I have a Carrier heatpump system.

The other week, I noticed the interior blower fan would not always coming on when the heatpump started. I was thinking it was a relay on the inside, however, my internet search provided no conclusive answers. Called a local HVAC company. The tech came out and identified the following 1. thermostat was bad because the fan would not turn on when the fan switched was switched to "on", 2. The outside capacitor needed replacing beacause it was bloated. 3. The interior fan needed replacing because it was dirty (and most likely the cause of the intermittent operation).

Due to the cost provided by the tech to fix everything, I continued my research and decided to replace the capacitor for the interior blower fan. I have not done anything else yet.

Now the interior blower fan comes on with the heat-pump, however the interior blower fan shuts off after maybe two minutes, and the heatpump continues to run for a few more minutes. I have not yet replaced the thermostat or the outside capacitor.

Thoughts?