What thermostat is connected to it.

 

That manual looks a little thin, I'll see if I can reach one of our installers today.
Luck, dan

 

He's got something wired wrong.
Most likely, the thermostat is not telling the board to run cooling.
Cont fan takes a secondary role, and is dropped on a call for anything else.

Probably wired just like they used to in the old days, before there was a cooling terminal on the board.

 

I have a White Rogers 1F-97. It's just a single stage cooling and single stage heating thermostat I got when I worked there. There's only a W and Y terminal for heating and cooling on it.

It's just wired as a 4 wire thermostat at the furnace controller board. Other than the installer jumped Y1 and Y2 together. He told me if I took the jumper out and left the t-stat connect to Y1 that it'd run in 2 stage mode.

If that the case since I only have one relay to call for cooling it'll always run in the low stage. This is ok with me because according to the manual if I set S3-1 and S3-2 to on it'll give me 1170 CFM which is more than I'm getting now, but doesn't exceed the 1200 CFM recommendation of the 3 ton coil using 400 CFM per ton as a basis.

The reason I want a little more fan speed is to get a little be better circulation in my rooms. I have some hot spots in the rooms.

Also I figured if I could get the ramping profile to work, I'd try letting it run profile C where's it's on for 7.5 minutes at 85% fan speed to do the dehumidification phase, then let it kick up to 100% fan to do the cooling phase.

The fact that it'll never call for 2nd stage on the controller is ok with me.

The installer did talk to the rep and the rep said the compressor just runs the same weather the board is calling for 1st or 2nd stage cooling.

I only see 2 wires going to the outside unit so I'm guessing that's the call for cooling. I do not have a communicating thermostat there is no communication line between the outside unit and the controller board on the furnace other than the 2 wires that are tapped off the thermostat.

I agree somethings not wired right. I don't know if they changed something when they put the new one in or if they just used what was in place.

Thanks for all your help guys!

Steve

 

OK I did some checking at the unit based on something hvacvegas said. I got to thinking that if G was coming from the t-stat then it would run in continuous fan mode instead of the variable speed mode. As a quick check I pulled the G wire off the furnace control and fired it up. The compressor came on but after 30 seconds, I got no blower fan. Shut it off shortly after the 30 seconds and let it sit for about 5 minutes before hooking up the G wire and turning it back on. This time I got fan along with the cooling like I did before and it's still running in continuous fan mode (as I expected it would). I also cycle down the power, then set the dip switches, then power it back up. It goes through it's check with relays clicking and then flashed between 10 and F. (1000 CFM and Continuous Fan).

The controller board is a PCBKF104

Dip switch settings are:

S3
1-ON (1 and 2 Cool selection D, low stage 1170, high stage 1800) *No connection on Y2 only Y1, should never run 2nd stage.
2-ON
3-OFF (3 and 4 Adjust Taps, +5%, 1170 + 58 = 1228) *Trim is enabled on switch 5-2 below.
4-OFF

S4
1-ON (1 and 2, Profile Selection, 50% blower speed for 30 seconds, then 100% blower speed for rest of cycle, w/ 1 min run cycle after compressor shuts off)
2-OFF
3-ON (3 and 4, Heating Selection B, Low1120, High 1600)
4-OFF

S5
1-OFF (Dehum, Disabled)
2-ON (Trim, Enabled)
3-ON (3 and 4, Continuous Fan, 50% of 2000 = 1000)
4-OFF

S1
1-ON (1 and 2, Heating Off Delay, 120 seconds)
2-OFF
3-ON (3 and 4, Thermostat Setup, 2 stage stat)
4-ON

This was taken from the manual that came with the unit. Again, I've only got it configured to run low stage cooling. When it's working I would expect to see C1 on the display instead of F.

Thanks,

Steve

 

It's clearly not wired correctly.

I would recommend the installer come back and fix the issue, or hire another tech.

Honestly, this furnace is a pretty easy installation. Board isn't new, been out for years. He should have ran into this before.

 

The contractor came out today and replaced the furnace control board and the Goodman service tech he was on the phone with told him to jump Y1-Y2-O together like they used to be. After replacing the board, the system ran on the 2nd stage cooling mode and I finally got 1200 CFM through the coil according to the indicator on the board which now flashes C2/12.

Thanks for all the help guys!

Steve