air handler fan speed

BOB · 2014-03-05T21:13:18+00:00

I just had a dx geothermal system installed with a trane tam7aoc48h41sc airhandler. Tech who hooked system up lives 6 or so hrs away, so after 6 leaks & a2nd tank of refrigerant he was more inerested in going home than any set up.When blower came on it was 100%. I new it wasn't right so after 2 weeks oftrying to get someone back to check it, I looked through service facts that camewith tam7 and changed a dip switch setting so when blower came on it ramped up &back down. This was enough better that with comparable temperatures I used half of kilowatthrs 2nd 2 weeks than 1st 2 weeks, but I still think it can do better. When heatcomes on & blower is starting slow, air out of registers is quite warm. Asblower ramps up air cools down.when blower slows down before it quits, air iswarmer again. It only makes sense if blower didn't get up to 100%, air comingout of registers would be warmer longer. My question is how can I set dip switches so blower only goes up to 50% or so.And I'd like to know if this could be a problem? Thank you.