Moyer Diebel 201HT, 201HTN, 201LT, 401HT, 401HTN, 501HT, 501HTN, 501LT Diagnostic Testing for p/n 0712105 Solid State Timer Board

68

Timer Board Diagnostic Testing

Press 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

START

SCRUB

POWER

PR

4

Before testing, turn the power switch OFF and allow the machine to complete the

drain cycle.

Check incoming voltages

1

Open 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

2

indicator light

POWER

SCPRIME START

Press and release the START SWITCH

If the green cycle indicator light ﬂashes the start switch works

3indicator light

If one or more components do not run, see below

POWER

SCPRIME START

PRESS START

3 TIMES

5

ﬁll valve •

detergent pump•

rinse-aid pump•

drain valve opens•

drain valve closes•

wash pump•

drain pump or sanitizer pump (if applicable)•

To 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

CONDITION POSSIBLE CAUSE/SOLUTION

One of the components in step 5 does not run Check the component that did not run

The wash pump is the only component that runs Check the 4 amp fuse on the timer board

The wash pump is the only component that will

not run and the 4 amp fuse is good Check pump motor/See troubleshooting guide

None of the components run in step 5 Check neutral wire/See troubleshooting guide

Diagnostic Testing for p/n 0712105 Solid State Timer Board

- effective serial # W081217467 and up

0512979

Contents

Main Installation/Operation Manual with Service Replacement Parts Manual P/N 0512240 rev. K www.moyerdiebellimited.com Dishwasher serial no. Undercounter Dishwashers ATTENTION: REGISTERYOURPRODUCTONLINE IMPORTANT IMPORTANT PRODUCT REGISTRATION CARD http://www.championindustries.com/canada/register REGISTERYOURPRODUCTONLINE Make sure you are connected to the internet then click or enter the address below. RevisionHistory Page Page iv LimitedWarranty LIMITED WARRANTY W arranty of Machines: TableofContents vi Receiving Electrical Connections L1 L2 L3 N Electrical Connections WARNING: 4 Electrical Connections WARNING: Booster Heater Element Field Conversion from Single to Three Phase Operation 5 Booster Heater Element Field Conversion from Single to Three Phase Operation Water Connections Drain Connections Filling the Booster 8 A B C Booster Fill Switch Check List Chemical Dispensing Pumps 11 Chemical Dispensing Pumps Chemical Dispensers 12 Priming the Chemical Dispensing Pumps 13 Note: Chemical Dispensers Chemical Dispensing Pump Speed and Tank Fill Adjustments 14 Normal Wash Cycle NOTE: 15 Scrub Mode (extended wash) - Model 501HT Only Normal W ash Cycle NOTE: Rinse Sentry Feature 16 Dishwasher Drain Operation Note: 17 CAUTION: Daily-End of the Day Pump intake screen Page After Meal Period or Every 8 Hours De-liming Maintenance Schedule 20 Before and During Operation Weekly Maintenance To Clean the Chemical Supply Tubing: Condition Cause Solution Page Service Replacement Parts Service Replacement Parts Illustration Pg. Page Page Wash Tank, Drain, Scrap Screens - All Models 28 Built-in Electric Booster (201HT, 401HT, 501HT) 401 HT Only Page Base Electrical Components - All Models For Wash Tank Heater (All S/Ns) 201LT, 501LT 201HT, 401HT, 501HT Page Page Page Page Page Fill Chute Assy - All Models Page Page Page Page All Models - Main Terminal Block, Timer Board Page Page Detergent Chemical Dispensing Pump - All Models Page WASH RINSE Page Control Panel with Digital Display - (501HT, 501HTN) Page Door Assembly - All Models Page Panel Assembly - All Models Page Page Electrical Schematics Electrical Schematics Illustration Pg. Page Page Page Page High Temp. - 501HT - Prior to S/N 14236 0512092 REV 3 NUMBER/REV DATE 26-FEB-07 Page Page Basic Service Digiital Temperature Display Board - 501HT Service Bulletin Part # 0512106 Digital Temperature Display Board TEST PROCEDURE 66 Timer Connection Diagram - All Models Timer Connection Diagram 67 All Models - Timer Board Troubleshooting Fig. 1 1H1 Troubleshooting Guide Troubleshooting Timer Board P/N 0712105 June 2010 LOW VOLTAGE SECTION HIGH TEMP DIGITAL UNDERCOUNTER 5 Diagnostic Testing for p/n 0712105 Solid State Timer Board - effective serial # W081217467 and up