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Ideal Logic System IE Gen 2 fault F06

Outside sensor fault

Gas boiler

What it means

Fault related to the outside temperature sensor, requires diagnostic procedure in Section 4.10.

Likely causes

  1. Boiler mode set to Off on display
  2. CH Timer or Room Thermostat switched off
  3. Closed radiator valves
  4. No voltage supplied from Timer/Room Stat to SL1 IN (external wiring fault, not boiler fault)
  5. Missing link wire across OpenTherm connections when no OpenTherm Room Stat connected
  6. No 230V at SL2 IN when Outside Sensor connected
  7. Faulty wiring from terminal strip to PCB
  8. No voltage supplied from Timer/Room Stat wiring (external fault)
  9. Cylinder stat not calling for heat
  10. DHW timer switched off
  11. OFF shown under Tap symbol on display
  12. No 230V present at point (A)
  13. System controls or wiring fault
  14. Outside sensor wiring fault to PCB

Where to start

  1. Check if 'Off' is shown underneath the tap on the display
  2. Check if CH Timer and Room Thermostat are switched on
  3. Check if Radiator Valves are open

The full answer, free

  • 10 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 Gen 2. Check the model on the data plate before you order parts.

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