Dishwasher
Poor cleaning is often a blocked spray arm, filter or limescale rather than a mechanical fault.
Symptom: Cloudy glasses or food left on plates · Typical cost: £70–£160 if a part is needed.
Food or limescale blocks the holes.
The fix:Remove arms and clear holes.
The filter clogs.
The fix:Rinse the filter.
Limescale builds up without the softener salt.
The fix:Refill salt and rinse aid and run a descale.
Low pressure or low temperature reduces cleaning.
The fix:Test and replace parts.
£70–£160 if a part is needed.
If you can see leaks, smell burning, or the appliance is tripping the electrics, stop using it and unplug it. For minor faults without those signs it is usually safe to leave it off until you can diagnose it. Always switch off and unplug the appliance before inspecting it. Never work on gas appliances or fixed electrical wiring yourself — call a Gas Safe registered engineer or a qualified electrician.