Beam Circuit Board for Alliance ECS II Central Vacuum (Assy P3) CMPS-QDZ A new board restores full

A new board restores full

A fresh combo tool restores strong suction on upholstery and a gentle brush for dusting

A sound cap clicks back into position and holds everything where it belongs

and PowerGroom 68C77 uprights

Fits: Sharp EC-TU4810

Beam Circuit Board for Alliance ECS II Central Vacuum (Assy P3) CMPS-QDZ A new board restores fullThis is a genuine Beam circuit board (Part #100639A), the control board assembly used in the Beam Alliance ECS II central vacuum power unit. It is supplied as assembly P3. This board is the electronic brain of the Alliance ECS II system. It manages the unit's switching and power circuitry, turning the suction motor on and off in response to the low voltage signal from your wall inlet valves. A failed board can leave the unit dead, cause it to run