Central Vac LED Button Control Module for Honeywell H750A, ECV5400, ZCV910A

The lighted button on a handful of Honeywell central vacuum power units sits on top of a small circuit board rather than being a plain switch. That board carries the low-voltage logic that reads signals from wall inlets and remote keypads, closes the motor relay, and drives the LED so the button glows while the unit is powered and idle.

This module, part 100701, is sold by parts retailers as an LED button control module for Honeywell, Eureka, and Beam built power units, and the title ties it to the Honeywell H750A, ECV5400, and ZCV910A, so confirm your model against your unit's parts diagram before ordering. A light that will not illuminate, a press that does nothing, or start behavior that comes and goes points to this board rather than the motor.

• Fits: Honeywell H750A, ECV5400, ZCV910A per title (verify on your unit's parts diagram)
• Sold as: LED button control module for Honeywell, Eureka, and Beam platforms
• Function: Lighted button plus low-voltage motor switching
• Symptoms it addresses: Dark indicator light, unresponsive button, intermittent start

Rule out the simple causes before ordering a board: a tripped breaker, a loose wire at the terminal block, or a blown inline fuse can produce the same dead-light, no-start symptom as a failed board. Confirming those first means the replacement actually fixes the fault instead of masking a wiring problem that shows up again later.

The LED shares its low-voltage circuit with the switching logic on this board, so a dark light is a fair early sign of a failed board, since there is no separate bulb behind it to burn out on its own. Keep the old board on hand until the new one is confirmed working, in case a wiring fault elsewhere turns out to be the actual cause. Listed under SKU 100701.