Ideal Logic System IE fault F06

What it means

Boiler has detected a fault with the outside temperature sensor.

Likely causes

1. Outside sensor fault as referenced in Section 4.10
2. Boiler mode set to Off on display
3. CH Timer or Room Thermostat switched off
4. Radiator valves closed
5. No voltage supplied from Timer/Room Stat wiring (external fault)
6. Missing link wire across OpenTherm connections when no OpenTherm Room Stat connected
7. No 230V at SL2 IN when Outside Sensor connected
8. Faulty wiring from terminal strip to PCB
9. No voltage supplied from Timer/Room Stat to SL1 IN (external wiring fault, not boiler fault)
10. Cylinder stat not calling for heat
11. DHW timer switched off
12. OFF shown under Tap symbol (DHW mode disabled)
13. No 230V present at point (A)
14. Outside Sensor wiring fault from terminal strip to PCB
15. OFF shown under Tap symbol on display
16. System controls or wiring fault

Where to start

1. Refer to Section 4.10: Outside Sensor Fault
2. Check if 'Off' is shown underneath the tap on the display
3. Check if CH Timer and Room Thermostat are switched on