Installation Guide
17
TROUBLESHOOTING
Before contacting a service technician, your local product dealer or 
Unique O-Grid Appliances, please check the following points. 
If you contact a technician to repair a fault listed below, or to repair a 
fault caused by misuse, abuse, or faulty installation, a charge will be 
made even if the appliance is under warranty.
PROBLEM SOLUTION
Appliance is 
connected 
to power, 
but does not 
operate
• Check if 12V or 24V DC is present at the 
appliance. If not, check all connections and the 
system battery voltage.
• Check that the polarity is correct: positive (+) 
is connected to positive (+), and negative (-) is 
connected to negative (-).
• Check the fuse. If blown, replace with a new one 
(see page 11 for details).
• The primary problem with a non-functioning 
appliance is due to a voltage drop to the 
compressor, which causes the unit to fail 
to start due to “low voltage”. Typically a 
connection is not as tight as it should be, or the 
wire size to the compressor is too small. The 
low voltage problem occurs instantly at start-up 
and can be dicult to detect with a volt meter 
because it happens so quickly (<100ms)
Appliance is 
operating, but 
the interior 
(cabinet) is not 
cold
• Allow the appliance at least 4 hrs to cool down 
once turned on.
• Check that the thermostat control knob is 
turned to the correct setting relevant to the 
room/ambient temperatures.
• Check that the room/ambient temperature 
is not approaching the internal operating 
temperature and does not exceed to 100˚F 
(38˚C).
• Has too much warm food been added to the 
fridge/freezer recently? If so, it will take some 
time for the appliance to return to temperature.
• Does the cabinet have adequate ventilation 
around the side walls, allowing it to transfer 
heat properly? (See Installation section)
The door will 
not open 
• Has the door just been opened? If so, leave the 
appliance closed for a few minutes to allow the 
air pressure to equalize and try again.










