Common Problems - INVENTOR V5MKI32-18WiFiR/U5MRS32-18 Benutzerhandbuch

Troubleshooting
CAUTIONS
If one of the following conditions occurs, switch off the power supply immediately and contact your
dealer 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 te air conditioner.
• Other abnormal sitations.

Common Problems

The following symptoms are not a malfunction and in most situations will not require repairs.
Problem
The unit has a 3-minute protection feature that prevents the unit from overloading. The unit can-
not be restarted within three minutes of being turned off.
Unit does not
Cooling and Heating Models: If the Operation light and PRE-DEF (Pre-heating/ Defrost) indicators
turn on when
are lit up, the outdoor temperature is too cold and the unit's anti-cold wind is activated in order
pressing ON/ OFF
to defrost the unit.
button
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 its setting to prevent frost from forming on the unit. Once the temperature
The unit changes
increases, the unit will start operating again.
from COOL mode
The set temperature has been reached, at which point the unit turns off the compressor. The unit
to FAN mode
will resume operating when the temperature fluctuates again.
The indoor unit In humid regions, a large temperature difference between the room's air and the conditioned air
emitswhite mist can cause white mist.
Both the indoor
and outdoor When the unit restarts in HEAT mode after defrosting, white mist may be emitted due to moisture
units emit white generated from the defrosting process.
mist
A squeaking sound is heard when the system is OFF or in COOL mode. The noise is also heard
when the drain pump (optional) is in operation.
The indoor unit
makes noises
A squeaking sound may occur after running the unit in HEAT mode due to expansion and con-
traction of the unit's plastic parts.
A low hissing sound may occur during operation. This is normal and is caused by refrigerant gas
Both the indoor
flowing through both the indoor and outdoor units.
unit and outdoor
A low hissing sound may be heard when the system starts, has just stopped running or is defrost-
unit make noises
ing. 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 its current operating mode.
makes noises
Possible Causes
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