Troubleshooting - Trane MCXE Series Owner's Manual & Installation Manual

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 odor
• 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 AUTHORIZED SERVICE PROVIDER IMMEDIATELY!
Common Issues
The following problems are not a malfunction and in most situations will not require repairs.
Issue
Unit does not turn on
when pressing ON/OFF
button
The unit changes from
COOL mode to FAN mode
The indoor unit emits
white mist
The indoor unit makes
noises
Both the indoor unit and
outdoor unit make noises
The outdoor unit makes
noises
Dust is emitted from either
the indoor or outdoor unit
The unit emits a
bad odor
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Possible Causes
•
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.
•
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 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.
•
In humid regions, a large temperature difference between the room's air and the conditioned
air can cause white mist.
•
A rushing air sound may occur when the louver 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.
•
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.
•
The unit will make different sounds based on its current operating mode.
•
The unit may accumulate dust during extended periods of non-use, which will be emitted
when the unit is turned on. This can be mitigated by covering the unit during long periods
of inactivity.
•
The unit may absorb odors from the environment (such as furniture, cooking, cigarettes, etc.)
which will be emitted during operations.
•
MCXE-IOM