Makes we repair
What happened to Halstead?
Halstead boilers are no longer made. Glen Dimplex, which owned the business, stopped making condensing gas boilers in April 2012. Halstead Boilers Ltd was dissolved in November 2020.
Made in Essex from 1975
Halstead boilers were made in Halstead, Essex, from 1975, and Halstead Boilers Ltd, the company behind them, was set up in 1990.
Glen Dimplex from 2004
Glen Dimplex bought the company in 2004, moved the work to Prescot, near Liverpool, in 2009, and traded as Glen Dimplex Boilers.
The last boilers in 2012
Glen Dimplex stopped making condensing gas boilers in April 2012, and the older, non-condensing ranges had ended before that.
The company closed in 2020
Halstead Boilers Ltd was wound up by its members in 2019, solvent, and dissolved on 14 November 2020.
No maker supports Halstead boilers today. The Glen Dimplex Boilers website had gone by 2016, and we found no statement from anyone else about Halstead parts. We are an independent firm, with no connection with Halstead or Glen Dimplex.
We fit new boilers in place of Halsteads, quoted from photos or after a free survey visit. If yours has stopped, ring us, and we'll ask which range you have and what it shows.
Sources: Companies House on Halstead Boilers Ltd, and Halstead's and Glen Dimplex Boilers' own pages, as archived.
What's involved in replacing a Halstead?
Replacing a Halstead starts with a quote, from photos of the old boiler, its flue and where it sits, or after a free survey visit. The quote is in writing before any work starts. A quote made from photos is confirmed at a survey before the new boiler is fitted.
A condensing boiler in place of an older one: the Best, Hero, Quattro, Ace and Finest aren't condensing boilers. The Building Regulations ask more of a new gas boiler than those ranges were made to give, so a condensing boiler goes in their place.
An open flue: a floor-standing Buckingham CFF sends its fumes up a chimney. An Eden X or Ace HE can be fitted with an open flue kit. Replacing a boiler with an open flue changes the flue. We'll ask about the flue when you ring.
Sized to your home: our engineers size the new boiler with a heat loss calculation, and set its heating output to suit the home. They balance the radiators fully when it goes in. How combi, system and regular boilers differ.
What the rules ask of a new boiler: in England, a new gas boiler must meet a minimum efficiency, its ErP rating. Three more things come with it:
- one more energy saver on a new combi, such as weather compensation or a smart thermostat that learns and adjusts
- the heating cleaned and flushed, with inhibitor added
- a carbon monoxide alarm in the same room
The makes we fit most are Vaillant and Worcester Bosch, and we fit every make and model. The maker's own magnetic filter goes in where its guarantee asks for one. Nothing is fitted without your yes.
Need heat back sooner? We fit emergency replacements. Ring us, and we'll ask what the boiler is doing and say when an engineer can come.
Sources: Halstead's user instructions, 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 Halstead do you have?
Halstead made many ranges of gas boiler, wall-hung and floor-standing, and the range's name is usually on a badge on the front. These are the ranges whose user guides we could read, and the way each shows a fault tells them apart:
Best db 30 to 80
Type
Wall-hung cast iron boiler for the radiators and a cylinder, not condensing
Faults show as
Two neons: over-heat and ignition lockout
Hero 30 to 90
Type
Wall-hung cast iron boiler for the radiators and a cylinder, not condensing
Faults show as
Two neons: Burner On and Lock Out
Quattro and Quattro Gold
Type
Combi, not condensing
Faults show as
A green Burner ON neon and a red overheat neon
Ace and Ace High
Type
Combi, not condensing
Faults show as
Green LEDs and a red Lockout LED
Finest and Finest Gold
Type
Combi
Faults show as
Power and burner LEDs, and a red lockout LED that flashes or stays lit
Finest Platinum
Type
Combi, not condensing
Faults show as
A Reset button with a red light, and two codes on four LEDs
Eden X CBX and SBX
Type
Condensing combi (CBX) and system boiler (SBX)
Faults show as
A code on four LEDs
Eden X VBX
Type
Condensing boiler for the radiators and a cylinder
Faults show as
A one-digit display
Ace HE
Type
Condensing combi
Faults show as
A one-digit display
Club HE
Type
Condensing system boiler
Faults show as
A one-digit display
Buckingham 4 CFF and BFF
Type
Floor-standing cast iron. The CFF's flue runs up a chimney
Faults show as
Burner ON and Reset neons
Balmoral 45F, 55F and 65F
Type
Wall-hung, with a pilot lit by a spark
Faults show as
No lights
A Wickes boiler may be a Halstead. Halstead's own spares lists match these Wickes models to its ranges:
- the Wickes 82 and 102 to the Ace
- the Wickes 90 to the Finest
- the Wickes Heat 40 and 60 to the Hero
- the Wickes LW cast iron models to the Best
Older names, such as the first Eden, the Bentley, the Blenheim and the iHeat, have no guide we could read. Ring us, and we'll ask what yours shows. Not a Halstead? See every make, current and discontinued, by type.
