Set Appliance State:

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

Observation:

Which demand is showing on the display?
  • Central Heating > Radiators xx°C > High Efficiency displayed.
  • Hot Water > Temperature xx°C > High Efficiency displayed.
  • Boiler Frost protection > Temperature x°C > High Efficiency displayed.
  • Preheat > Temperature xx°C > High efficiency displayed.