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Chapter 7 : Fault Code & Descriptions
7.1
Troubleshooting
WARNING:
The following troubleshooting program may only be run by qualified service staff.
Unauthorized operation can lead to major hazards or equipment damage.
Phenomenon
Unable to start up
No air flow
Not enough
cooling
Possible cause
The circuit breaker of the
external electric panel is not
powered on.
The fuse installed in the
CoolDoor's fuse holder is
failed.
The power cable of the touch
panel is experiencing
abnormality.
The touch panel has failed.
The fan switch in the electric
panel is not turned on.
Fan fuse blown.
The fan communication &
power terminal is not
connected
The fan fuse is blown.
The fan is failed
The chiller is not supplying
chilled water as usual.
The ball valve and cut-off
valve have failed.
Blocked or dirty coil fins.
PID parameters are set up
inappropriately.
Damaged coil fins.
Troubleshooting Instructions
Power the circuit breaker.
Check if the power
communication cable of the TP is
normal.
Check if the single screen can be
operated normally through the
touch panel.
Check that the fan switch in the
electric panel is turned on.
Check that the power supply and
communication terminals are
properly connected.
Check the fan fuse.
Replace the fan.
Check the chiller.
Check if the line is properly
connected.
Check whether the coil fins are
too dirty or blocked by foreign
objects.
Check whether it is the default
value.
Please contact the service staff.
65
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