The heat exchanger has been corroded. Without inhibitor the corrosion will occur naturally in central heating systems and the consequences when boilers fail is both disruptive and costly for propety owners and FMs poses major problems for installers.
Always use the corrosion inhibitor!
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This is the reason why we highly recommend to inspect and top up the system regularly. At the end, you will save thousands.
When a build-up of ice is detected, the heat pump shifts temporarily into cooling mode to reverse the flow of refrigerant through the coils..if the entire unit is iced-up, including the top of the unit and the insides of the coil for an extended period, it can cause serious damage to the equipment. In order to avoid these problems, it is essential to address the issue as quickly as possible.
