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Another source for air leaks could be the drain hose. At
the end of the drain hose is a check valve. During instal-
lation of the refrigerator the hose might be shortened and
the check valve must be moved to the end of drain hose.
Any time lack of performance or excessive frost is experi-
enced, look for the check valve at the end of hose.
9.3 Drain Tube
The drain tube is used during the defrost cycle to allow
water from the defrosting of the freezer section to migrate
to the fresh food side and be drained through the rear of
the refrigerator and out through the oor or the lower side-
wall vent. The drainage tube must be free from anything
blocking the passage. The required orice dimension is
1/4”. Check the drainage tube for blockage, ice, dirt etc.
and clean if necessary. If the orice dimension is smaller
than 1/4”, use a sharp tool to increase the orice size.
Check orice diameter. Should be ¼”
9.4 Wall Entrances
To prevent air leaks from the outside, it is vital to make
sure that wall entrances have been sealed properly and
that the drain plug is inserted at the bottom rear of the
freezer compartment.
Locate the drain plug at the bottom rear of the freezer
compartment. Make sure the drain plug is in place. If the
plug is missing, install with a new one.
Wire harness
Ice maker ll tube
and wire harness
Verify that the wall entrances for the wire harnesses and
for the ice maker ll tube have been sealed properly. If
necessary, apply a butyl tape type sealant around the
openings from the inside as well as from the outside.
In most applications, removing the upper side wall vent
will access the entrance points. For applications using a
roof vent, removal of the refrigerator may be necessary.
In some cases refrigerators with serial numbers below
707XXXXX may require an auxiliary defrost fan kit to be
installed to reduce the formation of frost in the freezer sec-
tion. Contact Dometic Technical Service at 800-216-5115
to order an auxiliary defrost fan kit (Part# 385130901).
The Refrigerator must be completely defrosted before re-
pairs are completed to ensure proper operation.
9.5 Auxiliary Defrost Fan
9.6 High Humidity
If the interior of the coach is not air conditioned, higher
temperatures and humidity can occur. A small amount of
condensation may form on the frame of the refrigerator
or around the ice dispenser area. In some cases it can
develop to such a degree that it will run off the frame or
down the freezer door. As the humidity is reduced, the
sweating will decrease. High humidity can also be a factor
in rapid formation of frost.
9.7 Door Position
If either door is closing too high or low against the frame,
cold air leakage can occur. Adding or deleting a at thin
washer at the top or lower hinge pin can raise or lower the
door position. To correct the door alignment, loosen the
hinge screws slightly and reorient the door in the proper
position. Hold the door in its new position and carefully
retighten the hinge screws.
Drain plug at bottom rear of freezer compartment
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