Version 5.2_2022 (January 26, 2022)
18
7.8.
Defrosting cycle:
Defrosting cycle is started manually via a push button. The first time the button is pressed, the defrosting
cycle of 10 minutes starts. After each press, 10 minutes are added. The time can be read from the display.
Pressing the push button for 5 seconds resets the defrosting cycle and restarts the standard control strategy.
During the defrosting cycle, the fan is reduced to a percentage of the speed set in the controller.
The defrosting cycle can also be set as a time schedule. Via the display, an ending time and eight different
start times can be set. The unit will then switch on at the set time and run for the set duration. It switches off
automatically (after the duration) and on again at the next set time.
7.9.
tERA Portal:
A tERA portal can be connected to the Carel controller. The tERA portal is a GPRS box that allows you to
read and operate everything remotely. It is also possible to log (graphs, tables).
7.10.
Control Technology error messages:
The display has the possibility to switch on three lights: green, orange and red. The various combinations are
error messages or confirmation of being in operation.
On
On
Off
Off
Off
Off
On
On
Off
Off
Off
Off
On
On
Off
Unit is on.
Works according
to settings.
Unit is on.
Non-urgent dirty
filter message.
Unit is off.
Dirty filter &
Urgent fault.
Unit is off.
Urgent fault.
Unit is switched
off.
7.10.1.
Dirty filter message | not urgent:
Delta-P switch over the filter. When pressure drop is too high, the switch will engage and illuminate an
orange light called 'Filter'.
7.10.2.
Error message:
All faults will be displayed via a red light called 'error'. These errors can be reset manually, automatically or
remotely (if a tERA box is present).
7.10.3.
Status message:
When the dual position start/stop switch is on and there is no urgent fault, it will be active. When there is an
urgent fault, the error light will be active and the status off (unit will switch off). In case of a non-urgent fault,
the fault and status message will be active and the unit will continue to run.
