Repair guides
The jobs behind the codes, written out as procedures rather than as a list of links. Repressurising a boiler, bleeding a radiator, thawing a condensate pipe, isolating a cooker circuit — each guide is one job, with the manufacturer wording it is built from named in the body.
Every guide has a named author. Each is written from published documentation and has not been reviewed by a registered engineer, and nothing here claims a Gas Safe, OFTEC or competent-person registration it does not hold. A guide is not a substitute for the appliance’s own manual, and it is not permission to open a case the manual tells you to leave shut.
Start from the job you actually have. If the display is showing a code, the brand page for that code is the better first stop — these guides sit beside that page for the work the code implies, and they say when the next step is a qualified person rather than another paragraph.
How to repressurise a boiler
The five-minute job that resolves more no-heating calls than any other. Here is how to do it properly, and how to tell when topping up is the wrong answer.12 min read · 28 September 2026What to do when your condensate pipe freezes
The single most common winter boiler fault, and one of the few you can genuinely fix yourself in fifteen minutes with a kettle and some patience.5 min read · 28 September 2026How to bleed a radiator
The most searched household repair in Britain, and the one most likely to stop your boiler an hour after you finish it. Here is the order to work in, and what to do about the pressure afterwards.9 min read · 28 September 2026Boiler fault codes explained: what they actually tell you
Codes look like diagnoses and are not. Understanding which family a code belongs to turns a meaningless number into a genuinely useful starting point.8 min read · 28 September 2026What a Gas Safe engineer actually checks in a boiler service
Most people pay for this once a year and stand in another room while it happens. Here is what should be going on, which test cannot be faked, and how to tell a real service from twenty minutes and an invoice.11 min read · 28 September 2026How to reset a washing machine, and what it will not fix
What each manufacturer says about resetting, how long to wait, the codes where a reset is the wrong move, and the displays that only look like faults.10 min read · 28 September 2026Washing machine repairs you can do yourself — where to stop
No law stops you repairing your own washing machine, so the line is drawn by what is inside the cabinet. Where it falls, and the recall to check first.9 min read · 28 September 2026How to find your washing machine’s model and serial number
The rating plate is in one of three places, and the brand decides which. Where each manufacturer says to look, and which of the numbers on it you need.6 min read · 28 September 2026How to reset a dishwasher, and why most codes have no reset
On a dishwasher, "reset" usually means cancel the programme. What each manufacturer actually offers, and the codes they deliberately give no reset for.8 min read · 28 September 2026Dishwasher not draining or not filling: what to check
Drain and fill codes are the biggest cluster in the category, and most end for nothing. The checks the manufacturers publish, in order, and where they stop.9 min read · 28 September 2026Dishwasher leak and flood codes: what to do right now
Every dishwasher code rated dangerous here means water where it should not be. What the machine is doing, what to do in the next two minutes, and what not to.8 min read · 28 September 2026How to reset a tumble dryer: the load comes out first
Every manufacturer’s reset is a version of unplug and wait. The step most leave out is the one that matters on a dryer: get the washing out and spread it.8 min read · 28 September 2026Why a tumble dryer overheats, and what to do about it
A dryer keeps a heater, a fan and fine dry lint in one box, and the codes that matter let them meet. The airflow path to clean, and the codes that mean stop.9 min read · 28 September 2026Tumble dryer recalls and safety notices: check yours
Three fire safety campaigns are live on UK tumble dryers, one the largest in British history. Which machines, how to check the plate and serial, the remedy.9 min read · 28 September 2026How to reset an oven: the clock, the switch, and the codes
A built-in oven has no plug, most of what it displays is not a fault, and on some models setting the clock is the reset. What each manufacturer publishes.8 min read · 28 September 2026Oven not heating: what to check before you call anyone
Many cold ovens booked for repair have a free cause: demo mode, the clock, a lock, the wall switch. The checks in order, where to stop, and what it costs.8 min read · 28 September 2026Is an oven fault dangerous? The codes that mean stop
Two oven codes are rated dangerous here, and they need different people. What F134 and Er2 mean, how to isolate an oven with no plug, and the fire rule.7 min read · 28 September 2026Hob showing H, L, F or U400: what it means and how to reset
Most letters on a hob are the hob working. Which ones are, which are the wiring, how each brand resets, and why a cold-looking surface is not to be trusted.8 min read · 28 September 2026Hob faults: what you can fix, who to call, and what it costs
One category, two trades. What a householder can do on an induction or gas hob, where the glass and the gas stop you, and what the repairs cost.8 min read · 28 September 2026How to reset a fridge freezer, and what a reset cannot fix
Unplug and wait works on some fridges and proves nothing on others. The published waits, the demo-mode trap that survives a power cycle, and when to stop.8 min read · 28 September 2026Fridge door seals, ice build-up and noises: fix or call?
The three things a fridge does when something is wrong, which of them you can put right, and the one rule that keeps a defrost from becoming a gas leak.8 min read · 28 September 2026EV charger not charging? The delay, the schedule, the light
A chargepoint that does nothing is usually obeying the smart charging rules. What they make it do, how to read the light against the app, and the two resets.8 min read · 28 September 2026EV charger tripping or showing an earth fault: what it means
A chargepoint that trips is usually reporting your electricity supply, not itself. Open-PEN detection, the voltage window, earth faults, RCDs and who to call.8 min read · 28 September 2026Heat pump defrost and sterilisation cycles: not faults
Vapour off the outdoor unit, ice on the fins, a cylinder heating to 65°C at 3am: the cycles a heat pump runs by design, and what each manufacturer publishes.8 min read · 28 September 2026Heat pump faults: what you can check, and who can touch it
Two circuits, two trades. Gauge, isolators and schedule are yours to check; refrigerant is F-Gas work by law. How each code tells you which side it is on.8 min read · 28 September 2026How to reset a microwave, and what the display means
Every make says unplug it, but the seconds differ. What each brand publishes, the displays that are not faults, and what to do with a code nobody publishes.8 min read · 28 September 2026Microwave faults: what you can fix, what you must not open
The plug fuse, the door, the waveguide cover and a mug of water are yours. Everything behind the casing is not, and unplugging it does not change that.8 min read · 28 September 2026Range cooker faults: hob codes, the gas side, who to call
Only the induction hob can show a code, and it means one of four things. Published resets, isolating with no plug, the gas side, and the open safety notice.8 min read · 28 September 2026Electric shower running cold, tripping or dead: fix or call
Cold water, a dead neon or a burst relief tube is usually flow, scale or the pull cord. A tripping breaker or a burning smell is the 40-amp circuit talking.8 min read · 28 September 2026Air conditioning not cooling, dripping or stopped: checks
A split has no screen, so get the code out first; on a Toshiba, before touching the power. Then the filter, drain and isolator, and where F-Gas work begins.7 min read · 28 September 2026Solar shutting down at midday, battery not discharging
The two commonest solar complaints are usually the grid and a setting, not the kit. What the app history tells you, who to ring, and why the roof stays live.8 min read · 28 September 2026