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that is a thermal limit lockout, is the filter clean and is the main blower running fine?
Check the rollouts on the unit one of them is opening due to a overheating issue.
When that is happening you will need to replace the control board to fix it, that happens a lot.
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You can get it online or from a local supplier.
If the blower is not running that is why that is happening, can you hook up Black and white and see if the blower runs?
The blower may be bad, it should have come on and not have blown the breaker
Does the motor hum if you set the thermostat to FAN ON and does the blower spin freely?