Set Appliance State:

WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

If required cancel purge cycle & reset boiler.
To disable DHW Preheat function, turn DHW temperature control to the preheat symbol then back to the required temperature setting. Once preheat is disabled the P icon will no longer be displayed.
Notes.
1. It may take several attempts to disable the preheat function.

2.When preheat is disabled LED next to tap symbol will also turn off.