CONTROL OPERATION GUIDE
The unit is equipped with a microprocessor controller board. The microprocessor contorller is provided to
give temperature control for the system by accurately measuring and controlling the water entering and
water leaving temperature. The temperature setting in the unit is preset in the factory. It is not recommended
to change the setting unless necessary. A wired contoller handset is connected to the microprocessor board.
Every parameter setting and reading can be observed from the LCD of the handset.
1. Handset location
The handset is located on a metal bracket behind the right door panel.
2. LED Display (microprocessor board)
The keypad LED will light up when the unit is turned on.
3. LCD display (contoller handset)
During normal operations, the LCD can display the entering water temperature, the leaving water
temperature, the entering water set point temperature, compressor on or off status and outdoor air
temperature. When malfunctioning occurred, the LCD would blink. The display would show the faulty
parameter and the date and time of the occurance.
4. Controller functioning specification
There is a 3 minute delay for the compressor and fan motor to restart (default setting). During defrosting,
fan motor is not running.
48
Summary of Contents for A5ACV 100 CR
Page 43: ...INSTALLATION A5ACV 30 55 75CR 41 ...
Page 44: ...A5ACV 30CR A5ACV 55CR 75CR 42 ...
Page 78: ...10 WIRING DIAGRAMS PA R T NO 50 13 9 026086 MODEL A5ACV 30CR 76 ...
Page 79: ...77 MODEL A5ACV 55CR ...
Page 80: ...MODEL A5ACV 75CR PA R T NO 50 13 4 083602 78 ...
Page 81: ...MODEL A5ACV 100 135CR 79 ...
