36 Chapter 5 Precision Air Conditioner Controller
DM Series 16kW Air Conditioner User Manual
2. Press the ENTER button to highlight the input data field in the password interface.
3. Press the UP or DOWN button to change the current number.
4. Press the ENTER button to confirm the password and enter the
Main Menu
interface.
Note
If the input password is incorrect, press the ESC button to quit and input again.
Example 2: changing parameters
Taking
High TEMP
on
Alarm Control
interface as an example, the procedures are as follows:
1. Press the UP or DOWN button to move the cursor on the
Alarm Menu
menu in the
Main Menu
interface.
2. Press the ENTER button to enter the
Alarm Menu
menu.
3. Press the UP or DOWN button to move the cursor on
Alarm Control
item in the
Main Menu
interface.
4. Press the ENTER button to enter the
Alarm Control
interface.
5. Press the UP or DOWN button to move the cursor on
High TEMP
.
6. Press the ENTER button to highlight the parameter field of
High TEMP
.
7. Press the UP or DOWN button to select the parameter.
8. After selecting, press the ENTER button to confirm. The parameter will take effect.
9. Press the ESC button to return to the previous menu interface.
Note
After changing the parameter, if you do not press the ENTER button to validate the changed parameter, the change will be
invalid.
5.3 Indicator
The controller provides two indicators: running indicator and alarm indicator (see Figure 5-1). Their detailed functions
are described in Table 5-2.
Table 5-2 Function descriptions of indicators
Indicator
Color
Status
Function descriptions
Running indicator
Green
On
The controller is working normally
Off
The controller is not working normally
Alarm indicator
Red
On
No alarm is generated
Blinking
An alarm is generated
5.4 Control Interface
The LCD screen displays the communication status after the controller is powered on. If the controller cannot
communicate with its target interface board, the LCD screen will prompt
Communication Failure
. If the
communication is successful, the screen will display an OFF interface or a MAIN interface, which depends on whether
the AC unit is on or off.
5.4.1 OFF Interface
If the AC unit is turned off, after successful communication, the LCD screen will display the OFF interface, as shown in
Figure 5-2. As for which OFF interface will be displayed, it depends on the off mode of the AC unit.
Standby OFF
D01 I01
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Remote Shutdown
D01 I01
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Unit OFF
2008/12/02 09:14:04 TUE
D00 I00
Figure 5-2 OFF Interface
