Hobart dishwasher displays E16; excessive foam or suds detected in wash tank.

Safety first: Disconnect power if foam threatens to overflow the machine.

• Verify detergent type: Ensure you are using a Hobart-approved commercial dishwasher detergent, not hand dish soap or household detergent.
• Adjust dosing: Check the settings on the detergent and rinse aid dosing pumps. Reduce the dosage according to chemical supplier recommendations.
• Flush foam: Drain the tank completely, then refill with fresh water and run a short cycle without detergent to flush residual foam.
• Check water softener: If the machine is connected to a softener, verify that the detergent concentration is adjusted for soft water to prevent over-sudsing.
• Monitor subsequent cycles: If E16 recurs, consult your chemical supplier and Hobart documentation to recalibrate dosing pumps.