Using dishwasher tablets seems simple, but many still encounter issues: undissolved tablets, white residue on dishes, machine odor, and dirty dishes. This article summarizes the 5 most common mistakes and how to fix them definitively.
Mistake 1: Dishwasher tablet not dissolving completely
Symptoms
After washing, you find the tablet still intact or partially dissolved in the dispenser. Dishes are not as clean as usual.
Causes
- The "tablet dispenser lid" does not open due to a faulty spring mechanism.
- Dishes are blocking the dispenser lid, preventing direct water spray onto the tablet.
- Choosing a cold or too fast wash cycle, not providing enough heat/time for the tablet to dissolve.
- The tablet is damp or moldy due to improper storage.
How to fix
- Arrange large dishes (upper rack) to avoid blocking the dispenser lid on the door.
- Check that the dispenser lid spring mechanism is working properly (opens and closes smoothly).
- Select a program of at least ECO 50°C.
- Store tablets in an airtight container in a dry place.
Mistake 2: Dishes have cloudy white streaks after drying
Symptoms
When dishes are first removed, they are clean, but ceramic items become dull, not transparent. Especially noticeable with glassware.
Causes
Hard water – calcium/magnesium ions precipitate to form limescale when water evaporates. This is the most common issue in Vietnam.
How to fix
- Add specialized salt to the water softener reservoir: Largo Salt 2kg 175,000đ.
- Fill the separate reservoir with enough rinse aid: Largo Rinse Aid 1L 189,000đ.
- Adjust the "water hardness" setting in the machine correctly (the default setting is often incorrect for your area).
Mistake 3: Dishes still have food residue after washing
Symptoms
Food particles, grease stains, or sauce marks remain after the wash cycle.
Causes
- Overloading dishes too densely, preventing water from reaching all surfaces.
- Spray arms are clogged with limescale.
- Dishwasher tablet does not have enough enzymes for tough stains.
- Choosing a program that is too short.
How to fix
- Arrange dishes leaning, maintaining space between them.
- Once a week, remove the filter and spray arms to clean off residue.
- Upgrade to a tablet with a strong enzyme formula: Largo All In One 7-in-1.
- Use Intensive 70°C once or twice a week to clean the machine interior.
Mistake 4: Dishwasher has an unpleasant odor
Symptoms
When opening the machine door, there is a musty, moldy, or old food smell.
Causes
- Food residue caught in the filter.
- Door gasket not cleaned for a long time.
- Not opening the machine door after washing to allow steam to escape, leading to stagnant water inside.
- Dishwasher tablet lacks odor-neutralizing function.
How to fix
- Remove and clean the filter weekly.
- Wipe the rubber gasket with a cloth + vinegar.
- After each wash, slightly open the machine door for a few minutes to allow steam to escape.
- Once a month: run an empty Intensive cycle with 1 Largo All In One tablet (which has odor-neutralizing and residue-removing functions).
Mistake 5: Dishwasher tablets clump together
Symptoms
Tablets stick together, feeling damp, hard, and difficult to separate.
Causes
- Stored in a humid place (near the sink, stove).
- Packaging is open, not sealed after opening.
- Purchased close to expiration date or not genuine.
How to fix
- Store in an airtight container with a desiccant pack, in a dry place.
- Do not place in kitchen cabinets under the sink – areas prone to humidity.
- Purchase products with 18-24 months of shelf life remaining, from official channels. Genuine Largo Classic with vacuum-sealed packaging helps preserve them longer.
Quick Lookup Table
| Symptom | Immediate Solution |
|---|---|
| Tablet not dissolving | Load more loosely, choose ECO+ |
| White streaks on glasses | Add salt + rinse aid |
| Dishes still dirty | Load loosely, upgrade to All In One |
| Machine has odor | Clean filter, run Intensive with 1 Largo tablet |
| Tablets clumped | Store dry, buy new stock |
Conclusion
90% of these issues are related to 3 factors: proper dish loading, a complete set of 3 consumables (tablet + salt + rinse aid), and regular machine cleaning. If you have the complete Largo set as in Largo Combo 3 for 555,000đ, most problems will disappear on their own.
If you're new to using a dishwasher and haven't decided yet, try the Trial Kit for 9,000đ first.