Component Readings/Testing
!WARNING
To avoid risk of electrical shock, personal injury, or death, disconnect power to dishwasher before servicing.
Manual Function Test
A Manual Function Test may be started by pressing the Heated Dry key 5 times followed by the Start key within 8 seconds.
The Normal Wash LED will Flash 3 times indicating manual test mode is active. Specific keypads will turn on or off a component as follows:
KEY | Function | LED |
Hi Temp Wash | Wash Motor | Hi Temp Wash |
Delay | Water Inlet Valve | Delay |
Heated Dry | Heating Element | Heated Dry |
Cycles Select / Normal |
|
|
First Press | Vent | Heavy Wash |
Second Press | Dispenser | Normal Wash |
Third Press | Drain Pump | Light Wash / China Crystal |
The test will cancel 120 seconds after the last keypad is pressed. The display (if available) will show ‘99’ until the remaining timeout period is less than 99 seconds. At this point it will countdown until the modes times out, is cancelled, or another key is pressed. To cancel test, press the Start / Cancel keypad.
Diagnostic Tips
To check control, LED’s and components, enter Field Service Test. If control fails to perform sequence as described, and a fault is detected, determine failure as described in the Field Service Test. If a load component failure has been diagnosed, proceed to the Manual Function Test. To check individual load components for proper operation, enter Manual Function Test. Follow test procedure as described. Repair or replace component as needed.
Note: The High Current or Low Current Motor Error may be detected during a wash cycle selected by a consumer. If this happens, the control will go into a 30 second auto restart mode and shut down if the unit is not able to restart the motor.
Membrane Readings
(All Models)
| Connector | Measure Between | |
Heavy Wash * | J1 | Pin 9 | - Pin 5 |
Normal Wash * | J1 | Pin 9 | - Pin 6 |
Light Wash / China Crystal / Gentle Wash / | J1 | Pin 9 | - Pin 7 |
Quick Wash * | |||
Rinse Only * | J1 | Pin 9 | - Pin 8 |
Auto Clean / Sensor Clean * | J1 | Pin 10 - Pin 5 | |
Heated Dry | J1 | Pin 11 - Pin 5 | |
Sanitize * | J1 | Pin 11 - Pin 6 | |
Hi Temp Wash | J1 | Pin 11 - Pin 8 | |
(Front Only Controls)
Connector | Measure Between | |||
Cycle Select * | J1 | Pin 9 - Pin 5 | ||
Start / Cancel | J1 | Pin 10 - | Pin 6 | |
J1 | Pin 10 - | Pin 7 | ||
Delay | ||||
J1 | Pin 10 - Pin 8 | |||
Tough Scrub Plus / Super Scrub / Power Scrub * | ||||
Tough Scrub / Extra Wash / Hi Temp * | J1 | Pin 11 - Pin 7 | ||
J1 | Pin 12 - Pin 5 | |||
Insta Wash * | ||||
Model ID Jumper * | J1 | Pin 12 - Pin 7 | ||
An unpressed switch will read as an open circuit.
A pressed switch will read as 10k . * On select models
Field Service Test
A Field Service Test may be started by pressing the Heated Dry key 6 times followed by the Start key within 8 seconds. This test must be performed with clean water to insure proper sensor performance.
“88” will appear in the display (if available*) and the following sequence of events will occur:
SECONDS | FUNCTIONS / ACTIVE LOADS |
106 | Vent Wax Motor / Water Valve |
5 | Thermistor check / Turbidity Sensor check & |
| calibration - no loads active. |
120Wash Motor / Vent Wax Motor / Dispenser Wax Motor
180 | Wash Motor / Heater / Vent Wax Motor |
120 | Drain Pump |
4 | Water Valve |
The time for the Thermistor check / Turbidy Sensor check & calibration may vary slightly.
The Field Service Test will not repeat. The Heavy Wash LED will Flash during the test mode. All Indicator lights (except Heavy Wash) will illuminate. If the dishwasher door is opened during the test, the test sequence will pause, and resume when the door is closed. To the cancel test, press the Start / Cancel keypad.
The control has been designed to test the Sensor, Memory, and Motor. During the Field Service Test, if a fault has been detected, the test will abort any time after the motor current has been checked and 2 or more LED's will begin to Flash. A Memory / Software Check will occur immediately after the test is started. The (Delay / Delay 2 hr) LED and one of the following:
Turbidity Sensor - failure - Hi Temp Wash LED
Thermistor - failure - Heavy Wash LED
Motor - high current - Normal Wash LED
Motor - low current - Light Wash LED
Memory Failure - Heated Dry LED
* On select models
Membrane Readings
(Front & Top Controls)
Connector | Measure Between | ||
Insta Wash * | J1 | Pin 10 - Pin 6 | |
Tough Scrub Plus / Super Scrub / Power Scrub * | J1 | Pin 10 - Pin 7 | |
160° Wash * | J1 | Pin 10 - Pin 8 | |
Tough Scrub / Extra Wash / Hi Temp * | J1 | Pin 11 | - Pin 7 |
Model ID Jumper * | J1 | Pin 12 | - Pin 8 |
Start / Cancel | J3 | Pin 9 - Pin 5 | |
Delay | J3 | Pin 9 - Pin 6 | |
(Top Only Controls)
| Connector | Measure Between | ||
Insta Wash * | J1 | Pin 10 - | Pin 6 | |
Tough Scrub Plus / Super Scrub * | J1 | Pin 10 - | Pin 7 | |
160° Option | J1 | Pin 10 - | Pin 8 | |
Tough Scrub / Extra Wash / Hi Temp * | J1 | Pin 11 - Pin 7 | ||
Model ID Jumper * | J1 | Pin 12 - Pin 6 | ||
Start Cancel | J1 | Pin 13 | - | Pin 12 |
Delay | J1 | Pin 13 | - | Pin 14 |
Load Readings
Heater¹ | Measure Between | Result |
ST1 (Heater) - ST11 (Dlb Neutral) | 16 | |
Wash Motor | ST5 (Motor Common) - ST8 (Motor Main) | 3 to 4 |
Drain Motor | ST6 (Drain) - ST4 (Dlb Line) | 25 |
Vent Wax Motor | J6 Pin 1 (Vent) - ST4 (Dlb Line) | 1.2k |
Dispenser Wax Motor | J6 Pin 3 (Disp) - ST4 (Dlb Line) | 2k |
Water Valve² | J6 Pin 4 (Inlt) - ST4 (Dlb Line) | 1.1k |
Thermistor | J5 Pin 1 (Temp) - J5 Pin 4 (Neutral) See Component Info | |
Notes:
1.This value assumes the high limit thermostat is closed.
2.This value assumes the float switch is closed.
July 2005 | 5 | 16026393 |
©2005 Maytag Services |
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