Part 8:
COMPONENT REPAIR AND REPLACEMENT
8.1.3 Troubleshooting the 10-point Terminal Board (Cont.)
Troubleshooting Procedure:
The following procedure is suggested as a method for troubleshooting a trouble condition.
1. Identify the problem condition by observing machine operation.
(Refer to Section 6.4, page 60, and the Troubleshooting Flow Charts in back of manual.)
2. Turn POWER pushbutton off and back on to enter self diagnostics.
3. Check for error codes. (Refer to Section 6.3, page 68.)
4. Open the slide-out control cabinet.
5. Make sure door is fully closed, then place a magnet on the door safety switch.
6. Observe LED’s on the boards. (Refer to Part 7, pages 61-65.)
7. Check for proper voltages on the components or the 10-point terminal board.
8. Check for defective high limits, contactors etc.
9. Check for proper voltage outputs at the circuit board connectors.
(Refer to Section 7.4, pages 71-77.)
10. Replace the defective component and check machine operation.
(Refer to Section 7.5, page 78; Part 8, page 92; and Section 6.2, pages 52-57.)
Components not connected via the 10-point terminal board:
The following components are wired directly from the Timer Control Board in the control cabinet
to the base via the wiring harness:
• Wash pump contactor:
Wire #20
• Fill/Rinse valve
Wire #23
The thermistors also are wired directly from the temperature/display board in the control cabinet
to their respective locations:
• Wash tank thermistor:
Wires #9 and #10
• Booster tank thermistor Wires #11 and #12
• Final rinse thermistor
Wires #7 and #8
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