Potterton boilers are common in older Birmingham properties in particular, and while newer models are generally reliable, ageing units can develop recurring faults that are worth diagnosing properly rather than repeatedly resetting.
Common Potterton faults
- Ignition or gas supply faults (E133)
- Low system pressure (E119) — see our pressure page
For more codes across other brands, see our error codes page.
Repair or replace?
Potterton as a brand has had several model generations over the years, and parts availability varies a lot depending on age. If your boiler is older and a part isn't readily available, we'll tell you honestly whether repair is realistic or whether replacement makes more practical sense — rather than defaulting to whichever earns more.
Beyond economical repair? New boilers are fitted from £1,999 by our installation arm — see Birmingham Boiler Installation.
Models we see most
Recent callouts tend to involve the Promax and Titanium ranges, while older Birmingham properties still run plenty of long-serving Suprima and Profile models. The older the model, the more parts availability shapes the repair-or-replace question — which is exactly what the diagnosis settles.
Frequently asked questions
Do you carry Potterton parts?
Common failure parts are stocked on the van generically. Potterton-specific parts are sourced same or next day where suppliers still carry them — for older models availability varies a lot, and we'll tell you honestly if a part is obsolete rather than string the job out. Most repairs carry a 12-month parts warranty.
What does Potterton E119 mean?
E119 is low system pressure. Check the gauge and, if you're comfortable, top up via the filling loop to around 1.2–1.5 bar. If it keeps dropping, see our losing pressure guide — something is letting water out of the system.
My Potterton is over 15 years old — can you still fix it?
Often, yes — it depends on whether the failed part is still obtainable. Diagnosis is £99 including the first hour, and if replacement genuinely makes more sense than repair, we'll say so rather than default to whichever earns more.