5P2
FAULT CODE
Ariston
Second Ignition Failed (Warning)
Medium Severity
DIY Check Possible
The second ignition attempt has also failed. The boiler may escalate to a 501 lockout.
Cold Weather Note
Check condensate pipe in cold weather.
Step-by-Step Fix Guide
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Step 1
Check gas supply
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Step 2
In cold weather, check condensate pipe
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Step 3
Reset the boiler
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Step 4
If fault persists, call a Gas Safe engineer
Gas Safe Reminder
Work on gas appliances must be carried out by a Gas Safe registered engineer. The steps above cover safe checks a homeowner can perform - any internal component replacement requires a qualified professional. If in doubt, always call an engineer.