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Dometic refrigerators for ALTO R1713, R1723 and F1743 are completely automatic. They
automatically select the energy source, either LPG or electricity, the latter having priority. The
temperature inside the fridge is also set automatically. Therefore, there is no adjustable
thermostat on this fridge.
To turn on the fridge, press the button on the left, inside the front panel of the fridge. The second
button, found on the right, should be pressed and the “AUTO” light should be on. If this button is
not pressed and the “AUTO” light is not on, the fridge is no longer in automatic mode and will
work off LPG continuously.
If the “CHECK” light comes on or flashes, it is because the propane ignition of the fridge did not
succeed. Probable causes could be an empty propane tank, or a closed propane valve on the tank.
To turn off the fridge, the “ON/OFF” button must be pressed out. All indicator lights should be
off.
In very humid conditions, fridge will need to be defrosted every 15 days. Although there is
a pan to collect the resulting water, check that there is no overflow leaking at the front.
After defrosting or shutdown, leave the refrigerator door open to dry out.
NOTE: An absorption fridge may take up to eight hours to start its cooling cycle. Think of starting
it the day before.
NOTE: An absorption fridge is level sensitive. Try to put the trailer as level as possible.
NOTE: The yearly fridge maintenance requires to remove the two outside vent grills to clean and
dust the space around the heating element and the tubing. Remove all carbon deposits in
the burner regularly depending on use of the fridge in propane mode, at least every 2
years (read the Dometic fridge manual).
PHOTO K-24
Refrigerator switches
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