Which Goodman Airhandler config do I have?

[dzenzel]

Please help me with this one.

Our configuration:
1) Compressor: Climatemaster TTS026 split unit
1) Goodman/Amana air handler. It is an AEPF303616.
1) VisionPro 8321U1006 thermostat.
1) 10KW Heat strip pre-installed in the airhandler.

The manuals for the airhandler include detailed instructions that we should follow the AEPF supplement (supplied and in my hands).

Our Heat Pump is two stage, there should be AUX and Emergency.
My understanding is that the sequence of the tstat is:
1 - Stage 1 heat
2 - Stage 2 heat
3 - Stage 2 heat plus AUX (5kw staged to 10kw, within the airhandler)
Then, on manual switch the emergency heat....(10kw with no compressor)

Can someone at least tell me if, in the supplement manual,
HeatPump, with 1 STG EMGHT 1 STG AUX Heat -OR-
Heatpump - 2 STG EMHT 1 STG AUX Heat -OR-
Heatpump - 1 STG EMHT 1 STG AUX
Is correct to compare against?

My installer spent over 5 hours today trying to figure out why my fan won't stop and the tstat won't satisfy. It appears like stage 2 heat is always called for immediately, and when the compressor stops, the fan continues (sometimes not satisfying the need, and others with the temp on stat identical to set temp). If we manually set the temp 1 or two degrees lower, the fan and compressor is off.

I think everyone agrees that the wiring is likely wrong at the airhandler. They are coming back to go over everything 1 step at a time again, but the question above is still to be answered....and it sounded like the guy just wasn't sure.

We did remove the Y1-O pre-installed jumper, so the unit is reversing properly to heat mode.

There is no definition on Dip Switch 4 (house thermostat) in the air handler..... however, the manual says it is preset ON yet on ours it is OFF.

I know, no DIY..... but guys come on and at least send some links / pointers to where these people can go to get the right information, or at least hint where they can look. Its starting to get cold....

[skippedover]

You're right about the staging of the unit, 1st, 2nd, 2nd + Aux. As for the options on the supplemental, it doesn't look like you've got the right emght/aux ht combination. What you want is 2-stage aux heat and either 1 or 2-stage emergency ht. The aux ht needs to fire when the 2nd stage HP can't keep up with the load. The unit should be sized, per Manual 'J', to handle at least 70% of the heating load. In reality, that will equate to about 90% of the load at design conditions and you'll need stage-1 of the aux heat to satisfy set-point. You may also need 2nd stage aux if the HP is sized small enough. The Manual 'J' load should tell that tale. Emergency heat is just that. It's there for an emergency, when the main unit goes down. Normally the emergency heat and aux heaters are the same, just the emergency heat fires more banks of electric coils than the aux heat. That's why you need to stage the aux heat. The only real difference between the two is that emergency heat is manually selected and is supposed to turn off the hp when selected. In contrast, the aux heat should run in conjuction with the HP. And yes, no DIY on this site. You've also got to maintain proper blower speed/airflow when the elctric heaters are on.

[dzenzel]

thank you,

and thanks to RoboTech, for the updated Goodman supplimental document. The solution to the question / issue we had was really just a close look at the low-voltage wiring (one at a time) from the tstat to the air-handler to the compressor, and understanding what one manufacturer calls stages vs another. Once we had the right schematic and a careful process, we seem to have been able to get everything OK now.