Ideal Logic System IE fault FD

No water flow

Gas boiler

What it means

Boiler has detected no water flow through the system.

Likely causes

  1. Pump not rotating
  2. Faulty electrical connection to pump
  3. Loose connection to water flow sensor
  4. Faulty water flow sensor
  5. No water flow through boiler

Where to start

  1. Check if boiler and CH system are filled with water and all isolation and radiator valves open. If NO, fill and vent the system and open all isolation valves.
  2. If YES, turn power off and on - is the pump rotating? If NO, check pump and check electrical connection to pump.
  3. If YES, are connections to water flow sensor secure? If NO, re-fit connector.

The full answer, free

  • 1 more check in order
  • How to put it right, step by step
  • The manual page for this fault (page 54), 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 Ideal manual for the Logic System IE. Check the model on the data plate before you order parts.

Other Ideal Logic System IE fault codes