Brand > Type > Error code > E.01.12

Error code:

E.01.12

Cause

Return temperature has a higher temperature value than the supply temperature

Supply and return interchanged:

Bad connection: check wiring and connectors

Flow direction wrong: check the flow (direction, pump, valves)

Badly mounted sensor: check whether the sensor is properly mounted

Malfunctioning sensor: check the resistance value of the sensor

Sensor defect: sensor vervang