WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure
Mains Power On
To reset the service functions to factory settings follow the process below:

Measurement:

Step 1:
Press and hold the button marked with the picture
of a spanner for 10 seconds. The button will
illuminate orange and the display will show 1.A
Step 3:
Press the button marked ECO repeatedly until
8.E is present in the display.
Step 5:
Press and hold the chimney sweep button until
brackets appear in the display. The button can
then be released.
Step 7:
1. After air purge mode has completed the boiler will resume normal operation, display showing flow temperature.
2. Due to a factory reset the Siphon fill mode should return to normal operation, this being during the first CH demand or if the mains has been interrupted to the boiler.
BOILER RESET (FLOW TEMPERATURE DISPLAYED) - RETEST APPLIANCE
BOILER WILL NOT RESET AND SIPHON FILL SYMBOL REMAINS