Servicing Thermostat; Servicing Wire Harness; Dual Water Valve; Wiring Harness - Amana ATX 518 VW Service Manual

Ice Maker

Servicing Thermostat

The thermostat can be removed and replaced having
been diagnosed as inoperative. Remove control box
from mold by taking out two phillips screws.
Pull (front of Black Housing) free of the mold, and see
the thermostat on mold side.
Using needle nose pliers, grasp one of the thermostat
clips and pull out. Press in new thermostat, making
sure pins are properly indexed. Using this procedure,
it is not necessary to remove the electrical assembly.
If replacing the module, transfer the clips to the new
mold support. (Use new thermal bonding material.)

Servicing Wire Harness

To remove wiring harness, depress retaining tab and
pull plug free.
RS5280001 Rev. 0
!
To avoid property damage, always test for water
leaks after repair or replacement of the water valve.
Do not over tighten connection to household water
supply.

Dual Water Valve

The dual water valve has two solenoids. When the tan
encapsulated solenoid is energized the amount of wa-
ter allowed to enter ice maker mold is directly propor-
tional to the length of time the water valve switch is
held closed by the timing cam.
Inside the valve is a flow washer which acts as a water
pressure regulator. Proper ice maker fill is 140 cc ±10
cc at 7.5 seconds of water fill at an inlet pressure
ranging from 1.4 to 8.2 bar (20 to 120 PSI).
When the light blue encapsulated solenoid is ener-
gized water flows through the coiled water tank to the
cavity spickett.
The water flow rate is to be 1.7 to 3.5 liter per minute
with 1.4 to 8.2 bar (20 to 120 PSI)pressure drop
across valve.
The valve also incorporates a 80 mesh screen water
strainer.

Wiring Harness

A one-time thermal fuse micro device 78°C (170° F) is
incorporated into the ice maker wiring harness to pro-
tect the plastic liner from melting if the ice maker
should overheat. The thermal fuse is spliced into the
red wire of the ice maker harness. The thermal fuse
is a 78° C (170°F) nonresettable fuse. A "No Ice"
complaint could be caused by excessive heat. Re-
placing only the wiring harness will only temporarily
solve the problem. The ice maker thermostats should
also be replaced.
50
CAUTION