Boiler Fault Diagnosis
If your boiler is showing an error code, losing pressure or just not working properly, we'll find out why and explain it in plain English before any repair is agreed. Gas Safe registered and based in Woodingdean, we cover Brighton, Hove and surrounding Sussex towns.
What our diagnosis visits cover
Whatever your boiler is doing (or not doing), we work through it methodically rather than guessing.
No Heating or Hot Water
Tracking down why your boiler has stopped providing heating, hot water, or both.
Error Code Diagnosis
Reading and interpreting fault codes to identify the underlying cause rather than just clearing the display.
Pressure Loss Investigation
Finding the source of repeated pressure drops, from small leaks to faulty valves.
Unusual Noise or Performance Checks
Investigating banging, whistling, or inconsistent heating that suggests a developing fault.
Finding the actual cause, not just clearing an error code
A boiler fault diagnosis visit is different from a routine service. You've got a specific problem, whether that's no heating, an error code you don't recognise, low pressure that keeps coming back, or a strange noise, and you need someone to work out what's actually causing it before any repair is agreed. That's what this visit is for.
We start by asking about what you've noticed: when the fault started, whether it affects heating, hot water or both, and any codes or sounds you've spotted. From there we do a visual inspection of the boiler, pipework, controls and flue, then check pressure, and test the components most likely to be at fault, things like sensors, pumps, valves and the PCB. It's a process of elimination based on evidence, not a guess followed by a part swap.
A proper diagnosis means you only pay for the part that's actually broken.
The most common worry we hear is that an engineer will replace something expensive without being sure it's the real problem. We'd rather take the time to prove the fault first. Sometimes that means a straightforward repair on the day; sometimes it means giving you an honest recommendation, particularly with older boilers where a part might be obsolete or the economics of repair versus replacement need talking through.
More information
We carry out boiler fault diagnosis for homeowners across Brighton, Hove, Woodingdean, Lewes, Shoreham-by-Sea, Haywards Heath, Seaford, Worthing and Burgess Hill. As Gas Safe registered engineers and an accredited Vaillant installer, we're set up to safely test gas appliances and give you a clear explanation of what's wrong, with test readings and paperwork where relevant.
If a repair is needed, we'll talk you through what's involved and what it will cost before doing any work. If the fault points to something more serious, or the boiler is at the end of its life, we'll be straight with you about that too rather than patching something that's only going to fail again.
Tidy, straightforward, and no work carried out without you knowing the cost first.
If your boiler's playing up, get in touch and we'll talk through what you're seeing and get a visit booked in.
Recent work
Vaillant boiler installation in Hove
We were called out to investigate ongoing problems with an existing combi boiler that had been badly fitted and poorly maintained. We then supplied and installed a new energy efficient Vaillant ecoTEC plus with wireless controls, backed by a ten year warranty.
Worth considering
No Heating Repair
Cold radiators or a system that will not fire, traced to the fault and repaired at source, for homes across Brighton, Hove and Sussex.
No Heating Repair→No Hot Water Repair
Fast, tidy diagnosis and repair for homes with no hot water, from Gas Safe registered engineers covering Brighton, Hove and Sussex.
No Hot Water Repair→Boiler Pressure Problems
Gas Safe registered fixes for low, high or fluctuating boiler pressure, done properly and tidily across Brighton, Hove and nearby Sussex towns.
Boiler Pressure Problems→Before you book
Some of the questions we're asked most often about diagnosing boiler faults.
How long does a boiler fault diagnosis visit take?
Will you fix the boiler on the same visit?
What if you can't work out the fault straight away?
Do you work on all boiler brands?
Is this different from an annual boiler service?
What areas do you cover for boiler diagnosis?
Are you qualified to work on gas boilers?
What should I check before calling you out?
Let's find out what's wrong with your boiler
Call us or drop a message with what you're noticing and we'll advise on next steps before booking a visit.
Call 01273 911551