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The 24 Hour Boiler Repairs call centre is open right around the clock. Our team of friendly operators are on hand to take your call and dispatch a highly trained engineer to your door. Our commitment to dealing quickly with all boiler emergencies, regardless of when or where they happen, means we have one of the best response times around. So, rest assured, when you get in contact with 24 Hour Boiler Repairs, your problem will be dealt with at speed by a team of highly skilled professionals. If you have an issue with your heating system, get in touch straight away.

Address
24 Hour Boiler Repairs
86-90 Paul Street
London
EC2A 4NE

Phone
0203 868 6251

Email
info@24hourboilerrepairs.co.uk

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Need a Gas Safe engineer in London ASAP? Call us 24 Hours a day!

Trianco

Trianco Boiler Repairs London

Gas Safe and OFTEC registered engineers · 24/7 call handling · London wide

Tell us the fault indicator and model. We will advise the safest next step.

  • Experienced Trianco Boiler Repairs specialists
  • Available 24 hours a day, 7 days a week
  • Insurance approved
  • All parts guaranteed for a year
  • Fully Gas Safe trained engineers

Lines open now

0203 868 6251

Have your Trianco model and the indicator showing ready.

★★★★★4.6/5 on Google

Common searches include Trianco boiler fault codes, Trianco red light flashing, Trianco lockout, Trianco EuroStar fault, Trianco no heating, and Trianco Aztec problems. If you can, tell us the model name from the data badge and any warning lights or display codes.

We cover Trianco boiler repairs in London, including oil boiler lockouts, no heating, no hot water, and burner faults. We also offer boiler servicing and boiler installation across London.

Safety First

Smell oil or fumes? Turn off the boiler at the controls. Open windows. Do not attempt to restart. Call an engineer.

CO alarm sounding? Stop using the boiler. Open doors and windows. Leave the property. Call 999. If anyone is drowsy, breathless or has a headache, tell the operator. Do not re-enter until you are told it is safe.

Boiler leaking heavily? Turn off the boiler at the controls. If safe, turn off the water supply. Call an engineer.

For gas boilers: If you smell gas, turn off the gas supply at the meter if it is safe to do so. Open windows. Leave the property. Call the National Gas Emergency Service on 0800 111 999.

★★★★★Great guy on time true professional resolve the issue same dayDavid Brazier · Google review★★★★★Excellent from start to finish.George · Google review★★★★★Perfect service and professional engineer!Halil Atarkan · Google review

Quick Checks Before You Call

Before calling an engineer, these safe checks may resolve simple issues with your Trianco boiler.

Check the fuel supply

For oil boilers: Is there oil in the tank? Check the gauge. For electric boilers: Is the power supply on? Check the isolator switch and fuses.

Check the pressure gauge

Pressure should read around 1.0 to 1.5 bar when cold. If it is low, you may need to top up using the filling loop (location varies by installation).

Check the thermostat

Is the room thermostat set above current room temperature? Are the batteries working?

Check the timer or programmer

Is the heating scheduled to be on? Check the clock is set correctly.

Try a single reset (oil boilers)

If the burner has locked out, locate the reset button on the burner control box. Press once and wait. Do not press more than twice. If it locks out again, call an engineer.

Gas Safe registered boiler engineers

Fully Gas Safe trained engineers

Every gas repair is carried out by a Gas Safe registered engineer. You are told what needs doing and what it costs before anything starts.

★★★★★4.6/5 on Google

Trianco Fault Indicators Explained

Trianco boilers use LED indicator lights rather than digital fault codes on most models. The meaning varies by model (EuroStar, Aztec, Greenflame). Use the table below as a quick guide only.

Indicator / symptom/Typical meaning/Safest next step

Red LED on (steady)

Burner lockout or fault detected. Do not keep resetting. Call an engineer.

Red LED flashing

Open circuit or sensor fault. Boiler may still operate but needs attention. Call an engineer for diagnosis.

Amber LED flashing

Temperature satisfied (Aztec electric models). Normal operation. No action needed unless heating is not working.

Burner lockout

Oil burner failed to ignite or flame lost during operation. Try one reset (press reset button once). If it locks out again, call an engineer.

No lights / no power

Power supply issue or fuse blown. Check the isolator switch and fuses. If power is present, call an engineer.

Symptom not listed

Trianco indicators vary by model and fuel type. Call us with the model name and symptom and we will advise the safest next step.

Note: Trianco indicators vary by model and fuel type. Tell us the model name and what you can see and we will advise the safest next step.

Not sure which fault you have?

Call with your model and the indicator you can see. We will tell you what is likely involved before anyone attends.

