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Ideal Logic System IE fault F17

Pump fault

Gas boiler

What it means

Boiler has detected a fault with the pump.

Likely causes

  1. Faulty pump wiring
  2. Faulty pump
  3. System not filled/vented
  4. Closed valves
  5. Excessive flow/return differential
  6. Pump not rotating freely
  7. Isolation valves closed
  8. Pump not operating
  9. Radiator valves closed
  10. System blockages
  11. Pump not operating (wiring fault or pump failure)
  12. System blockage restricting flow
  13. Thermistor fault requiring replacement
  14. Faulty or failed return thermistor requiring replacement

Where to start

  1. Check pump wiring
  2. Verify boiler and CH system filled with water
  3. Verify all isolation, system filter and radiator valves are open

The full answer, free

  • 36 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 49), 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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