Digital Thermostat
M
-Therm HT- 08
For
M
-Therm 24 Volts heating systems
2 / 2
7
Enter weekly program
The programming of the thermostat is based on a 7-day/24-hour weekly program which can be set according to personal
preferences. The factory setting for comfort time is from 6 a.m. to 10 p.m. You can now change these settings according to your
personal wishes.
7.1 Turn the rotary switch to the respective weekday.
7.2 You can set every half hour of the day by means of the keys (+) and (-). The clock indicates the time you are programming.
7.3 Press the sun-key (for comfort temperature) or the moon-key (for lowered night temperature) to change the day or night setting.
For your guidance, the symbols you are currently working on are blinking in the display.
7.4 After having terminated the programming of all weekdays, set the rotary switch back to (RUN) and the thermostat will start to
operate its program.
8
Manual and temporary room temperature change without influencing the scheduled weekly programming
You can override the programmed room temperature if it is too cold or too warm at a specific moment. This override mode is
temporary and valid only until the next programmed change from (moon) to (sun) or vice versa.
8.1 Set the rotary switch to the position (RUN).
8.2 Press the key (+) or (-) and the current temperature setting will be displayed.
8.3 Press again the keys (+) or (-) to change the current temperature setting.
8.4 The display will be flashing for approx. 8 seconds and then returns to the main menu. The thermostat will start with the
temporarily set temperature until the next programmed change (from sun to moon or vice versa).
8.5 Turn the switch shortly away from (RUN) and immediately back again to (Run) to terminate the manual override and to return to
the scheduled programs.
9
Holiday mode
The automatic thermostat program can be permanently interrupted in order to set a constant temperature for an arbitrary period, for
instance during your holidays.
9.1 Set the rotary switch to the position (RUN).
9.2 Press the key (HOLD). The display shows "Temp Set“ and "Hold“.
9.3 Set the desired temperature with the keys (+) and (-).
9.4 After having terminated the temperature setting, the display continues flashing for approx. 8 seconds and then switches back to
the display of the ambient temperature. The „Hold“-temperature (temporary temperature) is not displayed. The thermostat will
start running the "holiday"-mode.
9.5 Turn the switch shortly away from (RUN) and immediately back again to (Run) to terminate the „Hold“-function and to return to
the scheduled programs.
10 Problem solving
Problem
Possible cause
Elimination of the cause
LED on the transformer shows a
permanent red light (heating
system out of operation)
Floor sensor (or resistance for the wall
heating) not or badly connected to the heating
control
Connect floor sensor (or resistance for the
wall heating) correctly (see heating control
manual)
LED on the heating control
keeps blinking red
(heating system out of
operation)
Device is overheating due to trapped heat
Elimination of erroneous obstruction of the
heating control
Device is overheating due to exterior heat
effects
Eliminate external heat effects due to
intensive solar radiation or other heat
sources (other devices)
System out of operation (LED
off)
Heating control switched off
Switch on the power on the device
Temperature selection on the room thermostat
too low
Set correct temperature on the room
thermostat
Overstrain of electrical circuit has blown main
fuse
Elimination of circuit overstrain. Disconnect
some devices on the same fuse. Switch on
main fuse
Fuse of the device has blown
Switch off the control unit. Replace fuse of
the device by a new one of the same type. If
the new fuse blows again after switching the
device on, consult an electrician or the
technical service of your sales point.
Individual heating elements do
not heat up
Overstrain in individual heating circuits has
blown heating circuit fuse(s).
Elimination of overstrain of the heating circuit
(not more than 2 heating panels per heating
circuit allowed). Then replace heating circuit
fuse.
Individual heating panels or heating circuits
are not connected
Set up correct electrical connections of the
heating circuits.
Heating does not switch on or off
Batteries in the thermostat are empty
Replace batteries