Beam Circuit Board for Alliance ECS II Central Vacuum (Assy P3) CMPS-QDZ 5 inch roller that also

5 inch roller that also serves the Riccar R20P

and PowerGroom 68C77 uprights

A motor suppressor can fail or degrade over time

Fits: Panasonic MC-E417

Beam Circuit Board for Alliance ECS II Central Vacuum (Assy P3) CMPS-QDZ 5 inch roller that alsoThis 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