Troubleshooting; Common Problems - Bosch Climate 5000 SCI Owner's Manual

5

Troubleshooting

CAUTION
If one of the following conditions occurs, isolate the power supply immediately and contact qualified personnel for further assistance.
f The operation light continues to flash rapidly after the unit has been restarted.
f The remote control buttons do not work.
f The unit continually trips fuses or circuit breakers.
f A foreign object or water enters the air conditioner.
f Other abnormal situations.
5.1

Common Problems

The following symptoms are not a malfunction and in most situations will not require repairs.
Problem Possible Causes
Unit does not turn on The unit has a 3-minute protection feature that prevents the unit from overloading. The unit cannot be restarted
when ON/OFF button is within three minutes of being turned off.
pressed
Cooling and heating models: If the operation light and PRE-DEF (pre-heating/defrost) indicators are lit up, the
outdoor temperature 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 from The unit changes its setting to prevent frost from forming on the unit. Once the temperature increases, the unit will
COOL mode to FAN mode start operating again.
The set temperature has been reached, at which point the unit turns off the compressor. The unit will resume
operating when the temperature fluctuates again.
The indoor unit emits In humid regions, a large temperature difference between the room's air and the conditioned air can cause white
white mist mist.
Both the indoor and When the unit restarts in HEAT mode after defrosting, white mist may be emitted due to moisture generated from the
outdoor units emit white defrosting process.
mist
The indoor unit makes A squeaking sound is heard when the system is OFF or in COOL mode. The noise is also heard when the drain pump
noises (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.
Both the indoor unit and A low hissing sound may occur during operation. This is normal and is caused by refrigerant gas flowing through both
outdoor unit make noises 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 makes The unit will make different sounds based on its current operating mode.
noises
Dust is emitted from The unit may accumulate dust during extended periods of non-use, which will be emitted when the unit is turned on.
either the indoor or This can be mitigated by covering the unit during long periods of inactivity.
outdoor unit
The unit emits a bad The unit may absorb odors from the environment (such as furniture, cooking, cigarettes, etc.) which will be emitted
odour during operations.
The unit's filters have become moldy and should be cleaned.
The fan of the outdoor During operation, the fan speed is controlled to optimize product operation.
unit does not operate
Table 2.
Climate 5000 SCI – 6720887414 (2019/07)
Troubleshooting
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