Description
ATAG A200S A203C A320S A325C Flow Sensor
The ATAG boiler flow sensor replacement S4746800 helps your boiler monitor water flow correctly, so it can maintain safe and efficient heating performance. However, when the sensor becomes faulty, the boiler may show errors, respond poorly, or struggle to run as expected. Therefore, replacing it with this refurbished unit helps restore accurate flow detection, improve reliability, and support smooth day-to-day boiler operation.
Compatible Boilers
This part is compatible with the following ATAG boiler models:
A Series
- A200S – GC No. 41-310-14
- A203C – GC No. 47-310-15
- A320S – GC No. 41-310-17
- A325C – GC No. 47-310-17
- A325ECX – GC No. 47-310-18
Why Choose This Product?
This refurbished ATAG flow sensor offers a cost-effective way to restore correct boiler flow detection and reliable operation. Each unit is fully tested and quality checked before dispatch. In addition, it comes with a 12-month warranty for extra peace of mind.
Delivery and Return
Order before 1 PM for same-day dispatch with standard and next-day delivery options available. Returns are accepted within 30 days if the part is unused and in its original packaging. However, always use a qualified engineer for installation and warranty support.
FAQs
1. Which ATAG boiler models are compatible with the S4746800 flow sensor?
The S4746800 flow sensor is compatible with the following ATAG models: A200S, A203C, A320S, A325C, and A325ECX. Always check your current part number to confirm compatibility before purchase.
2. What is the function of the ATAG flow sensor?
The flow sensor monitors water flow within the boiler system. By detecting the movement of water, it ensures that heating and hot water are delivered efficiently and consistently throughout your home.
3. How long is the warranty for this flow sensor?
This flow sensor comes with a 12-month warranty that covers performance and reliability. The warranty provides peace of mind for system operation after installation.
4. Can this flow sensor be used as a replacement for a faulty sensor?
Yes, the S4746800 is designed to restore proper water flow detection in compatible ATAG boilers, helping to maintain efficient heating and hot water delivery.
5. How should I ensure proper installation of the flow sensor?
For safe and reliable installation, it is recommended to use a Gas Safe registered engineer. Proper installation ensures the sensor functions correctly and maintains boiler efficiency.











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