Honeywell Home 40003916-526 Powerhead for V8043E 5000 Series Zone Valve
A Honeywell Home replacement zone-valve powerhead used to restore actuator operation on compatible Honeywell hydronic zone valves when the correct service powerhead is required.
Key Features
- Replacement powerhead for the V8043E 5000 Series zone valve
- Supplied as a service powerhead assembly (the provided sources do not list electrical ratings, torque, or cycle timing)
Compatibility & Applications
- Listed for V8043E 5000 Series zone valve applications.
- Q&A feedback indicates this powerhead is used as an upgrade/retrofit on some earlier Honeywell zone valve bodies
- Must only be used where the manufacturer specifies this exact part number: 40003916-526.
Installation & Operation Notes
- Installation should be performed by a qualified hydronic/heating technician.
- Reference the zone valve and boiler/hydronic system service documentation for correct shutdown, wiring verification, actuator mounting, and functional checkout.
- User feedback emphasizes confirming fit before purchase; at least one review notes ordering the wrong item due to identification/visual mismatch.
Maintenance & Troubleshooting
- Common replacement scenarios in reviews include: a zone that won't open (no heat on that zone), a sticking valve/powerhead, and nuisance noise/water hammer concerns.
- Q&A and review feedback tie successful replacement to eliminating "clunking"/water hammer in some systems and restoring normal zone operation - follow the system troubleshooting procedure before replacement.
User Reviews & Q&A Summary
- Fit/upgrade themes: Many users describe it as an easy retrofit and report it works well as a replacement powerhead; multiple comments mention "backwards compatible" use on older valves.
- Performance themes: Several users report it helped resolve sticking valves and reduced or eliminated water-hammer/clunking noise.
- Ease-of-install themes: Common feedback describes a quick swap (often around 15 minutes) and appreciation for having documentation to confirm fit.
- Q&A themes: Questions focus on backward compatibility/retrofit use to reduce clunking and water hammer; one answer states it can be used on earlier-series valve bodies without replumbing and mentions included mounting screws.