
Select the required position using the Up/Down buttons or the Power button and then
press Enter to bring the unit to the required status (on/off). The procedure of the unit
turning on is the following:
the electric heater is turned off, the fan switches to low speed for heater cooling.
Synchronously, the green LED indicator blinks.
During this mode the excessive heat is removed from the heating elements to prevent
actuation of the overheat protection thermostats.
The units turns off in 2 minutes.
In case of actuation of any of the two overheat protection thermostats, in case of filter
contamination communicated by the differential pressure switch, in case of communication
loss the unit has an emergency shutdown. The electric heater cooling mode is activated
and turns off after 2 minutes. The red LED indicator lights up and a respective alarm
indicator is displayed:
FAILURE
or
To restart the unit, disconnect power supply and troubleshoot a failure.
31
or
VUT EH EC
VUT EH EC