BoilerFaultCodesWhat the manual says
Manufacturer manualResetting service functions 0.0 to 4.9 to their factory settings
What causes this fault?
This code appears when the boiler's control system has been manually triggered to clear custom adjustments and return to its original manufacturer configuration. It is usually the result of an engineer or homeowner navigating the menu to restore default performance levels or troubleshooting a software glitch. While the code is active, the boiler is simply recalibrating its internal logic to ensure it operates exactly as intended from the factory.
DIY fix possible
Wait for the boiler to complete the reset process naturallyOnce finished, the display should return to the normal temperature readingRe-adjust your heating and hot water temperature dials to your preferred levels if they have changed
Avoid the next call-out bill
A cover plan would handle faults like r1: no call-out fees, no surprise bills.
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