Technical description
Reset button has been pressed.
What causes this fault?
This code appears when the reset button on the front control panel has been pressed or held down, often by a user attempting to clear a previous error. It can also occur if the button becomes physically stuck in the housing or if it was held for too long during a restart attempt. In rare cases, it may indicate a momentary glitch where the control board incorrectly registers a button press.
DIY fix possible
Wait a few seconds for the boiler to complete its reboot cycleCheck if the display returns to the standard temperature readingIf the boiler was reset to clear a different fault, monitor to see if that original code returns