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28 | Troubleshooting
Problem Cause Remedy
Controller can only be
set to automatic mode.
Operating mode selector faulty. Contact authorised contractor or
customer service.
DHW cylinder does not
heat up.
DHW temperature controller
1)
set too
low on heating appliance.
Set DHW temperature controller
1)
higher.
Possibly reduce the solar
optimisation influence
2)
Flow temperature controller
1)
on
heating appliance set too low.
Set flow temperature controller
1)
fully clockwise.
DHW program incorrectly set.
Set DHW program.
The set System configurationfor DHW
heating does not suit this heating
system.
Contact authorised contractor or
customer service.
Heating on during the
night.
Heat-up optimisation
2)
starts the
heating early so that the home
reaches the required room
temperature by the set time.
Set a later time in the heating
program for the required room
temperature.
Contact authorised contractor or
customer service.
Tab. 9 Troubleshooting, part 2
1) Further information in the operating instructions of the heating appliance.
2) Further details in the full installation and operating instructions of the controller.
28


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