Whirlpool CAE2745 - THERMISTOR RESISTANCE TABLE; TEST #6: Water Level; TEST #7: Drain Pump

PAGE 17
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
 If the resistance is within the range shown in the table,
go to step 6.
 If the resistance is infinite or close to zero, replace the
temperature thermistor assembly.
NOTE: Most thermistor errors are a result of the resistor being
out of range. If the temperature thermistor malfunctions, the
washer will default to pre-programmed wash settings.
6. If the thermistor is good, replace main control and calibrate
washer. Perform Quick Overview Test to verify repair.
TEST #6: Water Level
This test checks the water level sensing components. This
washer uses an on-board pressure transducer. NOTE: Usually,
if the pressure transducer malfunctions, the washer will generate
a long fill or long drain error.
1. Check the functionality of the pressure transducer
by running a small load cycle. The valves should turn off
automatically after sensing the correct water level in the tub.
The following steps assume that this step was unsuccessful.
2. Drain the tub until all water has been removed.
3. Unplug washer or disconnect power.
4. Remove console to access controls.
5. Check hose connection between the pressure transducer
and the pressure dome attached to the tub.
6. Check to ensure hose is routed correctly in the lower cabinet
and not pinched or crimped by the back panel.
7. Verify there is no water, suds, or debris in the hose or dome.
Disconnect hose from main control and blow into hose to
clear water, suds, or debris.
8. Check hose for leaks. Replace if needed.
9. If the preceding steps did not correct the problem,
replace the main control and calibrate washer. Perform
Quick Overview Test to verify repair.
TEST #7: Drain Pump
Perform the following checks if washer does not drain.
NOTE: Refer to Figure 6, “Drain Pump Strip Circuit” for tests
and measurements.
IMPORTANT: Drain water from tub before accessing bottom
of washer.
1. Check for obstructions in the usual areas. Clean and then
perform step 2.
Figure 6 - Drain Pump Strip Circuit
Main Control Shifter Assy
L1
Main Control
N
J16-3J7-1 J16-2Pin 1Pin 1 Pin 2 Pin 2 J7-3
K7
120VAC
Motor
Motor Resistance 14 to 25 ohms
Drain Pump Motor Relay
Drain Pump Motor
Approx. Resistance
F°
32
41
50
59
68
77
86
95
104
113
122
131
140
149
Approx. Temperature
THERMISTOR RESISTANCE
C° (KΩ)
1630
5 127
10
15
20
25
30
35
40
45
50
55
60
65
100
79
62
50
40
33
27
22
18
15
12
10