Error code
Ideal Boiler Fault Code F2
Flame detection has been lost during operation The most likely cause is intermittent gas supply issue. Check first: try the standard reset once if permitted by the manufacturer.
Quick answer
F2: Flame detection has been lost during operation
Meaning
Flame detection has been lost during operation
First safe check
Check the boiler manual for any user-level checks allowed for this code.
Stop if
Stop if the code returns after one safe check or the next step would require internal access.
Who to call
Repeated flame-loss faults should be assessed promptly by a Gas Safe registered engineer.
High severity: escalate quickly if it persists. Keep checks outside the casing and use only a manufacturer-approved reset where the manual allows it.
What does this error code mean?
Ideal boiler fault code F2 usually means the boiler lit initially or tried to run, but then lost flame detection and shut down for safety.
In practice, F2 is commonly linked to Intermittent gas supply issue, Flame sensing fault, or Combustion or control issue.
Start with this safe check: Check the boiler manual for any user-level checks allowed for this code. If the code returns, the fault worsens, or the appliance does not behave normally, repeated flame-loss faults should be assessed promptly by a Gas Safe registered engineer.
Why is this happening?
- Intermittent gas supply issue
- Flame sensing fault
- Combustion or control issue
How to fix this safely
- Check the boiler manual for any user-level checks allowed for this code.
- Try the standard reset once if permitted by the manufacturer.
- Stop using the boiler if the fault returns repeatedly.
Reset steps
- Use only the standard user reset process if the manual allows it.
- Arrange professional diagnosis if the flame fault returns.
When to call a heating professional
Repeated flame-loss faults should be assessed promptly by a Gas Safe registered engineer.
Safety warning
Do not attempt internal gas or combustion repairs. Persistent flame faults are not a DIY job.
Useful hub links
Related flame-loss fault codes
Relevant guide
Frequently asked questions
Can I keep resetting a Ideal boiler with F2?+
No. If F2 returns after one standard user reset, stop there and arrange a qualified engineer if the manual gives no safe next step.
Is F2 something I can repair myself?+
Boiler faults should be treated cautiously. Stay within the user checks in the manual, and leave gas, combustion, and internal boiler repairs to a qualified professional.