47
INSTALLATION & MAINTENANCE MANUAL
Item
Phenomenon Check Action
4
Zone control menu
can display on
the Wired Remote
Controller home
screen normally,
but damper does
not work or not
work properly.
Whether the Zone Interface Box is
powered or the communication
between Zone Interface Box and Wired
Remote Controller is abnormal?
Reset power to the system for 30
seconds or longer. Aer 3 minutes,
check whether the Wired Remote
Controller can display the zone control
window. If not, please refer to item1 for
troubleshooting.
Any loose of the connection port
between main board and relay board?
Check the interface and reconnect.
Is there proper connection between
the zone damper motor and the Zone
Interface Box?
Check wiring connection and reconnect.
Is damper motor faulty? Please replace damper motor.
Is the action time (switching time from
fully open to fully closed) of all dampers
motors consistent?
Please replace damper motor.
The connected damper motor
specication does not meet the
requirements of the installation manual.
Please select the correct damper motor.
Is the damper interface on the relay
board shorted?
Relay board failure, please replace Zone
Interface Box.
Is the relay input voltage normal?
Main board failure, please replace Zone
Interface Box.
Is the output voltage of the detection
relay normal under normal transformer
output?
Relay board failure, please replace Zone
Interface Box.
Check if the input and output ports of
the transformer are loose or damaged?
Reconnect the transformer input and
output ports or replace Zone Interface
Box.
Is the transformer output port detected
24V?
If the input voltage is normal, no output
voltage indicates that the transformer is
damaged, replace Zone Interface Box.
5
Thermostat screen
is blank and cannot
be operated.
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.
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