Moyer Diebel 501HTN, 401HTN, 201LT, 501LT, 201HTN manual Troubleshooting Guide

Page 77

All Models - Timer Board Troubleshooting

Troubleshooting Guide

Troubleshooting Timer Board P/N 0712105

June 2010

8

7 6

1

5

9

4

3

2

Test/Condition

Indication/Cause

Recomendation/Solution

1. Run LED is lit

Board has power

 

 

 

 

Machine is powered up and Run LED

Possible bad start switch, scrub switch

Unplug low voltage plug. If Run LED lights up:

is not lit

or wiring short (does not apply to S.S.

The start switch or scrub switch failed in the closed

 

Pizio switch on model 501 or UH200)

position, or there is a wiring short

 

 

 

Machine is powered up and Run LED

 

Check voltage

is not lit after unplugging the low

 

 

voltage plug

 

 

2. Wash pump runs but nothing else works 4 amp board output fuse is blown

Replace the 4 amp fuse. Check for wiring problem

3.Check continuity of the start switch Check continuity of the scrub switch Check continuity of the cycle light Check continuity of the scrub light Check continuity of door safety switch

 

 

 

15

 

 

 

 

17

EWL

COMMON

 

 

16

CL

8

7

6

5

 

4

3

2

1

 

 

19

 

20

 

18

EWS

 

SS

 

15

 

 

 

 

DSS

 

 

 

 

 

 

 

LOW VOLTAGE SECTION

 

 

 

2 AND 5 VDC

 

 

 

 

Fig. 1

 

Use plug pin #8, wire #15 as common to plug pin # 1, wire #20 (see Fig.1)

Use plug pin #8, wire #15 as common to plug pin # 3, wire #19 (see Fig.1)

Use a meter with diode setting - to cycle light, plug pin # 6, wire #16 and common pin # 8, wire # 15

Use a meter with diode setting - to scrub light, plug pin # 7, wire #17 and common pin # 8, wire # 15

Use a meter with diode setting - to door safety switch, plug pin # 4, wire #18 and common pin # 8, wire # 15

4. Fill LED is lit

Indicates output voltage to fill valve

5.

Select the appropriate setting on the

Note: This solid state timer board is used for

Set dipswitch to FWR for model UH170 and UH200

 

dipswitch for the model of machine

several different models

Set dipswitch to F&D for model 201, 401, 501, UH100

 

the solid state timer will be installed in

 

 

 

 

 

 

6.

Use the skip switch to force the timer

 

Eg: Pressing the skip switch immediately after starting

 

to the next segment of the cycle

 

the cycle will make the machine skip the wash cycle,

 

 

 

and go straight into the drain cycle

 

 

 

 

7.

Use the reset button to reset the solid

The reset button will reboot the solid state timer

 

 

state timer board

board (much like rebooting your computer)

 

 

 

 

 

8.

0.063 amp internal board supply fuse

 

Replace the solid state timer board

 

is blown

 

 

 

 

 

 

9.

Wash motor LED is lit

Indicates output voltage to the wash motor during

 

 

 

wash/rinse cycle only. LED is not lit during soft start

 

 

 

 

 

 

Wash motor LED is not lit, but wash

 

Replace the board

 

motor runs continuously

 

 

