Service Error Codes - Whirlpool M-17 Technical Manual

DIAGNOSTICS AND TROUBLESHOOTING (Cont.)
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.
FUNCTION CODE ERROR CODE
1 - ACU
1 - Control
2 - MCU
2 - User Interface 1 - Stuck Key
1 - Open or
Shorted
3 - Thermistor/
OWI
2 - Failed
Calibration
2-4 Whirlpool and KitchenAid
n
®
For Service Technician Use Only

Service Error Codes

CAUSES
Relay or TRIAC failure on main control
board.
Motor control circuit failure on main
control board.
Control detected stuck keys in user
interface.
NOTES:
˗ If any keys are stuck, the stuck
key(s) will be ignored and an error
recorded to service history, but no
alert to customer.
˗ This fault is monitored on models
with key switches only, not on
capacitive touch key models.
˗ Open or shorted connection or
component in temperature sensing
circuit
˗ Open, shorted or faulty temperature
sensor
˗ Temperature sensor input on
control failed
˗ Incoming water temperature above
167oF (75oC)
˗ OWI failure
˗ OWI lens obstructed by hard water
build up or food soil
Filtration and Maytag
®
Fault codes are intended to give direction as to which
component or subsystem has a failure. Service technician should
troubleshoot the issue and confirm the validity of all fault codes
before replacing parts.
WHAT TO CHECK
Unplug dishwasher or disconnect power and replace
control.
Unplug dishwasher or disconnect power and replace
control.
Check responsiveness of each key. If some keys do
not respond, replace user interface. If all keys are
responsive, fault may be intermittent or caused by
customer use. Check for vent and/or fan fault, which
may lead to excessive moisture build up in door cavity
and cause keys to appear stuck closed.
1. Unplug dishwasher or disconnect power.
2. Check all components and connections in the
temperature sensing circuit with meter.
Fix/replace open/shorted connection or part.
3. Verify incoming water temperature.
1. Check OWI lens surface. Clean if needed.
2. Unplug dishwasher or disconnect power.
3. Check all connections in soil sensing circuit with
meter. Fix/replace bad connection/part.
NOTE: Run diagnostics cycle after installing new
OWI to force calibration on next regular wash cycle.
24" Microfiltration Dishwashers
®