If you have arrived here, the to your air handler is tripping. There are a couple different things that can cause this. To troubleshoot, you can try to reset the if the immediately trips you should not reset it again.
Here are some common problems associated with tripping breakers:
- You could have a burnt wire or burnt component somewhere in your air handler that is touching the cabinent of the unit, causing it to trip.
- If your air handler has a heat strip, it could be shorted or grounded.
- Sometimes wires in the service disconnect or the whip going to the air handler short, causing the breaker to trip.
- There could be a component in your air handler pulling high amp draws over a period of time, causing the breaker to trip.
- The breaker itself could be going bad if it trips after running for a period of time. This is less likely to be the problem in a situation where your breaker is immediately tripping after being reset.
In all cases, a service tech should be called to diagnose what is causing the breaker to trip.
The below image is an example of a Square D breaker that has started to go bad.