Malfunctions due to wear and tear usually occur with “veterans” of climate technology, but they mainly happen because of a non-compliance with the maintenance schedule. Breakdowns of air conditioners related to mechanic parts, if not fixed on time, always result in the failure of the compressor, which is very sensitive to disturbances in the operating mode.
|Indoor unit does not give cool air immediately when unit starts.||Compressor restarts after approximately three minutes to protect itself. On compressor restarting units starts to give cool air again.|
|Unusual odor blowing from outlet when unit is started.||Open the door or window for 2 minutes and run the AC in Fan mode to allow fresh air inside the room. This helps to remove odors from inside the room.|
|Sound of water ow during operation.||This is caused by refrigerant owing inside the unit|
|Formation of mist while cooling||Room air is cooled quickly by cold air ow which looks like fog|
|Creaking noise during start or stop||Deformation of plastic because of temperature change.|
|Unit does not operate||Check electrical system connections, cords and fuses.
Check if power supply is within 10% of rated supply.
|Decreased cooling eciency||Check 'set temperature' .
Check for obstructions in air inlet and outlet.
Check air lters for dirt.
Check indoor fan speed.
Check any other openings in the room
|Remote control does not work correctly||Check e ective distance to indoor unit.
Check low battery error indication on remote display.
Trane air conditioner troubleshooting
|Air conditioner does not run upon immediately restart after a stop.||To protect the air conditioner upon immediate restart after a stop, the microcomputer controller will delay the unit for 3 minutes before the air conditioner will run.|
|Air conditioner blows out bad smell when it is initially started|| The air conditioner itself has no bad smell Solution: Clean the air filter
* If the problem persists after cleaning the filters, the air conditioner should be cleaned and serviced by an Authorized Trane dealer)
|You may hear "Water Flowing" noise when the air conditioner is running||When the air conditioner is started, or the compressor is started or stopped during running or the air conditioner is stopped, sometimes you may hear the flowing sound of refrigerant.|
|Sometimes a thin fog will flow out of the outlet when air conditioner is running under cooling mode.||This might occur when indoor temperature and humidity are high. This is because the indoor air is quickly cooled down.
After a period of time, the fog will disappear with the decrease of indoor temperature and humidity.
|You may hear a slight crack when the air conditioner is started or stopped||This is the sound caused by expansion of plastic panel or other parts due to the change of temperature|
|The unit can not run||* Has the power been shut down?
* Does power plug come loose from the socket?
* Is the circuit protection device tripped off or not?
* Is voltage higher or lower? (Tested by professionals)
* Is the Timer correctly used?
|Cooling(Heating) efficiency is not good||* Is Temp. setting suitable?
* Were inlet and outlet vents obstructed?
* Is there too much dust accumulated and obstructed the filter?
* Are the windows and doors closed?
* Did Fan speed set at low speed?
* Is there any heat sources in the room?
|Wireless remote control is not functioning||* Is it in its receiving range? Or obstructed?
* Check and/or replace the batteries.
* The wireless remote control is damaged
|Water leakage in the room||* The air humidity is on the high side
* Water overflowing due to blocked drain tube. Call your Authorized Trane dealer. * The connection position of indoor unit drainage pipe is loose.
|Water leakage in outdoor unit||* When the unit is running in the COOL mode, moisture from the indoor space will be discharged from the drain pipe.
* When the unit is running in the HEAT mode, moisture may drip from the outdoor coil.
* When the unit is running in Auto Defrost mode, frost that has formed on the outdoor coil will be thawed
|Noise is emitted from the indoor unit||* 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
|No air is being delivered from the indoor unit||* 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.
|Moisture on the guide louver||If the unit is running for extended periods of time in high humidity conditions, moisture may accumulate on the guide louver|
Trane air conditioner error codes
|Error codes||Error Description||Error Displayed on
|0x01||EEPROM communication error||Error 01 EEPROM communication error|
|0x02||Compressor Failure error or refrigerant leakage||Error 02 OutDoor Unit Error|
|0x03||Filter choke Error||Error 03 Filter choke error - Clean the fiter|
|0x04||Indoor Room temperature sensor error||Error 04 Room temp sensor failure|
|0x06||Indoor coil temperature sensor error||Error 06 Indoor temp sensor failure|
|0x08||Communication error||Error 08 Communication error|
|0x09||Low battery||Error 09 Low battery please change the battery|
|0x0A||Input Power Error||Error 10 IDU Input Power Problem|
|0x0B||IDU Error - Fan failure||Error 11 IDU Error - Fan Failure|
|0x0D||Communication error (IDU to ODU)||Error 13: Communication error (IDU to ODU)|
|0x0E||Outdoor discharge temperature sensor error||Error 14: Outdoor discharge temperature sensor error|
|0x0F||Outdoor EEPROM parameter reading error||Error 15 : Outdoor EEPROM parameter reading error|
|0x13||IPM module failure||Error 19: IPM module failure|
|0x14||High/ Low Voltage protection||Error 20 :High/Low Voltage protection|
|0x17||Compressor position protection||Error 23: Compressor position protection|
|0x1A||Outdoor Condenser coil temperature sensor error||Error 26: Outdoor Condenser coil temperature error|
|0x1E||Outdoor temperature sensor error||Error 30: Outdoor Temperature sensor error|
|-||Remote not in network range||Network not found|
|-||Connect to network (if user did factory reset on the remote)||Connect to network|
|-||AC switched OFF|
(main power OFF)
|Set point temp +
Infrared activated +
No network found
|Lock with AC|
|-||Lock not installed||Night latch failed
Lock not installed
|-||Night latch not operating||Night latch failed
Please check your lock
|-||Door Open||Night latch failed
Trane Xl1200, XR12 air conditioner troubleshooting
|Insufficient heating or cooling||a. dirty filters||a. clean or replace|
|b. air not circulating freely||b. check supply registers and return grills for blockage|
|c. blocked outdoor coil||c. clear away leaves or other debris|
|Failure to operate||a. power off||a. make sure main switch is in ON position|
|b. open circuit breaker or burned-out fuses||b. reset circuit breaker, or replace burned-out fuses|
|c. improperly adjusted thermostat||c. check setting, adjust thermostat|
|Blue auxiliary heat light on||When outdoor temperature falls, intermittent lighting is normal||Monitor light. If it stays on continuously when above 30F, or if it comes on when 50F outdoors, call for service.|
|No Heating or Cooling - Blower does not operate||Blower door removed or ajar||Close door securely to restore power to blower|
|Unusual Noise||Call your local servicer|