304
FAULT CODE
Ariston
Too Many Resets — 5 in 15 Minutes
Medium Severity
DIY Check Possible
The boiler has been reset 5 or more times within 15 minutes and has entered a protective lockout.
Step-by-Step Fix Guide
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Step 1
DO NOT press reset again
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Step 2
Turn the boiler off at the fuse spur for at least 2 minutes
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Step 3
Turn back on
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Step 4
If the boiler locks out again immediately, call a Gas Safe engineer — the underlying fault must be resolved
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.