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HomeMatic HM-CC-RT-DN Manual

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19.5 Minimum setpoint temperature
A minimum setpoint temperature of 4.5°C is set in the
factory settings. The minimum setpoint temperature (4.5
to 25.0°C) can be adjusted via the WebUI.
19.6 Valve error position
If an empty battery has not been recognized, the radia-
tor thermostat moves back into a „valve error position“.
This avoids, that the set temperature in the room incre-
ases due to a low battery. A valve error position of 15 %
is set in the factory settings. The value can individually
be adjusted (0 to 100 %) via the WebUI.
19.7 Valve offset
If several radiators in one room are operated with a
HomeMatic Radiator Thermostat some radiators may
heat more than others. In certain cases, some radiators
might be hot while others are still cold. To compensate
this, a valve offset can be set for the radiator thermostat
that is mounted on the cold radiator. A valve offset of
0% is set in the factory settings. The value can individu-
ally be adjusted (0 to 100 %) via the WebUI.
20 Troubleshooting and
maintenance
Error
code on
the dis-
play
Problem Solution
F1 Valve drive sluggish Check the installation;
check whether the pin on
the heating valve is stuck
F2 Actuating range too
wide
Check the fastening of the
actuator
F3 Actuating range too
narrow
Check the heating valve;
check whether the valve
pin is stuck
F4 Conictduringtea-
ching-in: CCU has al-
ready been taught-in
Delete radiator thermostat
from CCU; perform teach-
out function
F6 Conictduringtea-
ching-in: max. number
of 7 radiator thermo-
stats already taught-in
perform teach-out function
F7
Conictduringtea-
ching-in: max. number
of 8 window contacts
already taught-in
perform teach-out function
F8 Conictduringtea-
ching-in: no more de-
vices can be taught-in
perform teach-out function
Battery symbol battery voltage too
low
replace batteries of
radiator thermostat
Battery symbol
+ F9
battery voltage too
low, valve moved to
error position
replace batteries of
radiator thermostat
… 49 …


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