Designation: AIR CONDITIONER FOR ELECTRICAL ENCLOSURE
Page 11/16
UMA-CDZ-IP-ACOWM145-00
Button name
Function
Action
Adjust menu and parameters
Press it and the
controller responds.
Adjust menu and parameters
Press it and the
controller responds.
Exit setting parameters
Press it and the
controller responds.
Set-point adjustment
1) Press the
Set
button for 3 sec in status of measuring and controlling to enter user menu, the panel
will display
St
.
2) Press the
Set
button again to display the parameter value of
St
, and modify the temperature set-
point by pressing
or .
WARNING:
temperature which unit starts to work is St+C1. For example: St=31, C1=4 compressor and
condenser fan turn on at 35°C (31°C+4°C)
Parameter adjustment
1) When
St
shows, press
to display
Po
, and press
Set
to display
00
; at this moment, use the
button
or to input the password of administrator menu (
55
).
2) After inputting the password
55
, press
Set
to display
Po
. The controller will automatically verify
whether the password is correct.
3) When it passes verification, press
or to select parameter items
St, Po, C1, C2……
(i.e.
any parameter item of user menu and administrator menu); otherwise, the controller will only stay at
the parameter items St and Po without displaying other parameter items.
4) After selecting the menu, press
Set
to enter the current menu and set its parameters. Use
or
to adjust parameter values, then press
Set
again to return to menu selection status.
5) Under any parameter setting status, press
or press no button for 30 sec to exit parameter setting
and save the current parameter value automatically.
Note: The password of administrator menu is valid for once. After exiting parameter settings by
pressing
, correct password must be entered again before adjusting parameters.
View temperature
1) When
U1
(temperature display)
=
00, the controller displays the current temperature of cabinet
sensor.
2)
When
U1
=01, the controller displays the current temperature of evaporator sensor.
(WARNING: no evaporator probe available on air conditioner)
Control output
Cooling:
In normal status:
Refrigeration starts when the cabinet temperature > temperature set-point
St
+ control differential
C1
, and
the indicated time must elapse between two successive minimum switch-on of the compressor.
Refrigeration stops when the cabinet temperature < temperature set-point
St
.
In case of cabinet sensor fault,
When
A1
=0, compressor start and stop time in the mode of “run/stop in a proportional time” is disabled,
refrigeration stops.
When
A1
=1, compressor start and stop time in the mode of “run/stop in a proportional time” is enabled,
refrigeration performs in cycle according to the set refrigeration start
A2
and stop
A3
time in the mode of
“run/stop in a proportional time”.
