Description

Biasi BI1351118 Primary Circuit Pressure Switch – Fits Advance & Advance Plus Boilers

The Biasi BI1351118 Primary Circuit Pressure Switch is a replacement part designed to monitor and maintain correct water pressure in your central heating system. This part is essential for the safe operation of Biasi boilers and helps prevent damage caused by low pressure or water flow interruption.

This switch fits a wide range of Biasi Advance and Advance Plus boilers, including both combi and system models, and is identified by the manufacturer and GC numbers listed below.

 Compatible Biasi Boilers & GC Numbers:

• Advance 25C – GC No. 47-583-43

• Advance 25S – GC No. 41-583-33

• Advance 30C – GC No. 47-583-44

• Advance 30S – GC No. 41-583-34

• Advance 35C – GC No. 47-583-45

• Advance Plus 16S ERP – GC No. 41-583-27

• Advance Plus 25C ERP – GC No. 47-583-35

• Advance Plus 25S ERP – GC No. 41-583-28

• Advance Plus 30C ERP – GC No. 47-583-36

• Advance Plus 30S ERP – GC No. 41-583-29

• Advance Plus 35C ERP – GC No. 47-583-37

• If you’re looking for a Biasi BI1271501 Magnetic Flow Switch & Filter or any other different Biasi Diverter Valve, follow the link provided.

Frequently Asked Questions (FAQs)

Q: What does the BI1351118 pressure switch do?
A: It monitors the water pressure in your boiler’s primary heating circuit. If pressure falls below a safe level, it prevents the boiler from firing to avoid damage.

Q: Which Biasi boilers does it fit?
A: It fits multiple Advance and Advance Plus ERP boilers, including 25C, 30C, 35C, and various system models. See above for full GC compatibility list.

Q: How do I know if my pressure switch needs replacing?
A: Common signs include low pressure error codes, boiler lockouts, or no heating/hot water when the pressure is fine.