Sources: Halstead's user instructions, its product list and its stock and spares lists, as archived from its old website.
Halstead fault codes and lights, range by range
A Halstead shows a fault in one of four ways, by range:
- neons or LEDs on the older ranges
- a code on four LEDs on the Eden X CBX and SBX
- one digit on the Eden X VBX, Ace HE and Club HE
- a neon or nothing on the Buckingham and Balmoral
The same character means different things on different ranges, so each code here is named with its range.
The first six panels below are the faults Halstead's user guides explain. The last three hold every light and code.
A Halstead ignition lockout: it won't light
What it means: An ignition lockout means the Halstead tried to light and couldn't prove a flame. The sign depends on the range:
- the ignition lockout neon on a Best
- the green neon staying dark on a Quattro
- the red Lockout LED on an Ace
- the red LED flashing on a Finest
- the code 0011 (or 0010 for no gas) on an Eden X CBX, SBX or Finest Platinum
- the code 3 on an Eden X VBX, Ace HE or Club HE
- the Reset neon on a Buckingham
Possible causes, as the manuals list them: no gas or low gas pressure, then no flame signal on lighting.
Also on a Best:
- the fan
- the air pressure switch (a blocked flue or air duct)
- the gas valve
- the spark
- the flame sensor
- the ignition device
Also on a Hero: air in the gas pipe, then a fault inside.
What you can do: see that the gas is on and your other gas appliances work. Then reset once, the way your range's guide shows. See every range's reset.
If it locks out again, ring us. If you smell gas, don't reset anything. Ring the National Gas Emergency Service on 0800 111 999.
A Halstead has overheated
What it means: An overheat means the water in the Halstead got too hot and a safety device stopped it. Each range shows it in its own way:
- the over-heat neon on a Best
- the LOCK OUT neon on a Hero
- the red neon on a Quattro
- the red LED on an Ace
- a steady red LED on a Finest
- the code 1 on an Eden X VBX, Ace HE or Club HE
- the code 0001 on an Eden X CBX, SBX or Finest Platinum
Possible causes, as the manuals list them:
- too little water
- too little water flowing
- the overheat thermostat
- a sensor or the boiler's own thermostat
The Eden X and Ace HE guides put the trip above 105 degrees.
What you can do: let the boiler cool, then reset once, the way your range's guide shows. Several ranges have an overheat button of their own:
- on an Ace or Finest, underneath at the left
- on a Quattro, on top at the left
- on a Quattro Gold, underneath at the rear
- on a Balmoral, under the control box cover
If it trips again, ring us. The Best's guide asks for an engineer to check the boiler and system even if it runs on.
Falling pressure on a Halstead combi or system boiler
What it means: Falling pressure on a Halstead's gauge can mean a water leak. The guides give about 1 bar when the boiler is cold, or 1 to 2 bar on the Finest Platinum. They add that a fall over time may mean water is escaping.
What you can do: Halstead's guides give owners no steps for topping up. They say to ask a registered engineer, and not to fire the boiler if the pressure has fallen to zero.
Ring us if the pressure keeps falling. We'll ask what the gauge reads.
A water flow failure on a Halstead
What it means: A water flow failure means too little water is flowing through the Halstead, or its sensors read a wrong temperature difference. The range decides what you see:
- the code 0 on an Ace HE or Club HE
- the code 1010 on an Eden X CBX or SBX
- the code 2 on an Eden X VBX
- a flashing Power On LED on an Ace or Ace High, whose flow switch has failed
What you can do: nothing at home, as these aren't among the codes the guides let you reset.
Ring us. We'll ask which code or light is showing.
No lights and no display on a Halstead
What it means: No lights and no display on a Halstead means no power is reaching it, the guides say.
What you can do: see that the fused switch for the boiler and the boiler's own switch are on.
