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The circuitry of the machine control boards in the Neptune Washers are protected by a component called triacs. However, if the duration or impact of high current is excessive, this component will fail and be unable to protect the internal resistors in the circuit. The following resistors have been identified to specific components, which may pull high enough current to cause the triacs to fail. Although the current is not very high, the resistor in the circuit can and does fail.
Model Numbers involved: MAH4000 - MLE/MLG2000
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Resistor Involved |
Circuit Involved |
Remedy or Replace Component |
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R-9 |
Pressure Switch
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Check for loose wire connections or high resistance on
switch contacts. Change pressure switch if necessary. |
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R-11 |
Door Lock Wax Motor |
Door Lock Mechanism & Machine Control Board. |
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R-51 |
Hot Water Valve Solenoid |
Water Valve & Machine Control Board |
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R-52 |
Timer Motor
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Machine Control Board or check for loose connections at the
relay terminals. |
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R-143 |
(-) 24 VDC |
A contact was made between Neutral and the 24 volts DC |
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R-162 |
Overall Electrical Buffer. Circuit for Board |
Wire harness and Machine Control Board |
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