Key lock
Key Operation Display
When the increase and decrease keys are pressed simultaneously for 5 seconds, all
keys are locally locked; this is indicated by bL appearing on the display.
All actions are disabled to the user and whenever any key is pressed, "LOC" will appear.
To unlock the keys, repeat the sequence.
Reduce brightness to minimum
Deactivation
Switching off for long periods
When switching off for a season or for holidays, proceed
as follows:
- Deactivate the device
- Turn the general unit switch to off.
Key Operation Display
Press and hold the mode/off key for approx. 2 seconds. No illuminated signals on the
display at all means that the system is in stand-by (no operation).
On → Off
* If the board detects the water temperature probe on
the device, it starts in normal conditions. If the probe
is not connected, operation can be confirmed without
the probe by pressing the Heating/Cooling key for 5
seconds.
After 20 seconds from the last action, the panel brightness
will be reduced for improved night-time comfort, and the
room temperature will appear on the display.
If this brightness is still deemed to be disturbing, the display
can be switched off completely by pressing the Heating/
Cooling key for 20 seconds until the display shows .
To return to normal minimum brightness, press the
Heating/Cooling button for 20 seconds until the display
shows .
Error LED Display
Faulty room temperature (AIR) probe 6 LEDs flashing (alarm with automatic
reset).
Water temperature probe (H2) positioned in the main battery fault 2 LEDs
flashing (possible manual reset)*.
Problem with fan motor (e.g. blockage caused by foreign objects, faulty
rotation sensor). 4 LEDs flashing simultaneously (alarm with automatic reset).
Water demand (hot or cold) insufficient (above 20°C when cooling, below
30°C when heating).
The LED of the selected function flashes and the fan is stopped until the water
temperature reaches a suitable level to satisfy the demand.
Grill protection micro switch tripped due to accidental opening of the grill or
when filter cleaning is operating.
Error signals
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