Not cooling properly
Parts commonly needed when your Samsung dishwasher has this issue. Recommendations are based on repair patterns and may not diagnose your specific problem.
Verified Components
Parts
1Part numbers confirmed across multiple retailers for DW80M9990US
Parts shown are based on similar models in this series — verify compatibility before ordering
Repair tips for this issue
From the service manual for Samsung DW80M9 Series Dishwashers (2018)
From the service manual
Good to know
2 technician insights for the Samsung DW80M9 Series Dishwashers (2018)
Dry+ default setting exists to address consumer drying complaints
The n5 service mode setting allows technicians to set the Dry+ (or Sanitize) option to ON by default. This is specifically designed to address consumer complaints about drying performance. When set, the dishwasher automatically enables Dry+ on every power-on for courses that support it. Even if the consumer turns it off for one cycle, it re-enables on next power-on.
Heater safety cutoff at 73 degrees during Smart Install testing
During Smart Install STEP 3 heater testing, the heater automatically turns off if temperature exceeds 73 degrees C or if temperature increases by more than 2 degrees over the initial saved temperature (saved 30 seconds after starting). An HC1 error occurs if heater operation is not judged normal after 10 minutes. This protects against heater runaway during testing.
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