Potterton
Potterton Air Pressure Switch 5112198
Potterton 5112198 air pressure switch for Performa HE 21 SL and Suprima 70 HE/L gas boilers.
At a glance
- Also known as 1123741
£47.46
£39.55 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 Potterton Air Pressure Switch (part number 5112198) is a safety component used on Potterton gas boilers. It monitors the pressure produced by the combustion fan and confirms airflow before the boiler is allowed to ignite. If the fan does not prove, the switch prevents the boiler from firing.
Signs this part needs replacing
- Boiler locks out shortly after the fan starts, or fails to ignite at all
- Intermittent lockouts that clear on reset but return
- Fan runs but the boiler does not proceed to ignition
- Repeated lockout codes relating to fan or air pressure proving
Before you order
- Confirm your boiler model matches one of the appliances listed above
- Check the existing air pressure switch part number against 5112198
- Verify the GC number on the appliance data badge where available
Compliance
| GC number | H26-816 |
|---|---|
| Barcode / EAN | 5039177655510 |
| Alternative numbers | 1123741 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| POTTERTON PERFORMA HE 21 SL | 41-592-09 | 41-592-09 | — | — |
| POTTERTON SUPRIMA 70 HE | 41-075-39 | 41-075-39 | — | — |
| POTTERTON SUPRIMA 70 L | 41-590-46 | 41-590-46 | — | — |
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.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.