Post the Mdl number of the condenser. Is condenser paired with an air handler or furnace. Post that model number as well.

Just from your statement, it does not sound like the dip switches were set up correctly. Typical oversight by installers. They should be called back to check this out. If this is the problem, takes about 10 minutes to check and correct by an installer familiar with Trane or Am Std HVAC.

IMO

furnace #AUH2B060A9V3VB . A/C # 4A7A6030 I know what this unit is capable of doing with the honeywell prestige t-stat⦠when i told the installer that i wanted the aprilaire 500 wire to the EIM (brain of t-stat) he basically told me he does not want to mess with that.. he said the furnace will turn it on when call for heat..so i know the unit is not set up right. also when i chose to run the fan on to circulate it turns the a/c on ! i can probable do it myself if anybody tells me what wires to switchâ¦â¦i prefer not calling this hvac guy ,he has no idea about this prestige t-statâ¦. thanks you

3 issues...

Comfort R setup for VS blower ramping up and down.

And if HW Prestige VP IAQ (what is mdl #?), then dehumidify on demand should be set up.

Connectivity of AprilAire 500.

I certainly wouldn't let the installing dealer off the hook due to ignorance and not caring about your concerns. You need someone familiar with your stat. Did they sell it to you?

One more thought since your lead installer was so poor, the staging of the furnace should be checked to see how this was set up. You want the staging from the thermostat not the timer on furnace control board that will always go to high stage whether needed or not.

IMO

This post was edited by tigerdunes on Sun, Jun 1, 14 at 13:15

ok tigerdunes t-stat #YTHX9421R5085
from EIM =W -----W1and w2 jumper on furnace
from EIM= Y------Y on furnace
from EIM G-----G on furnace
from EIM RH/RC/R ------to R on furnaceâ¦
from EIM C----B/C on furnace
from furnace B/C --------A/C condenser
from furnace Y----------A/C condenser
and last the aprilaire 500 (humidifier) is connected at W1 and B/C on the furnace!!!!!!! is this set up right?