Gas and Oil Home Heating Furnaces - Is my furnace wired correct?

I have a two week old Heil furnace and AC. The ladder diagram shows that a separate fan speed, the fan has four speed options, can be chosen for heat and AC. The problem is I get the same speed for heat, AC, or manual fan. I looked at the circuit board mounted to the fan and noticed that there is no connection to the Y terminal. I the followed the wire from the thermostat Y terminal and it goes directly to the compressor with a return wire to the C terminal on the circuit board in the furnace. I phoned the contractor and all I got was that I would void the warranty if I played with the furnace and I would be charged a service call if they found nothing wrong.
I hope this isn't a repeat of my question. I tried to post it yesterday but I think it did not go through.

If you're getting the same speed for heating and cooling it don't sound right. The yellow going out to the condensor shouldn't matter. On the circuit board what does Green go to? Normally when you switch to Cool with the fan in auto the t-stat closes contact to Y and G. The fan on position is G also.

Being only 2 weeks old they should come look at it if you have a question. Did you speak to the service manager or owner?

The wire from the G terminal of the thermostat is connected to the G terminal in the furnace. I am aware of how the manual fan and auto (cool) fan is suppose to work via the thermostat. My problem is that I only get the speed selected for heat. I've tested this by choosing full high for cool and full low for heat. All I got was low.
I took a close look at the Y terminal on the furnace circuit board and it does connect to the circuitry of the board. I suspect that the reason for this is that when manual fan is selected the fan would run at the slower (heat) speed, controlled by the furnace board G terminal, and when cooling is called for, 24 volts is supposed to be applied to the furnace board Y terminal switching the fan over to the higher (cool) speed. I've thought about running a wire from the furnace Y terminal to the Y terminal of the thermostat to try it but decided to get some advice first.
As to the contractor, they haven't been very helpful. I'm still waiting for them to bring back my 50ft extension cord they borrowed and took with them.

I answered my own question. Assuming that no harm could be done by running a second wire from the Y terminal in the thermostat to the Y terminal in the furnace with the original wire still going to the compressor, I did just that. Now when the thermostat calls for cooling, the fan runs at the higher speed selected for cool. If I have the fan on manual it runs at the slower speed chosen for heat until the thermostat calls for cooling. Nice feature. The manual fan on the old unit always ran at the cool speed.

Just out of the box here. But could your tstat need a jumper in it ??? To power the fan relay. Some do.Are you sure of the colors of the wires from up to down?

ED ;)

No, I don't think so. The only thermostat options I saw involved the cutting of jumpers. I remember when reading the manual that the options did not concern my setup. Actually the fan works fine now that I added that extra wire, heat(low) speed when on manual fan and automatically switching to a higher speed when cooling is called for. It is interesting in that there is a timer involved as the fan is switched to the higher speed about 5 seconds after the compressor is turned on.
It was a bit of a circus the day they installed my furnace. They had no extension cords and had to borrow mine. Still haven't got it back. They forgot some parts and one of them had to go back for them. One of them had to leave for a union meeting and took the pump with him. When they started the new furnace in heat mode the exhaust fan made a loud noise. Somehow a wire nut had gotten into it. Then, somehow, my phones were knocked out. It was late when they finished and maybe they forgot to add the extra wire.
I'm going to take this opportunity to ask another question. On the furnace circuit board is an unused connection marked EAC. Could this be for the electronic air cleaner so that it would only run when the fan is on. The way my electronic air cleaner is wired now, it's on all the time. Fan or no fan.

The EAC connection is for the EAC. These guys were not all named Darryl or Melvin were they? :D If it's on all the time leave the fan on all the time then when the condensor kicks in the fan will speed up. You'll always be cleaning your air. Be sure to keep those washable prefilters clean and relace them every few years.

Thanks for the information. I think I may wire the EAC to the furnace board because we only run the fan on manual when we're home.
The contactor was recomended to me by someone who use to work for them. Haven't had a chance to talked to him since the furnace was installed but when I do I will ask him why he works somewhere else,for a hospital group, now.