Air Conditioner Troubleshooting

Trane air conditioner units are reliable and top of the line, however, there may still come a time where some maintenance and troubleshooting is in order. Refer to our AC troubleshooting guide and call your local Trane Comfort Specialist™ if you think there’s a serious problem with your AC unit.

Disclaimer: The following information is for educational purposes only. Tampering with your system may void your warranty. If you have any questions about your system, call a Trane Comfort Specialist™.
Before you call for service, check the following:
No cold air
Possible cause Your outdoor coil may be blocked.
Recommended Action Keep your unit clear of any leaves or debris.
Possible cause The filters are clogged or dirty.
Recommended Action Clean or replace the filters. Consult your local Trane Comfort Specialist™ if you are unsure where the filters are located.
Possible cause Your thermostat controls may be set incorrectly.
Recommended Action Try turning the thermostat off and then on again. Reset to the desired temperature and see if that helps.
No air movement
Possible cause The air handler might not be functioning due to a blown fuse or open circuit breaker.
Recommended Action Reset circuit breaker or replace burned-out fuse.
Possible cause POSSIBLE CAUSE Air may not be circulating freely in the system.
Recommended Action Check return grills for blockages.
System running constantly
Possible cause Your thermostat could be set too high.
Recommended Action Reset your thermostat, then adjust the temperature to a comfortable level.
The drain pan is overflowing
Possible cause The drain pan below your interior AC unit collects condensation while an electric pump is supposed to move this condensation to a nearby drainage pipe. There might be a problem with the pipe and/or the pump.
Recommended Action Your electric pump which moves the water to the nearby drainage pipe might have come unplugged. Check to be sure the pump is plugged in correctly and look for any observable kinks or blocks in the drainage line. Please contact your local Trane Comfort Specialist™ if you need assistance.

Need Emergency Service?

If this is an emergency, then please contact local Trane Comfort Specialist™ for assistance regarding your air conditioner.

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