经过沟通，出现这一现象的用户竟无一知道进水口有过滤网这一装置。
Through communication, appear this phenomenon of users have no know have a device screen pack inlet.
进水处过滤网堵塞造成水无法正常流过，整理干净就可以。
B. filter clogging caused water to flow through water, clean can.
定期清洁进水过滤网，如出现热水器出水量少，打不着火等现象，则可能有污物堵塞。
Regular cleaning water filter, such as a water heater water is little, cannot catch fire wait for a phenomenon, may have dirt clogging.
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