If they are on and it stays dark, ring us.
A Halstead's flue gas is too hot
What it means: Flue gas too hot means the gas leaving a condensing Halstead went above 95 degrees. It shows as 4 on an Eden X VBX, Ace HE or Club HE, and 0100 on an Eden X CBX or SBX.
What you can do: the Ace HE and Club HE guides let you reset codes 1 to 4, but the cause needs an engineer.
MoreEvery light on the Best, Hero, Quattro, Ace, Finest, Buckingham and Balmoral
The older Halstead ranges show faults with neons and LEDs, each range its own way, as their user guides give them.
Best
Light
Ignition lockout neon
What it means
The boiler failed to light
What its guide says
Wait 15 seconds, then press the ignition reset once
Best
Light
Over-heat neon
What it means
An overheat
What its guide says
Once cool, press the ignition reset. An engineer should check the boiler and system
Best
Light
Both neons, after a power cut
What it means
The power went off while it was hot
What its guide says
Let it cool, switch the power off and on, then press the ignition reset
Hero
Light
Burner On neon
What it means
The burner is alight
What its guide says
Normal
Hero
Light
No neon, and not alight
What it means
The controls aren't calling, or it is waiting after reaching temperature
What its guide says
See the controls are on, and give it a few minutes
Hero
Light
Won't light
What it means
No gas or low gas pressure, air in the gas pipe, or a fault inside
What its guide says
Thermostat fully anticlockwise to RESET, wait 30 seconds, then follow its lighting steps again
Hero
Light
LOCK OUT neon
What it means
An overheat
What its guide says
Thermostat to Stand-By for 30 seconds, then back on. Ring us if it comes back
Quattro and Quattro Gold
Light
Green Burner ON neon
What it means
The burner is alight
What its guide says
Normal
Quattro and Quattro Gold
Light
Fan running, green neon dark
What it means
An ignition lockout
What its guide says
Wait 15 seconds (5 on the Gold), then press the ignition reset once
Quattro and Quattro Gold
Light
Red neon
What it means
An overheat, or a power cut while the burner was alight
What its guide says
Let it cool, then press the overheat reset once: on top at the left (Quattro), underneath at the rear (Gold)
Ace and Ace High
Light
Red Lockout LED
What it means
An ignition lockout, or an overheat
What its guide says
Turn the main switch through to Reset. If it lights again, press the overheat button underneath at the left, then reset again
Ace and Ace High
Light
Power On LED flashing
What it means
The heating's water flow switch has failed
What its guide says
Ring us
Finest and Finest Gold
Light
Red LED flashing
What it means
An ignition lockout after three tries
What its guide says
Power off for ten seconds, then back on
Finest and Finest Gold
Light
Red LED lit and steady
What it means
A fault, an overheat among them
What its guide says
Power off for ten seconds, and press the overheat button underneath at the left
Finest Platinum
Light
0001 or 0011 on the four LEDs, with Reset held for three seconds
What it means
An overheat (0001), or an ignition failure (0011)
What its guide says
Press Reset briefly
Buckingham 4 CFF
Light
Reset neon
What it means
A lockout
What its guide says
Temperature control to 0, wait 30 seconds, then follow its lighting steps again
Balmoral
Light
No lights
What it means
It won't relight after a power cut, or shuts down when it should be on
What its guide says
Let it cool, then press the overheat cut-out button under the control box cover. If it keeps needing that, ring us
MoreEvery code on the Eden X CBX and SBX: four LEDs
An Eden X CBX or SBX shows its fault on four LEDs. Its Reset button's light is blue while the burner is lit, and steady red in a lockout. Holding Reset for three seconds lights LEDs 1 to 4 as the code, and a lit LED reads 1. The Finest Platinum's guide gives two of these codes, 0001 and 0011.
