White spots or an overall white film is left on the glass after the dishwasher wash cycle is completed.
The spots are not readily soluble in water but will dissolve quickly when wiped with an acidic solution such as vinegar.
Spots or films that do dissolve in water are normally due to excess detergent depositing on the glass, overdosing.
This problem is normally not as a result of a fault with your dishwasher
Usually the result of:
- Improper loading of the glasses - item/s masked from the water spray
- Failure to add dishwasher salt to the salt container in the dishwasher
- Salt adjustment control set too low
- Insufficient detergent
- Absence of rinse aid
- Poor loading of the dishwasher
- Too much rinse aid
- Too much detergent
Cause & Prevention
Usually white spots and filming is found to be calcium carbonate deposits caused by hard water. This can be attributed to poor water softening within the dishwasher because of a failure to use the dishwasher salt system correctly or by underdosing the dishwasher detergent.
Underdosing the dishwasher's rinse aid will reduce the sheeting action of the water enabling spots to form.
Conversely, overdosing the dishwasher rinse aid can cause a greasy film to be left.
Overdosing detergent or using dishwasher tablets, especially on a quick wash program, can cause a film of detergent to be left on glassware especially.
Wash the glasses with a cloth soaked in vinegar or citric acid solution and rinse off well with clean water.
I hard water areas ensure that there is dishwasher salt in the salt container.
Check that the salt setting is correct in relation to your water hardness.
Add the correct dosage of detergent.
Ensure that there is rinse aid in the rinse aid dispenser and adjust the dosing lever accordingly.
How You Can Get Help With Dishwasher Problems
To offer support in helping people to determine the cause of dishwasher problems please use the dishwasher support forum.
It’s fast, free, easy and normally someone will pick up on the post that can assist you often with a few experts chipping in if needed. Just register if you don’t have an account, we don’t mail you, send you spam or any of that stuff.
Post up your question and give images if you possibly can and the guys in the forums will do the rest for you and try to identify the problem you have.
Cost you nothing, might save you some embarrassment or worse, a charge for a service visit that wasn’t needed.
Photographs Of Damage
If you can post photographs of the damage or problem you are having this can be really helpful in allowing the dishwasher technicians to see what the problem is.
The guys have the knowledge to assist with most problems but the more information you give them, the better they can help you.