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Sears C110 Service Information page 5

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H I . T E M P L I G H T
The Hi-Temp Light has a potential circuit
through the entire dishwasher cycle. Refer to
figure 8. The potential circuit (broken lines)
exists from the timer, through the Hi-Temp light
and timer motor, to neutral.
However, the timer contact that controls the ti-
mer motor is closed through the entire dishwash-
er cycle (except in increments 4 and 36 which
are *re thermostatic hold increments on the ti-
mer).
Since current takes the path of least resistance,
in this case through the timer motor, there is not
enough current across the Hi-Temp light to illu-
minate iti
When timer contact 22 opens in the thermosta-
tic hold (increments 4 and 36) current will flow
through the indicator light. This condition will
only occur if the water temperature is lower
than 145o F (63'C) and the thermostat is open.
See Figure 9. The indicator light will be ON but
there is not enough current across the timer mo-
tor to make it run.
Figure 9
lf the water temperature is 145o F (63'C) or
higher and the thermostat is closed, a circuit will
be completed through the thermostat and the ti-
mer motor will be energized, advancing the ti-
mer to the next increment, closing timer con-
tact22 Figure 10.
T . F . 2 6 - # 2 7
Figure 10
C H E C K I N G
The lights are neon bulbs with an internal resis-
tor, so they cannot be checked for continuity.
Put 120 volts AC across the leads at the indica-
tor bulb disconnect plug.
lf the bulb does not glow, it is bad and the
whole indicator bulb pack must be replaced.
lf the bulb does glow, look at the wiring diagram
to see which contacts in the pushbutton switch
and timer need to be checked to isolate the pro-
blem.
REPLACEMENT
THE BULB PACK SWIE
IIIDICATOR TIGHT IS REMOVEO
AS SHOW]I
4
Figure I

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