Moyer Diebel Dishwasher Troubleshooting

Moyer Diebel Dishwasher Troubleshooting When it comes to washing dishes, glasses and other wares, commercial kitchens have relied on Moyer Diebel for years. Its line of dishwashing equipment is one of the best in the industry. On a rare occasion you encounter a problem, don’t let it halt any cleaning. Below are Moyer Diebel dishwasher troubleshooting tips to help you in a pinch.

Moyer Diebel Dishwasher Troubleshooting Solutions

The following issues and resolutions are associated with 201 and 301 HT/LT undercounter models.

Not Running

  • Door isn’t closed – If the door is cracked open, this will prevent the machine from running. Make sure it’s closed completely.
  • Power is off – Check the dishwasher power switch to see if it’s on. Also, see if the main power on the circuit breaker panel is on.
  • Broken start switch – If the start switch isn’t working, contact an authorized technician to repair or replace it.

Not Washing Properly

  • Items loaded incorrectly – Reposition the dishes, glasses and other wares correctly or reduce the size of the wash load. Check the operator’s manual for proper loading instructions.
  • Dishes not scrapped properly – Make sure you and your staff are scrapping food off the dishes properly. Too many remnants on the plate can limit the effectiveness of washing.
  • Dirty machine – Clear any clogs in the wash sprays and rinse nozzles to ensure proper pressure and water flow. Also, clean or delime the heating element regularly. Check the operator’s manual for routine cleaning instructions.
  • Hard water – If your facility has hard water, this can hinder washing. Contact a chemical supplier to help soften the water in your building.
  • Low water temperature – See if the water to the unit is coming in at 140 degrees Fahrenheit for best results. Check the “Low Wash or Rinse Temperature” section for more details.
  • Clogged or faulty wash arm – Clean the wash arm so it rotates properly. If the problem persists, contact an authorized technician to adjust, repair or replace the arm’s bearing.
  • Broken thermistor – Have an authorized technician replaced the unit’s thermistor.
  • Dirty or broken detergent injector – Start by cleaning the tubing and pick-up mechanism. If that is not the cause, contact an authorized technician to replace squeeze tube and injector motor.
  • Blown fuse on the chemical circuit board – Contact an authorized technician to test and replace the fuse.
  • Booster or wash tank high limit is tripped – An authorized technician will need to reset or replace either the booster or wash tank high limit.
  • Low or no water – Check the “Low Water or No Water” section above for issues and solutions.
  • Chemicals aren’t feeding correctly – Check the “Chemicals Not Feeding into the Machine” section below for issues and solutions.
  • Insufficient detergent or detergent dispenser – Contact the detergent supplier or an authorized technician for assistance.
  • Detergent pick-up tube is in the wrong container – Make sure the red tube is in the detergent container.

Low Water or No Water

  • Main water supply is off – Turn the water supply valve back on to restore water flow to the machine.
  • Low water pressure – The incoming water pressure might be too low. Set it anywhere from 20-22 PSI. If the pressure is still low, contact an authorized technician or water company to help remedy the issue.
  • Kinked fill hose – See if the fill hose on the machine is kinked. If so, straighten it out to increase water flow.
  • Broken solenoid or fill valve – If the solenoid or fill valve is damaged, have an authorized technician install a repair kit or replace the valve.
  • Clogged solenoid strainer – Check the solenoid strainer for clogs, and clean out any obstructions.
  • Blown fuse on the circuit board – A blown fuse on the machine’s circuit board can affect water flow. Contact an authorized technician to resolve the issue.

Filling with Water Continuously

  • Fill valve isn’t closing – If the fill valve remains open, contact an authorized technician to repair or replace the valve.
  • Doors are cracked open – Make sure the doors are closed.
  • Drain or overflow tube isn’t seated properly – Make sure the drain or overflow tube is placed and seated correctly.
  • No pressure in the air trap – To correct this issue, drain the machine and reinsert the overflow tube. Then, refill the machine. If the issue persists, contact an authorized technician to correct it.

Low Wash or Rinse Temperatures

  • Low incoming water temperature – Check that the warm water temperature in your facility is at 140 degrees Fahrenheit.
  • Faulty thermometer, thermostat or heater element – Have an authorized technician check these components to see if they need to be adjusted, repaired or replaced.

Chemicals Not Feeding into the Machine

  • Low chemical supplies – The machine’s chemical container might be too low. Refill the container.
  • Supply tubing is kinked or damaged – Straighten the supply tube if it’s kinked to help chemicals feed into the machine. If there is damage, contact an authorized technician to replace it.
  • Clogged pick-up tube – Clean out any obstructions in the pick-up tube. If there is damage to the tube, have it replaced by an authorized technician.
  • Blown fuse on the chemical circuit board – Contact an authorized technician to test and replace the fuse.

Stays in Wash Cycle Too Long (201 HT/LT Models)

  • 201HT models – The incoming water supply’s cold Rinse Sentry extends the machine’s wash mode for five minutes, allowing the water booster temperature during the final rinse to reach 180 degree Fahrenheit. If it’s not reaching this temperature, raise the incoming water temperature. If this doesn’t work contact an authorized technician to adjust or replace final-rinse booster thermistor.
  • 201LT models – You’ll notice that the vari-cycle button was pressed and vari-cycle light is on. To correct, press the vari-cycle button to exit. The machine will return to its normal wash mode.

Need more troubleshooting help? Our collection of Moyer Diebel manuals have plenty of diagnostic information to assist you.

Please contact a local authorized service agent who can help with these specific units and all your commercial kitchen equipment needs.

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