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▶ Prevent water from escaping.
▶ Position DHW temperature sensor correctly.
▶ If current is not being supplied to the 3-way valve, there is a problem in the cable between the control panel and valve. Check screw terminals and cables.
▶ If current is being supplied to the 3-way valve but it is still not working, the valve is faulty and must be replaced.
▶ If a voltage of approx. 230 V is measured at the terminals and the pump is not running, the pump is faulty and must be replaced.
▶ Eliminate all faults in the cables. Vent if necessary.
▶ Replace the pump if there are any deviations whatsoever.
▶ Set the DHW heating to "Priority".
▶ If readings are different in the values in the table, replace the sensor.