BoilerFaultCodesWhat the manual says
Manufacturer manualTemporary flame loss. Boiler will self reset, if fault continues you will see 3 red flashes.
What causes this fault?
This fault occurs when the boiler's internal sensors detect that the flame has unexpectedly gone out while the unit was supposed to be firing. The most common reasons include a slight instability in the gas supply or a build-up of carbon on the sensor that monitors the flame. Because it is often caused by a fleeting disruption, the boiler will attempt to relight itself automatically before locking out.
DIY fix possible
Monitor the boiler to see if it clears the fault and restarts automaticallyIf the fault persists and turns into a solid red light, try a manual resetCheck that your gas pre-payment meter (if applicable) has credit
Avoid the next call-out bill
A cover plan would handle faults like 3 green flashes: no call-out fees, no surprise bills.
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