BoilerFaultCodesAriston 50 ❍, 60 ❍, yellow ❍ Fault Code
Also written as 5060YELLOW — same fault.
The Ariston 50 ❍, 60 ❍, yellow ❍ fault code means: your boiler has detected that the water pressure inside your heating system has dropped too low to operate safely.. It appears on 1 Ariston model in our database.
Technical description: Insufficient water (request filling)
DIY fix possible
Locate the filling loop (usually a silver braided hose under the boiler).Slowly open the valves on the filling loop to allow cold water into the system.Monitor the pressure gauge on the front of the boiler until it reaches 1.5 bar, then securely close the valves.
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Gas Safe Register →Ariston models that show the 50 ❍, 60 ❍, yellow ❍ fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ariston 50 ❍, 60 ❍, yellow ❍ fault code information on this page is sourced and cross-checked against the official Ariston service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026