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Baxi Baxi 600/800/Assure System 2 and 600 Combi 2 platform fault H.02.04

PCB settings cannot be read

Gas boiler

What it means

Main PCB error - settings unreadable

Likely causes

  1. Main PCB configuration issue
  2. Main PCB fault

Where to start

  1. Configure CN1/CN2
  2. Press the F3 key
  3. Observe the info symbol flashing on the display

The full answer, free

  • 5 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 74), 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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