Cetetherm Mini Plus CM737
Installation, service and operating instruction
15
8
Operating the room thermostat CM737
8.1
Choosing the operating mode
The room thermostat can operate in three different modes; Automatic, Manual or Off.
To set the operating mode press either of the
AUTO
,
MAN
or
OFF
buttons. The screen indicates which mode is
currently active.
NOTE:
Cetetherm recommends the mode
MAN.
•
MAN (manual)
the room thermostat acts with a fixed set point throughout the day.
The set point can be adjusted from 5°C to 35°C by using the
or
buttons.
The thermostat will continue to maintain this temperature until another operating mode or temperature
is selected.
•
AUTO (automatic)
the room thermostat follows the built-in temperature program, default or modified.
A manually adjustment of the temperature with arrow “up” or “down” is only valid until next programmed
temperature change.
NOTE:
The built-in heating program has been designed to provide normal comfort requirements, but to
customise the settings please see
•
OFF
the room thermostat controls to a minimum temperature. Default setting of 5°C acts as a frost
protection for your home.
8.2
Temperature Enquiry with the Info-button (7)
Each value will be displayed for 3 second before returning to show the initial screen.
NOTE!
The initial screen shows different temperatures depending on if the outdoor temperature sensor is
connected and the setting of parameter 14:rC in the room thermostat.
•
Target room temperature - with outdoor compensation.
•
Current room temperature
– with room compensation.
Press ones on the info-button
, the display will show one of following three:
1.
EXT above the clock and a temperature.
The outdoor temperature sensor is installed correct and the controls
the heating.
Displayed temperature is present outside temperature, according to
the sensor.
Press ones more on the
Info
-button, in 3 seconds, to show the
supply temperature. Check that the temperature is reasonable buy
carefully touching the supply pipe.
2.
Flashing temperature and no EXT above the clock.
The temperature flashing is the set point according to room
compensation and the room thermostat controls the heating without
the outdoor temperature sensor.
Press ones more on the Info-button, within 3 seconds, to see the
value of the outdoor sensor.
3.
EXT above the clock and ---- instead of the outdoor
temperature.
This means that the outdoor sensor or its cable is damaged or not
connected.
Press ones more on the
Info
-button, in 3 seconds, to show the
supply temperature. Check that the temperature is reasonable buy
carefully touching the supply pipe.
