Timer Board Diagnostic Testing

diagnostic testing for p/n 0712105 solid state timer board

-effective serial # W081217467 and up

1before testing, turn the power switch OFF and allow the machine to complete the drain cycle.

check incoming voltages

2Open the door

If the green cycle indicator light blinks, the dOOr sWItch and cyclE lIght work Note: this function times out after 10 seconds

close the door

3Press and release the start sWItch

If the green cycle indicator light flashes the start switch works

indicator light

POWER

PRIME

SC

START

4Press and release the scrub/Ext Wash switch if equipped

If the green indicator light for the scrub switch flashes, the scrub/ext wash switch works

5to test the timer board and the following components, press and release the start switch 3 times with the door closed

If the components listed below are operating properly, they should run consecutively for a few seconds each

fill valve

detergent pump

rinse-aid pump

drain valve opens

drain valve closes

wash pump

drain pump or sanitizer pump (if applicable)

indicator light

POWER

PR

SCRUB

START

POWER

PRIME

SC

START

PrEss start

3 tImEs

If one or more components do not run, see below

cONdItION

One of the components in step 5 does not run the wash pump is the only component that runs

the wash pump is the only component that will not run and the 4 amp fuse is good

None of the components run in step 5

POssIblE causE/sOlutION

check the component that did not run check the 4 amp fuse on the timer board

check pump motor/see troubleshooting guide

check neutral wire/see troubleshooting guide

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Moyer Diebel 401HT, 501HTN manual Diagnostic testing for p/n 0712105 solid state timer board, Timer Board Diagnostic Testing

201HTN, 401HT, 201HT, 501LT, 201LT specifications

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