Why is my Ariston Water Heater water coming out cold?
- DDavid ColemanAug 15, 2025
There are several reasons why your Ariston Water Heater might be dispensing cold water. It could be due to a low temperature setting; in this case, increase the temperature set for the outlet water. Other potential causes include device functioning errors (check the display for error codes), no electrical connection or damaged wiring (check voltage and cable integrity), absence of HC/HP signal, a malfunctioning timer, insufficient air flow to the evaporator (clean the grilles and ducts), the product being off (check electricity and turn it on), usage of a large amount of hot water when the product is heating up phase, or a probe error (Control the presence, even if occasional E5.).