Just took out a solar based home built heatpump system and opted for a Trane 20i 5 ton communicating system yesterday.

I'm having trouble with the fan running all the time and the Trane speccialist can't get back until next week. The Comfortlink II thermostat seems installed correctly and programmed OK. The system holds the heat setting perfectly, fan programmed to Auto, but the fan runs at very high speed for 6 minutes then very slow speed for 6 minutes and never completely shuts off.

Which forum is best for this post??

Thanks