Hitachi airCore 700 - Maintenance and Service

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INSTALLATION & MAINTENANCE MANUAL
12. Maintenance and Service
The following table identies possible troubleshooting solutions for abnormal conditions.
NOTE:
•
If Zone Interface Box has been replaced, please complete the conguration according to "7. Field
Setting" aer replacement.
Item Phenomenon Check Action
1
The zone control
menu is not display
on the Wired
Remote Controller
home screen.
Is the power supply turned ON? Turn ON the power supply.
Is power wire correctly connected to
Zone Interface Box?
Ensure the power wire is correctly
connected to Zone Interface Box. Ensure
the power wire is turned o to perform
wiring work.
Is power voltage within the applicable
range?
Check the voltage on the power supply.
Check and rectify if the voltage is out of
“normal range” (AC 230V±10%).
Is communication wire correctly
connected to Zone Interface Box?
Correctly connect communication wire
to Zone Interface Box.
Melted fuse or activation of breaker at
power supply.
Short circuit supplied between wires.
Short circuit of wires to earth.
Rectify cause of short circuit and replace
fuse.
Melted fuse for control circuit?
Short circuit supplied between wires.
Short circuit of wires to earth.
Rectify cause of short circuit and replace
fuse or Zone Interface Box.
Disconnected wire to each PCB. Correctly connect wires.
Failure of each PCB. Replace PCB if faulty.
2
System starting
does not initiate.
Is the power supply for Zone Interface
Box normal?
Check the Zone Interface Box power
supply and power cable, connect the
power cable and power on.
Is communication wire correctly
connected with Zone Interface Box and
Wired Remote Controller?
Reconnect communication wire.
Reboot the system, if still can’t solve the
problem by 3 times.
Replace the Wired Remote Controller or
Zone Interface Box.
3
Alarm code F6
alert (Zoning Kit)
Is remote sensor1 connected well? Reconnect remote sensor1.
Is resistance of THM2 between 0.24kΩ
and 840kΩ?
Remote sensor 1 has a failure, please
replace the remote sensor.
Failure of PCB. Replace Zone Interface Box.
Alarm code F7
alert (Zoning Kit)
Is remote sensor2 connected well? Reconnect remote sensor2.
Is resistance of THM3 between 0.24kΩ
and 840kΩ?
Remote sensor 2 has a failure, please
replace the remote sensor.
Failure of PCB. Replace Zone Interface Box.