Makes we repair
Does Malvern still make boilers?
Malvern Boilers Limited stopped making boilers for homes at the end of 2007, after more than eighteen thousand since 1991. It now makes commercial water heaters, boilers and other appliances for other brands. The company, of Malvern in Worcestershire, is still in business.
Malvern still sells parts for the home boilers it made. Its support page says the spares are still stocked, and it keeps each model's manuals and parts lists there. Whether a given part is in stock on the day is Malvern's to say.
We fit new boilers in place of Malverns, quoted from photos or after a free survey visit. We are an independent firm, with no connection with Malvern Boilers Limited. If your Malvern has stopped, ring us, and we'll ask which lamps are lit.
Sources: Malvern's archived home pages, its website and support page today, and Companies House.
What's involved in replacing a Malvern?
Replacing a Malvern starts with a quote. That quote comes from photos of the old boiler, its flue and where it sits, or after a free survey visit. It's in writing before any work starts. If we quoted from photos, a survey confirms the quote before the new boiler is fitted.
Sized to your home: our engineers work out the new boiler's size with a heat loss calculation. They set its heating output to suit the home, and balance the radiators fully when it goes in. Every Malvern but the Combi heats a hot water cylinder, so we'll ask whether you'd keep the cylinder or change to a combi. See how combi, system and regular boilers differ.
What the rules ask of a new gas boiler in England:
- a minimum efficiency, its ErP rating
- on a new combi, one more energy saver, such as weather compensation or a smart thermostat that learns and adjusts
- a cleaned and flushed heating system, with inhibitor added
- a carbon monoxide alarm in the same room
The makes we fit most are Vaillant and Worcester Bosch, though we fit every make and model. Where a maker's guarantee asks for its own magnetic filter, we fit that. Nothing is fitted without your yes.
Need heat back sooner? We fit emergency replacements too. Ring us, and we'll ask what the boiler is doing and say when an engineer can come.
Sources: Malvern's installation manuals, and Approved Documents L and J.
15% off a new boiler, fitted
The 15% comes off the price of a new boiler installation. We quote from photos of your old boiler, or after a free survey visit. Now is the time to replace an old or discontinued boiler.
Terms: 15% off everything in the price we quote for a new boiler installation. That means the boiler, its flue and controls, and the fitting. The offer is for installations booked by 31 December 2026. One offer per home, and not with any other offer.
Which Malvern do you have?
Every Malvern is a wall-hung condensing boiler with a fan, made between 1991 and 2007, most in a plain white case. The lamps on its front tell the models apart. Most models had a Servowarm twin, made by Malvern.
Malvern 30, 40 and 50
Its Servowarm twin
Servowarm HE30, Elite HE 40 and Elite HE 50
Type
Heats the radiators and a hot water cylinder
How to tell it
ON, PILOT, RUNNING and LOCKOUT lamps, on the first range, from 1991
Malvern 70, later the 70/80
Its Servowarm twin
Servowarm HE70 and Elite HE 74/80
Type
Heats the radiators and a hot water cylinder
How to tell it
The same four lamps, on a wider case
Malvern Condensing Combi, Mk1 and Mk2 (Single Control)
Its Servowarm twin
Servowarm Elite HE Combi
Type
Combi
How to tell it
ON and LOCKOUT lamps, a pressure gauge, and a switch for Off, Hot Water, and Heating and Hot Water
Malvern tentwenty (1020) and twentytwentysix (2026)
Its Servowarm twin
Servowarm Elite 21 Plus and Elite 21
Type
Heats the radiators and a hot water cylinder, on natural gas or LPG
How to tell it
Seven lamps in a row, on the models Malvern listed from 2004 to 2007
Malvern LOV and LSS, 30 to 70/80
Its Servowarm twin
None given
Type
Heats the radiators and a cylinder, made for social housing leases
How to tell it
The four lamps. The case may be a colour other than white
A Malvern Dbi Combi, from about 2005, is a later combi with no guide on Malvern's support page. Ring us, and we'll ask what its lamps show.
Not a Malvern? See every make, current and discontinued, by type.
