Vokera Pinnacle System fault E099

Reset attempts exhausted

Gas boiler

What it means

Indicates that the maximum number of consecutive unlocking/reset attempts (5) from the interface has been reached. The boiler will no longer respond to the reset key until power is cycled.

Likely causes

  1. Repeated fault condition not cleared by reset
  2. Underlying unresolved fault persisting
  3. Combustion conditions approaching upper emission limit
  4. Ionisation sensor signal indicating abnormal combustion

Where to start

  1. Identify and resolve underlying fault causing repeated lockouts
  2. Contact Technical Assistance Centre if attempts continue to fail
  3. Check ionisation sensor condition and position in burner flame

The full answer, free

  • 11 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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