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Ideal Logic System IE fault F3

Fan fault

Gas boiler

What it means

Boiler has detected a fault with the fan.

Likely causes

  1. Loose or deteriorated wiring connections between fan and PCB
  2. No continuity in fan wiring
  3. Faulty PCB
  4. Faulty fan
  5. Fan malfunction

Where to start

  1. Does the wiring from the Fan to the PCB have secure connections at both ends and has not deteriorated? Does the wiring have continuity? If NO, rectify wiring & connections.
  2. If YES, is there 230Vac at the Blue and Brown connections to the 3 way connection on the Fan? If NO, replace PCB.
  3. If YES, replace Fan.

The full answer, free

  • 1 more check 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 54), 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 Ideal manual for the Logic System IE. Check the model on the data plate before you order parts.

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