This sounds like you will need a site visit from a Plumbing & Heating engineer, There are multiple reasons this can be happenings, many different system types and designs that can effect the answer to the question, If you have unequal pressure's ( example tank fed hot water gravity and mains cold water / or you might have an unvented hot water cylinder fitted that has a pressure reducing valve without a balanced cold supply) you can get back feed's from mixing valves like shower mixers etc, best thing to do as a home owner is to turn shower mixer to fully hot or fully cold and try the taps again see if this improves the fault you may save your self some labour time if already found reason for the fault before you call the plumber.常听水回馈, 如果它是一种露雨混合型, 你可以把手接热管 你会感觉冷回推

感恩Joe

***编辑冷回接热管道,你需要管道加热工程师对未经发明热水系统知识问题可能不链接到圆柱体,但检验它将成为故障查找的一部分

似然混合阀门可引起故障

水龙头开水量不够大 开火锅炉时 开水龙头释放水量下次使用时它不保持热量 正因如此你才需要锅炉点火 以便产生更多热水

第一系统曾否正常
第二你说系统锅炉连接到240升存储
这是加压系统或正常开口系统
估计编辑文章会帮助提供细节

热冷水通过平衡阀门注入, 听似最有可能出现问题, 这些空桶系统应该由适配工程师服务(并非所有水管工都具备此条件,