Daikin · Altherma Heat Pumps
If you have already checked the basic points (radiators, thermostat, power) and the system is still not operating as expected, a temporary internal fault might be preventing normal function. A full system reset may resolve this.
Click steps to track your progress.
Turn off the mains power supply to your entire Daikin Altherma heat pump system.
Wait for at least 60 seconds to allow the system to fully discharge.
Turn the mains power supply back on to reset the system.
Observe if the system now resumes normal operation.