Instruction Manual
9 
TROUBLESHOOTING 
Before calling for assistance or service, please check this Troubleshooting section. It may save you 
the cost of a service call. If you still need help, follow the instructions below. 
If you need replacement parts, we recommend you use only factory-specified parts. Factory-
specified parts will fit and work properly because they are made with the same precision used to 
build every new Accucold® appliance. Order parts online at 
www.accucold.com/support/parts_accessories.  
Problem 
Cause 
Solution 
The unit is not 
cooling. 
Loose contact between the 
plug and the unit socket. 
Connect the plug firmly into the unit socket and 
data port. 
The power voltage is out of 
range. 
Check if the unit is plugged into power 
supply of 12V or 24V. 
The temperature sensor is 
malfunctioning. 
Contact a local repair center to replace the 
temperature sensor. 
The cooling 
efficiency is bad.  
The fan motor does not 
work. 
Contact a local repair center to replace the fan 
motor. 
The unit is exposed to 
direct sunlight. 
Place the unit in a shady, cool place with good 
airflow. 
The ventilator or propeller 
is blocked. 
Clean the ventilator and the propeller, and 
make sure the unit has good ventilation. 
There is a strange 
noise or vibration 
during operation. 
The unit is malfunctioning. 
To prevent breakdown, turn the unit off 
immediately and unplug it from the data 
port. Contact a local repair center. 
There is a burning 
smell or the case 
is deformed. 
The unit is malfunctioning. 
To prevent breakdown, turn the unit off 
immediately and unplug it from the data 
port. Contact a local repair center. 
LED displays “E1” 
and the unit is not 
running. 
Not enough power is being 
supplied to the unit. 
Check unit whether it’s plugged into the power 
supply of 12V or 24V, ensure that battery 
charge is not too low. 
LED displays “E2” 
and the unit is not 
running. 
The voltage being supplied 
to the unit is too high. 
Check unit whether it’s plugged into the power 
supply of 12V or 24V, ensure that input voltage 
is not too high. 
LED displays “E3” 
and the unit is not 
running. 
The temperature senor is 
disconnected or faulty. 
Check temperature sensor’s plug, or replace 
the sensor. 
If your appliance shows other symptoms than those described above, or if you have checked all 
items listed as the cause and the problem still exists, then call Accucold® Customer Service at 
1-888-4-MEDLAB. 










