Trane 4MXW6-A Owner's Manual page 17

Troubleshooting
Noise is emitted from the indoor unit.
No air is being delivered from the indoor unit
Moisture on the guide louver
When one of the following situations occur, please unplug the unit and contact a Trane dealer
immediately:
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MS-SVU42A-EN
Problems
There is harsh sound during operation
The terrible odors emitted during operation
Water is leaking in the room
Circuit breaker trips frequently
Water or other liquid is splashed into the unit
There is an abnormal heat in power supply cord and power plug.
Possible causes
* The sound of the fan or compressor relay switching on or off.
* When the defrost mode is starting or stopping, the sound of
refrigerant flow changing direction may be heard.
* In the HEAT mode, if the temperature of the indoor coil is very low,
the fan will stop for up to 3 minutes to prevent the delivery of cold air.
* In the HEAT mode, frost may accumulate on the outdoor coil due to
low outdoor temperature and/or high outdoor humidity. The unit will
automatically switch to defrost mode, and the indoor unit will stop
blowing air for approximately 8-10 minutes. During the defrost cycle,
moisture may flow from the outdoor unit and steam may be observed.
* In the dehumidifying mode, the indoor fan occasionally stops to
avoid condensing water to be re-vaporized.
If the unit is running for extended periods of time in high humidity
conditions, moisture may accumulate on the guide louver.
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