Halstead Club HE 18 Fault codes & diagnostics

15 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.

Regular Natural Gas 18 kW 2006 onwards Discontinued
GC Number 41-260-20
Download the Halstead Club HE 18 manual The official installation & service manual (PDF) — the exact document these fault codes were verified against. PDF

The fault code is already on your display

Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →

Severity at a glance

Each cell = one fault code. Hover to identify.
1 Emergency 14 High
Versions & GC numbers

Which version do you have?

The GC number on your boiler's data badge identifies the exact appliance and production years, as recorded in the UK Product Characteristics Database.

GC number Appliance (register name) Produced
41-260-20 Club HE 18 2006–present
Just want the most common Halstead Club HE 18 faults?
The top 6 problems in plain English — with causes, DIY checks and repair costs.
Fault codes

All 15 documented codes

Tap any card for details

(No display)

Your boiler appears to have no power at all, meaning the control panel is blank and the unit will not start.

High DIY-safe £100-£350

What to check first

  1. Check if the main boiler power switch or fused spur on the wall is turned on.
  2. Inspect your home's main consumer unit (fuse box) to see if a circuit breaker has tripped.
  3. Check if other appliances in the same area have power to rule out a local power cut.

Parts commonly replaced

  • Internal Glass Fuse
  • Printed Circuit Board (PCB)
  • Transformer
Full explanation for (No display)
1

Your boiler has detected that the water is getting too hot or is not circulating properly, causing it to shut down for safety.

High DIY-safe £120-280

What to check first

  1. Check that all radiator valves are fully open.
  2. Ensure the central heating system pressure is between 1.0 and 1.5 bar.
  3. Try resetting the boiler to see if the fault clears.

Parts commonly replaced

  • Circulation pump
  • Flow/Return thermistors
  • Heat exchanger

Related codes

Full explanation for 1
2

Your boiler's electronic component is detecting a flame when it shouldn't or is failing a safety self-check, causing it to shut down for protection.

High Engineer only £120-280

Parts commonly replaced

  • Main PCB
  • Flame Sensing Electrode
  • Fan

Related codes

Full explanation for 2
3

Your boiler has tried to light itself five times without success and has now locked out for safety.

High DIY-safe £100-£250

What to check first

  1. Check that your gas emergency control valve is open and that other gas appliances are working.
  2. If you have a prepaid gas meter, ensure it has sufficient credit.
  3. Press the reset button on the front of the boiler once to restart the ignition sequence.

Parts commonly replaced

  • Ignition Electrode
  • Gas Valve
  • Flame Sensing Probe

Related codes

Full explanation for 3
4

Your boiler has sensed that the exhaust gases are becoming too hot, causing it to shut down automatically for your safety.

High Engineer only £120-280

Parts commonly replaced

  • Flue gas sensor
  • Heat exchanger
  • Main PCB

Related codes

Full explanation for 4
5

Your boiler has shut down because a temperature sensor is faulty or the main unit has become too hot to operate safely.

High Engineer only £120-280

Parts commonly replaced

  • Flow thermistor
  • Return thermistor
  • Flue sensor
  • Thermal fuse
  • Heat exchanger cleaning

Related codes

Full explanation for 5
6

Your boiler is still detecting a flame even after it should have turned off, which is a safety conflict that requires a professional inspection.

Emergency Engineer only £120-350

Parts commonly replaced

  • Gas Valve
  • Flame Sensing Electrode
  • Printed Circuit Board (PCB)

Related codes

Full explanation for 6
7

Your boiler has stopped working because its internal fan isn't spinning at the correct speed or the system cannot detect that it is running.

High Engineer only £180-350

Parts commonly replaced

  • Fan assembly
  • Printed Circuit Board (PCB)
  • Wiring harness

Related codes

Full explanation for 7
A

Your boiler has stopped working because its internal computer or the burner has encountered a serious communication error.

High Engineer only £250-450

Parts commonly replaced

  • Main PCB (Control Board)
  • Ignition Electrode
  • Gas Valve

Related codes

Full explanation for A
d

Your boiler has failed an internal safety check because it cannot detect a flame, causing it to shut down for protection.

High Engineer only £120-£350

Parts commonly replaced

  • Printed Circuit Board (PCB)
  • Gas Valve
  • Ignition Electrode

Related codes

Full explanation for d
E

Your boiler has lost its connection to its internal memory chip or cannot detect a flame, meaning it cannot operate safely.

High Engineer only £120-250

Parts commonly replaced

  • Boiler Chip Card (BCC)
  • Main PCB
  • Flame Sensing Electrode

Related codes

Full explanation for E
L

Your boiler has stopped working because of an internal electrical connection issue between its main control components.

High Engineer only £90-180

Parts commonly replaced

  • Low voltage wiring harness
  • Main PCB
  • Internal cabling connectors

Related codes

Full explanation for L
Lock out

Your boiler has stopped working because its internal electrical wiring is not sending messages correctly to the main control board.

High Engineer only £120-250

Parts commonly replaced

  • Low voltage wiring harness
  • PCB (Printed Circuit Board)

Related codes

Full explanation for Lock out
o

Your boiler is struggling to keep the water flowing properly, which is causing the flame to cut out shortly after it lights.

High Engineer only £150-250

Parts commonly replaced

  • Pump
  • Flow switch
  • Diverter valve

Related codes

Full explanation for o
P

Your boiler is struggling to operate because the electrical supply is unstable or too low, preventing the flame from starting safely.

High DIY-safe £100-350

What to check first

  1. Check if other electrical appliances in your home are flickering or underperforming
  2. Ensure the boiler is plugged directly into its fused spur and not an extension lead
  3. Reset the boiler by turning the control knob to the 'Reset' position for five seconds and then back to 'On'

Parts commonly replaced

  • Printed Circuit Board (PCB)
  • External Voltage Regulator
  • Transformer

Related codes

Full explanation for P
Status & diagnostic codes

2 operating states & engineer diagnostics

Not faults — these are normal operating states. Tap to expand.

C Status Your boiler is working exactly as it should and has successfully lit the burner for heating or hot water. h Status Your boiler has reached its target temperature and the burner has turned off while the pump continues to circulate water to cool the system down.