0203 868 6251

Most Searched Problems

Tell us the model name and what the boiler is doing and we will confirm the safest next step.

Trianco oil boiler lockout

Burner lockout is common with oil boilers. May be caused by blocked nozzle, dirty photocell, air in the fuel line, or ignition electrode problems. Try one reset. If it locks out again within 30 seconds, call an engineer.

Trianco boiler losing pressure

Losing pressure repeatedly may indicate a leak in the system (radiators, pipework, or boiler components). An engineer can pressure test to find the source.

Trianco boiler no hot water

Check the hot water temperature setting. If heating works but hot water does not, the motorised valve or cylinder thermostat may be faulty. Call an engineer.

Trianco electric boiler not heating

Check the power supply and thermostat settings. The thermal cutout may have tripped. Try pressing the red reset button on the element. If it trips again, call an engineer.

Why Trianco Boilers Develop Faults

Age and wear

Boilers over 15 years old are more prone to component failure. Seals, valves and burner components degrade over time.

Lack of servicing

Oil boilers require annual servicing to keep the burner clean and efficient. Skipping services leads to carbon buildup, blocked nozzles, and premature failure.

Fuel quality

Contaminated or old heating oil can cause burner problems. Water or sludge in the tank can block filters and nozzles.

System sludge

Dirty system water circulates debris through the boiler. This clogs heat exchangers and damages pumps. A powerflush can help.

Trianco Models We Repair

Our engineers work on Trianco oil, electric, and solid fuel boilers including:

Trianco boiler repairs London We repair every Trianco model Current ranges and older units, subject to parts availability
Oil boilers EuroStar (50 to 125), EuroStar Combi, EuroStar Premier, EuroStar Condensing
Electric boilers Aztec (6kW to 15kW), Aztec Plus
Solid fuel / biomass Greenflame, TRG range (note: biomass service is limited)
Older models Optima, Tristar, Contractor series

Trianco boilers are manufactured in Sheffield, England. If you are unsure of your model, check the data badge on the front or side of the boiler casing.

Repair or Replace

A repair usually makes sense if the boiler is under 15 years old and the fault is straightforward (burner nozzle, photocell, electrode, pump). However, repeated lockouts, major component failures (heat exchanger, burner motor), or difficulty sourcing parts may make replacement more cost-effective.

We can advise whether repair or replacement is the better option for your situation. If a new boiler is needed, we offer boiler installation with a range of manufacturers.

We will advise honestly after inspection. There is no pressure to replace if a repair is practical.

Annual Servicing

Annual servicing is essential for oil boilers to maintain efficiency and prevent breakdowns. We recommend servicing every 12 months. Book a service here.

Landlords and Letting Agents

Landlords with gas appliances must have them checked annually by a Gas Safe registered engineer. We provide CP12 certificates for landlords across London.

Related Services

Emergency boiler repairs Breakdowns, lockouts and leaks Boiler servicing London Annual service and safety checks Boiler installation London Replacements and new fitting Power flush London Cold radiators and system sludge Landlord gas safety certificate (CP12) Certification across London London areas we cover Book an engineer in your borough

What customers say

Verified Google reviews. 4.6 out of 5.

★★★★★

Excellent from start to finish. The Engineer was helpful on the phone diagnosing the issue, and was able to start and finish the work in good time, and made every effort to do the best job possible. All working well, and was able to get a long guarantee.

GeorgeGoogle review
★★★★★

Great guy on time true professional resolve the issue same day

David BrazierGoogle review
★★★★★

Booked them in for a power flush after ongoing heating issues. The engineer was very thorough and explained what was being done at each stage. We noticed a huge difference in how quickly the radiators now heat up.

S ThanuGoogle review

Speak to Our Team

Lines are open 24 hours. Tell us the model and fault indicator. We will advise the safest next step and, if needed, send an engineer.

Call 0203 868 6251

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Gas Safe and OFTEC registered · 24/7 call handling · Quote before work
24 Hour Boiler Repairs, 86-90 Paul Street, London EC2A 4NE
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Google reviews

★★★★★4.6/5 on Google
★★★★★

Used this company after being recommended and I’m glad I did. The engineer was punctual, honest about costs and carried out the work to a very high standard. Felt like a trustworthy service.

Siva YelakarajulaGoogle review
★★★★★

Really impressed with the boiler repair service. Clear communication from the start and no surprises with pricing. The engineer was friendly, knowledgeable and got everything sorted efficiently.

Nishanth ThachemaGoogle review
★★★★★

Good value for money & was able to sort out my boiler quickly by ordering next day delivery for broken parts. Friendly, punctual service and laid out all the costs beforehand which was helpful. Would recommend.

Emma CourtneyGoogle review

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