Value Village ／ Food & living
This answer is a draft. It stays unpublished until legal review and source verification are complete.
An automatic ice-maker is standard on Japanese fridges, but it draws many queries: "I don't know how to clean it" and "the ice smells." Ice is often assumed to be safe because it is frozen — a misunderstanding found in Q&A forums abroad too.
| Part | How often | What to do |
|---|---|---|
| Water tank | Once a week (change the water daily) | Wash with detergent, wash the filter too. Dry before putting back |
| Water channel and ice tray | Once a month to once every few months (the model's "ice-maker clean" function) | Use the built-in cleaning function or a cleaning agent (citric-acid type is usually specified) |
| Ice bin | Once a month | Wash and dry. Throw away old ice |
| Filter | Replace every 3–4 years (depends on the model) | Replacement interval in the manual |
[Verify] Check cleaning intervals and permitted types of water in the instruction manual for your own fridge.
Freezing does not kill bacteria. Bacteria and mould that grew in the tank or channel come out mixed into the ice. Handle ice as a food, just like water.
Without chlorine, bacteria grow more easily inside the tank, and makers recommend tap water. Minerals can also clog the filter.
Adding water to what is left causes slime. The rule is replace all the water daily and wash the tank weekly.
Many models have an "ice-maker clean" mode that flushes the channel with a specified cleaner such as citric acid. Many models say do not use chlorine bleach (it damages the parts), so check the manual.
That is dissolved air and minerals crystallising, not dirt. A smell or black specks may mean dirt or mould, and is the signal to clean.
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https://www.caa.go.jp/policies/policy/consumer_safety/caution/
https://www.aeha.or.jp/
https://www.mhlw.go.jp/www1/houdou/0903/h0331-1.html
⚠️ Editorial note: the source URLs above were identified by search. Our working environment cannot reach go.jp domains, so the contents have not been checked against the text. Verify every source before publication and record who checked it and when.
What we share here are ideas and everyday practices passed down among people living in Japan, together with general information drawn from public sources. They are not official recommendations, and they are not professional instruction. Practices vary between households and regions.
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