Ideal
Ideal Pressure Switch Membrane BI1011 103 075421
Ideal pressure switch membrane 075421 (BI1011 103) for C80 FF, C95 FF and Europa boilers, cross-referenced to 1174085 and N2230-C.
At a glance
- Part type: Pressure switch membrane (diaphragm)
- Also known as 1174085, N2230-C
£13.30
£11.08 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The pressure switch membrane (diaphragm) 075421 is a replacement component for Ideal central heating boilers. It sits inside the pressure switch assembly and flexes in response to changes in system or fan pressure, closing the switch contacts so the boiler control board registers a demand and allows the appliance to fire. A split, hardened or distorted membrane stops that signal reaching the board, which is why the boiler can appear dead or cycle unpredictably.
Signs this part needs replacing
- Boiler fails to fire on a call for heat or hot water, with no fan or ignition sequence starting
- Intermittent operation, where the appliance runs on some demands but not others
- Pressure switch contacts not closing when the fan runs, traced back to a stiff or perished membrane
- Visible splitting, cracking or deformation of the diaphragm once the switch is opened
- Repeated lockouts that clear temporarily and return after a short period of use
Before you order
- Check the appliance GC number and model against the compatibility list before ordering, as the same switch body can carry different membranes across the range
- Cross-check the alternative part numbers 1174085 and N2230-C against the component being removed
- Inspect the switch housing and any sealing faces while the assembly is apart, and replace worn seals at the same time if required
Mechanical
| Part type | CH PRESSURE SWITCH MEMBRANE BI1011 103 |
|---|
Compliance
| Manufacturer part number (MPN) | 075421 |
|---|---|
| GC number | E00-689 |
| Barcode / EAN | 5022140754211 |
| Commodity code | 8403 90 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 1174085, N2230-C |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| IDEAL C80 FF | 47-348-05 | 47-348-05 | — | — |
| IDEAL C95 FF | 47-348-06 | 47-348-06 | — | — |
| IDEAL EUROPA 224 | 47-348-26 | 47-348-26 | — | — |
| IDEAL EUROPA 228 | 47-348-27 | 47-348-27 | — | — |
| IDEAL EUROPA 232 | 47-348-28 | 47-348-28 | — | — |
| IDEAL HENRAD C80FF | 47-348-08 | 47-348-08 | — | — |
| IDEAL HENRAD C95FF | 47-348-09 | 47-348-09 | — | — |
| IDEAL IDEAL : C80 FF | — | — | — | |
| IDEAL IDEAL : C95 FF | — | — | — | |
| IDEAL IDEAL : EUROPA 224 | — | — | — |
Showing 10 of 32 compatible appliances.
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.
IDEAL appliance manual — C80 FF (GC 47-348-05), C95 FF (GC 47-348-06)
manualmanualIDEAL appliance manual — EUROPA 224 (GC 47-348-26), EUROPA 228 (GC 47-348-27), EUROPA 232 (GC 47-348-28)
manualmanualIDEAL appliance manual — HENRAD C80FF (GC 47-348-08), HENRAD C95FF (GC 47-348-09)
manualmanualIDEAL appliance manual — MINI C24 (GC 47-348-18), MINI C28 (GC 47-348-19), MINI C32 (GC 47-348-25)
manualmanualIDEAL appliance manual — MINI HE C24 (GC 47-348-38), MINI HE C28 (GC 47-348-39), MINI S24 (GC 41-392-98), MINI S28 (GC 41-392-99)
manualmanualIDEAL appliance manual — MINI HE C32 (GC 47-348-41)
manualmanualIDEAL appliance manual — WICKES C80 (GC 47-348-05)
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