After selecting the parameter item, press Set key to enter current menu item parameter value setting,
press
▲or▼ to adjust parameter value, and press Set key again to return to menu interface.
Under the status of parameter setting, press
key or no key operation within 30s, it will exit from
parameter setting and automatically save the current parameter value.
Note: Administrator password input only valid once, after pressing
key to exit from parameter setting,
you need to input the password again for next adjustment.
5.2.2 Temperature viewing
When parameter U1=00, it displays current cabinet temperature.
When parameter U1=01, it displays current evaporator temperature.
In the status of temperature measuring and controlling, press
to view the current evaporator sensor
measured temperature value (evaporator sensor is enabled and keeps normal).
5.2.3 Manually forced operation
In the status of temperature measuring and controlling, Press
for three seconds to force the open or
close of defrost.
When U3=01, that is, K2 relay works as lighting output, press
▲ key to open/close lighting.
5.2.4 Parameter recovery
In the status of temperature measuring and controlling
，
press the key
▼ for 10S
，
it displays the code HO
and enter to the operation of one-key recovery. It could continue to select the parameter recovery
items by pressing key
▼and the selection range is H0
～
H7
，
press key
to execute the parameter
recovery and then exit
，
if there is no parameter recovery operation within 30S,it will automatically exit
from the mode without recovery of parameters.
Note: It requires a reliable power supply during this operation, or else, you need to operate it again after
power on the controller and get a reliable power supply.
H0
Give up parameter recovery
，
no change of each parameter, no
display of parameter recovery success code
dr
H1
Recovery parameter value H1, recovery success display
dr
H2
Recovery parameter value H2, recovery success display
dr
H3
Recovery parameter value H3, recovery success display
dr
H4
Recovery parameter value H4, recovery success display
dr
H5
Recovery parameter value H5, recovery success display
dr
H6
Recovery parameter value H6 recovery success display
dr
H7
Recovery parameter value H7 recovery success display
dr,
it is
used specially for production testing, user should not use it.
7. Control output
7.1 Compressor
：
Normal status
：
when the cabinet temperature is higher than temperature setting (St) + Temperature hysteresis(C1),
and finish the compressor start Min interval, the compress will start
；
When the cabinet temperature is lower than temperature setting (St), the compressor will close.
Cabinet sensor failure:
When parameter item A1=0, the function of “Run/stop in a proportional time” is closed, the compressor
closes
；
When parameter item A1=1, the function of “Run/stop in a proportional time” opens, the compressor
will run and stop periodically according to the set time proportion (Start duration A2 and Stop duration