D.50 Low
This is a technical status message indicating the boiler is adjusting its fan speed settings and is not usually a hardware fault.
Technical description: Offset for minimum speed
Typical repair cost: £0-120 (including labour)
DIY fix possible
Check if the display returns to a standard temperature reading after a few minutesPerform a simple reset by pressing the 'Flame' or 'R' buttonMonitor the boiler to see if the code disappears during normal operation
Protect yourself from future repair bills
A boiler cover plan would cover faults like D.50 — no call-out fees, no surprises.
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Parts commonly replaced
- No parts usually required
- Printed Circuit Board (PCB) - only if code persists
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