Description
Vaillant 0020254566 PCB (Now 0010047389) – Genuine Replacement PCB for EcoFit Pure, Sustain, Home & EcoTec Plus Boilers
The Vaillant 0020254566 PCB (officially updated to part number 0010047389) is the primary control board used across a wide range of Vaillant heating appliances. This genuine PCB ensures reliable ignition, burner operation, temperature regulation and system communication.
This replacement PCB is commonly used to resolve issues such as:
✔ boiler not firing
✔ display not powering
✔ intermittent heating operation
✔ fault codes related to PCB communication or electrical failure
All compatible boilers and their GC numbers are clearly listed below, grouped by series so customers can easily find the correct fit.
Compatible Boilers
EcoFit Pure – Regular Boilers (Open Vent)
EcoFit Pure 412 VU 126/6-3 OV – GC 41-694-08 (0010020400)
EcoFit Pure 415 VU 156/6-3 OV – GC 41-694-09 (0010020401)
EcoFit Pure 418 VU 186/6-3 OV – GC 41-694-10 (0010020402)
EcoFit Pure 425 VU 256/6-3 OV – GC 41-694-11 (0010020403)
EcoFit Pure 430 VU 306/6-3 OV – GC 41-694-12 (0010020404)
EcoFit Pure 435 VU 356/6-3 OV – GC 41-694-19 (0010020405)
EcoFit Pure – System Boilers
EcoFit Pure 612 System VU 126/6-3 – GC 41-694-03 (0010020395)
EcoFit Pure 615 System VU 156/6-3 – GC 41-694-04 (0010020396)
EcoFit Pure 618 System VU 186/6-3 – GC 41-694-05 (0010020397)
EcoFit Pure 630 System VU 306/6-3 – GC 41-694-07 (0010020399)
EcoFit Pure – Combi
EcoFit Pure 825 Combi VUW 256/6-3 – GC 47-044-68
EcoFit Pure 830 Combi VUW 306/6-3 – GC 47-044-74
EcoFit Pure 835 Combi VUW 356/6-3 – GC 47-044-70
Sustain Combi Range
Sustain 825 VUW 256/6-3 – GC 47-044-71
Sustain 830 VUW 306/6-3 – GC 47-044-72
Sustain 835 VUW 356/6-3 – GC 47-044-73
EcoTec Plus (2015–2019) Regular Boilers
EcoTec Plus 412 VU 126/6-5 OV – GC 41-044-71
EcoTec Plus 412 OVZ 2016–2019 – GC 41-694-13 (0010021220)
EcoTec Plus 415 VU 156/6-5 OV – GC 41-044-72
EcoTec Plus 415 OVZ 2016–2019 – GC 41-694-14 (0010021221)
EcoTec Plus 418 VU 186/6-5 OV – GC 41-044-73
EcoTec Plus 418 OVZ 2016–2019 – GC 41-694-15 (0010021222)
EcoTec Plus 424 VU 246/6-5 OV – GC 41-044-74
EcoTec Plus 424 OVZ LPG 2016–2019 – GC 41-694-18 (0020231355)
EcoTec Plus 424 OVZ NG 2016–2019 – GC 41-694-16 (0010021223)
EcoTec Plus 430 VU 306/6-5 OV – GC 41-044-75
EcoTec Plus 430 OVZ 2016–2019 – GC 41-694-17 (0010021224)
EcoTec Plus 435 VU 356/6-5 OVZ – GC 41-044-76 (0010015674)
Home Series – Combi Boilers
Home Combi 25-A – GC 47-044-62
Home Combi 30-A – GC 47-044-63
Home Combi 35-A – GC 47-044-64
Home Series – Regular Boilers
Home Regular 12-A – GC 41-044-88
Home Regular 15-A – GC 41-044-89
Home Regular 18-A – GC 41-044-90
Home Regular 25-A – GC 41-044-92
Home Regular 30-A – GC 41-044-93
Home Series – System Boilers
Home System 12-A – GC 41-044-94
Home System 15-A – GC 41-044-95
Home System 18-A – GC 41-044-96
Home System 25-A – GC 41-044-97
Please note: Before placing your order you must check your part matches the Manufacturer Part Number stated above.
For any Vaillant Diverter Valves Please Click Link :Vaillant Diverter valves
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At Heating and catering parts, we certainly strive to provide the best possible customer experience. Consequently, we understand that sometimes a product may not meet your expectations or requirements. That is why we offer a comprehensive 30-day return policy to ensure your satisfaction. Please read our full Return Policy
We appreciate you buying from our store. If your order is received by 1:00 p.m. EST (Monday–Friday), we will ship the item the same day. You can count on us to deliver quickly and safely. In other words, we take pride in our prompt and trustworthy service and will do everything we can to ensure the safe arrival of your package.
Please note that weekends are not included in our next-day delivery guarantee. Delivery for orders placed on Fridays (the next day) is on the following Monday. Select the Saturday delivery option at checkout if you’d like your purchases delivered on a weekend day.
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