12
EN
Power/Installation Issues Refrigerators
6 Power/Installation Issues
Many of the refrigerator problems are caused by
issues outside the product itself. When diagnosing a
refrigerator problem, always check the issues described
in this section before replacing components.
6.1 Power Issues
If the refrigerator is experiencing a source issue from the
power supply of the truck, the fix is not related to the
appliance and could be the result of a battery issue.
Use a digital or analog volt meter to take voltage
readings. Refer to the following table to diagnose
possible power issues.
Problem Possible Cause Remedy
U
Term
= 0 V
There is an interruption in
the battery or electronics
connection.
Establish a
connection.
The main switch is faulty (if
installed).
Replace the
main switch.
The additional supply
line fuse has blown (if
installed).
Replace the
supply line
fuse.
U
Term
≤ U
ON
The battery voltage is too
low.
Charge the
battery.
Start attempt
with U
Term
≤ U
OFF
There are loose cables or a
poor contact (corrosion).
Establish a
connection.
The battery voltage is too
low.
Replace the
battery.
The cable cross-section is
too small.
Replace the
cable.
Start attempt
with U
Term
≤ U
ON
The ambient temperature
is too high.
Move the
unit to a new
location.
There is insufficient
ventilation.
U
Term
Voltage between positive and negative terminals
U
ON
Cut-in voltage
U
OFF
Cut-off voltage
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This appliance must be installed with a load dump
board. Refer to the manufacturer's specifications for
troubleshooting and/or replacement.
6.2 Installation Issues
Specific clearances are required during the installation
of the refrigerator. Check the installation manual for the
appliance to find the proper dimensions, and ensure that
the installation location complies.
NOTICE: Improper clearances and/or ventilation can
lead to high ambient temperature, causing cooling
issues and possible damage to equipment electronics.
7 Service Procedures
WARNING: ELECTRICAL SHOCK, FIRE, AND/
OR EXPLOSION HAZARD. Failure to obey the
following warnings could result in death or
serious injury:
• Use only Dometic replacement parts and
components that are specifically approved for use
with the appliance.
• Service must be done by a qualified service person
only.
• Always disconnect the unit from power before
servicing.
• Always ensure sufficient ventilation so that the heat
generated during operation can dissipate.
• Do not fill the inner container with fluid or immerse
the appliance in water.
• Protect the appliance and power cable against heat
and moisture.
I
Images in this section are general depictions of
the refrigerators and are informational only. Actual
model setup may vary. To see general component
locations, refer to Component Locations on
page 5.
This section has information to help you service the unit
components and replace the unit, if needed. Remember
to check the basics before replacing any parts, such as
loose wiring and overall Installation issues. Refer to the
Maintenance (on page 23) and Power/Installation
Issues (on page 12) sections for more detail.
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