Ariston NIMBUS AQUASLIM WH Technical Instructions For Installation And Maintenance page 44

Key/Display Operation
Fan speed control
Repeatedly pressing this key will change the speed with the following sequence: Minimum, Medium,
Maximum and Automatic.
The higher the set speed, the higher the device's performance (but also the louder the noise). If you
set the speed to Automatic (you will notice the 3 speed bars slide on the display), the micro-processor
will adjust the speed automatically (the higher the difference between the room temperature and the
set temperature, the higher the speed). The speed is reduced automatically as the room temperature
gradually reaches the set temperature. In dehumidification only mode and night comfort mode, you
cannot adjust the speed, as the unit can work only at low speed.
Setting the Timer function
The device's operating logic allows the user to freely programme when it is to switch on or off.
While the cooler-radiator is on, you can programme it to switch off by pressing the Timer key and then
setting the number of hours (from 1 to 24) after which the device is to switch to stand-by.
When the cooler-radiator is off, you can programme it to switch on by pressing the Timer key and then
setting the number of hours (from 1 to 24) after which the device is to switch on.
Next, press the enter key.
Touch-screen display keylock
To lock the keys, hold the Timer symbol on the touch-screen display pressed for 3 seconds. The
keylock will prevent the user from enabling or disabling any function on the display. The stand-by
symbol flashes intermittently every second.
To turn off the key-lock, press the Timer symbol again for 3 seconds on the touch-screen display.
Any selection from the remote control will deactivate the key-lock!
Alarms display
In the event of a malfunction, the display shows an alarm
code. The device will nonetheless continue to perform
Alarm displayed Cause
Room temperature probe
E1
(RT) failure
Internal battery probe IPT
E2
failure
E5
Indoor fan motor failure
Lack of communication with
E7
the display *
CP
Presence contact CP open
flashing
Incorrect water temperature In heating mode, the water temperature is below 30 °C.
flashing
Incorrect water temperature In cooling mode, the water temperature is above 20 °C.
EN / 44
certain functions (see OPERATION column).
Operation
It is possible to normally activate the Cooling, Dehumidification
and Heating modes.
It is possible to normally activate the Cooling, Dehumidification
and Heating modes.
You cannot activate any operating mode.
You cannot activate any operating mode.
The unit is enabled only if the contact is closed. Check the
connection of the terminals.