17
It returns to the generator temperature display when no key is
pressed for 1 minute.
3.5.2 - Changing the display
Refer to Figure 15.
If you press the key, the information on data display changes
in the correct order, and pressing the key, it changes in
reverse order.
If you press the key again when the last information is
shown, the display returns to the normal display information.
3.5.3 - Typical display order
Real-time data is shown in the data display (7-segment
LED and 6 figures). The display shows a data code (content
distinction by code number) and various operating times, on/off
time, component temperatures, chilled/hot-water temperature
setpoints and alarm codes. A data code is sent in turn from
the keys and displayed. An alarm code is only shown
when one or several abnormalities occur. The alarm code is
shown in order of importance, and a dotted "." is shown under
the number to the right of the alarm code. When several faults
occur, use the keys to display the additional alarm codes.
If no key including the "BACK" key is pressed for 1 minute,
the display returns to the generator temperature display.
Fig. 16 - Typical display order
Data code Data name Display Means
- Generator temperature 135.0°C
1. Chiller operating hours 1234 hours
2. Absorbent pump operating hours 1111 hours
3. #2 absorbent pump operating hours Not used
4. Combustion hours Not used
5. Refrigerant pump operating hours 1201 hours
6. Purge pump operating hours 107 hours
7. Chiller on/off times 123 times
8. Absorbent pump on/off times 169 times
9. #2 absorbent pump on/off times Not used
A. Combustion on/off times Not used
B. Refrigerant pump on/off times 138 times
C. Purge pump on/off times 51 times
10. Chilled-water temperature setpoint 7.0°C
11. Hot-water temperature setpoint 55.0°C
12. Chilled-water entering temperature 11.9°C
13. Chilled-water leaving temperature 6.8°C
14. Cooling water entering temperature 31.8°C
15. Condenser temperature 34.7°C
16. Steam drain/exhaust gas temperature 211.7°C
17. Purge tank pressure 8.5 kPa
- Generator temperature 135.0°C
STOP RUN
CHILLER
REF PUMP
PURGE PUMP
ABS PUMP
STAND BY
DILUTION
SAFETY CIRCUIT
CHILLER ALARM
POWER
STOP RUN
OPERATION
BUZZER STOP LOCAL
REMOTE
SET BACK
Fig. 15 - Control board
Legend
1 Data display
2 Select key: changes the data display information
3 Back select key
2
3
1
NOTE: In local operation mode the signal from the remote
control panel does not work. In remote operation mode the
"RUN" key of the chiller control board does not work.
3.4.3 - Stop operation
Refer to Figure 14.
Local operation mode
• Keep pressing the "STOP" key on the chiller control board
for more than a second.
• Make sure that the "RUN" indication light goes off and the
"STOP" indication light comes on.
Remote operation mode
• Turn on the stop switch on the field supply remote control
panel.
• Another way to stop the chiller is to press the "STOP" key
on the chiller control board during remote operation.
NOTE: If the chilled-water pump, cooling water pump, and
chiller are interlocked, each pump stops automatically when
the chiller stops. If not, the stop sequence must be:
Chiller, cooling water pump, chilled-water pump
The air handling unit must be stopped after the chilled-water
pump is stopped
3.5 - Changing the information on the data display
3.5.1 - Normal display information
Data display on the control board usually shows high
temperature generator temperature as follows.
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