Potterton Boiler Repair, Birmingham

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£99 in office hours (Mon–Fri, 8am–5.30pm) covers attendance, diagnosis and the first hour. Parts and any further work are quoted and agreed before we carry on. Out of hours, the price is quoted by phone before we set off.

No travel charge within 10 miles of B20 2JS. Further out, £2 per mile may apply — always agreed before anything is booked. Full price list

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What do you need?Choose a service…Boiler repair or breakdownEmergency (no heat, no hot water, leak)New boiler or replacementBoiler serviceLandlord gas safety certificate (CP12)Gas leak detection or trace (no smell now)Power flush / cold radiatorsRadiators, valves and TRVsPlumbing repairGas fire service or repairGas cooker or hob fittingSmart heating controlsHot water cylinder or immersion heaterLPG heatingHeat interface unit (HIU) service or repairAir source heat pump service or repairElectric boiler, water heater or thermal storeSomething else / not sure

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Boiler make (optional)Not sure / not relevantWorcester BoschVaillantBaxiIdealGlow-wormPottertonMainViessmannIntergasATAGVokeraBiasiFerroliAristonOther

When suits you? (optional)No preferenceAs soon as possibleA weekday morningA weekday afternoonI am flexible

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Potterton faults and what usually causes them

Potterton shows E codes on the Promax, Titanium and Gold. The code tells us where to start testing, not which part has failed. These are the ones we are asked about most.

• E133, will not light. An interruption of the gas supply, an ignition failure or no flame detected. Check the gas is on and that other gas appliances work, and in freezing weather the condensate pipe outside. Otherwise the likely causes are the electrode or the gas valve, and testing tells us which.
• E119, low water pressure. The pressure in the heating system has fallen below about 0.5 bar. Top up through the filling loop to between 1 and 1.5 bar with the boiler cold. If it needs topping up again and again, there is a leak or a failed part to find.
• E110, overheat. The safety thermostat has operated because the heating water overheated, usually because it has stopped moving. One reset; if it will not relight or the code returns, stop and call.
• E125, poor circulation. The boiler lit but the water is not circulating properly. Usually the pump, an airlock or a blockage, and often sludge behind it.
• Parts that are no longer made. On older Potterton boilers some parts have been discontinued. Before we quote a repair we check the part is still available, and if it is not we tell you before you spend anything beyond the £99 diagnosis.

Potterton fault codes, briefly

Press reset once. If the code comes back, stop resetting and ring us with the code and the model. Do not keep resetting an overheat (E110) or flue (E130) fault. Our guide lists the full set of Potterton fault codes, checked against Potterton's own user and installer guides, and our Baxi boiler repair page covers Baxi and Main, which share the same family of codes.

Potterton models we work on

The Assure, Promax, Titanium and Gold, and the older floor-standing Powermax with its built-in hot water store. When you call, have the model name and the code on the display, or send a photo by WhatsApp.

Told your Potterton needs replacing?

There is a point at which a boiler is not worth repairing: past twelve years old, on its second or third major part, with a corroding heat exchanger. If yours is there, we will say so and put the repair price and the replacement price side by side. A Baxi or Main Eco Compact combi swap is £1,999 with a five-year warranty, and a Baxi 600 is £2,199 with seven years, both confirmed in writing after a free survey.

Some are past repair. In Erdington in October 2026 a landlord's Potterton Powermax had been condemned and labelled Do Not Use, leaving the tenant without heating or hot water. The Powermax is a tall floor-standing unit with a hot water store built in underneath, and it filled the cupboard. We took it out and fitted a wall-hung Baxi 400 combi with a magnetic filter and scale reducer, with the new flue properly supported, and the tenant got most of the cupboard back.

Servicing a Potterton

An older boiler earns its annual service more than a new one. A basic service is £95 and includes a combustion check on the analyser; an intermediate service is £125 and a full strip-down is £185 with gaskets and an inhibitor top-up included. On an older Potterton the service is also when we can tell you honestly how much life it has left and which parts are still obtainable.

Potterton jobs we have written up

Three so far, written up with the photos our engineers took. More are added as we do them.

We also repair Worcester Bosch, Vaillant, Baxi, Ideal, Glow-worm, Viessmann and Ferroli boilers. Every other make is covered on our main boiler repair page.

Prices

The £99 is a fixed charge for attendance, diagnosis and the first hour in office hours (Mon–Fri 8am–5.30pm); it is not the price of every repair, and parts and further work are quoted and agreed before we carry on. Service prices are the price for the job as described, installation prices are confirmed in writing after a free survey, and out-of-hours work is quoted by phone before we set off. No travel charge within 10 miles of B20 2JS; further out, £2 per mile may apply, agreed before booking. How our prices work.