Sources: Malvern's installation manuals, its parts lists, its support page, and its archived home and product pages.
Malvern lamps and what they mean
A Malvern boiler shows its state with lamps, not fault codes:
- ON, PILOT, RUNNING and LOCKOUT on the 30 to 70/80
- ON and LOCKOUT on the Condensing Combi
- seven lamps on the 1020 and 2026 (power, running, pump, fan, pilot, burner and lockout)
The first six panels below are the faults Malvern's papers explain. The last holds every lamp, model by model.
The LOCKOUT lamp is lit on a Malvern
What it means: A lit LOCKOUT lamp means a safety thermostat has stopped the Malvern. Either the flue got too hot, or the water overheated because too little was flowing. On a Condensing Combi, the lamp can also mean the boiler failed to light.
Possible causes on the 30 to 70/80, as the manuals list them:
- the flue thermostat
- the overheat thermostat
- the control thermostat
- then the sequence board
Possible causes on the Combi:
- the overheat cut-out
- the flue thermostat
- then the fan's supply and the ignition board
Possible causes on the 1020 and 2026:
- too little water flow, or the overheat thermostat
- then a blocked flue, the fan or the flue thermostat
- the flow and return pipes fitted the wrong way round
What you can do: reset once, the way your model's guide shows. Each model's steps are in the reset section below.
If it locks out again, ring us. We'll ask which lamps are lit.
A Malvern stopped by its condensate pipe, blocked or frozen
What it means: A blocked condensate pipe stops a Malvern as a safety measure. Every Malvern is a condensing boiler, with a drain pipe for the water it makes. When that pipe blocks or freezes, the boiler stops. The 30 to 70/80 starts again by itself once the blockage clears.
Possible causes, as the manuals list them: a blocked syphon or trap, or a frozen pipe outside. On the 1020 and 2026, the same lamps (power, running and pump) can also mean a blocked flue, the fan or its air pressure switch.
What you can do: in freezing weather, keep the outside drain free of ice, as Malvern's user guides ask. The safe checks for a frozen condensate pipe on any boiler are on the page on a boiler that won't fire up.
If it doesn't restart once the pipe is clear, ring us. Clearing the trap inside is an engineer's job.
A Malvern slow to fire, or doing nothing: the delay timer
What it means: A short wait before a Malvern fires is normal. A built-in delay timer holds the boiler for a few minutes after its own thermostat calls:
- about three and a half minutes on the 30 to 70/80
- two minutes on the 1020 and 2026, whose running lamp flashes slowly while it waits
A call from your programmer or room thermostat isn't delayed.
When it's a fault: on a 1020 or 2026, a running lamp still flashing after two minutes means the boiler is stuck in its delay. Switch the boiler's electricity off and back on, once.
If it sticks again, ring us. The manual's next step is the control board, an engineer's job.
The PILOT lamp is lit on a Malvern, but not RUNNING
What it means: A lit PILOT lamp with no RUNNING lamp is a pilot that hasn't lit. The Malvern tried with its automatic spark, and couldn't prove a flame. On a 1020 or 2026, the same fault shows as every lamp lit but burner.
Possible causes, as the manuals list them:
- no gas at the pilot
- then the spark's lead or electrode
- then the sequence controller or control board
- on the 1020 and 2026, the live and neutral wires the wrong way round
What you can do: see that the gas is on and your other gas appliances work, then reset once. A Malvern lights its pilot by itself, and no Malvern user guide gives steps for lighting one by hand.
If it won't light, ring us. If you smell gas, don't reset anything. Ring the National Gas Emergency Service on 0800 111 999.
No lamps at all on a Malvern, or the power lamp out
What it means: No lamps on a Malvern means no electricity is reaching it. On a 1020 or 2026, no lamps can also mean the fuse on its control board has blown. A Condensing Combi with no lamps may also have a timer with no power.
What you can do: see that the fused switch for the boiler is on. See too that the programmer and thermostats are on and calling for heat.
If the supply is on and the lamps stay out, ring us. The control board's fuse is inside the case, an engineer's job.
