Operation Manual

6 720 645 350 (2010/09)
30 | Troubleshooting
8Troubleshooting
8.1 Troubleshooting “perceived” faults
“Perceived” faults may have different causes that
can, in most cases, be remedied with simple
steps.
For example, if you feel too cold or hot, the
following table will assist you in removing these
“perceived” faults.
Problem Cause Remedy
Required room
temperature not
achieved.
Thermostatic radiator valves set too
low.
Set thermostatic valve(s) higher.
Heating levels set too low.
Set required room temperature
higher in menu point Heating levels
for "Comfort".
Flow temperature controller
1)
set too
low on heating appliance.
Set flow temperature controller
1)
higher.
Possibly reduce solar optimising
influence
2)
Air lock in heating system. Bleed radiators and vent heating
system.
Heating up takes too
long.
Heating up speed set too low. Set Heating up speed e.g. to "Fast".
Required room
temperature greatly
exceeded.
Radiators become too hot. Set thermostatic valve(s) lower.
Set required room temperature
lower in menu point Heating levels
for "Comfort".
Installation location of controller
unfavourable, e.g. external wall, close
to window, in a draught etc.
Contact authorised contractor or
customer service.
Excessive room
temperature
fluctuations.
Temporary influence of external heat
on room, e.g. through solar radiation,
lighting, TV, fireplace etc.
Contact authorised contractor or
customer service.
Tab. 8 Troubleshooting, part 1
1) Further information in the operating instructions of the heating appliance.
2) Further details in the full installation and operating instructions of the controller.