Technical Manual

For Service Technician Use Only
COMPONENT TESTING (Cont.)
Whirlpool
®
and KitchenAid
®
Filtration and Maytag
®
24" Microltration Dishwashers
n
3-13
Water Sensing with the OWI Sensor




n 
n 
n 
Test Procedure
1. 

2. 
 
4. 
 

and hot water temperatures and their associated resistance

 
 
 
 
 
 
 
 
 
 
 
 
 
NOTE: All thermistor resistance measurements must be made


¾ 

¾ 

¾ 


 

¾ 
¾ 

 
 

 



¾ 

¾ 

11. 
12. 


Strip Circuit - Water Sensing
DANGER
Electrical Shock Hazard
Only authorized technicians should perform
diagnostic voltage measurements.
After performing voltage measurements,
disconnect power before servicing.
Failure to follow these instructions can result in
death or electrical shock.
Electronic
Control
P10-6
P10-5
P10-4
P10-3
P10-2
P10-1
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Measure NTC resistance at P10-1 and
P10-3 connector disconnected from control.
Turbidity Drive
Unused
OPT Sig
VCC
Ref
NTC
OWI Sensor
Temperature: NTC Thermistor
45.9 KΩ - 48.1 KΩ at 77°F (25°C)
11.6 KΩ - 11.8 KΩ at 140°F (60°C)
YL
YL
YL
YL
YL
YL