Dometic CFX3 35 Quick Start Manual

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This notice is sent to you in accordance with the requirements of the National
Highway Traffic and Motor Vehicle Safety Act.
RE: Dometic CFX3 Series Powered Cooler Recall – 20E040
Dear Valued Customer:
Dometic Corporation has determined that a defect which is related to motor vehicle safety
exists with respect to the CFX3 Powered Coolers ("CFX3") that were manufactured between
November of 2019 and June 18, 2020.

THE PROBLEM:

If (1) you have a vehicle with both AC and DC circuits and (2) a CFX3 unit is connected to
both onboard 120VAC and 12VDC circuits/sockets at the same time and (3) the 12VDC
supply is switched off with additional 12VDC device in line with the CFX3 in the "ON"
position, under these circumstances a protection device in the CFX3 unit can fail and allow
the AC/DC power supply to back feed 28V through the CFX3 to some or all the other DC
appliances (such as AC, water pump, lights, furnace, etc.) that are connected to the 12VDC
system. DC appliances on the same DC circuit may therefore fail from a voltage overload.
Although no fire has been reported or observed and is extremely unlikely, the voltage
overload may cause electrical damage and local charring damage to such appliances and
immediate surrounding materials.
Potential use cases, although rare, which can lead to this failure can happen when the CFX3
is connected to BOTH AC AND DC power and:
1. While connected to AC power, something causes the master fuse on the DC circuit of
the vehicle to trip, removing DC power from the DC circuit; or
2. While connected to AC power, the user chooses to turn off the vehicle's 12VDC
power system; or
3. While the vehicle's 12VDC power system is turned off, the user turns on the vehicle's
generator or inverter.
AFFECTED UNITS:
MODEL NUMBERS:
The potentially affected CFX3 Powered Coolers have the following model numbers:
CFX3 35
CFX3 45
CFX3 55IM
CFX3 75DZ
1 of 4
CFX3 95DZ
CFX3 100