7 Low
Your boiler is currently running in a special testing mode used by engineers to check emissions, and it should return to normal operation automatically after a short period.
Technical description: Chimney sweep function is active
Typical repair cost: £0 (including labour)
DIY fix possible
Wait approximately 15 minutes for the test mode to time out automatically.Turn the selector switch or dial to the 'Off/Reset' position for a few seconds.Turn the selector back to the 'On' or 'Winter' position to resume normal heating.
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