Vokera Pinnacle System fault E011

Parasitic flame

Gas boiler

What it means

Fault indicating detection of a flame signal when no flame should be present (parasitic/false flame detection).

Likely causes

  1. Faulty flame detection electrode
  2. Gas valve leakage
  3. Control board fault
  4. Deterioration or damage of burner insulating panel
  5. Scale and combustion deposit buildup on heat exchanger coils
  6. Dirt residue inside heat exchanger reducing efficiency
  7. Oxidation or deposit buildup on burner affecting combustion

Where to start

  1. Check flame detection electrode
  2. Check gas valve for leakage
  3. Inspect ionisation circuit

The full answer, free

  • 4 more checks in order
  • The readings and component tests from the manual
  • How to put it right, step by step
  • The manual page for this fault (page 6), right under the answer

Safety: Isolate gas and power before you open the case. If you have been into the gas side, do a tightness test, and a combustion and flue check before you hand back. Gas Safe (UK) or RGI (Ireland) work only.

From the Vokera manual for the Pinnacle System. Check the model on the data plate before you order parts.

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