0001
Fault
Overheated
Reason given
The water went above 105 degrees
0010
Fault
No gas, no flame
Reason given
Low gas pressure
0011
Fault
Lockout after five tries at lighting
Reason given
No flame signal on lighting, or the flame lost while running
0100
Fault
The flue gas sensor
Reason given
The flue gas went above 95 degrees
0101
Fault
A faulty sensor
Reason given
The flow, return or flue sensor
0110
Fault
A faulty gas valve
Reason given
A flame still sensed 5 seconds after the burner switched off
0111
Fault
A faulty fan
Reason given
No speed signal, or the wrong one
1000
Fault
A memory fault
Reason given
An error in the board's stored data
1001
Fault
A power supply fault
Reason given
Low mains voltage
1010
Fault
A water flow failure (a flame for a short time)
Reason given
The sensors' temperature difference is wrong
1011
Fault
A board fault
Reason given
An internal error
1100
Fault
A control card fault
Reason given
The boiler control card is wrong or missing
1101
Fault
A differential check fault (a flame for 15 seconds)
Reason given
The zero check failed, hot water or heating
1110
Fault
Activate the control card
Reason given
A new boiler control card
1111
Fault
A safety system failure
Reason given
The internal self-check failed
0000
Fault
Hot water cold
Reason given
The hot water turbine or the diverter valve
0000
Fault
No lights
Reason given
The power supply
0000
Fault
No flame
Reason given
A faulty connector
MoreEvery code on the Eden X VBX, Ace HE and Club HE: one digit
The Eden X VBX, Ace HE and Club HE show one character, and the same character can mean different things on each. An h is normal on an Ace HE or Club HE, where the pump is running on, but it's a fault on a VBX.
In normal running, the displays show these:
- a VBX shows o at standby, h when turned on and H when called
- an Ace HE or Club HE shows o at standby, and c then C for heating
- an Ace HE also shows H for hot water
A dot means the burner is lit, and a flashing H or C is the engineer's service mode.
Eden X VBX
1
Fault
Overheated
Reason given
The water went above 105 degrees
2
Fault
A water flow failure, or a differential check fault
Reason given
The sensors' temperature difference is wrong
3
Fault
No gas, or a lockout after five tries at lighting
Reason given
Low gas pressure. No flame signal, or the flame lost
4
Fault
The flue gas sensor
Reason given
The flue gas went above 95 degrees
5
Fault
A faulty sensor
Reason given
The flow, return or flue sensor
6
Fault
A faulty gas valve
Reason given
A flame 5 seconds after switching off
7
Fault
A faulty fan
Reason given
No speed signal, or the wrong one
A
Fault
A board fault
Reason given
An internal error
b
Fault
Activate the control card
Reason given
A new boiler control card
C
Fault
A safety system failure
Reason given
The internal self-check failed
E
Fault
A control card fault
Reason given
The boiler control card is wrong or missing
h
Fault
No flame
Reason given
A faulty connector
O
Fault
A differential check fault (a flame for 15 seconds)
Reason given
The water's flow rate is too low
P
Fault
A power supply fault
Reason given
Low mains voltage
Nothing
Fault
No display
Reason given
The power supply
Ace HE and Club HE
1
Fault
Overheated
Reason given (Ace HE)
The water went above 105 degrees
On the Club HE
The same
2
Fault
A differential check fault (a flame for 15 seconds)
Reason given (Ace HE)
The zero check failed, hot water or heating
On the Club HE
Heating alone
3
Fault
No gas, or a lockout after five tries at lighting
Reason given (Ace HE)
Low gas pressure. No flame signal, or the flame lost
On the Club HE
The same
4
Fault
The flue gas sensor
Reason given (Ace HE)
The flue gas went above 95 degrees
On the Club HE
The same
5
Fault
A faulty sensor or thermal fuse
Reason given (Ace HE)
The flow, return, hot water or flue sensor, or the thermal fuse
On the Club HE
The flue sensor or the thermal fuse
6
Fault
A faulty gas valve
Reason given (Ace HE)
A flame 5 seconds after switching off
On the Club HE
The same
7
Fault
A faulty fan
Reason given (Ace HE)
No speed signal, or the wrong one
On the Club HE
The same
A
Fault
A board fault
Reason given (Ace HE)
An internal error
On the Club HE
The same
b
Fault
Activate the control card (where fitted)
Reason given (Ace HE)
A new boiler control card
On the Club HE
The same
d
Fault
A safety system failure
Reason given (Ace HE)
The internal self-check failed
On the Club HE
The same
E
Fault
A control card fault (where fitted)
Reason given (Ace HE)
The boiler control card is wrong or missing
On the Club HE
The same
0
Fault
A water flow failure (a flame for a short time)
Reason given (Ace HE)
The sensors' temperature difference is wrong
On the Club HE
The same
P
Fault
A power supply fault
Reason given (Ace HE)
Low mains voltage
On the Club HE
The same
u
Fault
Hot water cold
Reason given (Ace HE)
The hot water sensor
On the Club HE
A lockout: the low voltage wiring
Nothing
Fault
No display
Reason given (Ace HE)
The power supply
On the Club HE
The same
In each panel, the causes run in the manuals' order. The order isn't a ranking of how often they happen.
