Description
Baxi 5121025 Electronic Control PCB – Refurbished Genuine Boiler Control Board
The Baxi 100/2 HE electronic control PCB manages and controls all key boiler functions for safe operation. This refurbished PCB restores stable performance and helps resolve common faults such as no heating or ignition issues. The part number 5121025 ensures accurate compatibility with selected Baxi HE boiler models. Each unit is refurbished, tested, and prepared for reliable use.
Compatible Boilers
Baxi 100/2 HE Series
- 100/2 HE (GC No. 41-075-34)
Baxi HE Plus Combi Series
- Combi 100 HE Plus (GC No. 47-075-15)
- Combi 133 HE Plus (GC No. 47-075-14)
- Combi 80 HE Plus (GC No. 47-075-16)
Baxi HE Plus Heat Only Series
- 50/2 HE Plus (GC No. 41-077-41)
- 80/2 HE Plus (GC No. 41-077-42)
- 15 HE (GC No. 41-077-90)
- 24 HE (GC No. 41-077-91)
Baxi Solo HE Series
- Solo 12 HE (GC No. 41-075-50)
- Solo 12 HE A (GC No. 41-075-65)
- Solo 15 HE (GC No. 41-075-46)
- Solo 15 HE A (GC No. 41-075-66)
- Solo 18 HE (GC No. 41-075-51)
- Solo 18 HE A (GC No. 41-075-67)
- Solo 24 HE (GC No. 41-075-45)
- Solo 24 HE A (GC No. 41-075-68)
- Solo 30 HE (GC No. 41-075-44)
- Solo 30 HE A (GC No. 41-075-69)
Baxi Solo IE Series
- Solo 12 IE (GC No. 5133389)
- Solo 15 IE (GC No. 5113390)
- Solo 18 IE (GC No. 5093391)
- Solo 24 IE (GC No. 5073392)
- Solo 30 IE (GC No. 5053393)
Baxi System Boilers
- System 100 HE Plus (GC No. 41-075-43)
If you’re looking for a Baxi Combi 105E PCB 5112380 and 248074 or any other different Baxi PCB, follow the link provided.
Why Choose This Product?
This Baxi 100/2 HE electronic control PCB provides a reliable and cost-effective solution for boiler faults. It helps restore full system control and improves heating performance. Each refurbished unit undergoes testing to ensure consistent operation. It offers a practical way to repair your boiler without the cost of a new part. This solution supports long-term performance and dependable heating.
Delivery and Return
All orders placed before 1 PM are dispatched on the same working day. You can choose standard delivery or upgrade to next day shipping at checkout. Returns are accepted within 30 days if the item remains in its original condition. Always use a Gas Safe registered engineer for installation and repairs to ensure safe operation.
Frequently Asked Questions (FAQs)
1. What does the Baxi 100/2 HE electronic control PCB do?
It controls the main boiler functions, including heating, ignition, and system safety operations.
2. Which part number should I use for my Baxi boiler?
You should use part number 5121025 for compatibility with Baxi 100/2 HE and related models.
3. Can this PCB fix a boiler with no heating or hot water?
Yes, replacing a faulty PCB often restores heating and hot water control.
4. Is this PCB refurbished or new?
This unit is refurbished, fully tested, and checked for reliable performance.
5. How do I know if this PCB fits my boiler?
Check your boiler model and GC number against the compatibility list provided.


















