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24 | Troubleshooting
8
Troubleshooting
8.1
Eliminating "sensed" faults
A "sensed" fault can have various causes, which
can usually be eliminated with simple steps.
If it is too cold or hot for you, the following table
will help you eliminate these "sensed" faults.
Problem
Required room
temperature not
achieved.
Heat-up takes too long. Heat-up speed set too low.
Required room
temperature greatly
exceeded.
Excessive room
temperature
fluctuations.
Tab. 6
Troubleshooting, Part 1
1) There is additional information in the operating instructions for the boiler
6 720 643 265 (2010/05)
Cause
Thermostats on the radiators are set
too low.
Heating levels set too low.
Supply temperature control
boiler set too low
Air in the heating system.
It may be that the solar optimization
for the assigned part of the heating
system is set too high.
Radiators become too hot.
Installation site of the remote control
unfavorable, e.g. external wall, close
to window, in a draft, ...
Temporary influence of external heat
on the room, e.g. through solar
radiation, lighting, TV, fireplace etc.
Remedy
Set thermostat(s) higher.
Set the desired room temperature
using the Heating levels menu
option for "Comfort".
1)
on the
Set the supply temperature
1)
control
Bleed radiators and vent the heating
system.
Call installer or customer service.
Heat-up speed e.g. too "Fast".
Set thermostatic valve(s) lower.
Set the desired room temperature
lower using the Heating levels menu
option for "Comfort".
Call installer or customer service.
Call installer or customer service.
US/CA
higher.
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