POLYPOOL PP1465 User Instructions page 8

("HP:OFF"). To prevent the pump from blocking, the
pump protection function turns on the boiler for one
minute at 24 every day outside the heating season.
The pump protection works if the boiler is also on
during the summer. It is reasonable to set a low
temperature level on the thermostat during this
period, for example +10°C, to prevent unnecessary
starts to the boiler when the weather becomes
temporarily cold).