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Potterton boiler repairs, servicing & fault code support across Wokingham · Earley · Shinfield · RG40

Potterton Specialist · Gas Safe 599015 · Wokingham

Potterton boiler support · Wokingham & RG40

Potterton Boiler Support & Fault Codes — Wokingham

Promax, Performa & Gold — fault codes, servicing, repairs and manuals from Wokingham’s local Gas Safe specialist

Whether your Potterton boiler is showing a fault code like E119 or E133, needs its annual service, or has stopped working entirely — Thermotec repairs and services Potterton boilers across Wokingham, Earley, Shinfield and RG40. Fixed prices, exact arrival times, 130+ five-star reviews. Calls answered 24/7.

Book Online 24/7 Call 07850 116944

£96

First hour inc.
diagnosis

90%

First-time
fix rate

20+

Years local
experience

130+

5★ Google
reviews

Potterton boiler — Promax, Performa and Gold range supported in Wokingham

Need Potterton help today?

Repairs · Servicing · Fault codes · RG40

Calls answered 24/7 · Stuart follows up first thing

First hour inc. diagnosis£96

Annual service£96

First-time fix rate90%

Google reviews130+ ★

No call-out fee · Gas Safe 599015

Book Online 24/7 07850 116944

★★★★★

130+ five-star Google reviews from homeowners across Wokingham, Earley, Shinfield and RG40

Gas Safe 599015 £96 fixed diagnostic 90% first-time fix Promax · Performa · Gold Calls answered 24/7

What do you need?

Potterton fault codes or annual servicing?

Fault code guide

Potterton Fault Codes

Your boiler is showing a code — E119, E133, E160, E125 or others. Find out what it means, whether you can fix it yourself, and when to call a Gas Safe engineer. Full Potterton fault code guide.

E119, E133, E160, E125 explained → Quick fixes & reset guide → When to call an engineer →

Diagnostic from £96

Annual servicing

Potterton Boiler Service

Annual Gas Safe service for your Potterton boiler — full safety check, efficiency test and digital Benchmark record issued the same day. Helps protect any remaining manufacturer warranty.

What’s included in the service → Wokingham hard-water advice → Book your exact time online →

From £96 · Fixed price

Why choose Thermotec

Potterton boiler experts in Wokingham

Potterton has been a trusted name in UK home heating for decades, known for simple, reliable combi, system and heat-only boilers. Thermotec services and repairs the full range across Wokingham, Earley, Shinfield and the wider RG40 area.

Potterton experts

Years of hands-on experience with Promax, Performa and Gold ranges across local Wokingham properties.

Fast local response

Based in Arborfield — typically on-site within 10–15 minutes of Wokingham, Earley and Shinfield.

Gas Safe registered

Fully qualified Gas Safe engineer, Reg. 599015 — verifiable at gassaferegister.co.uk.

Transparent pricing

Fixed price from £96 confirmed before any work starts. No hidden call-out charges.

Quick fault lookup

Most common Potterton fault codes in Wokingham

Potterton boilers — including the Promax, Performa and Gold series — use alphanumeric fault codes. These are the four we see most often across RG40. Click through to the full fault code guide for step-by-step guidance.

E119

Low water pressure

Pressure has dropped below the safe minimum (typically under 1.0 bar). Top up via the filling loop to around 1.2–1.5 bar and reset. If it drops again within days, suspect a leak or failed expansion vessel.

Full E119 guide →

E133

Ignition failure / gas supply

The boiler is failing to ignite or has lost its flame. Check the gas supply, defrost a frozen condensate pipe if it's cold, then reset. Recurring faults need an engineer to check the ignition lead, valve or flue.

Full E133 guide →

E160

Fan fault

The fan isn't running correctly — a safety issue, since the fan expels flue gases. A Gas Safe engineer needs to test fan wiring and the PCB, replace the fan if required, and check for flue blockages.

Full E160 guide →

E125

Circulation fault

The boiler detects a lack of water movement, often an airlock, failed pump or sludge in the system. Try bleeding radiators first; if that doesn't help, pump replacement or a powerflush may be needed.

Full E125 guide →

View full fault code guide →

Manuals by model

Potterton boiler manuals

Looking for your Potterton boiler manual? Downloadable PDF manuals below cover settings, troubleshooting steps and maintenance for the most common models in Wokingham homes.

Promax System HE Plus

FAQ

Potterton boiler Wokingham — common questions

Questions Wokingham homeowners ask about Potterton boiler faults, servicing and repairs.

What should I do if my Potterton boiler shows E119?

E119 means low water pressure, typically under 1.0 bar. Top up the pressure via the filling loop — a silver braided hose, usually beneath the boiler — until the gauge reads around 1.2–1.5 bar, then reset. If the pressure drops again within a few days, it usually indicates a leak or a failed expansion vessel and needs an engineer.

Can I fix E133 myself on a Potterton boiler?

E133 means ignition failure or a gas supply issue. Check your gas supply is on, defrost the condensate pipe if it's cold outside, then press and hold the reset button. If the fault returns, the ignition lead, gas valve or flue need professional inspection by a Gas Safe engineer.

Is my Potterton boiler too old to repair?

Most Potterton boilers can be repaired and parts are generally available for the Promax, Performa and Gold ranges. If the unit is over 15 years old, a replacement is often more cost-effective long-term — Stuart will give an honest recommendation based on the model and condition.

How much does a Potterton boiler service cost in Wokingham?

Thermotec charges £96 fixed price for a Potterton annual service in Wokingham, including a full safety check and digital Benchmark record.

What does E160 mean on a Potterton boiler?

E160 is a fan fault — the fan isn't running correctly, which is a safety issue since the fan expels flue gases. This requires a Gas Safe engineer to test the fan wiring and PCB, replace the fan if needed, and check for flue blockages.

Do you have Potterton boiler manuals?

Yes — Thermotec provides downloadable PDF manuals for popular Potterton models including the Promax Combi HE Plus, Titanium Combi, Assure Combi, Promax System HE Plus, Promax Ultra, Gold Combi HE and Performa SL HE.

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