Pump kick and diverter valve kick
Every 24 hours, if there is no heat demand from heating or DHW the pump will be started
for 10 seconds and the diverter valve will be opened and closed again.
This is done to prevent the pump and diverter valve from sticking.
Boiler anti-cycle time
If during a demand for central heating the burner switches o, because the desired flow
temperature is exceeded, there will be an anti-cycle time in operation for 5 minutes. This
means that the burner switches on again after 5 minutes if there is still a demand for the
heating.
Pump overrun
After the heating demand the burner will shut down and the pump will run for a further
60 seconds.
Service chimney sweep mode
To enter the service chimney sweep mode you hold the two + buttons for 6 seconds
When the flame symbol appears in the display, press both + buttons again for 6 seconds.
• The display shows the supply water temperature (appears in the display)
Press 1x the eco button; the display shows XX% (heating capacity)
Then with the + / - button for DHW you can go to a dierent load, anything between full
(100%) and low load (0%)
Turning o chimney sweep mode:
• Press the ESC button ( button)
• The device switches o
• The display shows for 2 seconds code 180 or 181
The chimney sweep mode lasts for 8 minutes
Scroll and + / − function
(ancillary function)
Full load for
emissions check
°C
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