
Designation: AIR CONDITIONER FOR ELECTRICAL ENCLOSURE Page 13/20
UMA-CDZ-IP-ACIRM200-00
3. Use ▲ or ▼ to change its value.
4. Press SET to store the new value and move to the following parameter.
To exit: Press SET + ▲ or wait 15s without pressing a key.
NOTE: the set value is stored even when the procedure is exited by waiting the time-out to
expire.
4.2.7 HOW TO LOCK THE KEYBOARD
1. Keep pressed for more than 3 s the ▲ + ▼ keys.
2. The POF message will be displayed and the keyboard will be locked. At this point it will
be possible only to see the set point or the MAX o Min temperature stored
3. If a key is pressed more than 3s the POF message will be displayed.
4.2.8 HOW TO UNLOCK THE KEYBOARD
Keep pressed together for more than 3s the ▲ + ▼ keys, till the Pon message will be
displayed.
4.2.9 THE ON/OFF FUNCTION
With onF = oFF, pushing the ON/OFF key, the instrument is switched off. The
OFF message is displayed. In this configuration, the regulation is disabled.
To switch the instrument on, push again the ON/OFF key.
WARNING: Loads connected to the normally closed contacts of the relays are always
supplied and under voltage, even if the instrument is in standby mode.
4.2.10 PARAMETERS
Regulation
Hy Differential: (0,1 ÷ 25,5°C / 1÷255 °F) Intervention differential for set point.
Compressor
Cut IN is Set Point + differential (Hy). Compressor Cut OUT is when the
temperature reaches the set point.
Ot Thermostat probe calibration: (-12.0÷12.0°C; -120÷120°F) allows to adjust
possible offset of the thermostat probe.
AC Anti-short cycle delay: (0÷50 min) minimum interval between the compressor stop
and the following restart.
CH Type of action: CL = cooling; Ht = heating.
rES Resolution (for °C): (in = 1°C; dE = 0.1 °C) allows decimal point display.
dLy Display delay: (0 ÷20.0m; risul. 10s) when the temperature increases, the
display is updated of 1 °C/1°F after this time.
IdF Interval between defrost cycles: (0÷120h) Determines the time interval between
the beginning of two defrost cycles.
MdF (Maximum) length for defrost: (0÷255min) (0=no defrost) When P2P = n, (not
evaporator probe: timed defrost) it sets the defrost duration, when P2P = y (defrost
end based on temperature) it sets the maximum length for defrost.
ALU MAXIMUM temperature alarm: (SET÷110°C; SET÷230°F) when this temperature
is reached the alarm is enabled, after the “ALd” delay time.
ALL Minimum temperature alarm: (-50.0 ÷ SET°C; -58÷230°F when this temperature is
reached the alarm is enabled, after the “ALd” delay time.