Low pressure on a Malvern Condensing Combi
What it means: Low pressure on a Malvern Condensing Combi shows on its gauge. Malvern's user guide asks for more than 1 bar when the boiler is cold, and says that below 0.5 bar the system needs re-pressurising.
What you can do: Malvern's guide says to have the system re-pressurised, and gives owners no steps for topping it up.
Ring us if the gauge reads low, or the pressure keeps falling. We'll ask what the gauge reads.
MoreEvery Malvern lamp, model by model
Every lamp Malvern's manuals give is below, model by model. Colours are left out, as Malvern's own papers disagree on them.
Malvern 30, 40, 50 and 70/80
ONPower is reaching the boiler and the controls are calling for heat. The lamp goes out when they are satisfied
What Malvern's papers give
Normal
ON, and nothing else for a few minutesThe built-in delay timer
What Malvern's papers give
Normal
PILOTThe fan is running and the pilot is being lit by a spark
What Malvern's papers give
Normal while it lights. PILOT with no RUNNING means the pilot hasn't lit
RUNNINGThe pilot flame is proved and the burner is alight
What Malvern's papers give
Normal
LOCKOUTThe flue thermostat or the overheat thermostat has tripped
What Malvern's papers give
Reset once, as below, then ring us
No change, with the fan runningThe air pressure switch hasn't proved the airflow, or the condensate trap is blocked
What Malvern's papers give
The trap, then the flue hood's air tapping, for an engineer
Malvern Condensing Combi
ON (called Running in the Mk2's manual)A call for heating or hot water. The lamp goes out when the call is satisfied
What Malvern's papers give
Normal
LOCKOUTThe overheat cut-out or the flue thermostat has tripped, or the boiler failed to light
What Malvern's papers give
Off and back on at the boiler. If it keeps locking out, ring us
No lampsNo electricity at the boiler, or its timer has none
What Malvern's papers give
The supply, then the timer, for an engineer
Malvern 1020 and 2026
Power, running, pump, fan, pilot and burnerFiring
What Malvern's papers give
Normal
Power and pump, with running flashing slowlyUp to temperature and waiting, for two minutes
What Malvern's papers give
Normal
Power and pumpThe heating is satisfied and the pump runs on, for two minutes
What Malvern's papers give
Normal
PowerNo call for heat
What Malvern's papers give
Normal
Running, with power outThe controls are calling, but the boiler isn't firing
What Malvern's papers give
The fuse on the control board
Power, pump and lockout (running may be lit)A safety thermostat has tripped, and the pump runs on
What Malvern's papers give
Reset once, as below. Then the water flow, the flue, the fan or the flue thermostat
Power, with the controls callingNo switched live from the controls
What Malvern's papers give
The controls' wiring
Power and runningNo power to the pump
What Malvern's papers give
The control board
Power, running and pumpThe air pressure switch isn't satisfied
What Malvern's papers give
A blocked condensate trap or flue, the fan or the switch
Power and pump, with running flashing for more than two minutesStuck in its delay
What Malvern's papers give
Mains off and back on, once. If it comes back, the control board
Power, running, pump and fanThe pilot valve isn't powered
What Malvern's papers give
The control board
Power, running, pump, fan and pilotThe pilot hasn't lit
What Malvern's papers give
No gas, or no spark or flame sensing: the board or the lead
Power, with the hidden light behind the knob litThe live and neutral wires are the wrong way round
What Malvern's papers give
Wiring, for an engineer
Power, running, pump, fan and pilot, with the hidden light behind the knob litThe pilot hasn't lit, as the live and neutral wires are the wrong way round
What Malvern's papers give
Wiring, for an engineer
The 1020 and 2026 manual says other mixes of lamps can show during a fault. Ring us, and we'll ask which are lit.
The causes here are listed as the manuals list them, with no ranking by how often they happen.
Sources: Malvern's user instructions and installation manuals for each model, dated from 1995 to 2007, from Malvern's support page, read on 11 October 2026.
How do you reset a Malvern boiler?
A Malvern is reset in one of three ways, by model, when its LOCKOUT lamp is lit:
- Malvern 30, 40, 50 and 70/80: press the reset switch beneath the boiler, at the place marked on the front. If it doesn't start, let it cool, then press it once more.
