Baxi
Baxi 5121025 Potterton Printed Circuit Board
At a glance
- Part type: Printed circuit board enclosure kit
- Also known as BAXI5121025
Showing prices
£168.00
£140.00 ex. VAT · VAT at 20%
In stock
Cut-off passed — dispatches next working day
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Baxi 5121025 is a printed circuit board supplied as an enclosure kit. It is the electronic control board for a Baxi heating appliance, carrying the circuitry that manages ignition sequencing, temperature regulation, pump and fan control, and the safety interlocks the appliance depends on. The board sits inside a protective enclosure that shields it from dust and moisture within the appliance casing.
Signs this part needs replacing
- The appliance does not respond to a call for heat or hot water
- Repeated lockouts or fault codes that clear only after the power is cycled
- A blank, dim or flickering display on the control panel
- The pump or fan runs continuously without the appliance moving into an ignition sequence
- Erratic or intermittent operation following a power surge, or after moisture has reached the board
Before you order
- Check the appliance model and GC number against the compatibility list to confirm the board is the correct one for the unit
- Read the part number from the existing board before removal where the label is still legible
- Allow the appliance to be fully isolated from the electrical supply before the enclosure is opened
Mechanical
| Part type | Printed circuit board enclosure kit |
|---|
Compliance
| Manufacturer part number (MPN) | 5121025 |
|---|---|
| GC number | H13-183 |
| Commodity code | 8537 10 00 00 |
| GPC classification | Electronic Circuit Accessories |
| Alternative numbers | 5039177670490, BAXI5121025, 118181231, 252220822586 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI 100/2HE PLUS | 41-075-34 | 41-075-34 | — | — |
| BAXI 100HE PLUS SYSTEM | 41-075-43 | 41-075-43 | — | — |
| BAXI 50/2 HE PLUS | 41-077-41 | 41-077-41 | — | — |
| BAXI 80/2 HE PLUS | 41-077-42 | 41-077-42 | — | — |
| BAXI COMBI 100 HE PLUS | 47-075-15 | 47-075-15 | — | — |
| BAXI COMBI 133HE PLUS | 47-075-14 | 47-075-14 | — | — |
| BAXI COMBI 80HE PLUS | 47-075-16 | 47-075-16 | — | — |
| BAXI PLATINUM 15 HE | 41-077-90 | 41-077-90 | — | — |
| BAXI PLATINUM 24 HE | 41-077-91 | 41-077-91 | — | — |
| BAXI SOLO 12 HE | 41-075-50 | 41-075-50 | — | — |
Showing 10 of 62 compatible appliances.
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
manual
BAXI appliance manual — 100/2HE PLUS (GC 41-075-34), 50/2 HE PLUS (GC 41-077-41), 80/2 HE PLUS (GC 41-077-42)
manualmanualBAXI appliance manual — 100HE PLUS SYSTEM (GC 41-075-43)
manualmanualBAXI appliance manual — COMBI 100 HE PLUS (GC 47-075-15), COMBI 133HE PLUS (GC 47-075-14), COMBI 80HE PLUS (GC 47-075-16)
manualmanualBAXI appliance manual — PLATINUM 24 HE (GC 41-077-91)
manualmanualBAXI appliance manual — SOLO 12 HE (GC 41-075-50), SOLO 15 HE (GC 41-075-46), SOLO 18 HE (GC 41-075-51), SOLO 24 HE (GC 41-075-45), SOLO 30 HE (GC 41-075-44)
manualmanualBAXI appliance manual — SOLO 12HE A (GC 41-075-65), SOLO 15HE A (GC 41-075-66), SOLO 18HE A (GC 41-075-67), SOLO 24HE A (GC 41-075-68), SOLO 30HE A (GC 41-075-69)
manualmanualPOTTERTON appliance manual — BG PRECISION HE (GC 41-592-33)
manualmanualPOTTERTON appliance manual — GOLD 30 FSB (GC 41-592-32)
manualmanualPOTTERTON appliance manual — GOLD H 15 (GC 41-592-12), GOLD H 18 (GC 41-592-13), GOLD H 24 (GC 41-592-14)
manualmanualPOTTERTON appliance manual — GOLD HEAT ErP 15 SERIAL No. ENDING AC (GC 41-592-51), GOLD HEAT ErP 18 SERIAL No. ENDING AC (GC 41-592-52), GOLD HEAT ErP 18 SERIAL No. ENDING BC (GC 41-592-52), GOLD HEAT ErP 24 SERIAL No. ENDING AC (GC 41-592-53), GOLD HEAT ErP 24 SERIAL No. ENDING BC (GC 41-592-53)
manualmanualPOTTERTON appliance manual — PROMAX 30 HE FSB (GC 41-595-39)
manualmanualPOTTERTON appliance manual — PROMAX PLUS 15/2 HE (GC 41-605-52), PROMAX PLUS 24/2 HE (GC 41-601-17), PROMAX PLUS 30 HE (GC 41-601-22)
manualmanualPOTTERTON appliance manual — PROMAX SL HEAT ErP 12 - SERIAL No. ENDING AC (GC 41-592-34), PROMAX SL HEAT ErP 12 - SERIAL No. ENDING BC (GC 41-592-34), PROMAX SL HEAT ErP 15 - SERIAL No. ENDING AC (GC 41-592-35), PROMAX SL HEAT ErP 15 - SERIAL No. ENDING BC (GC 41-592-35), PROMAX SL HEAT ErP 18 - SERIAL No. ENDING AC (GC 41-592-36), PROMAX SL HEAT ErP 18 - SERIAL No. ENDING BC (GC 41-592-36), PROMAX SL HEAT ErP 24 - SERIAL No. ENDING AC (GC 41-592-37), PROMAX SL HEAT ErP 24 - SERIAL No. ENDING BC (GC 41-592-37), PROMAX SL HEAT ErP 30 (GC 41-592-38)
manualmanualPOTTERTON appliance manual — PROMAX SL PLUS 12 HE (GC 41-591-79), PROMAX SL PLUS 15 HE (GC 41-591-87), PROMAX SL PLUS 18 HE (GC 41-591-80), PROMAX SL PLUS 24 HE (GC 41-591-88), PROMAX SL PLUS 30 HE (GC 41-591-89)
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