How do i wire a h w r784 that replaced a r7184a 1026

Is there power to the unit?

The 1026 has a bakelite shell. It is held in place by two tabs that snap over the metal frame. The shell is very fragile. However if you aren't a qualified tech with this sort of thing this tranformer is very inexpensive, rather than take a chance, I would just dump it. You can usually find them at shows for about five bucks.

U 1026 or P1026

Go online and google download drivers for PC -1026 you should find smething

If you are talking about the HDD inside your computer, Then it is located under your keyboard,Close to the bottom on the right hand side.

What make and model of AC, as well as Make, model of thermostat ? Need that info for proper diagram.

Should go to C terminal. B and O are only used if you have a heat pump system. If you have a voltage tester you should have 24 volts between the wire connected to R and the blue wire (common)

https://www.wedclix.com/wp-content/uploads/2017/12/aept-aepf-thermostat-control-wiring-central-air-and-heat-diagram.jpg
Let me know if this is the diagram u looking at?

I would check your venting and also replace your cycle thermostat (4 wire therm) mounted right next to the thermal fuse. If you have a clear vent and new cycle therm this will take care of the problem. part number on the cycle therm is 3387134

Good luck _MJ_

use the h an the 845 1 zone to the h an 1 zone to the 845