Hobart AM16 - Error 077: Detergent Empty. Locked

🛑 Critical / Stop Operation
Warning: The information provided here is for educational purposes only. Working with commercial kitchen equipment involves high voltage, gas, and high temperatures. We strongly recommend contacting a certified service technician for any repairs. We are not responsible for any damage or injuries resulting from DIY repair attempts. This information is provided 'as is' without any guarantees of completeness or accuracy.

TLDR

On your HOBART AM16 DISHWASHERS unit, error code 077 indicates that detergent has not been sensed for three consecutive cycles, leading to a complete machine lockout. This usually points to an empty detergent bottle or an issue with the siphoning system. To resolve, ensure the detergent bottle is full, the cap and tube are securely in place, and then prime the detergent pump by pressing ENTER.

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Technical Details

Repair Steps:

  1. Inspect Detergent Bottle and Connections: First, visually confirm that the detergent bottle is not empty. If it is, replace it with a full one. Ensure the detergent bottle cap and the siphoning tube are securely attached to the bottle. A loose connection can introduce air, preventing proper detergent draw.
  2. Prime the Detergent Pump: After ensuring the detergent supply is adequate and connections are secure, press the ENTER button on the dishwasher’s control panel. This action primes the detergent pump, drawing detergent into the system. You may need to repeat this step a few times until detergent is sensed.
  3. Reset the Machine: Once the pump is primed and detergent is flowing, the error should clear. If the machine remains locked out, power cycle the unit by turning it off, waiting 30 seconds, and then turning it back on.
  4. Check Detergent Pump and Sensor (If Error Persists): If the issue continues after priming and power cycling, the detergent pump itself may be faulty, clogged, or the detergent sensor could be malfunctioning. At this stage, it is advisable to contact a certified RestoFixer technician for diagnosis and repair of internal components.

Common Questions:

Q: Why does my HOBART AM16 DISHWASHERS unit display error 077 and lock out?

A: Error 077 indicates that the machine has not detected detergent for three consecutive cycles. This safety feature locks out operation to prevent running without detergent, which would result in ineffective washing.

Q: How do I prime the detergent pump on my AM16 after refilling?

A: After ensuring the new detergent bottle is in place and the tube is secure, press the ENTER button on the control panel. This will activate the detergent pump to draw solution into the line, clearing any airlocks. You may need to press it repeatedly.

Q: What should I do if the detergent bottle is full but the error 077 persists?

A: If the bottle is full, check that the cap and siphoning tube are tightly secured to prevent air from entering the line. Re-prime the pump several times using the ENTER button. If the error still persists, there may be a clog in the line, a faulty detergent pump, or a malfunctioning detergent sensor, requiring professional service.

When to call a technician

For this error, we recommend calling a certified technician. Do not continue operation or attempt repair yourself.

  • Equipment shows a critical or stop-operation fault.
  • You smell gas, burning, or see smoke or sparks.
  • Error returns after following the steps above.
  • You are not trained to work on this equipment.
  • Warranty or safety could be affected by DIY repair.

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