Sources: Halstead's user instructions and installation manuals for each range, dated from 1994 to 2006, as archived from its old website, read on 11 October 2026.
How do you reset a Halstead boiler?
A Halstead is reset its own way on each range, once, as its user guide shows:
- Best: wait 15 seconds, then press the ignition reset button once.
- Hero: turn the thermostat fully anticlockwise to RESET, wait 30 seconds, then follow its lighting steps again. After an overheat, turn it to Stand-By for 30 seconds, then back on.
- Quattro: wait 15 seconds (5 on the Quattro Gold), then press the ignition reset button once.
- Ace and Ace High: turn the main switch through to Reset, and it springs back.
- Finest and Finest Gold: turn the power off for ten seconds, then back on.
- Finest Platinum, Eden X CBX and SBX: press the Reset button briefly.
- Eden X VBX, Ace HE and Club HE: turn the knob fully anticlockwise to RESET/STANDBY and straight back to ON, inside two seconds. The Ace HE and Club HE guides allow this for codes 1 to 4. For any other code, ring us.
- Buckingham 4 CFF: turn the temperature control to 0, wait 30 seconds, then follow its lighting steps again.
If it fails again, ring us. Every Halstead range lights itself, so there is no pilot to light by hand. The guides give owners no steps for topping up the pressure.
Leave the case on, and keep the flue terminal and any vents clear. A plume of steam from a condensing Halstead's flue is normal, and its condensate drain must not be altered or blocked.
If you smell gas, don't reset anything. Ring the National Gas Emergency Service on 0800 111 999.
Sources: Halstead's user instructions for each range.
Do you cover my part of London?
Yes: we cover all of Greater London, and we fit new boilers in place of Halsteads 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.
Halstead: your questions
Is Halstead still in business?
No, Halstead is no longer in business. Halstead Boilers Ltd was dissolved on 14 November 2020. Glen Dimplex, its last owner, stopped making condensing gas boilers in April 2012. No maker supports Halstead boilers today.
Is there an open-flued Halstead?
Yes, open-flued Halsteads exist. The floor-standing Buckingham 4 CFF sends its fumes up a chimney. An Eden X or Ace HE can be fitted with an open flue kit, which needs an air vent in the same room. Most other Halsteads are room-sealed, with a balanced flue. If yours has an open flue, we'll ask about it when you ring for a quote.
Can you still get Halstead parts?
Halstead parts have no maker behind them today. The Glen Dimplex Boilers website had gone by 2016, and the company was dissolved in 2020. We found no statement from anyone else about parts. We fit new boilers in place of Halsteads, quoted from photos or after a free survey visit. Ring us, and we'll ask which range you have.
Are Wickes boilers made by Halstead?
Some Wickes boilers are Halsteads under another name. Halstead's own spares lists show which:
- the Wickes 82 and 102 match the Ace
- the Wickes 90 matches the Finest
- the Wickes Heat 40 and 60 match the Hero
- the Wickes LW cast iron models match the Best
What does code 3 mean on a Halstead?
Code 3 on a Halstead Eden X VBX, Ace HE or Club HE means no gas, or a lockout after five tries at lighting. See that the gas is on and your other gas appliances work. Then reset once, by turning the knob fully anticlockwise to RESET/STANDBY and straight back to ON. If 3 comes back, ring us.
What does a flashing red light mean on a Halstead?
A flashing red LED on a Halstead Finest or Finest Gold means an ignition lockout after three tries. Turn the power off for ten seconds, then back on. A steady red LED on the same boilers means a fault, an overheat among them. On an Eden X CBX or SBX, a steady red Reset button means a lockout. Its code shows on four LEDs when you hold Reset for three seconds. If a red light comes back, ring us.
Can I top up a Halstead's pressure myself?
Topping up a Halstead's pressure isn't in its user guides. The guides say to ask a registered engineer if the pressure falls, and not to fire the boiler if it has fallen to zero. Ring us, and we'll ask what the gauge reads.
What does a new boiler cost?
The cost of a new boiler 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 Halstead I have?
No, you don't need to know which Halstead you have. Ring and say what the boiler is doing, 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.
