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Baxi Baxi 600/800/Assure System 2 and 600 Combi 2 platform fault H.03.02

Temporary flame loss

Gas boiler

What it means

Flame signal temporarily lost, possibly due to electrode, gas supply, or flue issues

Likely causes

  1. Electrode connection/wiring issue
  2. Poor electrode condition
  3. Gas supply pressure issue
  4. Incorrect gas valve calibration
  5. Flue gas pipe/terminal issue
  6. Ionisation current below 4 µA
  7. Electrode worn
  8. Electrode distances out of range

Where to start

  1. Check the electrode connection and wiring
  2. Check the condition of the electrode
  3. Check the gas supply pressure

The full answer, free

  • 12 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 75), right under the answer
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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 Baxi manual for the Baxi 600/800/Assure System 2 and 600 Combi 2 platform. Check the model on the data plate before you order parts.

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