Early boxes   P/N 1125-27-50 s/N 27, applied to Astra S/N 079.

1. The upper FSECU plug , C1,  directly conflicts a small bracket in all early sn Astras .

90 degree backshell desirable. Long cables desirable.  Tough.  Make do with this:

2. All early boxes did not include RESET DELAY 10  seconds switch.

Here is what is needed:

3.  NO MOTION DETETECT defeat. Print above

4. SLAT OUT light.  Here is the work around on later boxes.

video of early repair:

PDF of early Flap slat repair SHOP NOTES ONLY!  not definitive at all;

FlapSlatRepairShopNotes

WORSHIPPASTOR@

Sensi ac controllers

Install SENSI app on your phone

NORMAL SETUP. Install Batteries. Take a picture of the back of the unit, and the newly wired wall mount.

1st level troubleshooting: Remove batteries for 2 min.   Install NEW batteries. Unit is now FACTORY RESET.  Wait 10 min and see what happens.

2nd level troubleshooting:

If lock symbol persists, walk out of range of the WIFI, then <UPARROW>And <MENU> at the same time hold for 10 seconds . Screen will blank. Unit is now  unlocked.

3rd level:

walk out of range of WIFI. Press <UPARROW>And<DOWNARROW>And<FAN> for 30 seconds.  Unit is now HARD RESET.

The Honeywell helpline was surprisingly helpful.

from redit:

Until I stumbled upon this link. Sheesh, took over a week, but I am fbcjUSTINPYEAR posting about it here again, just so it can help others out as much as I can.

PRESS and hold UP, DOWN, and FAN buttons until you see the LCD blank out, THEN try to Add it to HomeKit again, and IT WILL ACTUALLY WORK!

fbcjUSTINPYEAR