Ferroli Tempra Fault codes & diagnostics

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

Combi Natural Gas 24-28 kW 2005-2010 Discontinued
GC Numbers 41-267-1141-267-12

Replaced by: Ferroli Modena

Download the Ferroli Tempra manual The official installation & service manual (PDF) — the exact document these fault codes were verified against. PDF

This boiler uses LED flash patterns

Count the flashes in one repeating group before the pause. That number is your fault code. Do not reset until you have noted it. How to read fault codes →

Just want the most common Ferroli Tempra faults?
The top 6 problems in plain English — with causes, DIY checks and repair costs.
Fault codes

All 5 documented codes

Tap any card for details

LED / flash-pattern codes
5 (Flashing Light)

Your boiler has stopped working because the water pressure in your radiators has dropped too low to operate safely.

High DIY-safe £0-120

What to check first

  1. Locate the filling loop (a silver flexible hose usually underneath the boiler)
  2. Open the one or two taps on the hose slowly until you hear water flowing
  3. Close the taps once the pressure gauge on the boiler reaches between 1.0 and 1.5 bar

Parts commonly replaced

  • Filling loop valve
  • Expansion vessel
  • Pressure sensor
Full explanation for 5 (Flashing Light)
5 (Flashing)

Your boiler has stopped working because the water pressure inside the heating system has dropped too low.

High DIY-safe £0-120

What to check first

  1. Locate the filling loop (usually a silver braided hose with small valves) underneath the boiler.
  2. Slowly open the valves until you hear water flowing and watch the pressure gauge.
  3. Close the valves tightly once the needle reaches between 1 and 1.5 bar.

Parts commonly replaced

  • Filling loop
  • Pressure sensor
  • Expansion vessel
Full explanation for 5 (Flashing)
Digital codes
F1

Your boiler has failed to ignite, meaning it cannot create the flame needed to provide you with heating or hot water.

High DIY-safe £100-300

What to check first

  1. Check that your gas meter has credit and the isolation valve is open.
  2. Try to reset the boiler by pressing the 'Reset' button (or turning the knob to 'R' and back).
  3. Check if other gas appliances in your home, such as a hob, are working correctly.

Parts commonly replaced

  • Ignition Electrode
  • Gas Valve
  • Ignition PCB
Full explanation for F1
lockout light

Your boiler has safety-locked itself to prevent damage and simply needs a manual restart to try and fire up again.

High DIY-safe £100-280

What to check first

  1. Locate the main On/Off/Reset selector switch (marked A) on the control panel.
  2. Turn the switch clockwise against the spring tension to the 'Reset' position.
  3. Release the switch and wait for the boiler to attempt the ignition sequence.

Parts commonly replaced

  • Ignition Electrode
  • Gas Valve
  • PCB

Related codes

Full explanation for lockout light
Red lockout light

Your boiler has stopped working for safety reasons and needs a manual restart to try and restore heating and hot water.

High DIY-safe £100-350

What to check first

  1. Locate the selector switch (marked A) on the control panel
  2. Turn the switch to the 'RESET' position for approximately 2 to 3 seconds
  3. Turn the switch back to its original 'ON' position (summer or winter mode) and wait for the boiler to ignite

Parts commonly replaced

  • Ignition Electrode
  • Gas Valve
  • Overheat Thermostat
  • Printed Circuit Board (PCB)
Full explanation for Red lockout light
Status & diagnostic codes

4 operating states & engineer diagnostics

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

4 (Flashing Light) Status Your boiler is working correctly and is simply waiting for your thermostat to tell it to turn the heating on. 4 (Flashing) Status Your boiler is currently in standby mode for the central heating and is not actually reporting a fault. 4 (Permanent Light) Status Your boiler is currently operating normally to provide heating to your radiators. 5 (Permanent Light) Status Your boiler is receiving electrical power and is currently in standby mode or normal operation.