Dometic NDA1402 - Ice Maker Replacement; Water Fill Adjustment; Fill Tube

4140
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This is an energized circuit. Shock can occur
if not tested properly. Testing is to be done
by a qualied service technician.
12.9 Ice Maker Replacement
It may be necessary to replace the entire ice maker as-
sembly. Disconnect the power to the appliance. Discon-
nect the 4 pin connector from the ice maker unit. Check
each wire for continuity to make sure the wiring is good
before replacing the ice maker unit. If there is no continu-
ity on any of these wires, replace or repair them as neces-
sary and recheck the ice maker unit to determine whether
the problem was in the wiring or the unit itself. Remove
the three screws holding the unit to the plate. Before re-
placing the ice maker assembly check the temperature of
the freezer, for the unit to cycle it should be 15º F ± 5º F or
cooler as the mold thermostat starts the cycle.
12.10 Water Fill Adjustment
The correct water level in the mold is important for the
proper production of ice. The size of the ice cubes de-
pends on the amount of water which enters the mold. The
cubes should be approximately 1/2” wide, 3/4” high and
2-1/2” long. If the water overows in the mold, rst check
to see if the ice maker unit is level in the appliance. Next
ensure that the appliance is installed level in the RV. If
there is still water overow, adjustment of the water ll
screw is necessary. Locate the screw on the ice maker
assembly. Turn the screw as necessary toward the “+”
or “—” side. One full turn of the screw will make a 20 cc
change in the amount of water. DO NOT turn the screw
more than one full turn at a time. If the water level is too
high, it can also cause the ejector blades to become fro-
zen in the ice. Follow the procedures above to correct the
problem.
(SINGLE)
WATER VALVE
(DUAL)
W1- Blue
To the door
W2- Red
To the Ice-Maker
NOTE: Units that have water at the door dispenser will
use a dual coil water valve. Both coils are 120 volt AC and
can be tested by measuring the resistance.
W1 - Blue 400 Ohms +/- 10%
W2 - Red 200 Ohms +/- 10%
Note: The amount of water varies, depending on water
pressure.
12.11 Fill Tube
To avoid the risk of water leakage outside the inlet, make
sure the ice maker ll tube (located behind the ice maker)
is inserted far enough in the ice maker water inlet cup.
Use your ngers to verify that the ll tube is
protruding approx. 1/2” into ll cup.
Adjusting screw for regulating
the water supply
Clockwise to reduce
Counter-clockwise to increase
Should the ll tube be too short, extending the overall
length may be necessary. This can be accomplished by
inserting a piece of PVC tubing (1” long x 5/8” OD) into the
end of the ll tube.
PVC tubing