67

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Contents Undercounter Dishwashers Page Register Your Product Online Product Registration Card Revision History Revision History Blank This Intentionally Left BlankLimited Warranty Limited WarrantyTable of Contents 201-HT, 401-HT, and 501-HT Models Model DescriptionReceiving InstallationL1 L2 L3 N Electrical ConnectionsFor machines built prior to S/N Electrical Connections Booster Heater/Wash Tank Heater Interlock Circuit Water Connections Drain Connections For Models 501HT, 401HT, and 201HT Filling the BoosterInitial Start-up All Models Check ListModels 501HT, 501HTN, 401HT, 401HTN, 201HT, 201HTN Chemical Dispensing PumpsModels 501LT and 201LT Chlorine bleach solutionModels 501LT, and 201LT Chemical DispensersChemical Dispensing Pump Speed and Tank Fill Adjustments 501HT Control Panel Normal Wash CycleModel Rinse Sentry FeatureDishwasher Drain Operation Daily-End of the Day CleaningDaily-End of the Day After Meal Period or Every 8 Hours Maintenance Schedule Condition Cause Solution This Intentionally Left Blank Service Replacement Parts Service Replacement PartsWash Pump/Motor Assy All Models Part Description Qty All Models Wash Pump/Motor AssyWash Tank, Drain, Scrap Screens All Models HEATER, 120VAC 750W All Models Wash Tank, Drain, Scrap ScreensBuilt-in Electric Booster 201HT, 401HT, 501HT Must be ordered with P/N 0512108 Thermostat Prior to S/N W14478201LT, 501LT Base Electrical Components All Models201HT, 401HT, 501HT Beginning with S/N W14236 and above All Models Base Electrical ComponentsPrior to S/N W14236 All S/NsFill Piping All Models VALVE, Fill 5.0 GPM Breakdown on next All Models Fill PipingFill Valve Assy All Models All Models Fill Valve Assy Fill Chute Assy All Models All Models Fill Chute Assy Sprayarm Assy. All Models Drain Manifold Assy Complete All Models Sprayarm AssyMain Terminal Block, Timer Board All Models Part Description All Models Main Terminal Block, Timer BoardRinse-aid/Sanitizer Chemical Dispensing Pump All Models All Models Rinse-aid/Sanitizer Chemical Dispensing Pump Detergent Chemical Dispensing Pump All Models All Models Detergent Chemical Dispensing Pump Control Panel 201HT/HTN, 201LT, 401HT/HTN, 501LT Wash Rinse201HT/HTN, 201LT, 401HT/HTN, 501LT Control Panel Control Panel with Digital Display 501HT, 501HTN 501HT, 501HTN Control Panel with Digital Display Door Assembly All Models All Models Door Assembly Panel Assembly All Models All Models Panel Assembly Dish Racks Electrical Schematics Electrical SchematicsLow Temp. 201LT, 501LT All S/N’s High Temp.- All S/N’s 201HTN, 401HTN, 501HTN High Temp. 201HT, 401HT Prior to S/N Beginning with S/N 14236 201HT, 401HT High Temp High Temp. 501HT Prior to S/N Single PhaseBeginning with S/N 14236 501HT High Temp Timer Chart All Models Basic Service Basic ServiceDigiital Temperature Display Board 501HT Digital Temperature Display Board0512106 Digital temperature Display coDes Timer Connection Diagram All Models Troubleshooting Guide Timer Board Diagnostic Testing Diagnostic testing for p/n 0712105 solid state timer board

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

Moyer Diebel is renowned for its exceptional line of commercial dishwashing machines, and the Moyer Diebel 501HTN, 501HT, 401HTN, 201LT, and 501LT models are among the industry's finest. These machines are designed to enhance efficiency, usability, and sustainability in the fast-paced environments of restaurants, cafeterias, and catering businesses.

The Moyer Diebel 501HTN model boasts high-temperature sanitization capabilities, making it ideal for establishments requiring rigorous hygiene standards. This unit features a compact design yet offers robust performance, incorporating an advanced wash system that ensures thorough cleaning of dishware, utensils, and glassware. The 501HTN is equipped with a powerful pump and a low-water consumption feature, promoting efficient operation while maintaining excellent cleaning results.

Similar to the 501HTN, the Moyer Diebel 501HT offers high-temperature washing but is optimized for slightly different applications. This model caters to establishments with a varied volume of dishware, providing flexibility and adaptability without compromising cleaning power. Its user-friendly interface simplifies operation while a dashboard display allows for easy monitoring of wash cycles and temperatures.

The Moyer Diebel 401HTN is designed for establishments that require a balance of performance and compact size. Although slightly smaller, the 401HTN does not sacrifice cleaning effectiveness. Its energy-efficient design is complemented by a powerful heating element that enables rapid temperature recovery, ensuring that wash cycles remain efficient even during peak hours.

In contrast, the Moyer Diebel 201LT is a low-temperature machine, making it suitable for users who prefer to operate using chemical sanitization. This model features an intuitive design, providing easy access for loading and unloading dishware. The 201LT’s energy-saving mode reduces water and energy consumption while maintaining an effective sanitizing process.

Lastly, the Moyer Diebel 501LT model continues the trend of efficiency and effectiveness but stands out for its durable construction and ease of maintenance. With its low-temperature technology, it caters to establishments focused on efficiency without the need for high-temperature water, making it a cost-effective option in terms of energy use and water consumption.

All these models are underpinned by Moyer Diebel's commitment to quality and innovation, ensuring long-lasting performance and reliability. With user-friendly designs and advanced technologies, these machines collectively enhance kitchen operations, ultimately contributing to a cleaner, more efficient, and sustainable dining experience.
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