Halstead Dimplex OV Fault codes & diagnostics

1 fault code with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.

Regular Natural Gas 15-30 kW 2006-2009 Discontinued

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All 1 documented codes

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No lightindication

Your boiler has lost all power, meaning it cannot produce heating or hot water because the electrical supply to the unit has failed.

High DIY-safe £100-£350

What to check first

  1. Check if other appliances in the house have power
  2. Inspect your main consumer unit (fuse box) to see if a circuit breaker has tripped
  3. Check the fused spur switch near the boiler to ensure it is switched on

Parts commonly replaced

  • Internal Glass Fuse
  • Printed Circuit Board (PCB)
  • External Fused Spur