Water Heater error codes and troubleshooting guides
Browse 709 published fixes across 3 brands and 50 model hubs. Start with a brand or model, then open the exact code guide.
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Ariston VELIS PRO 80 error code 25 means overheating caused by lack of water at boiler inlet. This guide explains the likely causes, the safest first checks, a...
Ariston VELIS PRO 80 error code 20 means broken temperature probes (open or short-circuited) at boiler inlet. This guide explains the likely causes, the safest...
Ariston VELIS PRO 80 error code 20 means broken temperature probes (open or short-circuited) at boiler inlet. This guide explains the likely causes, the safest...
Ariston VELIS PRO 80 error code 61/62 means internal malfunction of the circuit board related to NFC communication or NFC data. This guide explains the likely...
Ariston VELIS PRO 80 error code 22 means general excessive water temperature (circuit board fault) at boiler inlet. This guide explains the likely causes, the...
Ariston VELIS PRO 80 error code 01 means internal malfunction of the circuit board. This guide explains the likely causes, the safest first checks, and when su...
Ariston VELIS PRO 80 error code 01 means internal malfunction of the circuit board. This guide explains the likely causes, the safest first checks, and when su...
Ariston VELIS PRO 80 error code 21 means excessive water temperature detected by single sensor at boiler inlet. This guide explains the likely causes, the safe...
Ariston VELIS PRO 80 error code 10 means broken temperature probes (open or short-circuited) at boiler outlet. This guide explains the likely causes, the safes...
Ariston VELIS PRO 80 error code 11 means excessive water temperature detected by single sensor at boiler outlet. This guide explains the likely causes, the saf...
Ariston VELIS PRO 80 error code 14 means failure to heat water with powered heating element at boiler outlet. This guide explains the likely causes, the safest...
Ariston VELIS PRO 80 error code 24 means failure to heat water with powered heating element at boiler inlet. This guide explains the likely causes, the safest...