EN
Symptom
A flashing
symbol appears on
the display within
one minute of the
Thermostat being
powered on.
A
symbol
appears permanently
(not flashing) on
the display.
Display is blank.
A flashing
symbol appears
on the display after
the Thermostat
being operating for
a period of time.
A flashing
symbol appears on
the display and the
room temperature
is replaced by "--"
16
TROUBLESHOOTING THE THERMOSTAT
Possible Cause
The Thermostat receives
power supply from the
heating appliance,
but no information.
Communication error due
to an interrupt or short
circuit in the link between
the heating appliance
and the Thermostat.
After installing the Thermostat
no power to the heating
appliance is supplied and
the rechargeable battery
hasn't been charged (takes
max 1hr until fully charged).
The power supply or
the communication link
between the Thermostat
and the heating appliance
has been interrupted
for more than 8hrs.
The heating appliance
is showing an error
Internal fault in the
temperature measuring circuit
Remedy
1) The Thermostat is not connected
to the correct terminals of the
heating appliance. Check if
the wiring is connected to the
OpenTherm connection terminals
of the heating appliance.
2) The heating appliance is
not configured correctly.
Contact your installer.
1) Check if the power supply
cable of the heating
appliance is connected.
2) Check the wiring.
3) Contact your installer.
Check if the power supply cable of
the heating appliance is connected
- otherwise contact your installer.
Check if the power supply cable of
the heating appliance is connected.
After the power is restored the
time may need to be adjusted -
otherwise contact your installer.
When you press the
button, you
will probably see an error code. This
fault code depends on the type of
heating appliance. Check the manual
of the heating appliance for more
information or contact your installer.
Contact your installer.