Baxi
Baxi 5118397 Potterton & Main Control Knob
Baxi 5118397 control knob, a replacement button and knob component for Baxi heating appliances, supplied under part number 5118397.
At a glance
- Part type: Buttons & Knobs
- Also known as 5039177664147, BAXI5118397, 254889043194, N2535
Showing prices
£36.00
£30.00 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 5118397 is a control knob manufactured by Baxi for use within their heating appliances. It forms part of the user control interface, allowing temperature or function settings to be adjusted at the fascia. As a serviceable component it is replaced when the original knob becomes damaged, loose or unresponsive.
Signs this part needs replacing
- The knob turns freely without changing the setting, indicating a stripped or cracked spline.
- The knob has cracked, split or come away from the spindle.
- The control feels loose, wobbly or fails to hold its position.
- The moulded marker or grip surface has worn away, making the setting hard to read.
- The knob has been lost or pulled off during cleaning or servicing.
Before you order
- Check the appliance model and GC number against the compatibility list to confirm the correct knob for your unit.
- Compare the old knob's spindle fitting and diameter with the replacement before removing it fully.
- Inspect the spindle and fascia for damage, as a worn shaft can cause a new knob to fail in the same way.
Mechanical
| Part type | Buttons & Knobs |
|---|---|
| Length | 0.1mm |
| Width | 0.1mm |
| Depth | 0.1mm |
Compliance
| Manufacturer part number (MPN) | 5118397 |
|---|---|
| GC number | E94-430 |
| Commodity code | 8403 90 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 5039177664147, BAXI5118397, 254889043194, N2535 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI DUO-TEC 24 HE | 47-075-23 | 47-075-23 | — | — |
| BAXI DUO-TEC 28 HE | 47-075-25 | 47-075-25 | — | — |
| BAXI DUO-TEC 28 HE LPG | 47-075-39 | 47-075-39 | — | — |
| BAXI DUO-TEC 33 HE | 47-075-24 | 47-075-24 | — | — |
| BAXI DUO-TEC 40 HE | 47-075-26 | 47-075-26 | — | — |
| BAXI DUO-TEC COMBI 24 HE A (AFTER SERIAL No. BTG 0815) | 47-075-35 | 47-075-35 | — | — |
| BAXI DUO-TEC COMBI 24 HE A (BEFORE SERIAL No. BTG 0815) | 47-075-35 | 47-075-35 | — | — |
| BAXI DUO-TEC COMBI 28 HE A (AFTER SERIAL No. CAC 0929) | 47-075-36 | 47-075-36 | — | — |
| BAXI DUO-TEC COMBI 28 HE A (BEFORE SERIAL No. CAC 0929) | 47-075-36 | 47-075-36 | — | — |
| BAXI DUO-TEC COMBI 33 HE A (AFTER SERIAL No. BTH 1112) | 47-075-37 | 47-075-37 | — | — |
Showing 10 of 52 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 — DUO-TEC 24 HE (GC 47-075-23), DUO-TEC 28 HE (GC 47-075-25), DUO-TEC 33 HE (GC 47-075-24), DUO-TEC 40 HE (GC 47-075-26)
manualmanualBAXI appliance manual — DUO-TEC 28 HE LPG (GC 47-075-39)
manualmanualBAXI appliance manual — DUO-TEC COMBI 24 HE A (AFTER SERIAL No. BTG 0815) (GC 47-075-35), DUO-TEC COMBI 24 HE A (BEFORE SERIAL No. BTG 0815) (GC 47-075-35), DUO-TEC COMBI 28 HE A (AFTER SERIAL No. CAC 0929) (GC 47-075-36), DUO-TEC COMBI 28 HE A (BEFORE SERIAL No. CAC 0929) (GC 47-075-36), DUO-TEC COMBI 33 HE A (AFTER SERIAL No. BTH 1112) (GC 47-075-37), DUO-TEC COMBI 33 HE A (BEFORE SERIAL No. BTH 1112) (GC 47-075-37)
manualmanualBAXI appliance manual — DUO-TEC COMBI 40 HE A (GC 47-075-38)
manualmanualBAXI appliance manual — MEGAFLO 15 HE A SYSTEM (GC 41-075-55), MEGAFLO 18 HE A SYSTEM (GC 41-075-56), MEGAFLO 24 HE A SYSTEM BEFORE BTF 0932 (GC 41-075-57), MEGAFLO 24 HE A SYSTEM FROM SERIAL NO BTF 0932 (GC 41-075-57), MEGAFLO 28 HE A SYSTEM BEFORE CAB 1112 (GC 41-075-58), MEGAFLO 28 HE A SYSTEM FROM SERIAL NO CAB 1112 (GC 41-075-58), MEGAFLO 32 HE A SYSTEM (GC 41-075-59)
manualmanualBAXI appliance manual — MEGAFLO 15 HE SYSTEM (GC 41-075-52), MEGAFLO 18 HE SYSTEM (GC 41-075-53), MEGAFLO 24 HE SYSTEM (GC 41-075-47), MEGAFLO 28 HE SYSTEM (GC 41-075-57)
manualmanualBAXI appliance manual — MEGAFLO 18 HE A SYSTEM LPG (GC 41-075-61), MEGAFLO 28 HE A SYSTEM LPG BEFORE SERIAL No. FSR 1112 (GC 41-075-62), MEGAFLO 28 HE A SYSTEM LPG FROM SERIAL No. FSR 1112 (GC 41-075-62), MEGAFLO 32 HE A SYSTEM LPG (GC 41-075-59)
manualmanualBAXI appliance manual — PLATINUM 24HE COMBI (GC 47-075-20), PLATINUM 28HE COMBI (GC 47-075-21), PLATINUM 33HE COMBI (GC 47-075-29), PLATINUM 40HE COMBI (GC 47-075-30), PLATINUM COMBI 24HE (GC 47-075-27), PLATINUM COMBI 28HE (GC 47-075-28)
manualmanualBAXI appliance manual — PLATINUM COMBI 40 HE A (GC 47-075-34)
manualmanualPOTTERTON appliance manual — GOLD COMBI HE A 28 LPG (GC 47-393-30)
manualmanualPOTTERTON appliance manual — GOLD SYSTEM HE A 28 - AFTER SERIAL No. HSA 1112 (GC 41-592-17), GOLD SYSTEM HE A 28 - BEFORE SERIAL No. HSA 1112 (GC 41-592-17)
manualmanualPOTTERTON appliance manual — PROMAX PLUS A SYSTEM 12 HE (GC 41-591-99), PROMAX PLUS A SYSTEM 15 HE (GC 41-592-01), PROMAX PLUS A SYSTEM 18 HE (GC 41-592-02), PROMAX PLUS A SYSTEM 24 HE (AFTER SERIAL NO. AWD 0932) (GC 41-592-03), PROMAX PLUS A SYSTEM 24 HE (BEFORE SERIAL NO. AWD 0932) (GC 41-592-03), PROMAX PLUS A SYSTEM 32 HE (GC 41-592-04)
manualmanualPOTTERTON appliance manual — PROMAX PLUS SYSTEM 12 HE (GC 41-591-90), PROMAX PLUS SYSTEM 15 HE (GC 41-591-91), PROMAX PLUS SYSTEM 18 HE (GC 41-591-92), PROMAX PLUS SYSTEM 32 HE (GC 41-591-93)
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