Acson international A5ACV 100 CR, Manual

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Symptoms Possible Cause Troubleshooting
1 Panel gets hot - Wiring fault in 12VDC supply - Change a new panel module and turn ON the unit again
abnormally after the verification
2 The LCD no display - Wiring fault in 12VDC supply - Correct the wiring problem
(blank screen) - No power supply - Check the wiring and supply 12VDC to panel
- Voltage supply too low - Check the power source
- Module defective - Change a new panel module
3 - -' for all status -Panel cannot/ not yet - Ensure the selected unit exits in the network
(quite a long time) received the information - Ensure the wiring is correct
from chiller or FCU completely - Ensure the wiring is not defective
-Ensure the wiring has been isolated from high power cable
- That particular unit address - Select a coherent unit address on the panel (refer to
is not recognized by the panel 6.2.2)
- Module defective - Change a new m odule
4 ON/ OFF, COOL or - Software limitation - Ensure it is pressed (hold 1s) in [Summary Pages]
HEAT button not not in other menu.
function - Module defective - Change a new m odule
5 Cannot switch to - Software limitation - Ensure this mode is available in current "Model" of
HEATING mode Chiller, please refer to 6.2.4
6 Cannot switch to - Software limitation - Ensure this mode is available in current "Model" of
BOILING mode Chiller, please refer to 6.2.4
7 No "Manual Defrost" - Software limitation - Ensure current running m ode is HEATING
item
8 Cannot step inside - Software limitation. Panel has - Refer to sym ptoms 3
[Set Parameter] not received all the inform ation
from chiller com pletely
9 7 Days Programmable - Software limitation. User Control of Chiller:
Timer not function did not activate the schedule - Ensure the "Tim er" in [Timer Menu] is set ENABLE
Control of Chiller:
- Ensure the 'Timer" in [Operation Menu] is set ENABLE
10 No beeping sound - Software limitation. User - Ensure "Buzzer" in [Panel Option] is set ON
when new alarm did not set ON to the alarm
occurred buzzer
11 No screen saver after - Software limitation. User did - Ensure "Screen Saver" in [Panel Option] I set ENABLE
timeout not set ENABLE to the screen
saver
12 Time always reset to - No backup battery - Replace coin cell battery
12:00am, 1st Jan 2000 - Energy of the backup battery is
low
13 Panel stop operation. - Unstable power supply - Power off the panel. Take out the backup battery as well.
Whole operation - Energy of the backup battery is Replace with a new 3V coil cell battery if necessary. Put
freezing (hang) low back the backup battery into the panel and power on again
7. PROBLEM AND TROUBLESHOOTING
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