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If the cooler is operated when the vehicle ignition is switched off, the cooler switches off
automatically as soon as the supply voltage falls below a set level. The cooler will switch
back on once the battery has been recharged to the restart voltage level.
NOTICE! Danger of damage!
When switched off by the battery monitor, the battery will no longer be fully charged.
Avoid starting repeatedly or operating without longer charging phases. Ensure that
the battery is recharged.
In «H3» level, the battery monitor responds faster than at the level «H1» and «H2».
Monitor Level H1 H2 H3
12V Switch-off voltage, V 10.3 10.8 11.3
Restart voltage, V 11.1 11.8 12.6
24V Switch-off voltage, V 21.5 22.3 24.3
Restart voltage, V 22.7 23.7 25.7
When the cooler is supplied by the started battery, select the battery monitor level «H3»,
if the cooling device is connected to a supply battery, the battery monitor level «H1» will
suffice.
•Switch on the cooling device.
•There are 3-level low voltage protection battery monitor setting: H1, H2 and H3.
•Press and hold the «UP» and «DOWN» buttons for 3 seconds to select the battery
monitoring level H1, H2 or H3.
4.5 The explanation for the running code shown in the
display screen
Error
Code Possible Reason Suggested Solution
E0 Sensor circuit is broken or
short Connect or replace the sensor
E1 Input voltage is low Check the battery voltage or adjust the
level of the battery protection system
(point 4.4 of the instructions).
E2 Ventilating fan problem Check if the ventilating fan is blocked or
short circuit.
E3 Compressor started self-
protection
Disconnect the device from power supply
for 30 minutes, and re-start the device.
E4 Compressor protect itself
against unusual running speed.
Change the working mode by device
control panel
E5 Control panel’s overheating
warning
Move the device to a place with well-
ventilated installation environment.