Fault Diagnostics
| Fault |
| Steps to determine failure |
| Failure Resolution |
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| Will not fill | 1. | Check if water supply is turned on | 1. | Turn water supply completely on and |
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| or does not |
| and water pressure is between 15- |
| adjust to proper water pressure. |
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| fill with |
| 145 psi |
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| enough | 2. | Check if water inlet screen is | 2. | Clean out water line and screen. |
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| water |
| blocked. |
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| 3. | Check if float switch (e6) has | 3. | Check for leaks and drain water from |
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| activated or water is in dishwasher |
| the base to disengage the float |
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| base. |
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| switch. If water won’t drain from |
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| 4. | Run customer service test program |
| dishwasher tub, see Will Not Drain. |
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| 4. | If voltage is not ≈ 120V, go to step 5. |
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| and measure voltage | between |
| If the voltage is ≈ 120V, replace water |
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| water inlet valve terminals. |
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| inlet valve. |
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| 5. | Check that orange wire connections | 5. | If connectors aren’t properly seated, |
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| to flow meter are seated properly |
| reseat them. If properly seated, |
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| and not damaged. |
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| replace flow meter or harness. |
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| 6. | Check that connections to float | 6. | If connectors aren’t properly seated, |
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| switch (e6) and control are seated |
| reseat them. If connectors are |
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| properly and not damaged. |
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| damaged, replace wire harness. |
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| 7. | Measure float switch (e6) resistance | 7. | If resistance is ≈ 0 Ω, the float switch |
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| between terminals 4 & 1 (by |
| is stuck closed and should be |
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| measuring between gray wire (“L” |
| replaced. If resistance is not ≈ 0 Ω, go |
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| terminal) of drain pump (m3) and |
| to step 8. |
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| terminal 3 of on/off switch (a1)). |
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| 8. | Measure | water | inlet | valve | 8. | If resistance is ≈ 950 Ω, replace |
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| resistance (between violet wires). |
| control. |
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Heater diagnosing
Test programs heat the water to 150ºF at ~ 2ºF / minute. To save time, don't run the entire test – when water circulates and the heater is on, measure the incoming current to the dishwasher. If the current is ~ 11A, the heater is OK. If the current is ~ 1.5 – 2A, the control or heater could be faulty.
At the control or heater, measure the voltage between the large red heater wire and a chassis ground or the dw neutral (WHRD on/off switch or flow switch wire). If the voltage is 120 VAC, the control is OK. If the voltage is 0, the heater relay has failed – replace the control.
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