted within three
minutes of being turned off.
Cooling and heating models: If the operation
light and PRE-DEF (Pre-heating/ Defrost)
indicators are lit up, the outdoor tempera-
ture is too cold and the unit's anti-cold wind
is activated in order to defrost the unit.
In cooling-only models: If the "Fan Only"
indicator is lit up, the outdoor temperature is
too cold and the unit's anti-freeze protection
is activated in order to defrost the unit.
The unit changes
The unit changes its setting to prevent frost
from COOL mode
from forming on the unit. Once the tempera-
to FAN mode
ture increases, the unit will start operating
again.
The set temperature has been reached, at
which point the unit turns off the compres-
sor. The unit will resume operation when the
temperature fluctuates again.
The indoor unit
In humid regions, a large temperature
emits white mist
difference between the room air and the
conditioned air can cause white mist.
Both the indoor
When the unit restarts in HEAT mode after
and outdoor units
defrosting, white mist may be emitted due
emit white mist
to moisture generated from the defrosting
process.
The indoor unit
A squeaking sound is heard when the system
makes noises
is OFF or in COOL mode. The noise is also
heard when the drain pump (optional) is in
operation.
A squeaking sound may occur after running
the unit in HEAT mode due to expansion and
contraction of the unit's plastic parts.
8
Problem
Possible Causes
Both the indoor
A low hissing sound may occur during
unit and outdoor
operation. This is normal and is caused by re-
unit make noises
frigerant gas flowing through both the indoor
and outdoor units.
A low hissing sound may be heard when the
system starts, has just stopped running or
is defrosting. This noise is normal and is
caused by the refrigerant gas stopping or
changing direction.
The outdoor unit
The unit will make different sounds based on
makes noises
its current operating mode.
Dust is emitted
The unit may accumulate dust during
from either the
extended periods of non-use, which will be
indoor or the
emitted when the unit is turned on. This can
outdoor unit
be mitigated by covering the unit during long
periods of inactivity.
The unit emits a
The unit may absorb odors from the environ-
bad odour
ment (such as furniture, cooking, cigarettes,
etc.) which will be emitted during operation.
The unit's filters have become moldy and
should be cleaned.
The fan of the
During operation, the fan speed is controlled
outdoor unit does
to optimise product operation.
not operate
Table 2.
4.2
Troubleshooting Tips
When troubles occur, please check the following points before
contacting a repair company.
Problem
Possible Causes
The unit is
Power failure
not working
The power switch is off
The fuse is blown
Remote control batter-
ies are dead
The unit's 3-minute
protection has been
activated
Climate 5000 MS – 6720887258 (2018/04)
Solution
Wait for the power to
be restored
Turn on the power
Replace the fuse
Replace the remote
control batteries
Wait three minutes
after restarting the unit
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