© 2010 Viking Preferred Service
30
Service Diagnostics and Procedures
Ice Maker Diagnostics
The chart below shows how to perform the optics diagnostic procedure.
Step
Status LED
Possible Cause
Action
1. Open freezer door
Two pulses followed
by a one second delay
(repeats)
The flapper door on.
The emitter is clocking the
beam.
Go to step 3.
The optics are faulty.
Go to step 3.
No Lamp
Ice maker is in the harvest
mode.
Press in the freezer door
switch. When in the harvest
mode the status LED
will blink one flash every
second.
Faulty diagnostics LED.
Replace receiver board.
2. Press in the emitter flapper door
to unlock the beam.
Pulses followed by
a one second delay
(repeats)
The optics is faulty.
Optics is not working
correctly.
LED is on solid
Optics is not working
correctly.
Close freezer door.
Step
Status LED
3.
Disconnect the power supply.
Four pulses repeated once
indicates the relay is
defective.
Replace both the emitter and receiver board.
Three pulses repeated once
indicates optics and
relay are good, but I/M is not being sensed/will not
operate.
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receiver board and neutral
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Two pulses repeated once
indicates optics are
defective.
Repeat step one and replace both boards if
necessary.
Steady Light for five seconds
indicates the relay and
optics are good, and the receiver senses the
ice maker.
No Light
, unplug the refrigerator for five seconds
and repeat test.
4.
Slide the ice maker out, remove cover.
4.
Jump “T” & “H” to bypass the bi-metal and start a
harvest.
5.
Connect the power supply.
6.
Close the freezer door to align the optics and a harvest
cycle will begin in five seconds.
7.
Open the freezer door and observe the ice maker.
If “T” to “H” is properly jumpered and the ice maker will
not run, stop test and check the ice maker.
9. Remove the jumper before the ejector blades reach the
10:00 position. Reinstall the ice maker or be prepared to
catch the water fill.
10. Immediately disconnect power after the water fill.
11. With the freezer door closed, reconnect the power supply.
12. Wait five seconds and open the freezer door and watch
the status LED.