- Condensing Combi: turn the boiler off at its switch and back on. If it keeps locking out, ring us.
- 1020 and 2026: turn the boiler thermostat to off, then back on. If it doesn't start, let it cool, then try once more.
If it still won't run, turn the boiler and the programmer off and ring us. On the 1020 and 2026, the flue thermostat's own reset sits on the flue hood inside the case, so that's an engineer's job.
Keep the case on. Malvern's guides say there are no parts inside for owners, and the case must not be disturbed. Steam from the flue outside is normal for a condensing boiler.
If you smell gas, don't reset anything. Ring the National Gas Emergency Service on 0800 111 999.
Sources: Malvern's user instructions for each model, and the 1020 and 2026 installation manual.
Do you cover my part of London?
Yes: we cover all of Greater London, and we fit new boilers in place of Malverns in every borough north and south of the Thames. Pick your side of the river to see the areas.
North of the river
Every borough north of the Thames: Barnet and Enfield at the top, Hillingdon in the west, Havering in the east, and central London in between.
South of the river
Every borough south of the Thames: Richmond and Kingston in the west, Bexley in the east, and down through Croydon to Sutton and Bromley.
Malvern: your questions
Is Malvern still in business?
Yes, Malvern Boilers Limited is still in business, in Malvern, Worcestershire, but it no longer makes boilers for homes. It made its last at the end of 2007, and makes commercial appliances for other brands now. Its support page still sells parts for the home boilers it made.
Can I still get parts for a Malvern?
Parts for Malvern boilers are still sold by Malvern Boilers Limited, which says the spares for its home boilers are still stocked. Whether a given part is in stock on the day is Malvern's to say. If your Malvern has stopped, ring us. We'll ask which lamps are lit, and we can quote for a new boiler in its place.
Is a Servowarm Elite a Malvern?
Yes, a Servowarm Elite boiler is a Malvern. Malvern says it made its home boilers for both Malvern and Servowarm. Its parts lists pair each Servowarm model with its Malvern twin, such as the Servowarm Elite 21 Plus with the Malvern 1020.
Do Malvern boilers have fault codes?
No, Malvern boilers have no fault codes and no display. They show their state with lamps:
- ON, PILOT, RUNNING and LOCKOUT on the 30 to 70/80
- ON and LOCKOUT on the Condensing Combi
- seven lamps on the 1020 and 2026
How do I reset a Malvern boiler?
Resetting a Malvern depends on the model:
- On the 30 to 70/80, press the reset switch beneath the boiler.
- On the Condensing Combi, turn the boiler off and back on.
- On the 1020 and 2026, turn the boiler thermostat to off and back on.
If the LOCKOUT lamp comes back, ring us.
Is an old Malvern safe to keep using?
An old Malvern isn't unsafe because of its age alone. Gas Safe Register says an installation that doesn't meet today's standards isn't necessarily unsafe. An engineer judges a boiler by what they find. If a lamp keeps lighting, ring us. If you smell gas, or a carbon monoxide alarm sounds, ring the National Gas Emergency Service on 0800 111 999. What to do about gas and carbon monoxide.
Can you replace a Malvern in an emergency?
Yes, we fit emergency replacements, so a Malvern that has stopped can be replaced as an emergency. Ring us day or night, and we'll ask what the boiler is doing and say when an engineer can come.
What does a new boiler cost?
What a new boiler costs depends on the boiler, your home and what the job needs. Your quote, from photos or after a free survey visit, sets it all out in writing before any work starts. How our rates and quotes work.
Do I need to know which Malvern I have?
No, you needn't know which Malvern you have. Say what the boiler is doing when you ring, and we'll ask the rest. Photos of the boiler, its flue and where it sits help us quote for a new one.
Don't know what has failed? You don't have to.Ring and say what you can see or hear. Finding the fault is our job.
Calls answered 24 hours a day
A real person answers and gives you the rate on the call. No work starts until you say yes, and repairs are guaranteed for 12 months: parts, labour and any return visit.
