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Built-In (BI) Series
Built-In (BI) Series
Monitor Water Valve Flow Meter, Regulate Water Fill Volume and Display when New Water Filter is Needed
The microprocessor observes the volumetric flow through the water valves via a low DC voltage signal from the flow
meter, with every one revolution of the turbine inside the flow meter equaling 0.02 oz (0.5 ml) (See Figure 2-47).
• For an icemaker fill, the electronic control instructs the isolation valve and icemaker water valve to remain open
long enough to deliver approximately 3.5 oz (105 ml) of water. This timeframe will vary depending on the inlet
water pressure and how long the filter has been in use.
• For those units with a water
dispenser, the electronic con-
trol supplies power to the iso-
lation valve and water valve
whenever the WATER key is
pressed.
In both cases, the electronic
control keeps track of the
amount of water delivered to
the filter via the flow meter.
When it has calculated that
two-hundred and thirty-five
(235) gallons of water have
passed through the filter, or if
eight-thousand seven-hundred
and sixty (8760) hours have
elapsed since the last time the
filter reset button was pressed,
then the water filter icon in the
LCD will illuminate (See Figure
2-47A), indicating it is time to
change the filter.
Figure 2-47A.
Water Filter Icon
Appears = Time to
Replace Water Filter
After the filter is replaced, the
reset button behind the grille
must be pressed for five (5)
seconds to clear the filter icon
from the LCD & reset the coun-
ters to zero (See Figure 2-47).
NOTE: If a filter is not installed
the counters must be disabled
by pressing the reset button
five (5) times in seven (7) sec-
onds.
(SWS #4380000)
(SWS #4380000)
HIGH VOLTAGE
After 1 year (235 gallons) press
1 NEUTRAL
4 L1
6 L1
1 MAIN LIGHTS
3 COMP 1
5 COMP 2
8 DEFROST HTR
9
1
6
1
LOW VOLTAGE
1 NEUTRAL
4 L1
6 L1
1 MAIN LIGHTS
3 COMP 1
5 COMP 2
8 DEFROST HTR
17
EXTERNAL
DEVICE
KEYPAD
Figure 2-47. Signal Trace Schematic: Flow Meter Monitored; Filter Reset
2-31
reset button for 5 seconds
1
1
6
1
16
Water flow meter observed
by microprocessor for 235
gallons
7040317 - Revision A - September, 2015
Electronic Control
660 Ω
160 Ω
2300-2900 Ω
27.9-30.9 Ω
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