Technical information
12/01/02
2. Turn the control switch to ICE and check for proper
control voltage. If the Red LED is ON, the control volt-
age is good. If the Red LED is OFF, check the control
transformer circuit. See checking control transformer.
3. Next, check the 115 volt input at the 10-pin connector.
Check the brown wire at pin #10 to a white neutral
wire for 115 volts. (Always choose a white neutral
wire to establish a good neutral connection when
checking voltages.) A jumper also feeds 115 volts
into pin # 7. If no voltage is present, check the 115
volt supply circuit.
4. Check the board sequence using the S3 output test.
a) Turn the control switch to OFF and switch S3 ON.
b) Turn the Control switch to ICE and watch the light-
ing sequence of the 4 green LED’s numbered 1, 4, 3,
2 from the board edge. The Red LED should light in
about 3 seconds.
About 3 seconds later, LED 2 should light.
5 seconds later, Led 2 will go out and LED 3 will light.
5 seconds later, Led 3 will go out and LED 4 will light.
5 seconds later, Led 4 will go out and LED 1 will light.
5 seconds later, Led 1 will go out and LED 4 will light.
This sequence completes the output test and the unit
is now in the 1 minute fill cycle.
Note: If the LED’s light in a different sequence or the 5-
second interval does not occur as explained, the control
board is bad and should be replaced. If the test sequence
is correct, turn the control switch OFF and switch S3 OFF.
The S3 switch must remain in the OFF position during nor-
mal operation. The components will cycle during this test.
5. You have checked the board sequence and now
need to check the output to each component through
the K1 10-pin connector for 115 volts. Follow the wir-
ing color code on the wiring diagram or use the generic
drawing in the wiring diagram section to check each
component for 115 volts through out the sequence and
check from each pin to a white wire.
Note: Checking from pin to case ground can give a false
reading in some instances. Always choose a white neu-
tral wire to establish a good neutral connection when
checking voltages.
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12/20/03
2/20/03