15
USER SEQUENCE OF OPERATION
Machine Starting:
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If OFF, the machine is started by pushing the ON/OFF button.
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The ON LED (green) will lit.
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On the main screen is showed the status “STARTING”.
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After 15 seconds of delay the system will be running.
Machine Shut-Down:
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The machine is halted pushing again the ON/OFF key.
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The ON LED (green) is switched off.
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On the main screen is showed the status “STOPPING”.
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All the compressors are stopped.
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Blower motor will be switched off after pre-set delay timing when all compressors are switched off.
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On the main screen is showed the status “SYSTEM OFF”.
Set Point Change:
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Press “SET”, the LCD will ask the password input.
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Using the “UP” and “DOWN” keys input the correct password.
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Press “SET”, the “MODIFY” word appears to allow the parameter to be changed. The LCD will show the actual
value.
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Using the “UP” and “DOWN” keys modify the set point value.
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Press “SET” to store it or “ESC” to exit without memorizing.
COMPRESSOR CONTROL
Control setting to switch on / off the compressors is through digital output signals from an external controller fed to the
micro-processor board. When the system is started up, the software starts to check all the necessary inputs to start the
unit. It scans the digital/analogue inputs. If any unwarranted interruption occurred the alarm signal is generated and the
compressor will be shut-off.
BLOWER MOTOR CONTROL (OPTIONAL)
Control setting to switch on / off the blower motor is through digital output signal from an external controller fed to the
micro-processor board. The system’s control will prevent the compressors to operate if this signal is not fed to the micro-
processor board.
CLASSIC
AIR CONDITIONERS
TOUT = 10°C TIN = 15°C
COOLING 75%
SET
Menu
Esc
On/Off