Viessmann · Vitodens 200-W Boilers
There is no domestic hot water heating because a short circuit has been detected in the outlet temperature sensor (if installed). This sensor measures the temperature of the hot water.
Click steps to track your progress.
Reset the appliance.
If the fault persists, contact a qualified technician to check the outlet temperature sensor and its connections.
Ensure the appliance has been reset correctly after the initial fault.