Fd checks
| Step | Check | If yes | If no / next |
|---|---|---|---|
| 1 | Reset button flashing? | Press reset for 3 seconds and release. The appliance restarts. If Fd remains, go to step 2. | Go to step 2. |
| 2 | PCB damaged | Note service settings, switch off, isolate power, replace the PCB, restore settings. |
Gas work stays with a Gas Safe registered engineer. These steps are guidance from the manufacturer sequence, not a substitute for the handbook.