Worcester Boiler Repairs London
Over 20+ years experience with Worcester Boilers
Insurance approved
90% repaired on the same day
0203 695 3137
How we can assist with your Worcester Boilers
- Emergency Boiler Repairs
- Boiler Service
- Landlord Safety Certificates
- New Boilers Installations
- Leaking & Noisy Boilers
- Power Flushes
Boiler Repairs R Us are experienced in handling all types of Worcester Boilers. We can also assist with all gas, condensing, combi boiler installations and upgrades. All our plumbers are Gas Safe Registered so you can be assured all our work is carried out within the required regulations. So for complete customer satisfaction call us on 0203 695 3137 to get your Worcester Boilers repaired today!
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Trusted, reliable boilers repair & install specialists.
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Worcester Bosch Boiler Repair Help Centre
Common Worcester Bosch faults, fault codes, safe checks, and when to call a Gas Safe engineer.
We specialise in Worcester Bosch boiler repairs across London.
Gas Safe registered engineers for safe diagnosis, repair and testing.
24/7 availability with London wide call handling and booking.
Worcester Bosch Boiler Repair London (Gas Safe)
Seeing EA, E9 or low pressure? No heating or hot water? Tell us the fault code, model and postcode and we will advise the quickest safe next step.
📞 Call 0203 695 3137
Request Call Back
Fast triage: Greenstar model (CDi/Si/i/ErP), fault code, postcode, and whether other gas appliances work for ignition faults.
⚠️ Safety First
Smell gas? Do not touch anything. Do not use switches. Open windows, leave the property, and call the National Gas Emergency Line: 0800 111 999.
Carbon monoxide alarm sounding? Get everyone out immediately and call 999. Learn more about carbon monoxide safety.
No gas smell, no alarm? The boiler may have locked out as a safety precaution. Try the quick checks below.
Jump to: Fault Codes · EA Fault · Pressure · Frozen Condensate · Repair or Replace
Quick Checks Before You Call Anyone
These take 60 seconds and fix a surprising number of Worcester lockouts:
- Check boiler pressure: Aim for 1.0 to 1.5 bar when cold. Use our pressure guide.
- Note the fault code: EA, E9 and pressure faults are common. Write it down before you reset.
- Check electrics: Boiler fused spur on, no tripped breakers.
- Thermostat and timer: Confirm demand is on and set above room temperature.
- Freezing weather? Check the condensate pipe (see below).
- Reset once only: Press reset once, wait 60 seconds. If it locks out again, stop and call an engineer.
Worcester Bosch Fault Codes
| Code | Meaning | What to do |
|---|---|---|
| EA | No flame / ignition failure | Check gas supply and other appliances. Check condensate in freezing weather. If it returns, call an engineer. |
| E9 | Overheat / safety trip | Do not keep resetting. Call an engineer to check circulation and safety controls. |
| Low pressure | System pressure too low | Top up to 1.0 to 1.5 bar. If it drops again, call an engineer. |
| Flue / airflow | Airflow safety issue | Call an engineer. Do not attempt DIY on flues. |
| Fan fault | Fan not proving correctly | Call an engineer. |
| Heat demand issue | Controls not calling for heat | Check thermostat, programmer and batteries. If unsure, call us. |
EA: Ignition Failure
What is happening: The boiler is trying to ignite but cannot establish a stable flame.
What to try: Check whether your gas hob works. In freezing weather check the condensate pipe. Reset once only. If EA returns, call an engineer.
Low Pressure
If pressure is below 1 bar, top up to 1.0 to 1.5 bar. Step by step help: pressure guide.
Frozen Condensate Pipe (Winter)
Frozen condensate pipes are a common winter cause of ignition lockouts.
- Find the condensate pipe (white or grey plastic running to a drain).
- Pour warm water (not boiling) over the frozen section.
- Reset the boiler once thawed.
Full instructions: frozen condensate pipe guide.
Why These Faults Are Common in London
- Hard water: limescale and sludge reduce circulation and can contribute to overheat trips.
- Winter snaps: external condensate pipes freeze and cause ignition lockouts.
- Older systems: microbore pipework and imbalance can cause repeated pressure drops.
Worcester Bosch Models We Repair
- Greenstar CDi: combi and system
- Greenstar Si: compact combi
- i Series: newer Greenstar range
- Regular and system boilers: older Worcester installations
🔧 Repeated Lockouts or Cold Radiators?
Restricted circulation can contribute to overheating and nuisance lockouts. If radiators are cold at the bottom or you have noisy pipework, a power flush can restore flow. Power flush guide.
Repair or Replace?
Worcester Bosch boilers often last 10 to 15 years with good maintenance. If yours is approaching that age and needs a major repair (PCB, heat exchanger, fan), replacement may be more cost effective.
Read: Repair or replace? and New boiler installation.
Worcester Bosch Servicing
Annual servicing reduces breakdown risk and protects performance. Book: boiler servicing.
Renting? Landlords: Check This
Landlords: Gas Safety Certificate (CP12) and our London landlord checklist.
London Wide Coverage
We repair Worcester Bosch boilers across all London boroughs.
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Book Your Worcester Bosch Repair
Gas Safe engineers available across London. Speak to our team for safe next steps.