Diagnosis
The GE Profile UDT165SSMSS utilizes a condensation drying system supplemented by a heating element. The root cause of plastics remaining wet is a matter of thermal mass and surface tension. Unlike ceramic or glass, which absorb and retain heat from the wash water, plastics are thermal insulators; they cool down almost instantly once the water drains. Because water clings more stubbornly to the non-polar surface of plastic, the droplets do not evaporate or slide off naturally during the drying phase.
To confirm this is a surface tension issue rather than a mechanical failure, check your glassware. If your glasses are dry and spot-free but your Tupperware is drenched, your heating element and vent system are functioning correctly. If everything—including the metal pots—is soaking wet, you likely have a failed heating element or a blown thermal fuse. However, since your other dishes are fine, the issue is specifically the lack of a surfactant to break the water's bond with the plastic surfaces.
How to Fix It
To resolve this, you must optimize the chemical interface and the cycle settings to force water off the plastic surfaces. Follow these exact steps:
- Locate the rinse aid dispenser on the inside of the door. Open the cap and fill it to the "Max" line with a high-concentration surfactant such as Finish Jet-Dry or Cascade Platinum Power Dry. These agents lower the surface tension of the water, causing it to "sheet" off plastics rather than forming droplets.
- Press the Dry Boost button on the control panel. This increases the temperature of the final rinse and extends the drying time, providing the extra thermal energy needed to evaporate moisture from plastic.
- Select the Heavy or Auto cycle. Avoid the "Light" or "Eco" cycles, as these significantly reduce the water temperature and the duration of the heating element's activation, which is fatal for plastic drying.
- Ensure the Sani-Wash option is enabled. This raises the water temperature to a level that ensures plastics are heated as much as possible before the drying cycle begins.
- Rearrange your loading pattern. Place all plastic containers on the top rack, but ensure they are tilted at a 45-degree angle. If a plastic container is perfectly flat, water pools in the recessed rims (the "lip"), and no amount of heat will dry those spots.
If That Didn't Work
- Check the Vent Filter: Inspect the vent area at the top of the door. If grease or detergent film has clogged the vent, the moist air cannot escape the tub, creating a sauna effect that prevents evaporation. Clean the vent area with a soft brush and white vinegar.
- Verify Water Heater Temperature: Your dishwasher relies on the incoming water temperature for the initial heat load. Check your home's water heater settings; it should be set to at least 120°F (49°C). If the incoming water is too cold, the dishwasher spends too much energy heating the water and not enough on the final dry.
- Manual Steam Release: While not an automated fix, crack the door open approximately 2 inches immediately after the cycle ends. This allows the concentrated steam to escape rapidly, preventing it from condensing back into liquid droplets on the cool plastic surfaces.
- Inspect the Heating Element: Visually inspect the circular heating element at the bottom of the tub. If you see any blistering, pitting, or a "burnt" spot on the coil, the element is failing and cannot maintain the ambient temperature required for plastics.
Heads Up
- Never use "All-in-One" pods as a replacement for liquid rinse aid; the rinse aid in pods is released too early in the cycle to effectively assist in the final drying phase.
- Avoid overloading the middle rack; if plastic containers are touching, they create "cold spots" where air cannot circulate, leaving those areas wet.
- Periodically clean your filter (located at the bottom of the tub) to ensure maximum water flow and heat distribution.
- Be cautious with thin plastics; using "Dry Boost" frequently can warp very cheap, thin-walled plastic containers.