Upper alarm sensor low
temperature alarm (Temp ≤ MIN of
L01
setting warning temperature, rarely
happen)
Lower alarm sensor high
temperature alarm (Temp ≥ MAX of
setting warning temperature,
H02
usually happen when you just
power on the unit, because at that
time the cabinet temp has not
dropped to your setting temp)
Lower alarm sensor low
temperature alarm (Temp ≤ MIN of
L02
setting warning temperature, rarely
happen)
H03
Ambient temperature high alarm
Upper condenser temperature high
H04
alarm
Lower condenser temperature high
H05
alarm
The door was not close longer than
do
1 min
PF
Powerfail alarm
Low battery alarm
bL
(battery volts <12V)
Er
Recorder not connected
Pr
USB data error
LoF
Recorder not startup
1.Check the settings of warning temperature are correct for you. If
not, change the settings using buttons of display panel.
2.Check the sensor is good and its connection is correct. If sensor
defective, replace sensor.
3.Try a known good main board. If the issue does not persist,
replace main board. (rarely)
1.Check the settings of warning temperature are correct for you. If
not, change the settings using buttons of display panel.
2.Check the sensor is good and its connection is correct. If sensor
defective, replace sensor.
3.Try a known good main board. If the issue does not persist,
replace main board. (rarely)
4.Refrigerating system failure, please see refrigerating system
failure part.
1.Check the settings of warning temperature are correct for you. If
not, change the settings using buttons of display panel.
2.Check the sensor is good and its connection is correct. If sensor
defective, replace sensor.
3.Try a known good main board. If the issue does not persist,
replace main board. (rarely)
Keep the unit at least 30CM far away from other objects, and open
your air‐conditioner to cool it.
1.Keep the unit at least 30CM far away from other objects, and
open your air‐conditioner to cool it.
2.Check condenser‐fan good or not. If not, replace it.
1.Keep the unit at least 30CM far away from other objects, and
open your air‐conditioner to cool it.
2.Check condenser‐fan good or not. If not, replace it.
Close the door.
1.Check the power line connect well with the 220VAC power
source and freezer.
2. Make sure the 220VAC power is OK using multi‐meter.
Reconnect the power line to a known good power source.
3. Check if the fuse and power supply board are OK, replace the
damaged part of the two part.
Replace battery
1.Check the connection of recorder
2.Replace the recorder
1.Reconnect disk and check the connection of recorder
2.Replace the recorder
1.Under the unlock status long press enter and up buttons till LoF
disappear .If it does not work, check the connection of recorder
2.Replace the recorder