Kaden KMC R32, Руководство пользователя

Страница: 39 / 68

Kaden Owner’s and Controller Manual | 39
4. Troubleshooting
SAFETY PRECAUTIONS
If any of the following conditions occurs, turn off your unit immediately!
• The power cord is damaged or abnormally warm.
• You smell a burning odour.
• The unit emits loud or abnormal sounds.
• A power fuse blows or the circuit breaker frequently trips.
• Water or other objects fall into or out of the unit.
DO NOT ATTEMPT TO FIX THESE YOURSELF! CONTACT AN AUTHORISED TECHNICIAN IMMEDIATELY!
Common issues
The following problems are not a malfunction and in most situations will not require repairs.
Issue Possible causes
Unit does not turn on when
pressing ON/OFF button The unit has a 3-minute protection feature that prevents the unit from overloading. 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 temperature is too cold and the unit’s anti-cold function 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
COOL/HEAT mode to FAN
mode The unit may change its setting to prevent frost from forming on the unit. Once the temperature
increases, the unit will start operating in the previously selected mode again.
The set temperature has been reached, at which point the unit turns off the compressor. The unit
will continue operating when the temperature fluctuates again.
The indoor unit emits white
mist In humid regions, a large temperature difference between the room’s air and the conditioned air
can cause white mist.
Both the indoor and outdoor
units emit white mist When the unit restarts in HEAT mode after defrosting, white mist may be emitted due to moisture
generated from the defrosting process.
The indoor unit makes noises A rushing air sound may occur when the louvre resets its position.
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.
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
outdoor unit make noises Low hissing sound during operation: This is normal and is caused by refrigerant gas flowing
through both indoor and outdoor units.
Low hissing sound 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.
Squeaking sound: Normal expansion and contraction of plastic and metal parts caused by
temperature changes during operation can cause squeaking noises.