WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On
This diagnostic model requires the boiler to have some initial settings,
these will remain the same unless stated otherwise in "Set Appliance State".
Initial settings are shown in fig 1.
1. ON / OFF SWITCH
Set ON/OFF switch to ON (recessed position).
2. OPERATING MODE
Select CH & DHW operation by pressing the MODE button until both
DHW and CH symbols are illuminated.
3. TEMPERATURE SETTING CH
Press the + & - buttons under the       symbol to adjust temperature to
  • CH temperature 75 - 80°C MAX (75°C is factory default setting).