Timer: this symbol is visible when timer is active or when one of time limits is active. Upon switching on, this
symbol appears for a couple of seconds as an information related to timer availability.
Alarm: this symbol is visible when alarm is active
UP/ON OFF during normal operation of controller: pressing it and holding down for more than 3 sec. will
cause a change to the controller operation ON/OFF; pressing and holding down this button and DOWN button
for more than 3 sec. will activate or deactivate continuous operation.
In the parameter setting mode: it enables switching to consecutive parameters. When setting
the parameter value: increases the parameter value.
SET/MUTE During normal operation of controller: it disactivates alarm sound; when it is pushed and
held down for more than 1 sec. it shows set-up point; when pushed and held down for more than 3 sec.
it will cause entering to parameter set-up menu; when this button and DOWN button are pushed and
held down simultaneously at the moment of powering controller, it will cause return to factory settings.
In parameter set-up mode: pushing this button causes change when displaying information: parameter name –
parameter value; when pushed and held down for more than 3 sec. it will cause recording parameters that have
been set up.
When setting the parameters: if pressed and held down for more than 3 sec. it saves the entered parameters.
DOWN/DEFROST During normal operation of controller: when pressed and held down for more than 3 sec.
it will cause activation/deactivation of manual defrosting; when this button and UP button are pressed and held
down simultaneously, it will activate or deactivate continuous operation; when it is pressed at the moment of
powering up it will display the software version; when this button and SET button are pressed and held down
simultaneously at the moment of powering up, it will cause return to factory settings.
In the parameter setting mode: press to return to the previous parameter. When setting the
parameter value: press to decrease the setting.
4.5.1. Displayed messages
In case of an alarm, the controller displays in turns: the relevant alarm code on the screen, the
current temperature. If acontroller is equipped with sound signal (which is on) and an
additional AUX output, then the sound signal and AUX output shall be activated.
All alarms are automatically reset (when the reason for alarm disappears), except CHt alarm
which is cancelled manually (the controller is disactivated through pushing UP button or
through isolation of circuit). Pushing SET button will disactivate sound effect; alarm code
and alarm relay will be still activated until the reason for alarm disappears.
The alarm codes are as follows:
FLASHING „E0”: damage to adjustment detector,
FLASHING „E1”: damage to evaporator detector or product detector,
FLASHING „E2”: damage to detector 3 or condenser,
FLASHING „IA”: external alarm,
FLASHING „dOr”: open-door alarm,
FLASHING „L0”: low-temperature alarm,
FLASHING „HI”: high-temperature alarm,
FLASHING „EE”: regulator internal error,
FLASHING „EF”: operation parameter error,
FLASHING „Ed”: defrosting completed because of the expiry of the
time limit
FLASHING „dF”: defrosting in progress,
FLASHING „cht”: contaminated condenser initial alarm,
FLASHING „cHt”: contaminated condenser alarm.
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