ULT Energy-saving Series
After-sales Service Manual
22
4) In case of condenser sensor fault, the actual temperature and the condenser sensor fault code "E1" are displayed
alternately on the display screen.
5) In case of ambient temperature sensor fault, the actual temperature and the ambient temperature sensor fault code
"E0" are displayed alternately on the display screen.
6) In case of heat exchanger sensor fault, the actual temperature and the heat exchanger sensor fault code "E3" are
displayed alternately on the display screen. When -86°C is selected, in case of "E3" fault, long press the "Buzzer
cancel" button for 5 seconds, "E3" fault disappears. After "E3" fault is displayed, and when the compressor of the
high temperature stage system is started, the compressor of the low temperature stage system starts with a delay of 1
minute.
7) When the perceived temperature of heat exchanger sensor is greater than or equal to 90°C, the alarm displays E4.
Note: (The models are -25°C and -50°C freezer without heat exchanger sensor, therefore, there are no E3 and E4
faults)
(The model is independent back-up system freezer, therefore, there are no E0, E1, E3 and E4 faults)
Alternate display time: The actual temperature is displayed for 6 seconds, and the fault code is displayed for
2 seconds.
8) Alarm message of DW-86L100J:
Condenser
sensor E1
Ambient
temperature
sensor E0
Heat
exchanger
sensor probe foams
on
the
bottom
inside the freezer
Heat exchanger
sensor terminal
E3
