6.4 Failure alarm
In accordance with the system setting， the point in
N.C. indicates the failure point; If the return circuit can
be formed between the DCOM(common port) of the
plug and the point， it will run in no problem; on the
contrary， the disconnection means failure. For the
points in no use， short-circuit it to avoid the unwanted alarms. In case of fault， the indicator
light is on and there is alarm from the speaker. Press “UP” to mute it.
2. In the temperature readout interface， press "SET" and
subsequently “DOWN” to get the setting option of the
cooling return differential， the default value is 3，
repress once "SET"， the first letter flickers to denote
the setting is available， then adjust the value (ranging
from 1 to 9) through the key “UP” or “DOWN”; Press
“SET” another time to quit the value adjustment
N.B.：If no any manipulation occurs within 10 seconds， it will quit the current setting
and get back to the temperature display interface.
Fault
Inside enclosure tempe
-rature probe fault
Code
Delay
0 s 2 s
Duration Reset Remarks
Alarm,Compressor
halt
Auto.
High temperature Alert
0 s 2 s
Auto.
N.B.：
compressor is larger than the shortest halt time. In case of communication malfunction,he display
will keep in memory the interface before the fault.
The compressor will restart in 1 min. delay after the reset of compressor and the downtime of
Heat pipe temperature
probe fault
Heat pipe over
-temperature
0 s 2 s
Auto.
0 s 2 s
Auto.
6.5 Power on/off
In event the interior fan starting condition is met after powering on， the system will
automatically delay for 5~15s(random value) to activate the fan; in event the compressor
starting condition is met， the fan will delay for 10 s to activate the compressor
6.6 Self-diagnosis
Press the combined keys for Self-diagnosis during the starting countdown and the relay will
connect/disconnect to power for 30 s， then enter into the normal operation process.
Self-diagnosis sequence：
1、In the starting countdown step,press "SET"+"UP"+"DOWN" keys to get the system
selfchecking and activate the exterior fan.；
2、30 s later after interior fan operation， start compressor；
3、30 s later， stop compressor and start exterior fan；
4、30 s later，stop fan，start the fault relay；
5、30 s later，stop all，quit the self-diagnosis，enter the temperature control and activate
the relative devices.
Internal fan is always on in self-diagnosis
!
Alarm,Compressor
halt
Alarm,Compressor
halt
Alarm
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